Mazda Tranny Gurus

PapioGXL · Post by **PapioGXL** » Mon Oct 05, 2009 10:09 pm

I need some help. I'm trying to mate an engine up to the turbo Mazda RX-7 tranny, but because of the bellhousing, the input shaft splines barely engage with the clutch disk.

I saw on the main site a brief mention of the B2600 transmission having a slightly longer input shaft, which, if true, would be ideal for what I need. I basically need about 3/4 of an inch longer of splines on the input shaft.

Can anybody confirm this for me? If so, anybody have an input shaft to ship me?

Gentleman Rogue · Post by **Gentleman Rogue** » Tue Oct 06, 2009 6:51 pm

why not make a spacer for the flywheel? id assume the RX7 trans is much better than the truck trans....

PapioGXL · Post by **PapioGXL** » Tue Oct 06, 2009 10:16 pm

That seems like it would be more difficult than just swapping input shafts. The engine I'm planning on swapping in (VW VR6 12V) has a 10 bolt flywheel that is hub centric, and 1 bolt is slightly offset to locate the fly correctly. I'm also having trouble finding a machine shop willing to work with me on this.

JDOliver · Post by **JDOliver** » Thu Oct 08, 2009 12:53 pm

Interesting swap. What is it going in?

How about machining down both ends of your bellhousing a little?

PapioGXL · Post by **PapioGXL** » Thu Oct 08, 2009 10:30 pm

The problem with machining down the flywheel is that it would throw the geometry of the clutch fork off, as well as cause the starter to jam.

Its going in an FC RX-7.