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The OASIS Guy
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im new to the turbo world. i need some great advise. im going to be using my 331 dart block for the foundation. i think that i would like to run a 76-88 mm turbo. this is a track only car. i have no clue what a/r is and how it affects turbos, intercooler choice air/air or air/water,

im looking for a complete kit or something close to it. i want quality parts.

ive went to the turbo forums site but i really hated their layouts... also i cant even post in the dang for sale section because i have less than 50 post (how gay....)

anyways id like some ideas from some guys that have been there and can explain some of this stuff to me.

ive built several n/a and nitrous cars but never a turbo. so im not clueless on how they work its just the lingo and what apps work best for engine size.

thanks

brian
 

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What's your intended power levels ?

Picking A/R is a bit of given and taken from top end vs. low end spool up.
No perfect answer there.

intercooler choice again falls into intended power levels.
air/water cools more, but is 100 times more complicated to install and
is truely for track only cars.

recommend this book for understanding turbo system fundamentals
it will walk you thru the math of turbo selection and exahuast pipe sizing
and how to read and use compressor maps and intercooler flow.
Full of very good basic turbo system engineering information.
http://www.amazon.com/Maximum-Boost-Turbocharger-Engineering-Performance/dp/0837601606
 

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I agree turbomustangs is a bit difficult to navigate, kinda wish there was more trafic in this area of the corral.

Guess us turbo guys gota stick together.
 

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The OASIS Guy
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Discussion Starter #5
What's your intended power levels ?

Picking A/R is a bit of given and taken from top end vs. low end spool up.
No perfect answer there.

intercooler choice again falls into intended power levels.
air/water cools more, but is 100 times more complicated to install and
is truely for track only cars.

recommend this book for understanding turbo system fundamentals
it will walk you thru the math of turbo selection and exahuast pipe sizing
and how to read and use compressor maps and intercooler flow.
Full of very good basic turbo system engineering information.
http://www.amazon.com/Maximum-Boost-Turbocharger-Engineering-Performance/dp/0837601606


looking to make 800-1000 rwhp

probably want a ball bearing turbo for a faster spool. i alreadt have 3" exhaust for my long tubes which is probably usless when i get the turbo... ill probably need 3 1/2 im assuming.

ill check out those links thanks guys.
 

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The OASIS Guy
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Discussion Starter #7
i was thinking going 88 myself.

what is a small frame turbo and a mid turbo...?

ive seen these phrases used before.
 

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only thing I can think is someone talking about T3 T4 and T6 housing.

to go with an 88mm tubro you will probably have to step up to
a T6 housing turbo .......... and those suckers are BIG
 

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If you want the right turbo, don't get your info from a forum. Get it from an established dealer or engine builder.
or get that book I posted up and learn how to do the math for yourself
and learn how to read, use and understand compressor maps ;)
 

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So if I read that book, I will know everything about sizing turbines and compressors?
You will have the basic knowledge to work out how to plot
your engines air needs on any given compressor map.

Turbo companies publish compressor map for a reason.
It's what you use to pick a turbo for a given engine at a given PR (press. ratio)

So, yes.

and like I said earlier, picking A/R's is a bit of an art.
You can ask 20 "experts" what AR to get and get 20 different answers
with none of them really wrong.

That book also walks thru the math of sizing exhaust and cold side piping
understanding intercooler flow and the math for sizing it also.
Very good technical book on designing a turbo system for any engine.
 

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ask 20 experts and youll get about 3 answers LOL- b/c there will only be 3 close to what you need ---and to really know what works best you will have to try all 3.

i made 900 rwhp with twin 62-1's and 3" exhaust-- i went to a gt47-88mm turbo this year-- should make much more power. should be done by next month. i am running a 5" down pipe and then splitting it into dual 3.5' and ten to dual 3" for now. when i get on the dyno i will remove the 3" and see if it makes any more power.

there is alot more to it than just having a turbo that will support 800-1000rwhp. expect to spend about $20,000 in the other supporting modifications required to actually get the power to the ground reliably. thats not just a number i pulled out of my ass either LOL


some pics of my car and build are located here:
http://www.theturboforums.com/smf/index.php?topic=104390.0
 

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ask 20 experts and youll get about 3 answers LOL- b/c there will only be 3 close to what you need ---and to really know what works best you will have to try all 3.

i made 900 rwhp with twin 62-1's and 3" exhaust-- i went to a gt47-88mm turbo this year-- should make much more power. should be done by next month. i am running a 5" down pipe and then splitting it into dual 3.5' and ten to dual 3" for now. when i get on the dyno i will remove the 3" and see if it makes any more power.

there is alot more to it than just having a turbo that will support 800-1000rwhp. expect to spend about $20,000 in the other supporting modifications required to actually get the power to the ground reliably. thats not just a number i pulled out of my ass either LOL


some pics of my car and build are located here:
http://www.theturboforums.com/smf/index.php?topic=104390.0
LOL, ok I was exaggerating on the 20 people, but you pointed out the key point.

Yep, the extra $20k is a killer.
Must say I love my $30,000 1989 Mustang though. :salute:
 

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LOL, ok I was exaggerating on the 20 people, but you pointed out the key point.

Yep, the extra $20k is a killer.
Must say I love my $30,000 1989 Mustang though. :salute:
its great isnt it? LOL! god forbid we ever wreck our cars-- geico is going to give me about $500 for my 90 mustang LOL!
 

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its great isnt it? LOL! god forbid we ever wreck our cars-- geico is going to give me about $500 for my 90 mustang LOL!
You better have an appraisal and a stated-value policy on that beautiful car of yours:eeek:
 
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