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Old 08-27-11, 06:44 AM   #1
darbs242
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Default Rough ideas on drivetrain power capacities

I was starting to think about the limits of drivetrain? What do you think our transmission, axels & rear ends will handle in hp/ tq? Anyone know of ISF's having bad luck when really using/abusing the car or can the car take it like a champ?

I havent had anything go yet besides RT cats... and I feel like im putting the car through some loops... launched it with nitrous a few times, had 12 hours of road course time. Car has been holding up... knock on wood.
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Old 08-27-11, 11:24 AM   #2
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I snapped my rear drive AXEL somehow
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Old 08-27-11, 12:22 PM   #3
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Transmission slips around 550+lbs of torque
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Old 08-27-11, 12:49 PM   #4
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Transmission slips around 550+lbs of torque
How is the turbo project coming along?
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Old 08-27-11, 03:47 PM   #5
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one or two people around here blew their "E-LSD"....

You will probably enjoy the F a tad bit more with an OS Giken LSD or a Torsen LSD..

Joe Z
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Old 08-27-11, 04:05 PM   #6
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Quote:
Originally Posted by MRxSLAYx View Post
Transmission slips around 550+lbs of torque
That doesn't sound high

Aren't the Mercedes 5 Speeds limit somewhere at 1000lb-ft torque? Can we just swap one of those hahaha
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Old 08-27-11, 05:48 PM   #7
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Quote:
Originally Posted by LexISguy View Post
How is the turbo project coming along?
Havnt really payed any attention to it. Have plans with the wielder to take it in for intercooler piping in 2 weeks though...
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one or two people around here blew their "E-LSD"....

You will probably enjoy the F a tad bit more with an OS Giken LSD or a Torsen LSD..

Joe Z
A mod I will have to do if I plan on drag racing on a more consistent basis.

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That doesn't sound high

Aren't the Mercedes 5 Speeds limit somewhere at 1000lb-ft torque? Can we just swap one of those hahaha
Naaa. Ill just have to open the transmission up and send out the clutches
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Old 08-27-11, 06:31 PM   #8
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Here is a 630whp ISF where I live. 11.9 due to tranny slipping.. so guess there is your answer.
http://www.youtube.com/watch?v=iSd4qf6InDU
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Old 08-27-11, 08:25 PM   #9
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^^^^^Damn, that is a fast ET for 11.9
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Old 08-28-11, 06:09 AM   #10
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Quote:
Originally Posted by Rider View Post
Here is a 630whp ISF where I live. 11.9 due to tranny slipping.. so guess there is your answer.
http://www.youtube.com/watch?v=iSd4qf6InDU
Only sounds like the transmission could have slipped at the end of 4th during this run. I would say that the 11.9 was due to tire setup and the missed shifts.
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^^^^^Damn, that is a fast ET for 11.9
Do you mean trap? 11.9 is the E.T
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Old 08-28-11, 10:49 AM   #11
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Quote:
Originally Posted by MRxSLAYx View Post
Only sounds like the transmission could have slipped at the end of 4th during this run. I would say that the 11.9 was due to tire setup and the missed shifts.

Do you mean trap? 11.9 is the E.T
Yep, that's what I mean...guess I shouldn't post while drinking
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Old 08-28-11, 05:03 PM   #12
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Quote:
Originally Posted by MRxSLAYx View Post
Only sounds like the transmission could have slipped at the end of 4th during this run. I would say that the 11.9 was due to tire setup and the missed shifts.

Do you mean trap? 11.9 is the E.T


First two shifts were easily tire slip, and not as much as would be expected for how hard it launched and took off, but up top I can detect what very well sounds like trans slip in 4th gear, I agree.
I would like to know the equivalent 60ft time, and see the entire slip for that matter. That trap is a bit higher than your best so far, so it definitely has potential for a much lower ET.

~Dv8
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Old 08-30-11, 08:11 AM   #13
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Quote:
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one or two people around here blew their "E-LSD"....

You will probably enjoy the F a tad bit more with an OS Giken LSD or a Torsen LSD..

Joe Z

Depending on what kind of driving you are doing will greatly help decide the differential set to go with. The OS Giken is a clutch style limited slip which is predominant over the torsen style in any type of turning/cornering. Let me know when you are ready to upgrade Darbs. I'm able to get my hands on some of OS Gikens latest releases in the US and Japanese models at a great price.
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Old 08-30-11, 09:10 AM   #14
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Quote:
Originally Posted by MRxSLAYx View Post
Only sounds like the transmission could have slipped at the end of 4th during this run. I would say that the 11.9 was due to tire setup and the missed shifts.
I detect several Rev Limiter bounces too......

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Old 08-30-11, 12:02 PM   #15
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Quote:
Originally Posted by Dv8tion388 View Post
First two shifts were easily tire slip, and not as much as would be expected for how hard it launched and took off, but up top I can detect what very well sounds like trans slip in 4th gear, I agree.
I would like to know the equivalent 60ft time, and see the entire slip for that matter. That trap is a bit higher than your best so far, so it definitely has potential for a much lower ET.

~Dv8
I would also like to see the entire slip because based on Hp alone, this car should outperform mine. I've trapped 124mph with only 500whp(and a dieing bottle) while this car was able to do the same with 130whp more.
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