Seems to be an epidemic (or is it pandemic?) ;)
Norman Nock suggests flat-filing the flanges on the downpipes; I think maybe
the
newer ones might be warped out of the gate (I've done this, didn't help me
much). The newer gaskets don't seem too sturdy, either. I think the next time
I have the downpipes out I might try to weld a small 'cuff' that extends the
pipe into the manifold a bit.
BTW, I found I could check/tighten the nuts using a 1/2-inch deep socket on the
end of two extensions--one 3-inch and one 12-inch--and a 3/8-inch ratchet. It
helps if at least one of the extensions is the 'wobbly' kind; e.g.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=31203
Then, you can reach the nuts by laying on your back just behind the left front
wheel and working the extensions and socket up to the exhaust flange nuts. At
least you don't have to get out the floor jack and jackstands. On a recent
road
trip I ended up doing this almost daily.
Bob
Mark Schneider wrote:
> All,
>
> I hope someone on the list has the solution to Bob's question regarding
> securing and sealing the the downpipes to exhaust manifold connection.
> Its is odd that I never had a problem until the last time I installed a
> new pair of mufflers and downpipes on my BJ8. I am using brass nuts and
> lock washers on the studs. About once every six months I have to put
> the car up on jack stands and tighten the nuts. I have dropped the
> downpipes and replace the gaskets but to no avail. The things still
> loosen with time. I just listen for the psst, psst,psst and then get
> out the jack stands and ratchet wrench.
>
> Marks 3
>
--
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Bob Spidell San Jose, CA bspidell@comcast.net
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