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Glastron

kiethco

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That is some bad ass Intimidator!

Nice CVZ, were you missing the convertible or was it included.

Aaron

I had the convertible top. I usually took it off when we were using the boat.
 

Carlson

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Is that Intimidator owner still online? I would like to talk to him.
 

Carlson

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Give it another shot. Anyone on here got an email from Ratso or BlownCVX20? Thanks!
 
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Where's Tom, He knows everything about Glastron. I think he knows ratso as well.:headscratch:
 

Tom Brown

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I'm here. I've never set up an Intimidator, though. Ratso is your man.

While you wait, I've set up a few other Glastrons and am somewhat familiar with the hulls. What is your question? Perhaps I can point you in the right direction?
 

Letsride22

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I was out on the Sac River with this one last weekend. Super Clean!! Hard to see, but has pearl ghost flames- on the black deck. I don't know what he has for power, but it was running 68-70mph with us on GPS...until we hammered it up to 102mph. LOL.

That's sweet!
 

SKIDMARC

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I was out on the Sac River with this one last weekend. Super Clean!! Hard to see, but has pearl ghost flames- on the black deck. I don't know what he has for power, but it was running 68-70mph with us on GPS...until we hammered it up to 102mph. LOL.

That is sweat!! Never seen these type of hull design...But really nice!:thumbsup
 

Carlson

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Stpectra... That's nothing special, just a CV21. There are quite a few out there. Would love to have one some day though. A fellow Glastron guy converted it into a twin engine LS6 boat with two Berkeleys. Pretty damn nice!

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Tom.. I'll shot you a message. Thanks.
 
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Stpectra... That's nothing special, just a CV21. There are quite a few out there. Would love to have one some day though. A fellow Glastron guy converted it into a twin engine LS6 boat with two Berkeleys. Pretty damn nice!

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Tom.. I'll shot you a message. Thanks.

didn't someone else have a twin jet on the boards?:thumbsup
 

Tom Brown

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That's an amazing looking project, Carlson. :cool:


One thing to keep in mind about these old Carlsons is the whole lot of them are 50~60 mph boats. Perhaps the CVX-20 Sprint was built with the fastest speeds in mind as some of they were hitting mid 80s back in the day. Perhaps because of that, they are extremely exciting to make go fast. It's always exciting to do something you shouldn't be doing.

My Carlson is a CVX-16 and yeah, I've had it up into the triple digits. Frankly, I think the less I talk about it the better because it's not a safe thing to do. It's the rocket powered skate board. Cool? Oh yeah. It's a devil-may-care, safety-shmafety, let's get crazy, type of a thing.

The thing is, of hand full of times I've had it up to extreme speeds, something bad has happened. Nothing terrible, as witnessed by the fact I am typing this message, but something bad, all the same. Things like bow steer induced hard right turns, backing off on the throttle and having the engine pop up like it hit a tree stump because of the extreme gear case drag at those speeds (I originally ran a fishing engine mid section on a 2.5 EFI), and chine walk at frequencies so high I wouldn't have thought them possible. I literally consider myself lucky to be alive.

The old Glastron hulls are built pretty well, compared to anything from the day and even contemporary boats, but they still might delaminate or have some other catastrophic failure at speed. If something like that were to go wrong, it would be a fade to black situation.

When you're going really fast in a Carlson, you will understand God's message that you better stop doing what you're doing or he is going to bring you into his office for a debriefing.

Is this melodrama? I have no doubt it sounds like it, however, I don't feel it is. Please be careful with these old hulls. They aren't triple digit performance hulls, although they are really cool even today. :cool:
 
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Sharp Shooter

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A buddy of mine has a CVX-20 with a small block and a stern drive. It runs 75mph. :thumbsup

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Here's an ad for the CVX-16

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Carlson

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A buddy of mine has a CVX-20 with a small block and a stern drive. It runs 75mph. :thumbsup

Here's an ad for the CVX-16

Tom, first - thanks for that! I'll still send you a PM. As you know most of the guys here are pretty crazy and so am I. ;) I'm not planning on going as fast as you went with your CVX. I remember it from the Carlsonspeed.
Would love to see some more pics of your Glastrons!

That CV21 is pretty nice, I never heard how fast it is though. And I bet the twin rooster looks sweet, only saw really shot sequences of it running in Red Wing.


Can you please post some more pics?
The CVX 20 never had a smallblock or a stern. If he didn't build it himself it is an Intimidator. You can tell the difference at the rear of the boat.

What engine is he running? The stock 260 merc?

Oh and the ad is a CV not a CVX. Here is a catalog pic of the CVX.

Aaron
 

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Sharp Shooter

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Tom, first - thanks for that! I'll still send you a PM. As you know most of the guys here are pretty crazy and so am I. ;) I'm not planning on going as fast as you went with your CVX. I remember it from the Carlsonspeed.
Would love to see some more pics of your Glastrons!

That CV21 is pretty nice, I never heard how fast it is though. And I bet the twin rooster looks sweet, only saw really shot sequences of it running in Red Wing.


Can you please post some more pics?
The CVX 20 never had a smallblock or a stern. If he didn't build it himself it is an Intimidator. You can tell the difference at the rear of the boat.

What engine is he running? The stock 260 merc?

Oh and the ad is a CV not a CVX. Here is a catalog pic of the CVX.

Aaron

He told me it was a CVX-20...? It has a solid lifter small block chevy in it and the exhaust exists out the back of the engine cover like the boat in this thread. It has a stern drive, but I don't know if it's original. I rode in it from Topoc to Needles marina and it handled beautifully!
 

Tom Brown

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He told me it was a CVX-20...? It has a solid lifter small block chevy in it and the exhaust exists out the back of the engine cover like the boat in this thread. It has a stern drive, but I don't know if it's original. I rode in it from Topoc to Needles marina and it handled beautifully!

It's not even close to stock, although it's very nice, and I'm not just talking about the rub-rail. He's also fitted Intimidator-style exhaust tips to what I would guess isn't an Intimidator. It doesn't look like they are flared like the chrome Intimidator tips. Then their is the scoop...

The CVX-20 is a great handling hull. Also, it's worth pointing out, the larger hulls don't necessarily go slower. A CVX-20 Sprint will go faster than a CVX-18 which will go faster than a CVX-16, all with the same power. The 20 Sprint is a light layup, though.
 

Guest

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This one ran the Jacksonville Poker Run a few years ago...beautiful boat...

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Sharp Shooter

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Do you have more pics?

I drove over to his house and snapped some.

1981 CVX-20 "Intimidator". It currently has a 400hp small block crate motor and runs 80. He's done a lot to it. :thumbsup

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Tom Brown

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Fantastic! I love the billet slats.

Was that always an Intimidator or did he turn a CVX-20 into one? I suspect the latter.
 
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I built the boat back in the mid 90's, I found it at Catherines Landing at Lake Mojave sitting in the mud in outside storage for $800 through a friend of mine. The lower unit was blown out and the exhaust manifolds were cracked. Got it home and fixed what was needed to get it running a used it for a couple of years. then tore it completely apart to rebuild it. There was literally nothing on that boat that didn't get touched in the rebuild as well as many changes to it to get it to the point where it runs a stable 80 mph. It has been a great reliable family boat and still gets alot of looks. In my opinion you would be hard pressed to get anymore mph out of one of these unless you made a drive change to handle more HP, hydraulic steering and trim tabs. But the main key to more mph and better handling is the bottom, there crap without alot of work to them.
 

Tom Brown

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No it is an 81 CVX 20 Intimidator, I am the owner of the boat

Sensational boat. The reason I ask is the exhaust tips are not original and it's obvious the boat was done by someone with the glass skills to turn a CVX-20 into an Intimidator. Cool, though.

I like the way you brought it into modernity. :cool:

Welcome to RiverDave's place, Wood Decks Rule. :)
 

Carlson

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I drove over to his house and snapped some.

1981 CVX-20 "Intimidator". It currently has a 400hp small block crate motor and runs 80. He's done a lot to it. :thumbsup

Thanks! That really is a great lookin Intimidator. I love how the scoop was fitted in between the exhausts!

The interior is a pretty nice as well.

I'd have repainted it metalflake though but that's only my opinion.


I built the boat back in the mid 90's, I found it at Catherines Landing at Lake Mojave sitting in the mud in outside storage for $800 through a friend of mine. The lower unit was blown out and the exhaust manifolds were cracked. Got it home and fixed what was needed to get it running a used it for a couple of years. then tore it completely apart to rebuild it. There was literally nothing on that boat that didn't get touched in the rebuild as well as many changes to it to get it to the point where it runs a stable 80 mph. It has been a great reliable family boat and still gets alot of looks. In my opinion you would be hard pressed to get anymore mph out of one of these unless you made a drive change to handle more HP, hydraulic steering and trim tabs. But the main key to more mph and better handling is the bottom, there crap without alot of work to them.

Nice boat you got there! Tell me, do you have some before pics as well?

Did you redoe stringers and everything? How did you manage that? Build them more stable to handle that much horse?

Trim tabs was something I would go for, once saw a Donzi 22 Classic with huge trim tabs, owner said it was putting out nearly 750hp... That's why :)
 
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Sensational boat. The reason I ask is the exhaust tips are not original and it's obvious the boat was done by someone with the glass skills to turn a CVX-20 into an Intimidator. Cool, though.

I like the way you brought it into modernity. :cool:

Welcome to RiverDave's place, Wood Decks Rule. :)

As i said it is an intimidater not a CVX-20, I have the original bolt on exhaust tips to prove it, I modified the original openings to the raised areas on the transom where the original tips bolted as you can see, which is an Intimidator only feature I believe to run larger stainless exhausts through the openings. Oh yea the Intimidator decal on the bow was faintly there when I got too!
 

Tom Brown

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As i said it is an intimidater not a CVX-20, I have the original bolt on exhaust tips to prove it....

Hey, I didn't mean to question your integrity, or something. Your boat is fantastic. I love what you did with it. Gorgeous Intimidator. :thumbsup
 
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Thanks! That really is a great lookin Intimidator. I love how the scoop was fitted in between the exhausts!

The interior is a pretty nice as well.

I'd have repainted it metalflake though but that's only my opinion.




Nice boat you got there! Tell me, do you have some before pics as well?

Did you redoe stringers and everything? How did you manage that? Build them more stable to handle that much horse?

Trim tabs was something I would go for, once saw a Donzi 22 Classic with huge trim tabs, owner said it was putting out nearly 750hp... That's why :)

Thanks!

The stringers and floor were in great shape when I got it and felt nothing else was needed the stringers and floor are all tied in together plus I left the rear bulk head behind the rear seat in place for strength as well, It's almost on the verge of needing trim tabs, as it is now at full throttle trimed up she hangs out there pretty good, but any more power and a prop change would make them necessary.

I thought about painting it back original (beige and brown metal flake) but with all the changes done I thought it would look better as a modern day version of a CVX, most people freak when they find out it's an 1981 boat.
 
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Hey, I didn't mean to question your integrity, or something. Your boat is fantastic. I love what you did with it. Gorgeous Intimidator. :thumbsup

Hey no worries! Thanks for the thumbs up!

I just wanted to make it clear that it was an original Intmidator and not a CVX as there is quite a few differences. I did do alot of glass work to it and still itch to this day from it. As my first boat project it was alot of work but worth it. The boat is starting to show it's age now as I tend to run it pretty hard but but it takes the abuse and keeps on going, all in all it's still a great family boat.
 

Carlson

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Thanks!

I thought about painting it back original (beige and brown metal flake) but with all the changes done I thought it would look better as a modern day version of a CVX, most people freak when they find out it's an 1981 boat.

Oh man it even was brown beige? Sweet, one of my favorite color schemes for the Intimidator.

Yeah if you don't know I bet it's hard to tell! Great job..

Still would love to see some before pics if you got any.
 

twocents

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The Carlson Intimidator was a fun project. I worked at the Carlson plant on Grove Street in Anaheim from 1979-1981 and was part of the development team. We quickly learned that the Jet and Outboard bottom on the CVX 20 wasn't quite right for a stern drive application (5.7 MerCruiser/260HP w/Alpha Drive). Our prototype boat probably went to the water (Golden Avenue in Long Beach back then) nearly a dozen times. We brought along several buckets of "mud" (quick set bondo) and lots of sanding blocks. We'd run the boat, bring it back to the trailer, add or subtract some material on or off the bottom to see if we could pick-up a mile or two and make it handle better. After about a month of testing we had a really good running hull (69-70 mph on radar with 2 people in the boat). Glastron corporate in Austin was a little nervous about selling a 70mph stock boat to the general public so we had to make a couple more bottom revisions to slow it down a tad (top speed of the production version was 65 mph). The CVX 20 was an amazing boat -- at that same time we came out with the "Ski Machine" (CVX 20/outboard) that was a super tournament style boat, especially for serious slalom skiing. And of course, there were a few (2 or 3) custom/handmade CVX 20s that had a "pad" bottom and raced at the Lake Havasu Outboard Classic and the Parker Enduro -- but that's another story.
 

Tom Brown

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The Carlson Intimidator was a fun project. I worked at the Carlson plant on Grove Street in Anaheim from 1979-1981 and was part of the development team. We quickly learned that the Jet and Outboard bottom on the CVX 20 wasn't quite right for a stern drive application (5.7 MerCruiser/260HP w/Alpha Drive). Our prototype boat probably went to the water (Golden Avenue in Long Beach back then) nearly a dozen times. We brought along several buckets of "mud" (quick set bondo) and lots of sanding blocks. We'd run the boat, bring it back to the trailer, add or subtract some material on or off the bottom to see if we could pick-up a mile or two and make it handle better. After about a month of testing we had a really good running hull (69-70 mph on radar with 2 people in the boat). Glastron corporate in Austin was a little nervous about selling a 70mph stock boat to the general public so we had to make a couple more bottom revisions to slow it down a tad (top speed of the production version was 65 mph). The CVX 20 was an amazing boat -- at that same time we came out with the "Ski Machine" (CVX 20/outboard) that was a super tournament style boat, especially for serious slalom skiing. And of course, there were a few (2 or 3) custom/handmade CVX 20s that had a "pad" bottom and raced at the Lake Havasu Outboard Classic and the Parker Enduro -- but that's another story.

Amazing information! Thank you, twocents! :) :) :)


I'm not gay but I would totally have sex with you. :thumbsup
 
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The Carlson Intimidator was a fun project. I worked at the Carlson plant on Grove Street in Anaheim from 1979-1981 and was part of the development team. We quickly learned that the Jet and Outboard bottom on the CVX 20 wasn't quite right for a stern drive application (5.7 MerCruiser/260HP w/Alpha Drive). Our prototype boat probably went to the water (Golden Avenue in Long Beach back then) nearly a dozen times. We brought along several buckets of "mud" (quick set bondo) and lots of sanding blocks. We'd run the boat, bring it back to the trailer, add or subtract some material on or off the bottom to see if we could pick-up a mile or two and make it handle better. After about a month of testing we had a really good running hull (69-70 mph on radar with 2 people in the boat). Glastron corporate in Austin was a little nervous about selling a 70mph stock boat to the general public so we had to make a couple more bottom revisions to slow it down a tad (top speed of the production version was 65 mph). The CVX 20 was an amazing boat -- at that same time we came out with the "Ski Machine" (CVX 20/outboard) that was a super tournament style boat, especially for serious slalom skiing. And of course, there were a few (2 or 3) custom/handmade CVX 20s that had a "pad" bottom and raced at the Lake Havasu Outboard Classic and the Parker Enduro -- but that's another story.

Hey twocents,

Very cool info, Just curious on what you guy's did to the bottom of the boat to get it to run 70 with the stock Merc 260 package before you made the changes to slow it down? When I flipped mine upside down to work on the bottom it had a hell of a hook in it, it was anywhere from 1/4" to 3/8" and in some places almost a 1/2". I fixed the hook, straigtend the lifting strakes and knife edged them, also knife edged the transom and chines and then textured the back half of the bottom to break up water adhesion. it was a hell of alot of work but it made a difference. Just curious if I was close to what you guy's did originally.
 
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Oh man it even was brown beige? Sweet, one of my favorite color schemes for the Intimidator.

Yeah if you don't know I bet it's hard to tell! Great job..

Still would love to see some before pics if you got any.

Thanks Carlson,

I do have a few build pictures but there photo's, no digital cameras back when I did the boat! and not sure if they would scan well enough to post plus im to dumb to figure it all out to get them posted as well. If you have questions let me know, I just let the cat out of the bag on what I did to the bottom of it!
 

twocents

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The minor bottom changes to the Intimidator included adding a little hook to the bottom (the last 3 to 4 feet -- about 1/4") and just slightly reducing the depth of the two lifting strakes closest to the keel so the boat didn't ride quite as high out of the water at top speed. Basically, just wanted to increase wetted hull surface and create more drag. If you really wanted to pick-up speed on a CVX 20, modifying the vee-keel into a true running pad was the trick. Alan Miller, an employee at the Carlson plant in Anaheim did the first one. After that we built several (super lightweight) center steer, pad bottom (no mold) CVX 20s for Mod VP racing. Evinrude supported the effort with some well built/modified 235 HP V-6 engines. Well known Unlimited hydroplane racers Bill Muncey and Chip Hanauer were part of our driving team. When everything was right, these special "race" CVX 20s with a 235 Evinrude were good for about 90-91 mph.
 

Oumpe

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I?m new here but this seems to be the right place for questions.
Got myself a cvx-16.
Stringers and transom are rotten, took the floor out with my bare hands, took more work to remove the carpet than it took to tear out the floor.
Mine is a UK Roger Clark boat without hull ID and no capacity plates or anything like that.

The small pad have a hook in it from sitting on a crappy roller trailer.
The transom are cracked, probably from the 2.5efi 260 sitting on a stand in the previous owners garage, must have been suicidal to run that engine on a cvx-16 with rotten transom.

So I need to put in new transom, stringers, and floor.
There are some cracks in the hull that I will fix.

Was the pad horizontal coming out of the mold? Mine are not, it?s lower on one side.

My plan is to put a e-tec 150 ho on the transom with a 5"setback hydraulic jackplate.
Hydraulic steering and foot throttle.

Should I make tha pad flat and horizontal?
Should I move the gas tank to the rear as far back as it goes?
Should I extend the lower streaks all the way back?
The hook that is in the pad will be removed, the streaks are not what they used to be so they will be fixed aswell.

There seems to be a hook between the chines and middle streaks on booth sides, is that deliberately to make the boat faster up on plane? should I get that area straight aswell or leave it as it is.

My intentions with this boat is not extreme speeds, but under 70 would be a bit dissapointing with over 150hp on a small boat like the cvx.
I plan to keep all the interior and do a lot of waterskiing behind it.

All input are welcome.
 

Tom Brown

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Welcome to RiverDave's Place, Oumpe. I'm glad you joined us.

That's a lot of very specific questions about your boat. You wrote that all input is welcome and I have a CVX-16 so I'll take a shot at answering a few of them.

When the floor and stringers are that rotten, the hull will loose some of it's shape. The hull itself is quite plastic. In the same way, you can straighten it. I built a torsion box out of MDF, set the hull on it, and then put large amounts of weight on the stringer when I glassed it back in. The weight was in the form of a couple of anvils and some sandbags. That straightened things out pretty good. I only had to fill about 1/8" of hook to get the pad straight.

My pad was not horizontal coming out of the mold but it was close enough. It doesn't have to be that accurate. Mine was built in Austin.

I'd be more worried about the hook in the pad than making it horizontal. For best speed, knife edge the back but understand it will be very difficult to make paint stick to a knife edge.

I wouldn't move the tank, particularly if you care about rough water handling.

I modified the pad and inner strakes quite a bit. What I learned is that I should not have modified it. There are benefits but not significantly so. If you extend the inner strakes to the back, the extensions will be extremely difficult to get to stay on. Just look at the cracking behind the inner strakes you have now. All CVX-16 hulls are cracked there. There is a lot of flex in that region, particularly in your case with a really heavy engine and then another heavy lump of jack plate.

Oh yes... 150hp e-tec. Nice engine. Good power. Pretty heavy for a CVX-16 but not the worst I've seen. I'd nix the hydraulic plate, though. Keep it light. Consider a manual RapidJack. I think the manual 6" R-J is only about 35 pounds and it's a stout piece. My handling improved noticeably when I ditched a heavy CMC plate in favor of the RapidJack 6" manual.

Hydraulic steering is great. A foot throttle is a requirement.

70mph is extreme speed for a CVX-16. You'll have a hard time getting there with a 150hp e-tec ho. 60mph is easy with that power. 65mph is possible. 70mph is a stretch, to be honest. It's possible but not with a heavy boat and you don't seem at all concerned with weight.

Keep it light. Don't modify the hull. Straighten the pad, sharpen the inner strakes and trailing edges a touch, and leave it at that. Nothing else matters at speed. Even the pad and inner strakes barely matter at these speeds. It's a lot of work for little gain. It's worth it if you're rebuilding a hull but just barely.

For all those hours you are going to put into that hull with glass work, there are more gains to be had by simply removing the windshield.

The CVX-16 is a great little hull. I still enjoy mine but I enjoyed it less when it wasn't as hard core as it is now. Once you start modifying the pad, jacking the engine to the moon, and doing all the stuff that is required to go fast, you will probably discover it's not as fun. It will be more exciting, though.

They make a great ski boat. Make sure you glass in some hard points to mount a boarding ladder at back, when you rebuild it.

Oh... and loose the floatation foam. It will just make you sink faster, at this point. Once it water logs, that stuff is like rock. Forget it. You don't need it.
 
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strippoker

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Makes me regret selling my CV23 I could run right at 55-60 most any day in it.

Had a call on a used one just going to waste in a yard a few weeks back the guy only wanted 500 for it I should have got it lord knows some Canadian may have wanted it.
 

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I drove over to his house and snapped some.

1981 CVX-20 "Intimidator". It currently has a 400hp small block crate motor and runs 80. He's done a lot to it. :thumbsup

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I too am restoring an Intimidator. Working it down to the bare hull for a full Porsche-style restoration: hate it or love it. The boat needs everything so why not: Porsche paint (Guard's red), 911-styled interior from the '80's, and a 944 Turbo powerplant with a modern 58mm Ballbearing turbocharger. Loads of fun. I want my engine lid to open as his does: backwards. This way you can access the compartment while in the boat. From the factory, it was hinged at the rear seat.

I love those race-style latches at the front and those stainless hinges in the rear: anyone have any clues??

Mark
 

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The minor bottom changes to the Intimidator included adding a little hook to the bottom (the last 3 to 4 feet -- about 1/4") and just slightly reducing the depth of the two lifting strakes closest to the keel so the boat didn't ride quite as high out of the water at top speed. Basically, just wanted to increase wetted hull surface and create more drag. If you really wanted to pick-up speed on a CVX 20, modifying the vee-keel into a true running pad was the trick. Alan Miller, an employee at the Carlson plant in Anaheim did the first one. After that we built several (super lightweight) center steer, pad bottom (no mold) CVX 20s for Mod VP racing. Evinrude supported the effort with some well built/modified 235 HP V-6 engines. Well known Unlimited hydroplane racers Bill Muncey and Chip Hanauer were part of our driving team. When everything was right, these special "race" CVX 20s with a 235 Evinrude were good for about 90-91 mph.

Hi there, wow what a neat site and rare coincidence as I'm restoring an '80 Intimidator to how Porsche would have done it in the mid-80's (love it or hate it, Porsche's are my passion).

I'm about to separate & flip my hull to "true" it and address some of the hook. Would you mind detailing the lifting strake modifications you're referring to? I'm still absorbing all this boat lingo. :) It sounds like the two closest to the center: they need to be increased in depth: not sure how I'd accomplish this. I don't want a true pad as the water I'll be in is not particularly smooth with all the wake board boats on it these days.

Thanks in advance! :)

Mark
 

Carlson

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We might not be as fast as you guys across the big pond but here is a short video from our last Glastron meeting in Rotterdam. Weather wasn't too good and water was pretty rough so most of the vids were really shaky, did my best to put together this video that might be a little different compared to others:
 
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STEPPCHILD

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...Nice rare boat right there... MR...those latches and that type hinge is pretty common..should be easy to find from most of th major marine suppliers..:thumbsup

...btw..I have 4 pair of the hinges..if you can't find them, I will give them up for...1million dollars...:cool
 
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