Max Hp and TQ for the 928
#16
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"for how long"....for a short dyno run....almost any tranny will last....but for repeated laps of the racetrack like Anderson-Fan-Veniger with their strokers....even GTS trannies don't last that long....clutches are another issue.....once above about 450ftlbs all of the stock clutches will not last long either......but there are several stronger clutches out there....
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FWIW Todd's transmission has over 100,000 miles on it, no rebuild and has been a daily driver
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You know Mark's car is stock....
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Originally Posted by Brett
So I may well be able to provide an exact listing of when 928 parts break....
Like.....750 hp autobox...850 hp,,,half shafts.....1200 hp....torque tube breaks...etc...etc
Like.....750 hp autobox...850 hp,,,half shafts.....1200 hp....torque tube breaks...etc...etc
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Originally Posted by Matt
Sometimes I wonder if Todd is your imaginary friend.
Then I realize you've never made it to SITM and I've never met you, so I wonder if you're my imaginary friend.
Then I realize you've never made it to SITM and I've never met you, so I wonder if you're my imaginary friend.
#23
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Matt - Todd Exists. I have been in his shop, and in his red 928 with 8 speeds. We went past a WHP just after the speedometer got to 165.
He is the most open, honest, and down to earth car guy I have met in my life, other, than say, Louie and Porken up there where its cold AND it rains.
On the OP question of what the 77 drivetrain will take, I have a 78 TT and a 78 trans that I rebuilt with an LSD, attached to 78 Half shafts (which are solid steel by the way). The engine will be close to these numbers, or over if I can make the E85 work, so I'll let you know if it survives the innitial dyno runs, and street driving. That should be this year if it all goes pretty well.
If it breaks, I don't know, maybe I will have to rethink what to put in there - the rest of the car is pretty strong with some massaging. BUt people have blown up all years of the 928 trans.
He is the most open, honest, and down to earth car guy I have met in my life, other, than say, Louie and Porken up there where its cold AND it rains.
On the OP question of what the 77 drivetrain will take, I have a 78 TT and a 78 trans that I rebuilt with an LSD, attached to 78 Half shafts (which are solid steel by the way). The engine will be close to these numbers, or over if I can make the E85 work, so I'll let you know if it survives the innitial dyno runs, and street driving. That should be this year if it all goes pretty well.
If it breaks, I don't know, maybe I will have to rethink what to put in there - the rest of the car is pretty strong with some massaging. BUt people have blown up all years of the 928 trans.
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#27
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As usual with any race mechanic...... RACE IT, BREAK IT ,FIX IT, REPEAT lol
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In other words, once the first link breaks, then beef it up to make it stronger then try again etc....
All the best Brett
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#28
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Well thanks for the info!
My plans are to go for approx. 500 hp and 500 ft. lbs. tq. "give or take".
This is a street machine.
I think with that amount of power the car will keep me happy for many years to come.
The only thing is I did not want to do this and worry every time I opened her up that somethings going to fail.
My plans are to go for approx. 500 hp and 500 ft. lbs. tq. "give or take".
This is a street machine.
I think with that amount of power the car will keep me happy for many years to come.
The only thing is I did not want to do this and worry every time I opened her up that somethings going to fail.
#29
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Nice discussion,
I was wondering , Brett, what the "contorller" is that allows you to limit the torque\ hp on the drive train incrementally? Or did you mean you will build in stages and see what fails with a known dynoed engine configuration.
Great thread by the way!!!!
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andy
I was wondering , Brett, what the "contorller" is that allows you to limit the torque\ hp on the drive train incrementally? Or did you mean you will build in stages and see what fails with a known dynoed engine configuration.
Great thread by the way!!!!
![jumper](https://rennlist.com/forums/graemlins/jumper.gif)
![jumper](https://rennlist.com/forums/graemlins/jumper.gif)
![jumper](https://rennlist.com/forums/graemlins/jumper.gif)
andy