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Join Date: Mar 2003
Location: dfw, texas
Posts: 1,137
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is it feasable to LSD my tranny?
is it possible to just bolt on a diff from an LSD to a non-LSD tranny as an upgrade?
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04-02-2004, 12:26 PM
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Location: Edmonton, Alberta, Canada
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You can.... but its still not cheap.... diffs can easily cost 800+
and then you have to install it.............
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Alex - PCA Polar Region - Boxster Muncher 86' 944 Turbo - Megasquirt - 326 rwhp/340lbft @ 18 psi SOLD www.edmontonhomelife.com www.edmontonrealestate.ws |
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04-02-2004, 12:54 PM
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Non Compos Mentis
Join Date: May 2001
Location: Off the grid- Almost
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When your tranny has to come out for some reason is the time to add a LSD.
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04-02-2004, 01:07 PM
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Location: Kansas City
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Are you wanting to add LSD to your existing tranny, or just swap out for a different transaxle that has LSD? Plenty of options available, altho its cheapest to just swap complete trannys, assuming you get a decent one (which is always somewhat of a gamble, unfortunately). If you want to add to your existing tranny, Quaiffe and Guard Torsen units are very nice for a bit over $1000 each, but you then have to get them installed by someone who knows what they are doing.
Regards,
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Scott Harrison '82 928 Wife's car '83 944 track car '84 944 daughters car now... '87 951 the Gen'l Sherman '92 968 cab Garage Queen www.kcws.org member |
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04-02-2004, 06:49 PM
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Location: Calgary, AB
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Hmm.
I would avoid installing a used LSD in your tranny. They are a clutch type, and do wear. I heard that the LSD's from an audi 5000 series are compatible (i.e. identical), I would double check before buying one, but I think if it has an audi name written on it it will be cheaper.
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04-03-2004, 10:55 AM
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Either way you do it, keep in mind that your ring and pinion are a matched set. You must remove your old ring gear and install it on the LSD differential.
AFJuvat
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Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
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04-03-2004, 08:31 PM
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Used fatory LSD units can be "rebuilt" to new spec in about an hour, so thats not a deal killer in my book. You do want to make sure you replace the clutches before throwing it in, of course, as there is nothing quite like buying and installing an LSD unit and then finding out that it doesn't limit slip...
 I looked into the Audi units before, they are not quite identical and I was led to believe that it is not suitable for our cars. Do you have more info you can shed on the subject? It would be great to hear from someone who has done that successfully. Regards,
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Scott Harrison '82 928 Wife's car '83 944 track car '84 944 daughters car now... '87 951 the Gen'l Sherman '92 968 cab Garage Queen www.kcws.org member |
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04-04-2004, 07:20 AM
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I didn't know they could be rebuilt that easily. Is there somewhere these parts are available?
I don't think I can shed any more light on the subject. What I was saying is just what I have heard, sorry, no first hand knowledge.
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2010 Hyundai Elantra Touring, GLS 5 speed, Indigo Blue Metallic. 2.0L of Korean fury! Buy my parts! |
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04-04-2004, 08:32 PM
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Best deal in the world, in my opinion, is to ship the entire thing off to Kevin Gross at Castellus Engineering and let him go through the entire tranny. The LSD rebuild will cost you a whopping one hour of labor, plus parts.
As far as the parts you need to rebuild the LSD clutches, they used 917 parts originally, altho they have long since been supersceded by different parts. I can look up the part numbers for you if you need it, but they are pretty commonly available. Let me know if I can help. Regards,
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Scott Harrison '82 928 Wife's car '83 944 track car '84 944 daughters car now... '87 951 the Gen'l Sherman '92 968 cab Garage Queen www.kcws.org member |
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04-04-2004, 08:59 PM
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Thats the guy that built mine.....
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Alex - PCA Polar Region - Boxster Muncher 86' 944 Turbo - Megasquirt - 326 rwhp/340lbft @ 18 psi SOLD www.edmontonhomelife.com www.edmontonrealestate.ws |
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04-04-2004, 09:12 PM
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does anyone have info for kevin gross?
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04-04-2004, 11:53 PM
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Email Kevin at kgross@connact.com. He's usually pretty quick to get back to you.
Kevin really is THE best at 944 trannys. He's not going to be the absolute cheapest way to go, but I can guarantty you that it will cost you a lot more if the guy installing your LSD screws it up... Regards,
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Scott Harrison '82 928 Wife's car '83 944 track car '84 944 daughters car now... '87 951 the Gen'l Sherman '92 968 cab Garage Queen www.kcws.org member |
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04-05-2004, 06:13 AM
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Location: nj
Posts: 140
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Phantom Grip.
they make an lsd-type device for way less than 800, but you have to take the trans apart.. |
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04-05-2004, 09:56 AM
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I finally got mt tranny re-built and installed a Torsen II from Powerhaus and the car pulls like ***** from the apex. No slipping or sliding, just GRUNT, you're through the turn. Well worth the price of admission and the down time required. Just mind what AFJ says about the R&P. Make sure yours is in top notch shape or you will be pulling the tranny out again to replace the R&P. Don't shim the ring gear too tight and be sure to double check the back lash.
Remember, you lift you lose!!! Steve
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My life is great! Prev. rides - 87 924GT, 86 Carrera, 69 Targa, 85.5 944 track car, 86 951 84 Triple Black 911 - Current |
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04-05-2004, 12:32 PM
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1987 Porsche 924GTS 2.5
