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Old 06-18-2007, 02:39 PM   #256
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

you guys mean power to weight ratio.
ben's car was uber light with 3xx whp....the car can be faster with something that has more whp all because of how light it is.


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Old 06-18-2007, 02:47 PM   #257
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

wow did i read correctly ben was 2500-2800 lbs? That ha to be fun to drive. @ 20-40+ extra hp/tq to the wheels this seems like a good value at the 1K level.
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Old 06-21-2007, 09:46 PM   #258
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

Hey guys, I skimmed through this thread to find some info but would like to hear from those of you that have been following it. I picked up one of these and will be doing the install this weekend. My question is this. I have Cusco engine and trans. mounts and also the TiC Klunk Killer set. From what I have gathered about vibrations, some of you have good luck with the hardened mounts and some not. What do you guys think? Just try it and see what happens or should I be switching back to stock on any of my mounys or bushings? Thanks for the time.
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Old 06-22-2007, 05:41 PM   #259
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

I say try it first before you take any mounts off. The DS install/uninstall is easy enough that it's worth giving it a shot before you go to the added trouble of replacing other stuff.
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Old 06-22-2007, 06:14 PM   #260
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

Thanks for the reply.
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Old 07-28-2007, 08:30 AM   #261
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

05cgm - How did the install go and what are your impressions?
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Old 08-14-2007, 11:41 PM   #262
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

whats the deal, all the ppl on here say they haven't gone over 100 so how can i trust them its legit. Is this really worth a grand.
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Old 08-15-2007, 06:22 AM   #263
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

Quote:
Originally Posted by jermdeez
whats the deal, all the ppl on here say they haven't gone over 100 so how can i trust them its legit. Is this really worth a grand.
Do you mean over 100mph? I've easily gone over 100mph since I've had my driveshaft on...no problems. Is this worth 1100...no. Like I've said before, if you can find a used one for 400-500 less then go fo it.
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Old 08-15-2007, 06:53 AM   #264
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

Up to you if it's worth a grand, but I've taken mine up to 110 or 115 at the track and it's fine.
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Old 08-15-2007, 07:00 AM   #265
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

I did 130 numerous times at my track day at Big Willow with no issues. Have daily driven on it also since I got it. NO PROBLEMS.
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Old 08-15-2007, 07:03 AM   #266
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

Quote:
Originally Posted by krees23
05cgm - How did the install go and what are your impressions?
Sorry, just saw this. I am very happy with my decision to buy this part. In fact, I noticed that on the straight away after Turn 1 at Big Willow, I would actually run out of gear just before Turn 2. Most likely from revving through the gears just a tad quicker. I will be putting it to use again at Laguna Seca in Nov.
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Old 08-15-2007, 02:52 PM   #267
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

Quote:
Originally Posted by 05cgm
Sorry, just saw this. I am very happy with my decision to buy this part. In fact, I noticed that on the straight away after Turn 1 at Big Willow, I would actually run out of gear just before Turn 2. Most likely from revving through the gears just a tad quicker. I will be putting it to use again at Laguna Seca in Nov.
Let us know how you do at Laguna Seca. Thats a fun track!
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Old 08-15-2007, 03:52 PM   #268
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

Quote:
Originally Posted by jermdeez
whats the deal, all the ppl on here say they haven't gone over 100 so how can i trust them its legit. Is this really worth a grand.
ive been at 160 mph on mine. no problems. i posted a vid of it somewhere on here, i raced a obp sti that was on a race gas tune after i cought and passed him the vid went to the speedo for a 160 shot.

edit for vid: http://s81.photobucket.com/albums/j2...t=MOV00672.flv
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Old 08-15-2007, 07:01 PM   #269
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

Quote:
Originally Posted by grim09
Let us know how you do at Laguna Seca. Thats a fun track!
Yeah, great track I went there within a week or two of getting my ACPT installed. No better testing ground...
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Old 08-18-2007, 07:21 AM   #270
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Default Re: ACPT Carbon Fiber Driveshaft, Thread #2

Seems like an interesting mod if one had the money.
For future referencers i wouldnt consider this mod being the same as just removing X amount of weight off your car. Rotational mass reductions holds a much bigger effect/ improvement than just regular weight loses.
Thats why lightened wheels and etc make differences more than say taking the back seats out of your car. I believe every 1lbs you take off of rotational mass could indirectly be compared as taking 10lbs off your car. So youd have to take 100lbs off your car to equal the gains of taking 10lbs of a rotational mass. ( I will have to look up my sources of that information. )
In all honestly i would like to assume this d/s is similar to doing a light weight flywheel. Most of the noticable gains are most likely torque and not hp. I wonder how a light flywheel and the acpt drive shaft respond together... Sounds like theyd work together well..
Oh and one more note, for those who have a set rpm launch, stuttarbox, you will have to raise it higher with lighter drivetrain parts because remember now that the rpms drop faster than before therefore say you were launching at 6grand before, its going to fall to say 500rpms lower than before by the time it gets going due to less rotational inertia, therefore bumping the launch rev a little higher should equalize the rpms you take off at with your previous before acpt d/s settings.
On my awd dsm i had to increase the stuttarbox launch rpms from 5000, to 5500 to get the same kind of launch due to a light weight flywheel as an example.


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Last edited by MidniteTunez; 08-18-2007 at 07:26 AM.
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