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Index > @ the Pickup Bed (General Topics) > Thread: Swapped my tranny today
Thread: Swapped my tranny today
Jeff20B


Moderator
Posts: 661
posted July 22, 2003 12:42 AM

Swapped my tranny today

From a smoothcase '79-'80 SA22C (1st gen RX-7) 5 speed to a '76 Cosmo ribcase 5 speed. I'll put some tranny oil in it tomorrow and take it for a test drive. More details tomorrow.
____________
'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7

       
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Klaus43


Rotorhead
Posts: 1259
posted July 22, 2003 05:48 PM

Bummer...

...that you didn't fill 'er up before the install! That AmSoil's some stinky good stuff...

       
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Jeff20B


Moderator
Posts: 661
posted July 22, 2003 11:54 PM
Edited By: Jeff20B on 22 Jul 2003 23:55

Huh? I'd never fill a tranny before installing it (ribcase or SA style). The shifter housing comes off with four bolts and viola.

It was already off anyway, so it worked out fine. Besides, my 4 speed straight REPU shifter fits on a 5 speed tranny with a spacer plate I made a few years ago. I tried to use a curved Cosmo shifter, but it hits the seat in 2nd, 4th and Reverse. I dumped 2.5 quarts through the shifter hole. :)

This tranny got a workout when my friend and I towed a baja today. It had only been in the truck for less than 24 hours.

I don't think the heavy duty use did anything significant to this tranny, but it makes whining noises, and there's a funny vibration at certain RPMs that wasn't there before. Oh well, I was planning on towing stuff anyway, so this was a great test. It passed with flying colors.

I'll add some redline after this cheap stuff has had a chance to work itself through all the gears. This tranny was bone dry and had very crunchy gears during the first test run. Then tonight after the towing was finished, it seems to shift better. Not sure if it got louder though. It's possible I guess, due to all the usage it recieved today. I'll keep my ears peeled.
____________
'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7

       
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Klaus43


Rotorhead
Posts: 1259
posted July 23, 2003 07:26 AM

Don't delay!

Save that tranny...do the oil change NOW! Whether AmSoil or Redline... it will continue to improve. Vibration and whining...not so great. Input shaft bearing? Typically weak/ worn synchros?

       
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Jeff20B


Moderator
Posts: 661
posted July 23, 2003 10:06 AM

Ok, I'll get some Redline or Amsoil as soon as possible.

It dawned on me this morning that the vibration could be from my driveshaft. It only happens at a certain speed or RPM in like 2nd gear I believe. I'll know more when I drive it more.
____________
'74 REPU
'76 Cosmo
'77 MG Midget 13B
'81 RX-7

       
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