Ozmodiar-X

i have a chance to get a second gen 13b engine, not sure of the exact year or milage, but it is suposidly in good condtion. Its 400$ but it does not come with a tranny, so im just wondering if the tranny from a 12a would match up to it?

BlastinSideways12A

If its a non-turbo the tranny will work fine. Just need notch the front crossmember from the 12A and use the 12A front cover. You will also need an oil pan from a GSL-SE.

Ozmodiar-X

i would think it wouldnt matter if it was a turbo. also why will i need an oil pan from a gsl-se?

85rotarypower

You need the oil pan because the 2nd gen pan doesn't clear the steering rod on a 1st gen, and obviously the 12A pan won't fit. As for the tranny, the reason BlastinSideways says as long as the engine isn't a turbo is because a TII engine will turn an FB tranny into a very big paperweight in no time flat. Chances are you would blow it up the first time you tried to launch.

steve84GS TII

Youll need the GSL-SE front cover to keep the 4 tube FC oil metering pump.FC engine have 4 oil injection nozzles.
Then youll need the GSL-SE oilpan to mate to the front cover and to clear the 1st gen's X-member.

You are now mounted up....12A tranny will work fine so long as its in healthy condition.Non turbo 2nd gen trannies are basically the same unit.

86-88 EFI isnt too complicated,its very similar to the GSL-SE injection and there are few surprises when converting it into the 1st gen chassis.

If its an 89-92 13B,then youve got other issues to deal with,if you wanna retain the factory 2nd gen EFI,the electric oil metering pump being the primary hurdle.....

3rd and final 7

iTrader: (9)

your going to need this too it will make things easier it will help you bolt the 13B right to your chassy with less headaches

http://www.mazdatrix.com/mounts.htm

part # 11832 at the bottom of the page

85rotarypower

Screw the 2nd gen EFI system. IMO, the system mazda used on these cars is ****. Its too problem prone to really work with it. Your better off using a standalone system or converting the engine to carb, which is easier than getting the damn EFI to work properly in an FB. There are only 4 wires from the FC ECU that you have to hook up, but you have to know what they do to get things to work right.

When I first put the S4 6 port in my 82, it was still EFI. It took me 2 months to get the wiring right because there aren't any good resources online for the conversion, then when I finally got the engine running, there were problems with it. It ran so bad that I actually thought the engine had bad compression on the rear rotor. It wouldn't idle below 1200rpm and it would cycle slowly between 1500 and 2500rpm. I asked many people about the problem, but no one could figure out the problem. I probably would have replaced every sensor and FI piece on that car before I found the problem. I just said screw it and went carb.

Lee Lyons

do a 12a rebuild with a streetport...FI...and a massive turbo...or you could buy my JDM 12at with streetport...single turbo with 50mm compression wheel and wastegate...plus a **** load of other goodies...