Z32/Z33 trans, I found this good write up on adapting it to SR. Maybe even help with Vin's Q45 project :D

Also mentions use of Q45 rear end for the longer final gear.

http://forums2.freshalloy.com/showpost.php?p=1434016&postcount=9


"Bellhousing needed to be shaved 1/2" to make way for the transmission adapter. Bottom portion was omitted because we won't be using the two bottom bolts.

Trannies and drivetrain components shouldn't be rated by horsepower but rather torque capacity. I currently don't know what the Z33's gearbox is good for, but after opening it up and comparing it to the Z32's gearbox, it's not a huge difference. It's a significant upgrade from the SR gearbox, that's for sure.

Test fitment will start as soon as I have the engine bay painted. Right now it's bare metal. A quick mockup indicated it won't interfere with the firewall / trans tunnel, but a more thorough test fitting will be performed.

Transmission crossmember and mount will definitely be a custom piece. All I'm going to do is use a block of 50 durometer urethane and some plate steel and fab the mount myself.

Driveshaft will most definitely need to be custom made. Length will be different, spline count of the output shaft may be different, and I'm wanting to keep the slightly larger bolt pattern of the Q45 input flange.

Q45 R200V uses a bigger pinion for the output flange. I haven't researched what flanges are compatible. All I know is drivers side 300ZX TT axle on the drivers side, early model drivers side Q45 axle on the passenger side, and either Q45 or 300ZX TT rear hubs. The conversion will have the benefit of slightly larger axles.

Shifter will need to be shortened at the shift rod's universal joint. Some say a VQ40 manual transmission shift lever support bracket will work, but I'm just going to cut mine and weld it back together. With the lever fork right at the u-joint, close to factory shift lever position will be retained.


For a single plate clutch, I've done some measurements and what will work is SR flywheel + SR clutch + SR TOB sleeve + SR TOB + VQ slave cylinder. My ORC twinplate has the same pressure plate contact depth. I could theoretically use the stock TOB, but I got an ORC TOB who's entire body spins"


A little bid down I read this:

"I did some more research on this. The 350Z, 05+ V6 Frontier, and the 05+ Nissan Xterra all use the FS6R31A manual transmission gearbox, and the gear widths are identical per the official Nissan FSMs.
On a side note, it appears that the 05 Frontier 4-cyl equipped with the QR uses the FS5R30A 5-speed manual. For those that know, this is the same gearbox that's in the Z32 300ZX.

So essentially:

05+ Frontier 4-cylinder uses FS5R30A Z32 gearbox
05+ Frontier 6-cylinder uses FS6R31A Z33 gearbox


I'm now led to assume that the Z33 gearbox is equal to or greater than the Z32 gearbox in terms of strength."