ditchlewis
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| posted on 29/4/07 at 08:41 PM |
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Exhaust mounting.....
I was runnung the car up today and the exhaust came loose 
the rear mounting and its rivnut had come out of the chassis rail and was just hanging.
I had put a rivnut into the bottom of the lower chassis rail and I was using an "L" shaped bracket.
On the long leg of the "L" i was using a rubber bobbin to fix the exhaust.
there appears to be a couple of problems with this. one is the turning moment pulling the bracket down and pulling the rivnut out of the chassis, the
other is the vibration has possibly enlarged the hole so the nut has just fallen out.
what have others done to fix their exhausts?
David Jenkins uses a bobin through the side panel. but he has alloy panels and i have fibreglass.
i have only used one bolt underneath, should i put a second through the floor?
your help is needed
Ditch
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givemethebighammer
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| posted on 29/4/07 at 08:54 PM |
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I welded up two T shaped brackets. Put a rivnut into the bottom and side of the chassis tube and then mounted the exhaust on 'mini' exhaust
type bobbins. Nothing has falled off yet !
See diagram
excuse the diagram spelling of rivnuts, I was having an 'Allo Allo' moment
[Edited on 29/4/07 by givemethebighammer]
 
Rescued attachment exhaust mount.jpg
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omega0684
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| posted on 29/4/07 at 09:06 PM |
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personally i wouldn't use rivnuts to support a silencer, they are just not up to the job, most silencers and between 3-7kg's so you are
gonna have to use something that is tough enough to do the job,
i have use a 4mm L-shaped bracket mounted to a coton real shock which is mounted to a 4mm bar of steal, which is bolted to the chassis with 2 x m10
bolts.( mind you my silencer weighs like 7kg)
just my 2p's worth, but it may spur some imaginative thinking
I love Pinto's, even if i did get mine from P&O!
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ayoungman
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| posted on 29/4/07 at 09:50 PM |
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I drilled through the grp side and made a mounting plate attached to the chassis side box sections. Bobbins screw into welded nuts on this. Neat and
strong !
 
Rescued attachment exhaust bobbin.JPG
"just like that !"
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zetec7
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| posted on 29/4/07 at 11:17 PM |
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I was thinking of welding a couple of tabs onto the underside of my chassis raill, and having them come out underneath the silencer at both ends to
support it, with rubber doughnuts to absorb the vibration & tuning moments...does this sound good?
http://www.freewebs.com/zetec7/
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David Jenkins
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| posted on 30/4/07 at 07:19 AM |
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quote:
Originally posted by ditchlewis
David Jenkins uses a bobin through the side panel. but he has alloy panels and i have fibreglass.
Not quite that simple! There's a bit of steel inside that's welded to the chassis - the bobbin goes through that, with a bolt to hold
it.
And don't worry - once you get these recurring niggles out of the way the car'll be fine. At least it starts and runs now!
cheers,
David
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ditchlewis
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| posted on 30/4/07 at 07:43 AM |
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Looks like the drivers seat is comming out then.
i have panelled the inside of the car in alloy sheet so i cannot weld a bracket on to the frame.
i also have a neoprine mini exhaust mount shaped like a T this requires 2 bolts to fix and i will have to drill right through the chassis from the
outside to the inside.
since i have a layer of alloy and then fibreglass over the chassis rail, so i cannot weald up the origina mounting hole, what is the best way to fill
it?
By the way David, Jake was most impressed with your car and said it awsome..
Ditch
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