Turbo sizing for Twin Turbo 514ci BBF

[Oliver1421]

I just finished building a 514ci BBF 8.3:1 CR. I have an old PFM setup and have everything except the turbos. I was looking to run modern turbos with wastegates. I called turbonetics and they said the don't make turbos the size I need for a draw through system (carbon seals), which I thought was weird considering I've seen multiple Race Aero draw through systems with turbonetics turbos mated to gentry water cooled turbine housings. I'm sure I could get something lined up with Brummett Marine but I don't have the $6200 they quoted me for two complete turbos. Any info would be greatly appreciated, my frustration level is through the roof and I'm almost to the point of regretting this Twin turbo dream. I've tried contacting some of the bigger turbo marine builders with no response to emails or even getting them to answer the phone.
Thanks in advance!
Gary

 

[AzGeo]

do yourself a favor and 'drill that intake for 8 injectors' .

EVERY draw thru system I ever worked on using a 429/460 type Ford motor, had serious 'rich/lean' problems from cylinder to cylinder with all types of different intake manifolds . (factory and factory copies were the best performing, because they were hi-velocity and not high flowing intakes)

We (and many others) had to actually install a piece of 'screen mesh' into the area under the carb base .

We were trying to create 'turbulence' where there was none . Intercooled was worse .

These are all problems with 'draw thru systems' that I have encountered on the 429/460 Ford .

Everyone makes good turbos for your motor, going 'draw thru' or not . I have found that Turbonetics has make quite a number of changes since Bob Keller is no longer in charge .

I have found that Turbonetics is not the same 'helping' kind of company it once was under Bob Keller .

You can find a number of turbo products that will fill your needs, both draw thru and not, all over the net .

Seek other sources, no matter what system you decide to build .......

The 'short runners' liked the tune up, the long runners went lean (fuel slowed, then fell to the floor), then on decel, the motor stalled due to an over rich condition . If you richen it up, the short runners were FAT and the long ones ran good .

Even if you just invest in a 'basic Megasquirt ECM', and externally control the 'timing advance' in the distributor, you won't have the 'uneven tuneup problem' Fords seem to suffer as 'draw thru' systems .

On a big Ford I would put the fuel into the motor at the intake valve, not up stream .........

Turbos that will do what you want, are all over the net, you just need to seek them out .

Back when I did business with Bob Keller, Turbonetics was a real resource for all turbo related information, it seems that since he is gone, so is that sentiment .

Talk to Dave at Innovative Turbo ...........

 

[Oliver1421]

do yourself a favor and 'drill that intake for 8 injectors' .

EVERY draw thru system I ever worked on using a 429/460 type Ford motor, had serious 'rich/lean' problems from cylinder to cylinder with all types of different intake manifolds . (factory and factory copies were the best performing, because they were hi-velocity and not high flowing intakes)

We (and many others) had to actually install a piece of 'screen mesh' into the area under the carb base .

We were trying to create 'turbulence' where there was none . Intercooled was worse .

These are all problems with 'draw thru systems' that I have encountered on the 429/460 Ford .

Everyone makes good turbos for your motor, going 'draw thru' or not . I have found that Turbonetics has make quite a number of changes since Bob Keller is no longer in charge .

I have found that Turbonetics is not the same 'helping' kind of company it once was under Bob Keller .

You can find a number of turbo products that will fill your needs, both draw thru and not, all over the net .

Seek other sources, no matter what system you decide to build .......

The 'short runners' liked the tune up, the long runners went lean (fuel slowed, then fell to the floor), then on decel, the motor stalled due to an over rich condition . If you richen it up, the short runners were FAT and the long ones ran good .

Even if you just invest in a 'basic Megasquirt ECM', and externally control the 'timing advance' in the distributor, you won't have the 'uneven tuneup problem' Fords seem to suffer as 'draw thru' systems .

On a big Ford I would put the fuel into the motor at the intake valve, not up stream .........

I appreciate your input, but I am really trying to stick with a carburetor for multiple different reasons. There's gotta be people that have had success with running a draw through carb'D TT BBF. I've talked to John from C&J Engineering and he seems to think he can build me a proper carb that will run properly.

 

[AzGeo]

be sure to let us know how it all turns out .

Maybe ask Scott Foxwell about Ford 429/460 intakes and heads, before you put all your eggs in one basket .

I want you to go fast on the first day , and for many years to come .

Is C&J talking about a 'blow thru' carb, or an 'indexed draw thru carb' ?

 

[Oliver1421]

Ive been told that sizing a turbo for a boat vs.a car is a totally different animal, however I'm not sure because I don't have a ton of knowledge with this stuff. I tried turbonetics thinking they might have a little more knowledge in this department as I have seen multiple setups with their turbos. I honestly don't even know where to start with sizing. I also was trying to find contact info for Innovative turbo and only found an article saying that they went out of business.

 

[Oliver1421]

be sure to let us know how it all turns out .

Maybe ask Scott Foxwell about Ford 429/460 intakes and heads, before you put all your eggs in one basket .

I want you to go fast on the first day , and for many years to come .

Is C&J talking about a 'blow thru' carb, or an 'indexed draw thru carb' ?

John from C&J is a family friend so he knows my setup and has been helping me along the way with the build and can specs he wanted. I'm not opposed to any ideas really but I definitely wanted to pick some brains before I jumped into anything. The motor is going in my Hallett Mini Day Cruiser and have no desire to race it or anything, just want some extra juice when my foot gets heavy. Aiming for around the 8-10 lbs of boost range. One thing I do know for sure is this motor will get dyno tuned before it goes in the boat.

 

[AzGeo]

Ford set ups .

Maybe your carb guy can make the intake manifolds 'work better', for draw thru systems at 'around plus one half of an atmosphere' .

I was not able to, and when EFI came in and with the injectors placed at each intake valve, my Ford turbo problems were resolved .

Good luck to you .......

 

[Oliver1421]

What EFI setups did u use and what was the cost for the system, definitely an option I need to look at if that's what it's gonna take to make it run right. The last thing I want is to spend all this money on something that runs like crap or blows up. I work too hard for my money to flush it down the toilet. I really appreciate your input and advice. As I said before, I'm new to all of this stuff and it sounds to me like you have been down this road before. I'm all ears, that's why I started this thread.

 

[BoostPower]

I just finished building a 514ci BBF 8.3:1 CR. I have an old PFM setup and have everything except the turbos. I was looking to run modern turbos with wastegates. I called turbonetics and they said the don't make turbos the size I need for a draw through system (carbon seals), which I thought was weird considering I've seen multiple Race Aero draw through systems with turbonetics turbos mated to gentry water cooled turbine housings. I'm sure I could get something lined up with Brummett Marine but I don't have the $6200 they quoted me for two complete turbos. Any info would be greatly appreciated, my frustration level is through the roof and I'm almost to the point of regretting this Twin turbo dream. I've tried contacting some of the bigger turbo marine builders with no response to emails or even getting them to answer the phone.
Thanks in advance!
Gary

Well, we have new and used turbos for that size engines from e10 rajay to Turbonetics 60mm up to 88's. Give us a call 877-BPOWER-4-u or 805-498-8888.

 

[BoostPower]

Well, we have new and used turbos for that size engines from e10 rajay to Turbonetics 60mm up to 88's. Give us a call 877-BPOWER-4-u or 805-498-8888.

ALEXI's desk direct 805-530-6077

 

[jmeads]

ALEXI's desk direct 805-530-6077

Call Alexi and he will get you all set up.

 

[BoostPower]

Call Alexi and he will get you all set up.

Thanks John, hope alls well[emoji1303]

 

[Oliver1421]

ALEXI's desk direct 805-530-6077

Thanks I'll be calling today

 

[BoostPower]

Thanks I'll be calling today

Cool. Use that direct number. We have a bunch of good new and used twin turbo items. Thanks

 

[Oliver1421]

Cool. Use that direct number. We have a bunch of good new and used twin turbo items. Thanks

Perfect thank you so much!

 

[BoostPower]

Perfect thank you so much!

Nice chatting [emoji469][emoji1303]

 

[Oliver1421]

Nice chatting [emoji469][emoji1303]

Thanks again for all the knowledge, I finally found someone that answered all my questions I had! What a relief!

 

[BoostPower]

Thanks again for all the knowledge, I finally found someone that answered all my questions I had! What a relief!

No worries. Love to help[emoji1303]