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> Sebring transmission, What gears for me?
Jetsetsurfshop
post Jan 18 2014, 07:21 PM
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Ok Guys, what do you think....
Want to get a racing tranny for my track car with Sebring in mind. What's the best set-up? Is a LSD a good idea? Quaife? How about a cooler? What's an intermediate plate?
Thanks for the all the help, I'm really green with trannys. (IMG:style_emoticons/default/biggrin.gif)
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wndsrfr
post Jan 19 2014, 08:58 AM
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QUOTE(Jetsetsurfshop @ Jan 18 2014, 05:21 PM) *

Ok Guys, what do you think....
Want to get a racing tranny for my track car with Sebring in mind. What's the best set-up? Is a LSD a good idea? Quaife? How about a cooler? What's an intermediate plate?
Thanks for the all the help, I'm really green with trannys. (IMG:style_emoticons/default/biggrin.gif)


There's an excel worksheet titled "914 901 gear ratio sheet" by Greg Braun you can find the link here:
http://www.914world.com/specs/regearing_901.php

It'll really help you noodle out the options.

FWIW, I'm running 2 cars at VIR which has a 4000' back straight with some uphill in it but a slow entry (Oak tree, about 40mph).
I re-geared my /4 which has a Raby kit 2316 weighs 2200# and puts down 165rwhp redlined at 6200 running Star Spec 225/50/16's to the budget build of A/F/KA/S/Z by flipping 5th and 3rd and buying an S for 4th (thanks Dr. Evil) and don't run out of revs on the straights.
My /6 which has a 2.7 RS spec engine weighs 2000# and puts down 185rwhp redlined at 6800 running 225/45/15 Toyo RA1's is using stock gearing but the tire diameter is about 5% smaller and don't run out of revs on the straights either.
Before I re-geared the /4 I found 5th gear too tall to provide any real acceleration--now it's a perfect match.
If you can grab a spare tranny, send the gear stack to Mike (Dr. Evil) to have him do the budget re-gearing & try it out....I think your car will like it!

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Jetsetsurfshop   Sebring transmission   Jan 18 2014, 07:21 PM
carr914   You want Tall Gears for Sebring. My 2.5 TP had a 9...   Jan 18 2014, 07:45 PM
Matt Romanowski   To choose gearing, we would need to know your moto...   Jan 18 2014, 08:35 PM
brant   What redline. I'm not sure a cooler is needed...   Jan 18 2014, 11:15 PM
wndsrfr   Ok Guys, what do you think.... Want to get a raci...   Jan 19 2014, 08:58 AM
Jetsetsurfshop   Thanks guys- I don't mind the current set-up a...   Jan 19 2014, 12:34 PM
carr914   Why would you want 5th to Redline? You don't h...   Jan 19 2014, 01:58 PM
Jetsetsurfshop   Why would you want 5th to Redline? You don't ...   Jan 19 2014, 02:49 PM
Matt Romanowski   You want to be hitting redline in top gear at the ...   Jan 19 2014, 03:32 PM
carr914   Yeah, til you get to the next Track & don...   Jan 19 2014, 05:09 PM
brant   Yeah, til you get to the next Track & don...   Jan 19 2014, 05:45 PM
carr914   You want to be hitting redline in top gear at the...   Jan 19 2014, 07:05 PM
stownsen914   You want to be hitting redline in top gear at th...   Jan 20 2014, 07:50 AM
brant   Shane, I didn't do a good job at providing y...   Jan 21 2014, 06:01 PM
Jetsetsurfshop   Heres some pictures of my extra transmission. The ...   Jan 22 2014, 09:44 AM
Jetsetsurfshop   :WTF:   Jan 22 2014, 09:45 AM
ThePaintedMan   That, my friend is a tailshifter, which came on th...   Jan 22 2014, 10:04 AM
carr914   A tailshifter can be converted to side-shift, bu...   Jan 22 2014, 01:25 PM
stownsen914   To comment on the option that Brant mentioned to u...   Jan 23 2014, 01:13 PM
brant   To comment on the option that Brant mentioned to ...   Jan 23 2014, 01:19 PM
stownsen914   however interestingly enough we have a local tale...   Jan 24 2014, 08:29 AM
brant   versus an open diff... 120hp 2.0/4   Jan 24 2014, 08:56 AM
r_towle   Carquip used to have a post with all the factory g...   Jan 25 2014, 09:29 AM


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