Looking for a SoCal transmission shop for Guard TBD - open differential swap
01-22-2009, 03:34 AM
#1
Rennlist Member
Thread Starter
Looking for a SoCal transmission shop for Guard TBD - open differential swap
Need recommendations for Southern California (preferably Orange County) transmission shops to swap a Guard Transmission's torque-biasing differential for an open differential in a 1987 951. From the shop manual, it appears there are numerous tools and special gages necessary to do the swap right.
Last edited by slips2; 01-23-2009 at 03:18 PM.
01-23-2009, 03:16 PM
#3
Rennlist Member
Thread Starter
gpr8er, Thanks for the lead.
I just realized an article on the Guard Transmission website was written by Mr. Brown at Precision Motorwerks:
Click here for the complete article, The Limited Slip Differential, from Velocity, 2/2001.
Looks like Mr. Brown doesn't think too highly of TBDs, so I wonder if he will have a "problem" installing one ...
"The last differential that we need to consider is the aftermarket "torque biasing" style. This style differential relies on multiple helix cut gears that are forced outward onto the housing of the differential when tire spin begins to occur. These differentials function almost totally as an open differential while off throttle, which makes them vastly inferior to a limited slip differential, as you will see. I have always considered this style differential to have very limited usefulness on a race course, so I will not spend time discussing them."
I just realized an article on the Guard Transmission website was written by Mr. Brown at Precision Motorwerks:
Click here for the complete article, The Limited Slip Differential, from Velocity, 2/2001.
Looks like Mr. Brown doesn't think too highly of TBDs, so I wonder if he will have a "problem" installing one ...
"The last differential that we need to consider is the aftermarket "torque biasing" style. This style differential relies on multiple helix cut gears that are forced outward onto the housing of the differential when tire spin begins to occur. These differentials function almost totally as an open differential while off throttle, which makes them vastly inferior to a limited slip differential, as you will see. I have always considered this style differential to have very limited usefulness on a race course, so I will not spend time discussing them."
01-23-2009, 07:46 PM
#4
Three Wheelin'
01-23-2009, 10:52 PM
#5
Rennlist Member
Why are you installing it? Do you intend to do DE or track work? Or Auto X? Each one has it's advantages for different uses.
California Motorsports are also very good with trannys, but for some reason I'm not so sure they're in California?? I've used their services before, but via long distance so excuse my lack of knowledge on their whereabouts.
California Motorsports are also very good with trannys, but for some reason I'm not so sure they're in California?? I've used their services before, but via long distance so excuse my lack of knowledge on their whereabouts.
01-23-2009, 11:42 PM
#6
Rennlist Member
gpr8er, Thanks for the lead.
I just realized an article on the Guard Transmission website was written by Mr. Brown at Precision Motorwerks:
Click here for the complete article, The Limited Slip Differential, from Velocity, 2/2001.
Looks like Mr. Brown doesn't think too highly of TBDs, so I wonder if he will have a "problem" installing one ...
"The last differential that we need to consider is the aftermarket "torque biasing" style. This style differential relies on multiple helix cut gears that are forced outward onto the housing of the differential when tire spin begins to occur. These differentials function almost totally as an open differential while off throttle, which makes them vastly inferior to a limited slip differential, as you will see. I have always considered this style differential to have very limited usefulness on a race course, so I will not spend time discussing them."
I just realized an article on the Guard Transmission website was written by Mr. Brown at Precision Motorwerks:
Click here for the complete article, The Limited Slip Differential, from Velocity, 2/2001.
Looks like Mr. Brown doesn't think too highly of TBDs, so I wonder if he will have a "problem" installing one ...
"The last differential that we need to consider is the aftermarket "torque biasing" style. This style differential relies on multiple helix cut gears that are forced outward onto the housing of the differential when tire spin begins to occur. These differentials function almost totally as an open differential while off throttle, which makes them vastly inferior to a limited slip differential, as you will see. I have always considered this style differential to have very limited usefulness on a race course, so I will not spend time discussing them."
