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How to stop a slip-on
end can blowing
by Arcanum
I recently found I had quite a bit of blow
back (indicated by the red arrow below) from my end-can,
a new Remus I'd fitted a while back, at the point where
it joins to the exhaust proper. So I decided to enlist
the help of this wee tube of handy goop, Firegum. According
to the tube, you simply dump this stuff on and the heat
from the exhaust itself actually serves to seal the
goop.
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So first off, the old double socket wrench
technique to remove the main bolt, separating the can
from the subframe. Don't remove the bolt completely
just yet as it will serve as a second pair of hands
as you remove the pinch bolt. Then to the wee clamp
bolt which pinches the can to the main exhaust. Now
you can withdraw the first bolt you loosened and slip
the end can from the exhaust.
Before going any further it's a good idea
to clean off any surface rust and dust from the tip
of the exhaust with a wee wire brush and then rub it
down with an old rag. The cleaner the surface the better
chance of a good seal.
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![](/workshop/images/blowback2.jpg) |
![](/workshop/images/blowback3.jpg) |
Now, slap on the goop and be sure to apply
it liberally to be assured of a full and complete seal.
The tube recommends gloves, so I was sporting a very
fetching pair of pink rubber dish washing gloves, tasty.
Then push on the can slowly, try not to worry about
the mess you're creating at this point, fasten the main
bolt but not fully, and then the pinch bolt again not
fully. At this point you can attend to that big splat
of goop on your beautifully kept garage floor.
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![](/workshop/images/blowback5.jpg) |
![](/workshop/images/blowback6.jpg) |
Clean off the spillage from around the
adjoining two sections of exhaust. Tighten the main
bolt, to the subframe, fully now. Tighten the pinch
bolt, as you do this a thin ring of goop should emerge
from the adjoining parts, it's a good idea to leave
this small ring of expanded firegum for that final seal.
Bob's ya mother's brother, ya done.
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