1985 3.2 Carrera turbo build

[Dieter9]

Originally Posted by KRLocke

would 2 small fans help with IC/intake temps

Exactly what i was thinking .. not sure .
Was thinking of 2 fans on the engine lid grill or ..

[KRLocke]

Great minds think alike. It would certainly be worth try. If you have a BBQ probe remote temp system, you would look at real time temps with and without.

[Black_Hat]

don't mess with electric fans. Your mechanical engine fan will move WAY more air - try ducting.
also
try methanol injection- the methanol/water mix will lower your intake temps after your inter cooler (I have several kits from Devils own methanol injection) inject after the intercooler.
methanol/water mix will also increase the octane of your Gasoline.
one more trick is to add an extra nozzle to spray methanol/water on the outside of your intercooler

one final trick- IF - you have a really modified engine and you are using really big nozzles - you need to add some oil to your methanol/water mix so it does not wash down your cylinder's
I use Kolts racing castor oil ' BeNOL' it is refined and de-gummed. (you can do this for regular installations just for the smell)

I have had several boosted motors on this and when I tear them down - NO gum build up , no nothing the inside looks clean....and no smoke you just add a little.

And the biggest befit - when on the boost it smells like Castor oil and I get thumbs up from the sport bike guys or anyone who I pass or is following me.

[greglepore]

Yeah, methanol injection would be great.
I used an intercooler about 2x that size at .7 and feel safe, but I have a 3.8 tail.
I agree that the electric fans would be of little benefit unless they were radiator sized, and those would be a rough fit.

[ItzaMe]

Why does it seem like it's very simple to boost these engines..?

I should not be considering it but it's hard not to!!

[mikedsilva]

Originally Posted by Dieter9

Exactly what i was thinking .. not sure .
Was thinking of 2 fans on the engine lid grill or ..

Dieter, this video is interesting.. not a porsche but they fitted a top mount. At first they tried a fan but said it made little difference. In the below vid they dyno run and now have a shroud that guides the flow of air through the bonnet and through the cooler. And worked much better than the fan.

Discussing effects on air temp after fitting shroud
https://youtu.be/M8QTHdoNHDw?si=NyUZUJqud6TBF5xM&t=350


full video here.. you can see the rubber shroud they made...
https://youtu.be/M8QTHdoNHDw?si=gk-g33U3JJXmL1SQ

[Cliffej257@gmai]

Can you talk more about the ecu? What exactly did you do there? Also did you not add a fuel pressure regulator?

Also have you considered a maf conversion?

Thanks

[Dieter9]

Originally Posted by ItzaMe

Why does it seem like it's very simple to boost these engines..?

I should not be considering it but it's hard not to!!

Do it ! It drives so much better !!

[Dieter9]

Originally Posted by Cliffej257@gmai

Can you talk more about the ecu? What exactly did you do there? Also did you not add a fuel pressure regulator?

Also have you considered a maf conversion?

Thanks

Well, its a fully tunable ecu called VEMS .. its pretty much plug and play!
Talk to raceboy if you wanna know more ..
Vems regulates fuel.. no need for a regulator.
If you keep stock ecu then you def need one .

This is the kit i used :

https://www.pnpecu.com/vems-porsche-911-32-carrera-32-231-hp-64-p.asp

I got the stealth one .. it looks like a stock ecu because it uses a normal bosch shell .

[Dieter9]

Originally Posted by mikedsilva

Dieter, this video is interesting.. not a porsche but they fitted a top mount. At first they tried a fan but said it made little difference. In the below vid they dyno run and now have a shroud that guides the flow of air through the bonnet and through the cooler. And worked much better than the fan.

Discussing effects on air temp after fitting shroud
https://youtu.be/M8QTHdoNHDw?si=NyUZUJqud6TBF5xM&t=350


full video here.. you can see the rubber shroud they made...
https://youtu.be/M8QTHdoNHDw?si=gk-g33U3JJXmL1SQ

Thx Mike will look into it !!

[Cliffej257@gmai]

Awesome. Thanks this is exactly what I'm looking for. Where do the additional sensors go? Temp and map?

[Dieter9]

Originally Posted by Cliffej257@gmai

Awesome. Thanks this is exactly what I'm looking for. Where do the additional sensors go? Temp and map?

Contact @raceboy he's your man !
Aka Peep ..

[Raceboy]

MAP is built into ECU, you only need to run vacuum line from intake (tee it from FPR vacuum line) to ECU.
Intake temp sensor comes with the kit and uses short adapter cable that allows to plug it to AFM engine side plug (AFM is not needed).
Kit also includes WBO2 sensor wnd wiring and proper throttle position sensor with special adapter cable (that converts 3pin female JPT plug from TPS to one male JPT 2pin and male 3pin JPT plug) so that cutting of factory engine harness is not needed and everything is easily reversed to stock if needed.

[Cliffej257@gmai]

Hey again,

Can you explain a little more on the oil feed and drain setup. I see the turbokraft feed line, but you mentioned a 930 to block adapter, I'm not familiar. And on the drain side, do you see a need for an accumulator? And finally where did you terminate the oil drain tube at? Thanks for your time. Trying to wrap my head around everything I need.

[Coultl]

This is an amazing build. Nice work! How’s it running?

That seems like a very big turbo for the boost you are running. I’d guess boost will come on later but it will run very efficiently up top.

[Raceboy]

Boost level has nothing to do with turbo size, turbo is chosen according to engine displacement, compression ratio, rpm range etc.
Air cooled 911 engine cannot be paired with small turbo, it creates huge backpressure and anemic powerband (=like diesel engine), not to mention most important thing, knock treshold will be very soon btd.

Originally Posted by Coultl

This is an amazing build. Nice work! How’s it running?

That seems like a very big turbo for the boost you are running. I’d guess boost will come on later but it will run very efficiently up top.

[Dieter9]

Originally Posted by Cliffej257@gmai

Hey again,

Can you explain a little more on the oil feed and drain setup. I see the turbokraft feed line, but you mentioned a 930 to block adapter, I'm not familiar. And on the drain side, do you see a need for an accumulator? And finally where did you terminate the oil drain tube at? Thanks for your time. Trying to wrap my head around everything I need.

Im sorry for the late respons, the 930 block adapter is piece 93010770505 from porsche .
It reduces the dimension for the oil feed line on the block . If you use the oil feed kit from turbokraft you need this, on the 3.2 that is, dont know for other engines .
The oil drain gravity feeds to my oil drain plug in the sump.. no need for accumulator .. oil pump sucks it back into the engine .
Please ask if you have questions ..

[Dieter9]

Originally Posted by Coultl

This is an amazing build. Nice work! How’s it running?

That seems like a very big turbo for the boost you are running. I’d guess boost will come on later but it will run very efficiently up top.

Well, exactly as @raceboy said .. you choose a turbo accordingly to the displacement of the engine .
The boost comes quick at about 3k rpm ..

[scarceller]

Interesting project, what's the compression ratio? and what cam?
Keep us updated how this works out and what max boost level you finally decide on.

[Dieter9]

Originally Posted by scarceller

Interesting project, what's the compression ratio? and what cam?
Keep us updated how this works out and what max boost level you finally decide on.

Hi there !

Thank you, i have not messed with compression or cams .. all original us model 3.2 engine spec .

Boost about 7-8 psi .
Drives like a dream and turbo noise is adictive