Date: Mon, 14 Jun 2010 18:37:02 -0700
Reply-To: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM>
Subject: Re: noise SOLVED. Now need to Heli-Coil?
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so great that you found it.
you can get away with only 3 of those 4 bolts going into the frame, if you
just want to be running quietly again and don't want to make a project out
of it.
ideally only one threaded hole is stripped and the other 3 are ok.
If I wanted to 'cheat' and stick the other 3 good ones in and leave things
as be for now.
I'd remove them one at a time..
and put them back in with thread joint teflon tape on the threads.
that would help prevent corrosion on the threads of the 3 good ones.
that's just my 'cheater' suggestion to make it better without fixing it
right really.
I don't use threaded inserts much unless I have to.
depends on how much metal is there.
this would be nice ...
real nice....if on the bad one the bolt broke off in place...
then you could just dril and tap in place, and that threaded hole would be
fine again.
If it's fully stripped out oversize ...then sure ...an insert type repair. I
think of using those more in things like cylinder heads than frame steel
though.
I would hate to do this, but one could cut a small hole through the side of
the frame there, and rig a nut with a tap welded on it, what I call a 'jam
tap' to it would lock against something and not turn while you tighten teh
bolt from below.
Vans do run fine with only 3 good bolts holding that front trans mount to
the frame.
how to treat the inside of the frame for rust though ..that's a trick.
----- Original Message -----
From: "pickle vanagon" <greenvanagon@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, June 14, 2010 5:46 PM
Subject: noise SOLVED. Now need to Heli-Coil?
> Robert Fisher was right.
>
> Two of the transmission mount bolts weren't properly tightened.
>
> They weren't really loose, which is why when I was checking over
> everything
> (I stared at that transmission mount at least 6 different times) but I
> guess
> there was a little bit of wiggle room for the mount to pivot diagonally
> across the two looser screws. I think when I went to tighten them, I
> mistook resistance related to rust and the weight of the transmission as
> the
> bolt cap tightening down all the way.
>
> But now I have a problem. One of the bolts, it seems, was made too tight.
> Or maybe the threads were already trashed.
>
> So now my noise is gone but one of the four tranny mount bolt holes has
> stripped out threads. Is a heli-coil the answer here? I've never had to
> deal with this kind of situation before. Any help would be greatly(!!!)
> appreciated. I guess I have to tap threads, and then insert the
> heli-coil?
>
> So, thanks to *everybody* that listened to my noise and gave me their
> feedback. It could have been any of the things people suggested, and the
> encouragement to check over everything was exactly what I needed.
>
> Thanks again!!