i was wondering how an aluminum drive shaft helps performance and what to expect. is it the lighter weight or the strength?
aluminum drive shaft
- Thread starter brian98gt
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BensBACobra
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brian98gt said:
i think its similar to the idea behind an alum flywheel, lighter drivetrain components can help the engine rev faster and accelerate smoother, as far as that being translated on the dyno, dont think you'll see any hp gain from it but it does imporve acceleration and thus, the driving experience.
I would think that torque would show up more than HP anyway. You're going to get the tires spinning faster sooner with a lighter DS, hence more torque. As you get into the higher RPM range, the weight difference isn't going to matter for HP numbers. Maybe be a little more HP down low, but everyone only looks at that top number..
This could turn into an endless debate, but my spin:
aluminum > cf > stock
Something about fibrous material handling all that torque just doesn't sit well with me.
aluminum > cf > stock
Something about fibrous material handling all that torque just doesn't sit well with me.
BensBACobra
New Member
timeless2 said:
I dont think lighter materials translate into being weaker. They certainly arent weaker than stock. Besides, aren't some of the more heavier duty clutches for manual tansmissions significantly smaller in diameter compared to those that are "factory-like replacements?" Isnt the idea there to reduce weight also?
I state my case based upon experience and I have seen 2 CF shafts splinter like wood at the road course. AL shafts will likekly never do this.BensBACobra said:
Won't argue with you on the basal concept of weight reduction, but the track record I've seen puts the minimal weight difference between AL & CF shafts as a lesser priority than reliability. In application, the CF shaft might get you to the finish line faster, but the AL shaft will get you there for certain (ceteris paribus).BensBACobra said:
95 yellow 5 0
Founding Member
only babied 100 miles so far since install. hear whining (almost whispery sound of metal spinning against metal) only in 3rd and 4th gear really when the throttle is first pressed and as the car speeds up it goes away. can't tell if it's coming from the rear or clutch.
it also vibrated pretty bad on the highway from 2700-3500 RPMS in 5th.
I am going to have the stock d/s put back on tomorrow and see if there is a difference... I'm thinking it will vibrate more but the mechanic says to try it. I went back to the machine shop to ask if the aluminum one they cut isnt balanced right and they said they'd fix it if it was the reason the car vibrated. what else can i check?
also on my last clutch i'd get a sharp squeak noise whenever i shifted fast/hard. tryin to turn left on a main st in traffic had to shift quick 1st to 2nd and it made that noise... any ideas to help me out are appreciated.
it also vibrated pretty bad on the highway from 2700-3500 RPMS in 5th.
I am going to have the stock d/s put back on tomorrow and see if there is a difference... I'm thinking it will vibrate more but the mechanic says to try it. I went back to the machine shop to ask if the aluminum one they cut isnt balanced right and they said they'd fix it if it was the reason the car vibrated. what else can i check?
also on my last clutch i'd get a sharp squeak noise whenever i shifted fast/hard. tryin to turn left on a main st in traffic had to shift quick 1st to 2nd and it made that noise... any ideas to help me out are appreciated.
thanks for all the input, i will probably end up going with a frpp aluminum driveshaft. i wasn't expecting much, but i guess with this and all the other mods it can only help 1/4 mile times and not hurt, and its not that expensive. i'm running out of cheap mods and don't have 6,000 to drop on a supercharger yet so i'll keep searching for cheap ways to make my car faster.
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