![]() ![]() ![]() So by my reckoning, theres about a 2.5mm difference between the assemblies, meaning any adapters made for use with the JZ engines (using a 138mm J3 bellhousing) should simply be made 2.5mm thicker than the ones ive got for the UZ? sound right to everyone elseĪctually, given the way the input shaft sits in the spigot bearings using the UZ adapters at present, you could probably get away with a 12mm w58 adapter, and maybe a 35mm r154 adapter. difference in crank position is 13-13.5mm and difference in bellhousing depth is around 15.5-16mm. i assume the longer one is to suit the 2JZ with a bigger torque converter? either way, the one i measured was the longer one: a 'J3' bell and it was about 138-138.5mm deep (compared to UZ A340 bellhousing at 154mm). On top of that there are at least 2 different JZ-A340 bellhousings from what i can see, one slightly longer than the other. I had a look at a 2jz block yesterday, and it looks like the crank face is about 8-8.5mm recessed behind the bellhousing mounting face (compared to the UZ crank face sitting positive about 5mm) Make no compromise on your high performance clutch with this Twin Clutch Kit for Toyota Supra MK4 Turbo (R154) - Competition Clutch available with express. i mean Its obvioulsy not a far throw to get the UZ A340 Gearbox adapters to work on the JZ engines (actually ANY engine using an a340) using their A340 bellhousings, just the depth and subsequent adapter thickness varies. Ive been thinking about how universal the manual gearbox adapters that we've deisgned for the UZ engines are.
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