About 5 years ago I bought a JDM B18C OBD I w/LSD swap from a reputable importer. Now I have a built motor and was going to use the tranny from that swap, but I wanted to put a Quaife LSD and take the stock one out. The stock one works fine, but I had heard they don't like higher horsepower and tend to give out. I thought that the diff would have (10) 14mm head bolts that are reverse fine thread holding it on, but this one has (14) 10mm normal coarse thread bolts. Obviously this gear will not work with my Quaife QDF6U that is supposed to be for GSR hydro trannys. So what do I do now? Do I need to buy the final drive gear from MFactory or what to get the Quaife to work? If I do need to get another gear what are the suggestions for a turbo setup making 500+hp for drag use.
I also posted this as a thread in the Integra section, but I thought I may get better advice on the gear size here. Thanks in advance for the help.

 

You just need a gsr ring gear to put on your gsr quife lsd. Aftermarket or oem is up to you.

 

You need a USDM GSR or ITR FD (ring gear and countershaft, keep them matched). If you go with an MFactory FD, I would go with the PRO 4.267 or 4.05 depending on the rest of your setup.

 

Thanks for the help I'm going to stick with factory ratio for now and get the OEM 66 tooth ring gear that bolts on with (10) 14mm head reverse thread bolts, and bolt that up to my Quaife. I plan on just running this setup for a year or so, with that in mind would you suggest changing the diff bearings or just re-using them. They probably wont see anymore than 2,000 to 5,000 more miles.

 

new its already apart dont skimp out

 

If you're just getting the ring gear and not the countershaft, order a new one from Acura.

New bearings.

 

Would you guys happen to know the part #'s on the bearings for the diff? (cone style for GSR) and the part # for the(10) reverse thread 14mm head bolts. Thanks for the info

 

Get full sealed bearings, so much better than thosE cone style kind