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by **bgilbert** » Sun Dec 14, 2008 4:58 pm

Matt and I just went through another getrag, a 'customers'

tranny. Within the Zbag.com bearing kit there was a new addition, instead of only Koyo bearings, there were NSK bearings, along with a single Koyo bearing. Both made in Japan though. Maybe just a new name on the same bearing?

Plus we found made in Germany bearings in the tranny. I was thinking Koyo was the only bearing available or made.

The rebuild went well and back together pretty easily. It was a 300k mile getrag with at least one 'rebuild'. It had one of two blocker rings replaced, and a couple of the synchro rings were replaced at one time as well. The hard parts looked excellent but the synchro rings were SHOT.

by **Ace** » Sun Dec 14, 2008 5:38 pm

I think the syncros always seem to wear faster is people running motor oil in them. I know that was the OEM spec'd fluid at the time, but that was also before good syncromesh fluids were widely available.

by **dpuckett** » Sun Dec 14, 2008 6:05 pm

The 2 trannies I did this spring were the NSK bearings, from ZBAG as well. Seems to have held up so far, though mine only has about 6K on it.

Daniel

by **oldcool90** » Sun Dec 14, 2008 6:40 pm

Ace wrote:I think the syncros always seem to wear faster is people running motor oil in them. I know that was the OEM spec'd fluid at the time, but that was also before good syncromesh fluids were widely available.

This tranny had gear lube 80/90 run in it most of it's life.

by **Ace** » Mon Dec 15, 2008 8:24 am

Gear lube would be even worse for the synchros than motor oil, not to mention starving the bearings.

by **Renigade** » Fri Dec 19, 2008 6:29 am

I am fixing to service my Getrag tranny what type of oil do you recommend for it.

by **bgilbert** » Fri Dec 19, 2008 12:15 pm

Renigade wrote:I am fixing to service my Getrag tranny what type of oil do you recommend for it.

Right after rebuild, I suggest using an inexpensive 5w30 or 10w30 engine oil for breakin. Drain that after 200-500 miles and replace with 5w30 synthetic engine oil.

by **Ace** » Fri Dec 19, 2008 12:20 pm

If you want the syncros to last, use a synchromesh fluid.

by **GLHS** » Fri Dec 19, 2008 2:43 pm

What Ace said or some Redline MTL.
Shifts smoother, faster and is quieter than 5w30, 10w30 and 10w40 synthetics that I have used.

by **dpuckett** » Sat Dec 20, 2008 10:33 am

bgilbert wrote:Right after rebuild, I suggest using an inexpensive 5w30 or 10w30 engine oil for breakin......

so, 5000mi is a little too long for break-in? :lol:

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