88 Twin Turbo Dyno Update! - 5 liter - 941hp/751tq at the rear wheels! - Video Added
#32
Nordschleife Master
Congrats mate. That's what i like to see! Us 2.5L guys achieve around 400-450 rwhp if we do everything properly. I wonder if the hybrid stroker will apply to the 928 motors the 944 guys have started to do. From a 2.5 to 2.8L on a offset grind crank or a 3.1L offset grind 968 crank.
Offset grinding the crank is a viable solution as long as one stays within the induction hardening layer. After that, going deeper, I think one has to nitride the crankshaft. One good idea that the 944 people have is turning down the rod journals of the stock crankshaft to 2" diameter, which allows for using of better bearings. I am thinking more people in the 928 world should be doing that.
#33
Is there any pictures of this build and maby enginebay somewhere?
I'm the kind of guy that also may be crazy enough to at least turbocharge my 928. But where do you put the turbos? Under the heads/car? Then what about oil return, do you use a electrical oil pump of some sort?
I'm the kind of guy that also may be crazy enough to at least turbocharge my 928. But where do you put the turbos? Under the heads/car? Then what about oil return, do you use a electrical oil pump of some sort?
#34
Burning Brakes
This is amazing. Way to go Todd. Would love to see / ride in her one day.
Harvey
Harvey
#36
Administrator - "Tyson"
Lifetime Rennlist
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Lifetime Rennlist
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#37
Rennlist Member
Wow...just, wow.
Well done!
Well done!
#39
Archive Gatekeeper
Rennlist Member
Rennlist Member
What tire _could_ put down 940 hp and then not 'roll over' or fall off the bead going around the first turn?
With apologies for reposting Erik's possibly copyrighted picture, looks like 315's. Love the treadwear rating- is that a subtle suggestion that they don't warranty any tread life?
With apologies for reposting Erik's possibly copyrighted picture, looks like 315's. Love the treadwear rating- is that a subtle suggestion that they don't warranty any tread life?
#40
Race Car
pics
Thanks for hosting/putting up the pix! I'm hoping for a track vid, the last iteration really hoovered up the tarmac.
That exhaust/turbo assembly looks just about F1 caliber..first time the term 'off the hook' has popped into my head as anything other than a joke. The floorpan on the other hand....looks a bit more 'functional'....but then I have no idea what F1 floor/suspension work looks like!
I want one. Still interested in trans adaptation and the CV joint/axle composition- kryptonite? haha
Edit- Tires: Temperature C and Traction C?
That exhaust/turbo assembly looks just about F1 caliber..first time the term 'off the hook' has popped into my head as anything other than a joke. The floorpan on the other hand....looks a bit more 'functional'....but then I have no idea what F1 floor/suspension work looks like!
I want one. Still interested in trans adaptation and the CV joint/axle composition- kryptonite? haha
Edit- Tires: Temperature C and Traction C?
Last edited by SMTCapeCod; 07-25-2013 at 04:41 PM.
#43
Rennlist Member
Good Lord what a beast. That is some fine engineering. Congrats!