OBX Helical LSD
#101
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OK i have the car back, and it actually drives!!!! The machine shop measured how far it was out, and it was out .007, not .010, but enough to cause massive problems. They said it appeared that it just missed that part in manufacturing or something. Anyways the differential is super quiet and very smooth, I've done a couple of boosted pulls from 3rd and 4th, but no launches yet. But so far it's doing great.
And it turns out my old differential was in fact an open diff. It's just an open piece of crud with the spider gears. So this should allow me to have way more traction in drag racing, and I'm expecting some good things. It cost me $100 worth of machine labor to make it perfect, so if you want to go this route, consider that cost.
On my way home tonight I'll do a launch and see what happens.
And it turns out my old differential was in fact an open diff. It's just an open piece of crud with the spider gears. So this should allow me to have way more traction in drag racing, and I'm expecting some good things. It cost me $100 worth of machine labor to make it perfect, so if you want to go this route, consider that cost.
On my way home tonight I'll do a launch and see what happens.
#104
Boost Czar
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true, but on a torsen, if the one wheel starts to spin it has zero traction and cannot transfer torque to the other...one wheeled burned out?
Open diffs supply torque to the wheel with the least traction
Torsen diffs transfer torque over to the wheel with the most traction. It's impossible to transfer torque that's not there (tire off the ground).
I guess in the least you'll have 50% traction as opposed to zero?
Open diffs supply torque to the wheel with the least traction
Torsen diffs transfer torque over to the wheel with the most traction. It's impossible to transfer torque that's not there (tire off the ground).
I guess in the least you'll have 50% traction as opposed to zero?
#107
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As far as I know, its not a hybrid of one type or the other, its pretty standard stuff....
#110
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Holy ****, the OBX diff is definitely working. I was turning right down a road and slowed down to low first. I turned the wheels and decided to give it some gas. Couldn't believe how sideways the car got... Then a little farther up the street I came to a stop and turned launch control on. Just as a refresher my car holds at 4500rpm with launch control on and makes 5psi of boost. Sweet monkey jesus I've never laid rubber down like that. There was a party going on in the rear end.
If you have an open diff, buy this. Do it now.
If you have an open diff, buy this. Do it now.
#115
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So did you do the polishing/deburring of the case or no? I'd be so interested in buying a few of these and polishing/glass beading and doing the washer mods and reselling them to interested parties. Pretty easy for me to do and I can charge less than a machine shop /etc for labor.
I'm more interested in hearing about your car after 5k miles. Also, what diff fluid are you using?
I'm more interested in hearing about your car after 5k miles. Also, what diff fluid are you using?
#116
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So did you do the polishing/deburring of the case or no? I'd be so interested in buying a few of these and polishing/glass beading and doing the washer mods and reselling them to interested parties. Pretty easy for me to do and I can charge less than a machine shop /etc for labor.
I'm more interested in hearing about your car after 5k miles. Also, what diff fluid are you using?
I'm more interested in hearing about your car after 5k miles. Also, what diff fluid are you using?
#118
Elite Member
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Join Date: Jan 2007
Location: Los Angeles, CA
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So did you do the polishing/deburring of the case or no? I'd be so interested in buying a few of these and polishing/glass beading and doing the washer mods and reselling them to interested parties. Pretty easy for me to do and I can charge less than a machine shop /etc for labor.
I'm more interested in hearing about your car after 5k miles. Also, what diff fluid are you using?
I'm more interested in hearing about your car after 5k miles. Also, what diff fluid are you using?