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1988 Twin Turbo Dyno Results - 5 liter - 825hp/755tq at the rear wheels

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Old 09-15-2012, 11:52 PM
  #16  
Tony
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this thread is worthless without sound!!
Old 09-16-2012, 12:08 AM
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Jim R.
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Nice work Todd!

You did make templates for everything, right?

Jim
Old 09-16-2012, 01:12 AM
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Mark Anderson
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Glad to see ur crazy mind is still at it. To this day I still tell
People about your motorcycle
Old 09-16-2012, 08:30 AM
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Mike Simard
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That's amazing!
The secret of this working so well is your intake, that is a work of art.
Good work!
Old 09-16-2012, 10:25 AM
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Todd T
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The Dyno run was made on E85, it is a flex fuel car, there is a flex fuel senser input to the Autronic SM4 and it will ajust fuel,boost,ing maps, based on % of ethanal.This dyno run it was 72% ethanal-28% gas. Bump in HP chart I think may be tork converter slip,so we stoped tuning, Luke Stubbs tuner of this car thinks,27-28psi boost could make 900+ HP. Intake has no floppy valve.
Old 09-16-2012, 12:48 PM
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90 S-4
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Congratulations, That really is amazing especially since it is on a
bone stock motor without any internal mods what so ever.

This should help the rest of the guys with boost to see what a stock
block can take as long as it has a proper tuneup.

Now go build that purpose built low compression motor and be the first
928 in the world to crack the 1000 rwhp barrier !!! Great Job !!!

I think everyone here would like to see some pictures of the car itself &
and a few underhood shots .
Old 09-16-2012, 01:46 PM
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LT Texan
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Originally Posted by Hilton
The answer to that is easy.. "break something else"

Very nice work Todd. Erik's thread about your twin turbo fitment is excellent reading!

Thanks for posting.. damn your mixture looks good!!
Is that this thread?

Todd's Garage in Green Bay - Twin Turbo 928 S4 in the works - more pics added 2-4-10
Old 09-16-2012, 02:00 PM
  #23  
BC
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I believe that Todd can make 1000 on this block without any change in compression. Lower compression is for getting out of detonation. There is none here.


Originally Posted by 90 S-4
Congratulations, That really is amazing especially since it is on a
bone stock motor without any internal mods what so ever.

This should help the rest of the guys with boost to see what a stock
block can take as long as it has a proper tuneup.

Now go build that purpose built low compression motor and be the first
928 in the world to crack the 1000 rwhp barrier !!! Great Job !!!

I think everyone here would like to see some pictures of the car itself &
and a few underhood shots .
Old 09-16-2012, 02:16 PM
  #24  
FredR
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Wow, an amazing achievement but how much can the stock crank case/girdle handle before it let's go?

I think with that amount going to the rear wheels the last thing I would want is for the wheels to hook up big time- something must surely give [heaven forbid].

Fingers crossed it all stays together for you- to think I would be happy with half that lot turning my rear wheels!

Regards

Fred
Old 09-16-2012, 04:12 PM
  #25  
IcemanG17
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great results..........nice conservative tune too.....11.5 AFR across the board...
Old 09-16-2012, 04:23 PM
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Abby Normal
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That's a freaking monster!!
Old 09-16-2012, 04:35 PM
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BC
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Originally Posted by IcemanG17
great results..........nice conservative tune too.....11.5 AFR across the board...

e85 fuel, but that is on a petrol scale, so thats about....

11.5= 78% of 1 Lambda or 14.7:1 AFR, so take 9.75 and multiply it by .78 and you get....

7.6 on a e85/ethanol scale.
Old 09-16-2012, 04:46 PM
  #28  
17prospective buyer
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Hmm, but how long will it last is the real question. CV joints don't seem to fair well with high power.
Old 09-16-2012, 05:13 PM
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BC
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Todd is controlling slip with various factors. CV joints, transmissions, TTs - these break from undue vibration and harsh "release-catch-release" events just like a block and crank and rods break from detonation and not actual power production.
Old 09-16-2012, 07:29 PM
  #30  
Jon B.
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Let's also not forget this isn't Todd's first Rodeo. He's not just some guy who threw this together all *****-nilly without taking everything into account.


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