997 turbo engine and a 997 CUP/RSR sequential transmission in a 993??
09-10-2013, 05:03 PM
#1
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997 turbo engine and a 997 CUP/RSR sequential transmission in a 993??
I need more power...a 700hp 993t track engine will cost a fortune, a 700hp 997t track engine on the other hand will be much cheaper. And in order not to loose time while shifting gears, a 997 CUP or RSR sequential gearbox is in order.
Anyone done this in a 993? Possible? Feasible?
Anyone done this in a 993? Possible? Feasible?
09-10-2013, 05:14 PM
#3
Agent Orange
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I've seen a GT3 engine bolted to a 1974 911, so why the hell not. But you will have to get VERY creative with cooling. There are A LOT of radiators in my 997TT, as well as intercoolers, etc. And that's on a stock car. To push 700HP you'll need even better cooling...
09-10-2013, 05:28 PM
#4
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Thread Starter
Fitting radiators up front shouldn't be a problem...lot's of space there and REALLY good flow through the EVO bumper. For intercooling GT2RS cores should handle it (that's what I have on my Eaton heat pump now...)
Here's a comparison speed vs position between my 993 and a friends stock 6GT3.
The GT3 starts pulling away after 140km/h...at 180km/h it's a rape!
You can see the in the left side, my car is doing 140km/h and longitudinal acceleration is 0.266*G and the GT3 at the same spot is already doing close to 150km/h and still accelerating strong by 0.325*G
You can also see where my aero is helping me...in the middle of the graph (where the greatest speed is achieved) you can see how my friend needs to lift a little in the GT3 (this is a +190km/h left hand sweeper, not a straight) and I can plow through the turn with my foot planted.
It is all because of my aero. It works very well in corners but really kills the acceleration after 140km/h. This is why the factory cars had +600hp...
Don't get me wrong...the car is stupid fast but I got used to the power already and the chassis is ready for big power.
Here's a comparison speed vs position between my 993 and a friends stock 6GT3.
The GT3 starts pulling away after 140km/h...at 180km/h it's a rape!
You can see the in the left side, my car is doing 140km/h and longitudinal acceleration is 0.266*G and the GT3 at the same spot is already doing close to 150km/h and still accelerating strong by 0.325*G
You can also see where my aero is helping me...in the middle of the graph (where the greatest speed is achieved) you can see how my friend needs to lift a little in the GT3 (this is a +190km/h left hand sweeper, not a straight) and I can plow through the turn with my foot planted.
It is all because of my aero. It works very well in corners but really kills the acceleration after 140km/h. This is why the factory cars had +600hp...
Don't get me wrong...the car is stupid fast but I got used to the power already and the chassis is ready for big power.
09-10-2013, 05:37 PM
#6
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09-10-2013, 06:35 PM
#8
Race Director
you priced a cup sequential box or modified 997tt engine and all the mods to get it in? if you think this will cost less than a fortune, you are dreaming imho.
i think you simply own the wrong car if these are your goals.
i think you simply own the wrong car if these are your goals.
09-10-2013, 08:13 PM
#9
Rennlist Member
Juha,
Friend of mine just rebuilt his 997tt motor with the usual comprehensive upgraded internals and an intercooler/turbo package from Champion. When all was said and done, dyno, mapping, etc., he spent 50k on the rebuild (parts & labour). And of course he already owned the motor. Motor is good for an easy 800hp.
That's just as a reference point.
If you go with a 997 sequential box - and you can find a used one that isn't grenaded - you're looking at 25hr rebuild intervals that could easily run to 15k with parts & labour.
Add that to engineering, plumbing & rads for a cooling system and god knows what else and....
I would forget all that and build a rock solid 993tt motor shooting for 550hp with a tilton CF clutch, 997 cup flywheel, turbo axles, upgrade your LSD, side plate, shift forks... and go have fun
Friend of mine just rebuilt his 997tt motor with the usual comprehensive upgraded internals and an intercooler/turbo package from Champion. When all was said and done, dyno, mapping, etc., he spent 50k on the rebuild (parts & labour). And of course he already owned the motor. Motor is good for an easy 800hp.
That's just as a reference point.
If you go with a 997 sequential box - and you can find a used one that isn't grenaded - you're looking at 25hr rebuild intervals that could easily run to 15k with parts & labour.
Add that to engineering, plumbing & rads for a cooling system and god knows what else and....
I would forget all that and build a rock solid 993tt motor shooting for 550hp with a tilton CF clutch, 997 cup flywheel, turbo axles, upgrade your LSD, side plate, shift forks... and go have fun
09-10-2013, 08:34 PM
#10
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Sell your 993 (to me)
OR
install a built 993TT motor with a good tune and a sequential shifter.
What you burn in the 993 engine build will be cheaper then a 997 frankenstein install.
Your next build should be a tuned 997GT2 with full clubsport cage,cup doors and CGT seats.
(RSR wheels and body work would be a bonus.)
If you want faster shifts you could always build a tuned 997.2 PDK Turbo S, convert to 2wd, GT2 uprights, suspension, cup doors, sunroof delete, CGT seats and full clubsport cage. (full rsr body work would be a bonus. see below)
OR
install a built 993TT motor with a good tune and a sequential shifter.
What you burn in the 993 engine build will be cheaper then a 997 frankenstein install.
Your next build should be a tuned 997GT2 with full clubsport cage,cup doors and CGT seats.
(RSR wheels and body work would be a bonus.)
If you want faster shifts you could always build a tuned 997.2 PDK Turbo S, convert to 2wd, GT2 uprights, suspension, cup doors, sunroof delete, CGT seats and full clubsport cage. (full rsr body work would be a bonus. see below)
09-10-2013, 10:16 PM
#12
Rennlist Member
I was just talking to my mechanic this past weekend about a GT3 engine in a 993. He paused for a moment and said that anything was possible, especially when you have deep pockets. Hopefully you have deep pockets.
09-10-2013, 10:34 PM
#13
Race Director
why not just buy a cup car...it will likely be cheaper, and the whole thing is purpose built.
If you can't turn a fast lap in that, well, you may need to work on driving.
If you can't turn a fast lap in that, well, you may need to work on driving.
09-10-2013, 10:53 PM
#14
Rennlist Member
Or maybe an little ol' E36 M3 (last weekend at the NASA Nationals at Miller):
09-10-2013, 11:49 PM
#15
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Hey Juha,
Your best bet is to build a good bullet proof air cooled engine, it can be done, it will be cheaper than your dream project. On the other hand, I just did a GT2 RS gearbox (G9788) conversion on a 993TT, and that can be done without much problems, then you can throw an SQS sequential and you will have a quick car with excellent shift throws.
sonny1.
Your best bet is to build a good bullet proof air cooled engine, it can be done, it will be cheaper than your dream project. On the other hand, I just did a GT2 RS gearbox (G9788) conversion on a 993TT, and that can be done without much problems, then you can throw an SQS sequential and you will have a quick car with excellent shift throws.
sonny1.