debating building 76' 13b rather than selling, need some help
Hunting Skylines
Joined: Apr 2001
Posts: 3,431
Likes: 4
From: Brisbane, Queensland, Australia.
Originally Posted by BlastinSideways12A
Mazdatrix has all the rotor weight and compression numbers. Its not a good idea to mix pre-85 rotors with 86+ housings or vice versa. The shape of the housings are ever so slightly different. Don't worry as much about compression. IF you ever were to tear the engine down which I wouldn't do unless something unfortunate were to happen to it, I would use GSL-SE rotors since they are 9.4:1 and streetport the engine but for now I would just do all bolt-ons. You'd be VERY pleased with the results that you'd get just from bolt-ons to an older model rotary.
Use the engine as is, get Racing Beat Street Port exhaust, DLIDFIS ignition, Lightweight flywheel, and a Weber DCOE 48 carb. I have this setup on my 85 GSL (83 12A engine) except for the flywheel and I love it. A 13B should give you that little extra torque but still be very similar to my 12A setup. Don't tear apart that engine, especially since nothing is wrong with it.
Use the engine as is, get Racing Beat Street Port exhaust, DLIDFIS ignition, Lightweight flywheel, and a Weber DCOE 48 carb. I have this setup on my 85 GSL (83 12A engine) except for the flywheel and I love it. A 13B should give you that little extra torque but still be very similar to my 12A setup. Don't tear apart that engine, especially since nothing is wrong with it.
Also, if there is any difference it would be in the housings and the e-shaft. The rotors have the exact same dimensions as far as I can tell.
Last edited by REVHED; Jul 31, 2005 at 05:21 PM.
Hunting Skylines
Joined: Apr 2001
Posts: 3,431
Likes: 4
From: Brisbane, Queensland, Australia.
Originally Posted by aws140
revhed, you say you have already done it. what housing and rotors does your engine consist of?
