Just Rebuilt 1G AWD Trans, Break-in procedure?

[EclipseOwner95]

Just got done rebuilding my 1g AWD trans for the first time using the Jacks Transmissions "Economy" build with double synchro 2nd.

I'm assuming at the very least I should take it easy for a few hundred miles, but interested in some tranny wisemen's input, Zimmer, Jacks, or anyone else that might have some good insight.

 

[twicks69]

Make sure your clutch is properly functioning and disengaging as well as gently shifting into gears and not launching with wheelhop. Check the fluid color/condition after 500-1000 miles and change it out for a synthetic gear oil.

 

[kchaazz]

Im getting ready to do this myself- basic build, double synchro 2nd, with a 4spider from TRE. I used to run Pennzoil synchromesh, but would like to use something better for my "new" transmission. Twicks, as a guy who builds transmissions for these cars, what oil do you recommend for the first 500- 1000 miles, and what synthetic to use afterward? Ive heard the blue stuff from Redline is nice, but would like to hear what you reccomend.

 

[twicks69]

Break in with Coastal 80w90 gear oil (it is a GL4 even though the label has changed from GL4/5 to GL5) for 500-1000 miles; more if you can, then switch out for a quality gear oil like:

Neo Synthetics 75w90HD (power levels less than ~400whp); or 75w140HD (power levels above ~400whp)
Redline Synthetic MT-90 (power levels less than ~400whp), or 75w140 (Quaife or open front diff) or 75w140NS (clutch type front diff) for power levels above 400whp; lightweight shockproof works well, but it gums up oiling passageways and causes shift key clogging and shifting issues over time; use it only on transmissions that are torn down regularly, and are being used for drag racing only.

 

[EclipseOwner95]

Thank you for the input, stupid question, but what would some of the side effects be of not doing a proper break in ? I put about 200 miles on it and did a few pulls, it shifted great the first few, did one more and it grinded a little going into 3rd. My 3rd gear was pretty beat up but we used it anyways because I planned on doing an Evo 3 3/4 in the near future.

Do you think that small ammount of grinding that occured would jepordize the life of the transmission ? Or just " dont do that anymore " and it should be ok ?

I know its probably impossible to tell on a case by case basis, but I'm looking for a " your an idiot, and you probably just trashed it for good " or " your an idiot, now don't do that again "

 

[VTEC_THIS]

Jon at TRE has a pretty good write-up on transmission break in. There's also a lot of good information under the FAQ link on the site:
http://www.teamrip.com/manual transmission break-in proceedure.html