dbrown928

I am starting to have some of the usual synchro issues with my early 78 5 speed. Considering that I intend to keep this car for a very long time and am not a purist or concourse competitor I have been reviewing options. The car is not my daily driver, more a weekend cruiser and will not be used for track events.

I have searched previous threads on the issue and am using this info as the basis for my decision. Knowing this forum represents an enormous amount of 928 experience I would appreciate any opinions or suggestions.

My options seem to be one of the following:
Replace the synchros in my current transmission (best quote $1200+)
Find another early 5 speed (likely to have the same issues)
Find an 80 to 85 transmission (requires fabricating battery box hanger)
Upgrade to an S4 5 Speed (requires torque tube replacement as well)

If I have missed any major points or other options please let me know.

Mrmerlin

please indicate the problems your experiencing with your trans.

Also if you click on User CP at the top of the page ,
click on edit signature you can add your car info to every post you make

dbrown928

The transmission is still driveable. The main issue is slight gear grinding on downshifts, primarily second to first gears. The clutch is new and working well. The car only has 98000 miles but spent a little over 12 years sitting in a pine grove in NC.

Shark Attack

I have an 86.5 transmission and TT.. $1900.00. Ill meet you 1/2 way for delivery

Shark Attack

My 79 used to get a lot better after it got really warmed up. I can tell you also Royal Purple gear oil made a huge improvment.

dbrown928

If you'll PM me some contact info we might be able to work something out there.

Landseer

I wish I was in the position to by a 85 or 86 manual box like that one!

Mrmerlin

IIRC you also have to swap out the rear cross member with this trans change .
I think they have different part numbers

SharkSkin

First double-check the clutch. At idle in neutral, push in the clutch and wait two seconds, then try reverse. If it grinds, the clutch is dragging. If it's really working well, you can shift in as little as one second without grinding.

G Man

If it were me I would keep the original trans and install some new syncros and get another 32 years out of the thing.