miata 5sp internals in fc 5sp

Black91n/a · 11-23-2009, 07:33 AM

Quote:

Originally Posted by fc nut

so, a 12a trans internals will work or do you mean just bolt the trans to my engine? i didn't know they were interchangeable. do i need the driveshaft as well?

You need to change the tail shaft housing so that the trans will bolt to the crossmember and so that the shifter is in the same place. You can also change the front section, but I don't think it's required.

fc nut · 11-24-2009, 12:09 AM

which year would be a good strong 12A trans? what about the GSL SE trans?

Black91n/a · 11-24-2009, 06:24 AM

I'd pick the one with the best gearing, but if there's a difference in strength, the later one's are probably slightly preferable.

Whizbang · 12-29-2009, 12:37 PM

Quote:

Originally Posted by fc nut

which year would be a good strong 12A trans? what about the GSL SE trans?

gslse transmission has no real differences as far as strength is concerned.

Just a different fifth gear. (these are for 84-85)

12a 5th: 0.758

13b 5th: 0.807

fc nut · 01-06-2010, 01:20 AM

i want a 5th gear that my car doesn't fall on it's face after i run 4th gear out.

11-24-2009, 12:09 AM	#2
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio Posts: 282 Rep Power: 17	which year would be a good strong 12A trans? what about the GSL SE trans? __________________ leaving my carbon footprint....one start up at a time

01-06-2010, 01:20 AM	#5
fc nut member Join Date: Jun 2008 Location: Lebanon,Ohio Posts: 282 Rep Power: 17	i want a 5th gear that my car doesn't fall on it's face after i run 4th gear out. __________________ leaving my carbon footprint....one start up at a time

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11-24-2009, 06:24 AM	#3
Black91n/a Rotary Fan in Training Join Date: Mar 2009 Posts: 39 Rep Power: 0	I'd pick the one with the best gearing, but if there's a difference in strength, the later one's are probably slightly preferable.