KA24DE 6 Speed VQ
Posted: Mon Jul 24, 2017 12:25 pm
I came across two CD009 transmissions for stupid cheap, wasn't even intending to go 6 speed just needed a trans that wasn't about to explode. For those that don't know CD009 comes in 2007 and up 350Z, 370Z, G35, G37. It's supposed to be bullet proof and size comparison it's bigger then T56.
First I've started looking into adapter plates to bolt CD009 to KA24, but after doing some research and measuring for myself I've came to conclusion that input shaft splines will not be fully engaged into the clutch disk. Don't remember exactly but even after milling 10mm off the bellhousing you will be only engaged 10mm into 25mm clutch disk. I've done these measurements long time ago and lost the paper work, either way it will not work. This is mostly caused by VQ using dual mass flywheels, which are super thick and space clutch back further into the bell housing. One solution that might work is to buy an adapter plate with JWT flywheel (which is just a 350Z lightweight flywheel drilled for KA24 6 bolt crank, instead of 8 bolt). I didn't try this so don't quote me.
Either way being a cheap ass that I am, I've tried a next thing that came to my mind. Cut 350Z bell housing and KA24 and weld them together, while eliminating extra thickness for dual mass flywheel. Again don't remember exact measurement. This didn't work because housings aren't really close to each other in shape. VQ bell housing is just too big. After this failure I've just ordered JWT adapter plate, Flywheel, and got myself Auto KA24DE bell housing. Cut CD009 bell housing clean off. Bolted on JWT adapter plate Had to make my own clutch line because sending stock 350z clutch line through bellhousing won't work. Because I've tried, notice holes in bellhousing. Flywheel comparison.
RB25 flywheel VS JWT flywheel. Previously had RB25 flywheel and 350Z clutch Transmission on with mount made from some square bar and shortened shifter bracket. Clutch bled and works fine.
Car isn't finished yet, had to get side lined in order to finish a build for someone. As soon as I'm finished I will jump back on it.
First I've started looking into adapter plates to bolt CD009 to KA24, but after doing some research and measuring for myself I've came to conclusion that input shaft splines will not be fully engaged into the clutch disk. Don't remember exactly but even after milling 10mm off the bellhousing you will be only engaged 10mm into 25mm clutch disk. I've done these measurements long time ago and lost the paper work, either way it will not work. This is mostly caused by VQ using dual mass flywheels, which are super thick and space clutch back further into the bell housing. One solution that might work is to buy an adapter plate with JWT flywheel (which is just a 350Z lightweight flywheel drilled for KA24 6 bolt crank, instead of 8 bolt). I didn't try this so don't quote me.
Either way being a cheap ass that I am, I've tried a next thing that came to my mind. Cut 350Z bell housing and KA24 and weld them together, while eliminating extra thickness for dual mass flywheel. Again don't remember exact measurement. This didn't work because housings aren't really close to each other in shape. VQ bell housing is just too big. After this failure I've just ordered JWT adapter plate, Flywheel, and got myself Auto KA24DE bell housing. Cut CD009 bell housing clean off. Bolted on JWT adapter plate Had to make my own clutch line because sending stock 350z clutch line through bellhousing won't work. Because I've tried, notice holes in bellhousing. Flywheel comparison.
RB25 flywheel VS JWT flywheel. Previously had RB25 flywheel and 350Z clutch Transmission on with mount made from some square bar and shortened shifter bracket. Clutch bled and works fine.
Car isn't finished yet, had to get side lined in order to finish a build for someone. As soon as I'm finished I will jump back on it.