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Discussion Starter #1
I have the design that will fit in my car and some parts I don't have to buy but I wanted some input from someone who may have more insight to real world design.I looked at some boat engines with draw thru and feel this is what I could make work at mostly dragrace car.The turbo's are GT4088[4/800 hp each]and the carbs are 1250 cfm dominators I run on the car now.Let me know what you think please.The engine is a wedge Mopar 446 with edelbrock Victor heads.
 

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Discussion Starter #2
My goals with it are 1k to 1200 hp and I use a Blowershop intercooler and I can provide much more info.Thx!
 

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I have the design that will fit in my car and some parts I don't have to buy but I wanted some input from someone who may have more insight to real world design.I looked at some boat engines with draw thru and feel this is what I could make work at mostly dragrace car.The turbo's are GT4088[4/800 hp each]and the carbs are 1250 cfm dominators I run on the car now.Let me know what you think please.The engine is a wedge Mopar 446 with edelbrock Victor heads.
Pretty much...this:

 

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Discussion Starter #4 (Edited)
Yes very much like that!I am worriede about the hose couplings leaking and leaning it out.In my pic I can also raise the floor of the carb adaptor to keep whatever puddles away.
From what I can see your carbs are braced underneath by something.I would mount to the front of my engine if I ca to the carbs.
 

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Discussion Starter #5
Here is the engine with iron heads.


I need to design an intake for above the I/C also and I wondered if the tubes should point to the intercooler more or parralel is ok?how tall can it be over tube size,angle to the cooler.Thanks for any help!
 

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Puddling happens from a lack of vacuum. It is inherent in a draw through system. The carbs sit on a carb box, the carb box is attached to the turbos with silicon hoses. I wouldn't worry about those connections, just make sure they are as short and tight as possible with good clamps. Having a brace isn't a terrible idea for the carb box, but not used in most banks/pfm setups. The intercooler adapter? I will let the big boys have fun with that one :)
 

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Discussion Starter #7 (Edited)
Thanks for the reply!I am very interested in hearing about the intake and what they may say good or bad.I dew this as an axample to bolt on the intercooler.
 

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I looked at some boat engines with draw thru and feel this is what I could make work at mostly dragrace car.]
A draw through system is way old school and has many negatives.
Running your fuel air mixture through the intercooler is one of the biggest negatives.
If you're starting from scratch a draw through setup is not the way to go.

Since you are just starting into a turbo program have you read up on it ?
Get the book, "Maximum Boost" or something similar and it will get you headed in the right direction.
 

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mo balls than $cents$
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The turbos have to be drawthru capable as well ;)
 

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Discussion Starter #10
I know that the draw thru is not ideal but I think I can be happy enough with it for what I do.I have ran my car on a roots for 14yrs so I know a little about an engine on boost and I have some tech help when needed on the turbo side of things.
 

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Discussion Starter #11 (Edited)
the turbos have to be drawthru capable as well ;)
lol ^^^^^ I had a question on the turbo seal and oil psi n vacuum if a restrictor is needed in the pressure side,what seal will hold up for a while and under vacuum?Thx.
I gained a lot of interest on the draw thru when my brother put togather a old Kawasaki 1260cc draw thru and made 300hp
 

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Discussion Starter #12
A draw through system is way old school and has many negatives.
Running your fuel air mixture through the intercooler is one of the biggest negatives.
If you're starting from scratch a draw through setup is not the way to go.

Since you are just starting into a turbo program have you read up on it ?
Get the book, "Maximum Boost" or something similar and it will get you headed in the right direction.
I have been using my intercooler for 10 yrs with carbs/roots so I have a working knoledge of my carbs under draw thru with the intercooler.I do have the Corky Bell book supercharged and I have read it several times and I go back to it all the time.
 

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mo balls than $cents$
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Drawthru turbos are specially built to deal with the conditions, if you have basic garrett 4088's youre gna need to blowthru or get new turbos. the compressor side of a drawthru turb has additional sealing compared to what you have.
 

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Discussion Starter #14
Thanks!I need to know what to ask for when I buy a turbo so this info would be help full beforehand.
 

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I did a single 1250 draw thru tt sbc in my Hondo, ran good, needed nitrous for the hit. Had some lag. Prob 1000 hp, 25 lbs. Banks intercooler
 

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Discussion Starter #18
I did a single 1250 draw thru tt sbc in my Hondo, ran good, needed nitrous for the hit. Had some lag. Prob 1000 hp, 25 lbs. Banks intercooler
What size turbo was that?I am looking for carbon seals in a bigger turbo and I need some help finding who can do it.Thanks for any help.
 
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