Differential Rebuild

[James A]

We had a front seal on the race car differential start leaking, it is a Ford Sierra differential with an AP Suretrac lsd. It was not easy finding anyone to work on the differential, a lot of people knew nothing about the Sierra diff and no one knew what an AP Suretrac was. People who did understand the Sierra diff said they were a pain in the behind to work on and did not want the work.

Just wanted to let everyone know of a good source for Sierra rebuilds, Taylor Race Preparation in the Dallas area. Dan knows these diffs and rebuilt mine with new bearings and seals. The AP lsd is no longer supported by AP or Fuji Heavy Industries (who bought the rights to the Suretrac) so if you have one enjoy it until it fails and have a Quaife installed.

I am having Dan build up a spare diff with a Quaife lsd as a spare in case the AP lsd starts to die.

Oh, Dan has rebuilt the T9 gearbox for several of the Caterham racers including me.

Just a reference for you, I'm not in any way associated with Taylor, but he sure has supported our race efforts.

[Kitcat]

James: Why not use the 6sp Caterham tranny in lieu of 5sp, regardless of rear diff? It adds 2 more (usable) gears, ie.6th is the 1:1 ratio, on the T9 4th is that, and 5th is overdrive.

[James A]

The 6 speed is not allowed in SCCA E Production, we must run the Ford T9 with standard gear ratios. The SCCa is so afraid of Caterhams that we are the most restricted cars in EP. Just look at the General Competition Rules, it's crazy how much we are constrained.