Bob -
I'm wondering, are your down pipe flex hoses in good shape? If not that
might be causing the unscrewing.
I use brass nuts only, with anti-seize, torqued down about 40 ft lbs. The
trick is to ease them on in succession like when you put on a wheel or a
cylinder head, which will help center and compress the gasket evenly. I
also ALWAYS use brand new brass nuts and gaskets every time I do this. I
also replace the studs if the show signs of corrosion. throw away any old
brass nuts you have.
Doing it this way I've never had a problem... last time I tightened my nuts
on the BJ8 was probably in 1995.
Alan
'52 A90
'53 BN1
'64 BJ8
On Tue, May 12, 2009 at 10:11 PM, Bob Spidell <bspidell@comcast.net> wrote:
> Listers,
>
> I've had an ongoing problem with sealing my BJ8's exhaust manifold to the
> downpipes (the nuts keep loosening and/or the gaskets blow out). I now
> believe the problem is due, at least in part, to my using flatwashers under
> the brass nuts (the holes on the downpipe flanges are too big for the nuts
> alone). What do others use to get a good, secure connection here? Brass
> nuts alone? Brass nuts with lockwashers (my probable next attempt)? Steel
> nuts with or without washers?
>
> Any and all suggestions welcome.
>
> Bob
> --
> *******************************************************************
> Bob Spidell San Jose, CA bspidell@comcast.net
>
> *******************************************************************
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