I have used Laso syncro's on my rebuilds for years..They are a moly coated
German syncro and have almost no issues with them regardless of the oil
used...I have also heard of a reputable shop and rebuilder in SoCal that has
had similar issues..
Redline makes these trannys shift easier when cold typically, But I am
starting to see more and more wear on the gears syncro teeth
themselves...Instead of a nice sharp tooth they are getting rounded off and
that makes it harder for them to engage the slider teeth (also getting more
tired). See it on more and more of the cores I get back. I deal with most
all of the shops here in the Seattle area and very few of them use anything
other than genaric gear oil..If that one came back to me, I would repl the
1st and 2nd gears and the 1/2 slider..
Daryl of AA Transaxle
Duvall, WA. (Seattle area)
425-788-4070
aatransaxle.com
86 Syncro Westy WBXTurbo

----- Original Message -----
From: "Geza Polony" <gezapolony@SBCGLOBAL.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, October 19, 2006 8:26 AM
Subject: Gear crunching on rebuilt trans

>I had my 4 speed trans rebuilt about 9 months ago by an SF Bay Area expert,
> but when they put it back in, it crunched when shfting fast from 1-2 and
> 2-3, especially noticeable climbing hills. A couple of weeks ago I took it
> back and they pulled the trans, changed synchro rings, and put it back in.
> Now the 2-3 crunch is fixed but it still crunches when speed shifting 1-2.
>
> I'm going to bring it back in again. But I want to have some information
> on
> why it would do this. I was under the impression that if you change the
> synchro rings, it stops crunching. But apparently there's a conflict
> between
> moly synchro rings and Redline synth oil, or some such.
>
> Clutch plate, hydraulics, etc. are excellent.
>
> Any transmission people care to comment?
>
> Again, these are reputable rebuilders. I'm not out for a vendetta, just
> trying to understand the problem better to get it fixed. Other than that,
> the shifting is great. What's going on?
>