RobertGT3

Hi All, has anyone on this forum added a pair of turbos to a GT3? Would be curious to read about it (I did a few searches, but came up short)


Cheers


Robert

LuisGT3

Evoms has built a couple of them.

996FLT6

I saw a rsr twin turbo'd in a PRC race at Sears. I think he qualified 4-5th and at end won the race. The 2nd place cupcar was almost a lap down. 25 min race. Mike

rbahr

Search for Jeff Zwart Pikes Peak hill climb. But that was a cost-no-object build...
Ray

AudiOn19s

There's got to be motivation to do this like building something to class regulations for racing, or the desire to really have something totally unique.

Cause otherwise buy a GT2 and be done with it.

pete95zhn

BBi, Gemballa etc.

993GT

+1 on GT2, or a beater 6Turbo and go full race build on it

RobertGT3

Thanks for the answers all, I have seen the Pike Peak cup car, sounds wild !!


I guess I already have a GT3 996.2, so the option of a GT2, or TT is not desirable for me.


The GT3 engines are supposed to have the titanium rods and valves, so I thought they would be an interesting candidate for turbocharging. Also the engine is well over engineered, designed to rev to 8200rpm, so my thinking is with turbos making huge torque in the mid range, it could end up being a very potent combination that would not need to rev all the way to redline.


Was hoping there was a member that had done this and could share their experiences


Cheers


Robert

TheDeckMan

There was one Evoms built for a guy in AZ that raced Vipers IIRC. It was silver with OZ's and had a GT850 sticker on only one side. Excellence had an article about in 2008/2009 if I recall.

Spyerx

Thats actually a turbo 997.1 (or maybe 996) motor. Was always a turbo.

BBI has done this though. Including on the newer motors.

Number54

Why not start with a GT2 with all the turbo plumbing done?

993GT

Unless its a salvage car, sell and buy a GT2...get ready to cut bodywork for intercoolers and spend $ on engine build... stock Ti rods no good, compression wrong, etc...IMHO, financially way better off buying a 6tt beater and go full build...

A432

PM Markski, I believe Protomotive used a GT3 engine in his 996TT build

https://rennlist.com/forums/private....=newpm&u=12585

powdrhound

Not sure how well turbocharging a GT3 motor would work. If it could be done reliably, you'd see a few out there but you don't. Probably makes more sense to start with a GT2 or TT and heavily modify. I have something along those lines. Turbo Mezger with 3.8 Mahle Motorsport pistons/liners, RSR crank /oil pump, lightweight forged rods, ported heads, high rpm valve train, high flow intake manifold, GT3RS pulley, RS lwfw, etc. Redline at 7500 is not quite as high as a GT3 but with a much lower and flatter power band, tall gearing and tall 997GT size tires it's more than sufficient. On 91 octane, wheel hp is just shy of 600 and wheel torque is 673 ft.lb at 4000rpm. At 4000rpm hp is 500 and ramps up to near 600 at redline. Combined with Cup/RSR chassis components and 997GT2 gearbox gearing, car is a blast with GT3 crushing performance.

CRex

You're looking at a 996 GT2 then, no? I know one can argue the nuances of the M96.76/79 vs the M96.70 (SL), but you're far better off picking up a GT2 with the intercooling etc. plumbed right in the first place.