Engine set up for a twin turbo converted 1985 911 Carrera?

[MrShades]

My 1985 911 3,2 Carrera is converted to a 3,3 l twin turbo and i wonder if they used the right engine set up for this?
The cams is: 147-148(is this 964 cams?)
Stroke: 74,4 mm is 3298 ccm
Bore: 97 mm
Compression: 8,2:1
Boost pressure: 0,6 bar
Turbos: 2 Garret turbos

How does this sound to the experts here?

[911TT33]

Sounds like they have used aftermarket higher compression pistons in the 97mm cylinders. Nothing wrong with that at all. Same stroke between the 3.2 and 930 motors.

Boost is quite conservative for such a setup. I suspect you could run more boost with this setup... Around 0.8 bar easily.

How does it drive?

Some pics would be nice!

[MrShades]

The car drives nice and is quite fast up to 255 km/h. I goes faster but i dont know how much.
The only thing i am not pleased with is that i run a 915 transmission so i cant use firsth and second gear properly because i am afraid to brake the transmission which i have done once already

Here is a picture of the car
Running 225/45/17 front tires and 255/40/17 rear tires on 7,5x17 front and 9x17 rear rims.
It is Fuchs replica wheels as you can see. They have almost the same weight as 16x9 original Fuchs and they work great


I have never liked the original steering wheels for the old 911 so i use a suede Momo GT2 wheeel. I also like to use rubber floor mats
I have been thinking of replacing the clock with a boost gauge

[copbait73]

Do you have pictures of the engine? What of charge cooling? Still Motronic?

Leave the boost as is or you will be working and spending on this engine more than driving it.

[MrShades]

The car works good as is. I think i will change the intercooler, hoses and hose clamps but that is most because of looks

Just changing to hose clamps like the one on the picture below looks better. I usually change all of the hose clamps with plastic on them and also every wire connection that uses ply on connectors which i solder on


This is the one in my car at the moment and i am not pleased with how it looks. The core is thin too


I want a intercooler that looks something like this
or this

[911TT33]

Nice looking car. Very stealth

Agree, be very careful with the 915. I'd save and step up to a G50 if I were you. A 6 speed box would be awesome!

Can you post some pics of the underneath, such as headers, turbos, exhaust etc?!

[totle]

Hei. Where are you located?
Give me a call if you want to discuss some issues, 90884590

And as 911TT33 mention, please take some more pictures of the setup.


Trond

[MrShades]

The way i want the intercooler is to have the hoses to the turbos at the back and straight down to the tubos. Then i can use silicone hoses and everythig looks much better.

The set up with the car i am very pleased with

Swapping to a G30 box is to much work for me at the moment but that sure would have been fun

[race911turbo]

Twin turbo intercooler in my 930.

[DSPTurtle]

Originally Posted by race911turbo

Twin turbo intercooler in my 930.

Dang dude... looks like you been using your cooling fan to grind up bodies or something. That's some scary $h!t!!!

[MrShades]

Really nice set up And your turbos is bigger than the ones on my car

Is that two 12" x 10" x 4" intercoolers welded together? Have you bought the intercooler from Albert Liang at goingsuperfast?

It looks really nice and that is the look i really like

Are you pleased with the intercooler?

[911TT33]

Those are some BIG snails At a guess, I'd say they are either GT30R's or GT35R's ?! Am I correct? How quick do they spool race911turbo? I would have gone for some nice GT28RS turbo's for that configuration for quicker spool and decent top end power (~700 crank HP)

[mamut]

Originally Posted by MrShades

Really nice set up And your turbos is bigger than the ones on my car

Is that two 12" x 10" x 4" intercoolers welded together? Have you bought the intercooler from Albert Liang at goingsuperfast?

It looks really nice and that is the look i really like

Are you pleased with the intercooler?

Those look like gt35's with Tial SS hot housings, to big for the displacement.
Race911turbo=Albert Liang

[911TT33]

Yep, on a 3.8 or 4.0 big bore motor they'd be OK, but on a 3.3, they're too big

When do you get full boost, Albert? Way past 4K RPM I would think

MrShades, what size Garretts do you have on your TT setup? T3's?

[race911turbo]

Originally Posted by 911TT33

Yep, on a 3.8 or 4.0 big bore motor they'd be OK, but on a 3.3, they're too big

When do you get full boost, Albert? Way past 4K RPM I would think

MrShades, what size Garretts do you have on your TT setup? T3's?

4300 RPM = 0.5 bar of boost, still stock internal. Too big.... but drives pretty well...

I have 2x GT 35R turbocharger,2x wastegate, intercooler for twin turbo, sitting in the shop.
One week I got nothing to do I cut the header and put everythings on 1989 930. I live 1 mile up on mountain in Taiwan, twin GT-35R turbo is not that bad.....Ball bearing turbocharger spinning well at low end, light pressure.

My plan is getting LN engineering 3.4 L cylinder and pistons, GT-2 EVO cam, race valve spring, twin plug, Pauter rods, raceware head studs. up the engine redline to 8000RPM.

[race911turbo]

Originally Posted by MrShades

Really nice set up And your turbos is bigger than the ones on my car

Is that two 12" x 10" x 4" intercoolers welded together? Have you bought the intercooler from Albert Liang at goingsuperfast?

It looks really nice and that is the look i really like

Are you pleased with the intercooler?

Yes, race911turbo= Albert Liang

[race911turbo]

Originally Posted by DSPTurtle

Dang dude... looks like you been using your cooling fan to grind up bodies or something. That's some scary $h!t!!!

Intercooler in 1986 Carrera with 965 turbo motor.

[911TT33]

Originally Posted by race911turbo

4300 RPM = 0.5 bar of boost, still stock internal. Too big.... but drives pretty well...

I have 2x GT 35R turbocharger,2x wastegate, intercooler for twin turbo, sitting in the shop.
One week I got nothing to do I cut the header and put everythings on 1989 930. I live 1 mile up on mountain in Taiwan, twin GT-35R turbo is not that bad.....Ball bearing turbocharger spinning well at low end, light pressure.

My plan is getting LN engineering 3.4 L cylinder and pistons, GT-2 EVO cam, race valve spring, twin plug, Pauter rods, raceware head studs. up the engine redline to 8000RPM.

What A/R are you running in the hot housing on those GT35R's? 0.63?

What sort of HP are you aiming for? 1000+ HP?

I personally would prefer a twin GT28RS setup to make that car a LOT more enjoyable, and still have excellent response and tonnes of power

Also, the length of those headers won't help response times on those massive GT35R's

[race911turbo]

Originally Posted by 911TT33

What A/R are you running in the hot housing on those GT35R's? 0.63?

What sort of HP are you aiming for? 1000+ HP?

I personally would prefer a twin GT28RS setup to make that car a LOT more enjoyable, and still have excellent response and tonnes of power

Also, the length of those headers won't help response times on those massive GT35R's

It drives better than what I was expected. I run around without idle control valve....I can start cold engine without step on the gas.

I got 6x 82 lbs fuel injectors, AN-10 fuel lines, Aeromotive fuel pump rated for 1200 HP. Fuel and Air side I am ready for 1000 HP.

[mamut]

My plan is getting LN engineering 3.4 L cylinder and pistons, GT-2 EVO cam, race valve spring, twin plug, Pauter rods, raceware head studs. up the engine redline to 8000RPM.[/QUOTE]

IMHO, Still too big for that combination, a pair of gtx3071r's will do much better.,cheers,Stefan.