Breaking BIG!

[Enen]

This past Memorial Day weekend was an eventful weekend in our boat! Spent the weekend in Parker with the RDP wrecking crew! We had one of the best days boating. Went up to the Dam with Headingtohills, The crew on the Kelegian's boat, and Ricky, and his crew on a 30ft Eliminator which included Nord and Pink Taco. On the way home we had a fun ride running hard ( for a holiday weekend) with Ricky in his Eliminator.

We got back to the keys and after a bit this crew, prompted by Bolo, was asking for a " hot lap"



Hindsight is 20/20 even with one eye. I now think of 100 different ways I could have politely declined. Instead Bildo, Dennis, Bolo and I jump in to take a quick run down the strip. Shoulda known better.

With the boat loaded up, we rolled over and I laid into the sticks. The water was pretty rough that weekend, and the passengers were getting bounced around a bit. We pulled out of the throttles, and brought everyone to the back of the boat. After a little shuffling of the crew, we took off again. Rolled over, set the trim, pushed the sticks forward and gave it everything those Pfaff Engines had.




They say that breaking a drive is a rite of passage for a performance boat owner. If so, I just fell into a Baptism by fire. The motors were 4500 rpm and climbing and the boost gauges were pegged. The wind was picking up, the stereo was going, the crew was shouting with excitement and the port tachometer shoots past the 7000 indication, and hovers somewhere around what I am guessing is 8k or maybe a bit north of that for the few seconds it takes me to realize what's happening. I shut down the port motor, and bring the boat back to idle with a " Shit Bildo, I think we broke a drive".

We re-start the port motor, and it fires up, only now there is a constant stream of smoke coming off the left bank of cylinders, and it isn't exactly idling smooth. Time to get the boat out of the water and over to OD1 for some drive help.

Short story long, Paul fixes up the drive, but the engine is hurt. At that point, I didn't know just how hurt it really was. I rolled into Havasu to grab the boat, and off to Boostpower........

 

[530RL]

Being a baller aint cheep

 

[Enen]

Alexi gets to looking at things. Pulling spark plugs, and putting a really cool camera deal into the cylinders to inspect each one. #1 Cylinder looks good, #2 good #3 good, 4,5,6 looks good, there is a glimmer of hope, #7 good, almost home free, #8.... not so much.:grumble:




Number 8 broke a valve, and the broken valve destroyed the head, the block, the piston, and came back up the intake to put a hole in the intercooler.

 

[Enen]

Found the broken exhaust valve!

 

[Riverbound]

One of my best weekends boating on the strip hands down.

The carnage though.....ouch.

 

[Enen]

Being a baller aint cheep

I'm just glad its not a repair bill for a helicopter.

 

[pronstar]

Damn that sux.
Sometimes the best of times have a large indirect cost associated with them.

 

[Enen]

Engine is out and being torn down.





This pic makes me think of life with one testicle.

 

[Cole Trickle]

Sucks but you learned a valuable lesson....

Never trust or listen to bildo..

 

[Enen]

Sucks but you learned a valuable lesson....

Never trust or listen to bildo..

Lol. I thought I learned that after the enduro. Guess I'm a glutton for punishment.

 

[TX Foilhead]

:yikes hope someone on the crew, hopefully not RB, felt bad enough about the situation to try and take your miming of of it for a few minutes.:boobeyes::boobeyes:

 

[underpressure]

Been there, done that, and don't want to do it again!

 

[TBulger]

Geez, that's too bad Aaron, that takes a real man to face that bill and keep smiling.

 

[Enen]

Geez, that's too bad Aaron, that takes a real man to face that bill and keep smiling.

I gotta tell you Tom, I've learned a lot about myself through this ordeal....I'm really not bright enough to do anything else but laugh and smile.

 

[Enen]

:yikes hope someone on the crew, hopefully not RB, felt bad enough about the situation to try and take your miming of of it for a few minutes.:boobeyes::boobeyes:

Weekend was expensive enough, without risking HALF...

 

[530RL]

Weekend was expensive enough, without risking HALF...

I've met your wife, she is totally worth keeping.

 

[Enen]

I've met your wife, she is totally worth keeping.

She has been having fun busting my balls about breaking the boat doing a hot lap.

 

[530RL]

She has been having fun busting my balls about breaking the boat doing a hot lap.

Sometimes you just have to go to your happy place and not argue

 

[welldigger00]

Holy shit, this is horrible news! I feel your pain! I spent the better part of a year building a blower motor in my garage, only to blow it up in the boat in my driveway on the first attempt to get it running. Since that point my whole outlook on life changed, I used to be they guy that though I could do anything. I realized that is not the case! I don't know of any engine builders that can run a drilling business, so now I let the professionals like Alexi do what they do best! He built my engine, and I love it!

 

[Riverbound]

Sucks but you learned a valuable lesson....

Never trust or listen to bildo..

Hey now.

 

[RogerThat99]

Lol. I thought I learned that after the enduro. Guess I'm a glutton for punishment.

Yes, I was there to see that live. LOL.

Sorry to hear about your engine Aaron. That Sux.

 

[Don Johnson]

That sucks, sorry. Like losing a drive is not bad enough you have to get kicked in the sack and grenade a motor at the same time! That was one pissed off valve, cannot believe it made its way up stream and took out the intercooler core while it was at it. Sucks!

Why didn't the rev limiter kick in? The Mapping of the system should have included a Rev limiter setting that should have kept that motor protected. I would hit up Pfaff and ask why they did not Map a rev control point in.

 

[welldigger00]

025 and myself got to go for a ride it this boat during the Schiada Notta Regatta, and all I can say is it was like being in a 50 MPH dance club going to Fox's that night! So cool...

 

[Enen]

Why didn't the rev limiter kick in? The Mapping of the system should have included a Rev limiter setting that should have kept that motor protected. I would hit up Pfaff and ask why they did not Map a rev control point in.

The motor "outran" the computer. The motor had as close to 100% load on it as possible. When the drive broke the load the motor was under lifted and the RPM's shot to the moon faster than the computer could catch it and limit it. I guess this falls under the category of shit happens.

The latest from BP is the motor is basically junk. I'll post up more pics of the carnage as they come. We are looking at all out options up to and including a complete re-power,

 

[plaster dave]

Been there done this. Really sucks man.

 

[River Lynchmob]

Well look on the bright side...you'll finally be able to detail your bilge and get the motors all polished up...and I second...never listen to Billdo or Dennis shit or Bolo for that matter...you need better wing men ay of those girls could have done a better job for you

 

[DILLIGAF]

Damn....sorry to see that. Been there done that and it does suck but what can you do. You have the right attitude about it all.

Here was my crew when I blew my drive/motor out. Could have been a lot worse


[/img] View attachment 357751

 

[Don Johnson]

The motor "outran" the computer. The motor had as close to 100% load on it as possible. When the drive broke the load the motor was under lifted and the RPM's shot to the moon faster than the computer could catch it and limit it. I guess this falls under the category of shit happens.


You may want to check in with BP and ask how they plan to control the rev limiter. I asked a few questions about this scenario of total driveline loss under WOT as it got me thinking.....I understand from a good source that allowing the MSD to handle the rev limiting is much better then the MEFI computer. I also understand that if the MSD had been handling the limiter your motor could potentially have been preserved. Just something to think about for the future. I understand that is how my Teague motors are set up, MSD handling limiter responsibility.

 

[Enen]

The motor "outran" the computer. The motor had as close to 100% load on it as possible. When the drive broke the load the motor was under lifted and the RPM's shot to the moon faster than the computer could catch it and limit it. I guess this falls under the category of shit happens.


You may want to check in with BP and ask how they plan to control the rev limiter. I asked a few questions about this scenario of total driveline loss under WOT as it got me thinking.....I understand from a good source that allowing the MSD to handle the rev limiting is much better then the MEFI computer. I also understand that if the MSD had been handling the limiter your motor could potentially have been preserved. Just something to think about for the future. I understand that is how my Teague motors are set up, MSD handling limiter responsibility.

Both the computer and MSD were set up to limit the RPM. Maybe something was faulty, I dunno, but it that is how it was set.

 

[Don Johnson]

Both the computer and MSD were set up to limit the RPM. Maybe something was faulty, I dunno, but it that is how it was set.

Gotcha. I was told that the MSD should be able to control RPM limits even under WOT and complete drive line failure. In fact was told that this very scenario happened on a big HP Whipple engine, prop shaft broke at WOT over 135 MPH and no problem, RPM was controlled to engine.... I would check it out, sounds like your setup should have prevented the engine from grenading.

 

[Enen]

Gotcha. I was told that the MSD should be able to control RPM limits even under WOT and complete drive line failure. In fact was told that this very scenario happened on a big HP Whipple engine, prop shaft broke at WOT over 135 MPH and no problem, RPM was controlled to engine.... I would check it out, sounds like your setup should have prevented the engine from grenading.

Thinking we are going to upgrade MEFI and MSD in favor of some more modern EFI technology.

 

[Enen]

Monday morning carnage.

 

[28Eliminator]

Im gonna go out on a limb Aaron and guess that a piston kissed a valve... sucks

 

[Chopperman]

Holy hell, carnage is right!!

 

[rivrrts429]

Valve spring not strong/fast enough at 8k rpm's?

That really sucks. Those parts will usually cough across the entire intake when that happens. Unless you're lucky to send it all through the exhaust lol

 

[Nacimientobound]

Bummer, but the price of having toys. Still worth it.

 

[Enen]

Valve spring not strong/fast enough at 8k rpm's?

That really sucks. Those parts will usually cough across the entire intake when that happens. Unless you're lucky to send it all through the exhaust lol

It did both. The engines have just over 200 hours on them. Thinking the valve spring was a bit worn. Part of the exhaust valve was in the exhaust, part of it blew a hole in the intercooler.

Here is a pic of the block. You can see cylinder wall is destroyed.




Here is a damaged rod.

 

[Cole Trickle]

jesus that sucks......

How many songs did you guys listen to before you discovered the valve was eating the motor at 8K rpms...lol:yikes

 

[mbrown2]

jesus that sucks......

How many songs did you guys listen to before you discovered the valve was eating the motor at 8K rpms...lol:yikes

Ouch that hurts....


That carnage sux...you guys looked to be having a great weekend. Engine failures are like an athlete going down during the season with ACL or Achilles injury....you are top of the world one week and on the sidelines/shore the next.

 

[jayboat]

Sorry to hear this, Aaron. The price of fun, but it appears you have the right attitude about it.
Really not much else to do but keep smiling, stroke the check and move on. :thumbsup

 

[Cole Trickle]

BTW...I wasnt making light of a shitty situation. That sucks in a huge way and I have been there with a car or two

 

[Tommy Gun Images]

Monday morning carnage.

View attachment 359092 View attachment 359093

Have you tried new piston?

 

[Enen]

Have you tried new piston?

Not yet, but I will be trying 16 new ones soon.

 

[Tommy Gun Images]

Not yet, but I will be trying 16 new ones soon.

That should fix it...

 

[River Lynchmob]

Holy shit...that's a holy piston. No wonder you needed a river trip last weekend.

 

[spotondl]

Twin power is awesome until...

Damn Aaron, sorry to see that. Hope it's smooth sailing from here on out though. I thought my piston was bad...

 

[Enen]

BTW...I wasnt making light of a shitty situation. That sucks in a huge way and I have been there with a car or two

Lol. Make light of it all you want. I am!

Alexi ran the good engine through his dyno that attaches to the drive.

Good engine made 823 at the prop. Hoping he sends me a video or posts it up here himself.

We were laughing today, after disassembling the engine, he still hasn't found the broken intake valve.

 

[Riverbound]

At least the fix on Plan B was much cheaper.

View attachment 359325

 

[RiverDave]

Sucks but you learned a valuable lesson....

Never trust or listen to bildo..

This!!

Gotcha. I was told that the MSD should be able to control RPM limits even under WOT and complete drive line failure. In fact was told that this very scenario happened on a big HP Whipple engine, prop shaft broke at WOT over 135 MPH and no problem, RPM was controlled to engine.... I would check it out, sounds like your setup should have prevented the engine from grenading.

They give you all this mumbo jumbo how it's checking shit 100 times a second.. yet somehow The motor outruns the computer.. LOL I agree with you, something went wonky with that program.

Monday morning carnage.

View attachment 359092 View attachment 359093

Hit up RaceTec on the boards, he will give you a set of Billet pistons at a better price then anyone else.

RD

 

[Outdrive1]

This!!

They give you all this mumbo jumbo how it's checking shit 100 times a second.. yet somehow The motor outruns the computer.. LOL I agree with you, something went wonky with that program.



Hit up RaceTec on the boards, he will give you a set of Billet pistons at a better price then anyone else.

RD

These motors are open loop. Closed loop like a car has an O2 sensor and can make adjustments on the fly. Open loop is pre programmed and makes no adjustments while the motor is running. O2 sensors don't like water. So standard set in a boat is open loop. The motors may have a knock sensor to retard timing. By the time you hear a knock at high rpm it's probably too late. Those pistons look like they've seen a ton of detonation. Timing, bad injector, bad fuel, low octane fuel, low fuel pressure, or a bad program from the get go.