is the aor trans worth it over the other lsd ones?
#1
Race Car
Thread Starter
is the aor trans worth it over the other lsd ones?
Is the AOR trans worth the extra $500 compared to the other 5R(LSD and Cooler) or 9U(LSD, no cooler)? I just want to be able to have both wheels spin and take some abuse at 300whp.
thanks
thanks
#3
Rennlist Junkie Forever
The deal with the AOR transmissions is that they have a hardened 1st & 2nd gear and a tighter LSD.
The reason they hardened the 1st & 2nd gears is that they are not as strong as the other gears because they have fewer teeth. And the part that was hardened was the pinion as 1st & 2nd gears are actually part of the pinion shaft. Fewer teeth means more load on each tooth.
For everything except a powerful track car, you'll never realize the benefit from an AOR over a regular LSD turbo trans.
TonyG
#4
Three Wheelin'
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This raises a question, how much abuse can the LSD trannys take? I have a 5R and was wondering, as I had a LSD in an N/A and that blew with little abuse.
I have seen people drifting turbos, if I tried to do that with my N/A it prob would have blown the LSD in a matter of seconds!
I have seen people drifting turbos, if I tried to do that with my N/A it prob would have blown the LSD in a matter of seconds!
#5
Three Wheelin'
944 NA transmissions are weak, its no surprise you blew one up.
I have seen a few 951 transmissions with worn/missing/chipped teeth on the ring gear. So they aren't exempt from failing either, although they are much stronger than an NA
Here is a quick list of what will destroy it.
Clutch drops
If you Use your imagination, there are a lot of variations dropping the clutch in an 'enthusiastic' manner ( between shifts, drag racing, to drift, etc ). Stay away from those, and you'll break yours. Also, Stickier tires aggravate the situation.
I have seen a few 951 transmissions with worn/missing/chipped teeth on the ring gear. So they aren't exempt from failing either, although they are much stronger than an NA
Here is a quick list of what will destroy it.
Clutch drops
If you Use your imagination, there are a lot of variations dropping the clutch in an 'enthusiastic' manner ( between shifts, drag racing, to drift, etc ). Stay away from those, and you'll break yours. Also, Stickier tires aggravate the situation.
#6
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The AOR tranny comes only with the 88-89 Turbo S was indeed hardened to cope with the added torque of the turbo S. This is what happened to my 5R tranny when I had 355rwhp & 352RWTQ
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#8
Rennlist Junkie Forever
What I learned is to never use 2nd gear on the race track. There's not enough teeth (same for 1st... but nobody uses first on the race track)...
Problem solved.
TonyG
#9
Pro
Yeah, but that's just not practical on some tracks. Laguna has two turns that you need to drive off from in second.
#10
Three Wheelin'
I could see heavy track use in a very powerful/torquey car causing that as in Tony's case.
But, dropping the clutch is the usual cause of such carnage. I have seen on several transmissions driven by bone stock engines, Turbo and NA. These transmissions are actually very strong when used properly, but abuse or lots and lots of torque will cause this.
But, dropping the clutch is the usual cause of such carnage. I have seen on several transmissions driven by bone stock engines, Turbo and NA. These transmissions are actually very strong when used properly, but abuse or lots and lots of torque will cause this.
#11
Rennlist Junkie Forever
No matter... if you make a lot of power on sticky tires and you use 2nd gear..... it will break.
TonyG
#12
I have many times. BUT... I always shift soft and smooth.. Somewhat Quickly. But smoothly. My Second will hold if you roll on it. But that is just my trans, and I will NOT drive harsh on anyone else car for fear of breaking like stated above.
#14
Rennlist Junkie Forever
315 sticky tires with 400ft tq at the wheels, will rip off all the teeth on 2nd gear eventually. I got a couple of nice input shaft paper weights to prove it. :-)
Now I just don't use 2nd gear on the race track. Besides... even though it feels otherwise.... the car car is actually faster not having to shift.
TonyG