Through the usual channels I was able to pick up a pretty cheap, used, JDM helical differential out of a type-r. What sort of parts am I going to need (if any) to dump the standard open differential, and install this one into my Y80 tranny (GS-R) transmission?

 

Only thing you should really need to do is transfer your ring gear from the stock diff to the LSD, along with your diff bearings, and reassemble your tranny, making sure that the Diff side clearances are fine. I just did this on one of my transmissions, although with a diff made for my car obviously

 

The differences seem minor... although that could end up being a major problem. I sort of crossreferenced which cars come with which transmission, and the 98+ Civic Type-R and 96+ Civic SiR/SiR II share the Y80 with mine. The differential is out of an S80 though which came in the 96+ Civic Vti, 98+ Civic Type-R, 91-01 LS series Integras, 94-00 Integra SiR-G, 96-00 Integra Type-R (JDM) and 97-98, 00-01 Integra Type-R (USDM). However, Comptech sells an OEM ITR differential and a KAAZ, both of which have the same part number for Type-R's and the GS-R's.
Time for the hammer and die grinder, I think. :thumbup: Thanks for the response.

 

Haha, hammer and die grinder?

One thing to look out for also, if the ring gear is bolted to the diff housing, they may be reverse threads, I found that out on mine [not the hard way either ] which just means you have to remember to tighten the bolts to loosen, and loosen them to tighten [which feels VERY unnatural].

 

Well, the swap is going very easily. I'm waiting for new axle seals to come in from california, so I'm sorta stalled, but the differentials are the same size and all, and its a straight swap over. Removing the gears consisted of pulling two studs, loosening three bolts and yanking the shafts. No sweat at all! Doing the torque measurement might be a bit tricky, but I guess there's some little special socket I can get from Honda or manufacture locally. Pretty easily and painless so far if the axle seals hadn't been seeping. I highly recommend it. :thumbup:


Heres the pics