Is my trans a 951 trans?
#1
Is my trans a 951 trans?
Well I just ran across a "what's the fastest you've gone" thread and I know I've topped out 4th gear at around 120mph (on a closed course of course, gps verified speedo). I was looking around some other threads and noticed most people with stock 951 trannies will do 130-140 in 4th gear. My tires are 265/35/18.
I don't have any numbers off the trans...I'll have to look when I'm back to the car in a week and a half.
This isn't the only case of me thinking my trans is not original. My option code sticker says it has LSD and a trans cooler (two seperate options), but when I looked under the car it does have LSD, but no cooler.
As far as the different trannies, I thought that it was usually only 5th gear that was different?...maybe I'm wrong though, but it sure seems like my 4th is off.
I don't have any numbers off the trans...I'll have to look when I'm back to the car in a week and a half.
This isn't the only case of me thinking my trans is not original. My option code sticker says it has LSD and a trans cooler (two seperate options), but when I looked under the car it does have LSD, but no cooler.
As far as the different trannies, I thought that it was usually only 5th gear that was different?...maybe I'm wrong though, but it sure seems like my 4th is off.
#3
I could just be imagining things since I haven't driven the car in over a month...but for what I can remember 3rd gear doesn't go more than 100 (where most will do 115 or so) nor did it feel like 4th had another 15-20mph in case I wasn't all the way to redline.
Anyone know what the top speeds for 3rd and 4th are for an S2 trans?
Anyone know what the top speeds for 3rd and 4th are for an S2 trans?
#7
Your owners manual has acceleration curves and transmission diagrams. As per the diagram, the standard 944 trans should put you at about 38 mph at 4000 rpm in 2nd, the 944 turbo is at about 45 mph at 4000 rpm in 2nd. Maybe 72 vs 85 at 4k in 4th.
-Joel.
-Joel.
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#8
Like I said, I'm probably just imagining things and I have a standard 951 tranny..but who knows.
#10
According to http://www.catherineandken.co.uk/sti/tyres.html
A stock 951 with 265/35/18 tire and 6500rpm will do:
1st = 41mph
2nd = 70
3rd = 103
4th = 140
5th = 174
With an S2 tranny and the same redline/tires it would be
1st = 36mph
2nd = 61
3rd = 90
4th = 122
5th = 162
The S2 trans sounds a lot more like what I think mine is...I'll have to check the numbers.
A stock 951 with 265/35/18 tire and 6500rpm will do:
1st = 41mph
2nd = 70
3rd = 103
4th = 140
5th = 174
With an S2 tranny and the same redline/tires it would be
1st = 36mph
2nd = 61
3rd = 90
4th = 122
5th = 162
The S2 trans sounds a lot more like what I think mine is...I'll have to check the numbers.
#12
Well I haven't confirmed the numbers yet but I'm pretty sure I have an S2 LSD tranny in the car. 3rd definitely tops out at 90mph and at 3000rpm I'm at 75mph.
S2:
5th, 3000rpm = 74mph
951:
5th, 3000rpm = 80mph
S2:
5th, 3000rpm = 74mph
951:
5th, 3000rpm = 80mph
#13
My turbo trans runs ~115 in 3rd and 145 in 4th (proven on the dyno)
The S2 trans is much shorter in my red car IIRC my 4th topped at about 125
I remember wishing I had the turbo trans in when playing with Josh's bike on the highway ......hitting fifth gear under full power....... did not like
The S2 trans is much shorter in my red car IIRC my 4th topped at about 125
I remember wishing I had the turbo trans in when playing with Josh's bike on the highway ......hitting fifth gear under full power....... did not like
#14
My turbo trans runs ~115 in 3rd and 145 in 4th (proven on the dyno)
The S2 trans is much shorter in my red car IIRC my 4th topped at about 125
I remember wishing I had the turbo trans in when playing with Josh's bike on the highway ......hitting fifth gear under full power....... did not like
The S2 trans is much shorter in my red car IIRC my 4th topped at about 125
I remember wishing I had the turbo trans in when playing with Josh's bike on the highway ......hitting fifth gear under full power....... did not like
you're 145 in 4th is questionable as i really don't think you're running 7250rpm, unless you've got much taller than stock gearing.
driving from longbeach to phx, az, two months ago, 3k was about 80mph in 5th, confirmed with gps.
87951
95sl320 dd