New Regear and LWF
#31
Drifting
Thread Starter
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Good news eh!!!! Now I wish I had bought the trans instead of passing it on to you. I just picked up a LWF and clutch on ebay so that,s going in mine without altering the gearing. If they( LWF) don,t all rattle and the difference isn,t that obvious there is a chance I have one already as mine grabs revs easily. And I have found other stuff the PO didn,t know about ,like PSS9s
#32
Racer
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The car also has a giac chip and FVD mufflers.,that the Po said nothing about.It has an old PCA sticker on the side window so it was muched loved by one of it,s previous owners.I got a new factory 964 LW flywheel ,pilot bearing, Sachs pressureplate ,disc and ring gear. No guide sleeve or throwout brg. All for $750. The throwout bearing and guide sleeve and bolts are readily available. The seller bought them for a GT2/3 but then changed his mind before installing them because of the rattle noise issue I think.. I hope the Sachs plate isn,t too stiff but it is described as similar to stock feel,less than the 999 motorsport number.
#34
Nordschleife Master
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There isn't really any "typical" regear. Most guys don't have the budget for a $3500 mainshaft with 1&2. East coast tracks are faster than West coast tracks. Changes of 1/2" in tire diameter or 500rpm in redline/shift points have a substantial impact on things. Some have a sliptfit 2nd. Some don't. Sometimes we can work around 1 or 2 stock ratios, sometimes we can't. Sometimes the car is still street driven, sometimes it's always trailered and doesn't need a highway gear.
The G50/31 is a popular solution because it's a generalized box that can be run on most any track in the world and do reasonably well. It's not perfect if one is trying to optimize for a single track or event, but it's a good all arounder. There's a bunch of different ways to configure similar performing boxes based on various different needs of performance, application and budget. If I were to say one thing is typical for 993 regears it would be 3 or 4 gears. But each case really is different and is treated as such when we consult someone on what would be best for them.
#35
Racer
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If I already have one then the new one is going in after the trouble to get at it. I need to replace my 1 st gear syncro and deal with the dragging clutch on the dry splines issue. If I have a LWF already then I will have a used setup available.
#36
Technical Guru
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#37
Rennlist Member
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Good news eh!!!! Now I wish I had bought the trans instead of passing it on to you. I just picked up a LWF and clutch on ebay so that,s going in mine without altering the gearing. If they( LWF) don,t all rattle and the difference isn,t that obvious there is a chance I have one already as mine grabs revs easily. And I have found other stuff the PO didn,t know about ,like PSS9s
#38
#40
Drifting
Thread Starter
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#41
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According to the PET, factory manual set and technical specifications book, the g50/31, 32 and 33 all use the same Porsche Motorsports 40/65 LSD.
You may be right about the syncros as I don't see difference in the PET. Perhaps Steve W or Bill V can verify.
Cheers,
Joe
Last edited by JM993; 11-03-2010 at 01:52 AM.
#42
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Jason is correct wrt the syncros, only the /30 & /32 have the steel syncros and stronger shift fork
wrt lsd all the /3x come w/ the 40/65 which I believe is a 4 plate unit but I've never taken one apart either, it is certainly not the same lsd used in the /2x transmissions
wrt lsd all the /3x come w/ the 40/65 which I believe is a 4 plate unit but I've never taken one apart either, it is certainly not the same lsd used in the /2x transmissions
#43
Racer
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I will need to dismantle to be certain and I am expecting to only find the stock clutch and flywheel. I already have a new LWF and a clutch sitting on the bench waiting for the time to install it.
#44
Nordschleife Master
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Jason is correct wrt the syncros, only the /30 & /32 have the steel syncros and stronger shift fork
wrt lsd all the /3x come w/ the 40/65 which I believe is a 4 plate unit but I've never taken one apart either, it is certainly not the same lsd used in the /2x transmissions
wrt lsd all the /3x come w/ the 40/65 which I believe is a 4 plate unit but I've never taken one apart either, it is certainly not the same lsd used in the /2x transmissions
#45
Race Car
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Does anyone know if the rebuilding process for an LSD is something that could be a DIY, or does it have to be sent to someone like Matt at GT.
Also, does a 997 GT3.1 LSD work in our transmissions?
Also, does a 997 GT3.1 LSD work in our transmissions?