I have been working on a L28 - Z33 transmission adapter. I wanted to start a thread here to check on the current interest level so I can prioritize some of my projects (Working on L28 intake, LS2 mounting kit, In-Tank EFI pump setup, and this adapter!)
These transmissions are strong, plentiful, and reasonably priced used or available new if you have the funds. The transmissions are close ratio and the shifting feel is awesome. The updated version with the most reobust syncros is a CD009 but they will all bolt up using the same adapter. The initial goal for the setup is to provide a mounting kit that allows for a VQ35DE 6 Speed transmission to bolt directly to the L28 with minimal modification to the transmission (no machining). This is accomplished with an adapter plate, precision flywheel spacer, starter bellhousing, shifter relocator, and various hardware. The resulting kit will be a little more expensive due to the additional parts but the ease of installation I think will be work it. I am confident I can do a 'machined' version similar to the Z32 setup but I wanted to start the first prototypes as the no-machine design and analyze the setup from there. Right now the L28 clutch and flywheel will be used, but I have considered doing a custom flywheel which would eliminate the spacer and allow for a 350z clutch to be used but I think the cost would be prohibitive.
Current Project Status:
- L28 block and Z33 bellhousing mounting patterns and center lines were measured very accurately using a vertical milling center and a CMM.
- Initial CAD is complete
- RP starter adapter printed and test fit with success
- Laser cut blanks for the initial prototype have been procured and are at the machine shop.
- First machined prototype expected to be cut this week!
I hope to have a complete kit ready to test by the end of the year and will then look for somebody who is interested in volunteering to have the transmission installed in their vehicle and then test it out! I have serial projects going on right now but I hope the timeline for this doesn't get bumped too much. The main issue that I foresee right now is the overall transmission length even with my shifter relocator (that is used for VQ35 swaps) I believe the shifter will sit a few inches back, when I get the assembly together I will measure the shifter position and get a good feel for the difference from stock.
I've attached a few pictures and look forward to hearing any thoughts or feedback. FWIW I post the most recent updates for project on my facebook page and then my website as I have time.
Edited by 240hoke, 25 November 2014 - 06:14 PM.