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R380 Rebuilding

Posted: Wed Apr 27, 2016 11:47 am
by DrRangelove
The R380 on my 95 D1 is a little bit rough... When I first got the vehicle shifts from 1-2 and 2-3 were very clunky and notchy with an audible metal on metal "clink" when finding the gears. Also a little bit of crunching going into second gear which goes away with slowing down gear changes and double clutching.

I just did a fluid drain and refill with Redline MTL which has made a massive difference - gear changes are a lot smoother and seem to be getting better as the fluid works its way in there but it's still a bit notchy and clinky when engaging 2nd and 3rd gears. 4th and 5th are fine, and downshifts seem not too bad but I do get a vibration in the wheel when downshifting into 2nd (engine braking).

I should mention that when I drained the fluid, the magnet on the plug had about 1/2" of fine metal shavings on it - no chunks of synchro or teeth but it was definitely a bit of an "oh shit" moment when I saw that!

Anyway, it's certainly drivable, and I suspect I will be fine for some time if I'm deliberate and slow with my gear changes, but I do thing a rebuild is in my future. Has anyone on here had any success with rebuilding an R380? Anyone know any shops that can do this for a reasonable price, or know of a good reconditioned box for sale?

A frame bushes have been mentioned to me as a possible culprit, but by the feel/sound of it, I'm pretty sure the noises are coming form inside the box. Any other recommendations for trouble shooting?

Cheers,
Dave

Re: R380 Rebuilding

Posted: Wed Apr 27, 2016 10:53 pm
by BlkP38
Dave,
Ashcroft do rebuild kits, or reconditioned.
Working on gearboxes is relaxing and satisfying, on a bench in your workshop (or kitchen table)
You can get by without the special tools but the workshop manual is a must.
As its likely to be down for a while, especially if you need additional parts, best to look for a spare.
If you get in a crunch (sorry about the pun) I have a spare that I could lend you.
Eric.

Re: R380 Rebuilding

Posted: Thu Apr 28, 2016 9:51 am
by DrRangelove
Kitchen table?!?! Sue must be very understanding!

Thanks for the suggestions - I'll look into Ashcroft...