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Old 02-11-2004, 02:19 AM   #11
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Great idea though, thanks for links. It would be very hard to implement. With the round heads on the Allen bolts and the lack of room a guy could not even use tabs of any sort.
What if a guy was to fill the recess in the muffler. (Drill out say a piece of aluminum round stock) and have the bolt heads protruding instead of recessed?
This would allow for the wire!
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Old 02-11-2004, 06:30 AM   #12
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-then you would have to find extra long bolts too.

On one of my engines, instead of bolts I used a threaded stud - then I drilled and wire tied it at the ccase. Slipped the muffler over the studs and then used a washer, lock washer, and double nut to keep it on, and I will drill and wire tie it JUST to be safe.
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Old 02-11-2004, 06:32 AM   #13
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I think that would work !

Wouldn't it be great if our hardware came pre-drilled on engines.This would solve a lot of problems.
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Old 02-11-2004, 11:29 AM   #14
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Using long bolts to bring the heads out is good, even more so if you use a tube to put the bolt though. When you tighten a long bolt, you stretch it a bit (like a spring), so it keeps the clamping force even if the gasket (or whatever) shrinks a bit. With short bolts, the stretch is so slight, that any movement/shrinkage/expansion in the joint leaves the bolt loose, where it rattles loose right away.
I've used this method in industry a few times, on difficult applications.
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Old 02-15-2004, 12:40 PM   #15
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For my Brison 3.2 and Bisson wrap around muffler I used longer bolts. I put tubing as inserts with JR weld into the recess holes on the Bisson muffler to bush out the holes, another buddy machined inserts for his Bisson muffler.

I drilled a hole through the bolt head and lock wired the bolts, used this method on a Brison 2.4 and Bisson muffler all last year with no loose bolts. I also use locktite 262 on all the mullfer bolts.

I have lockwired my muffler bolts and used locktite 262 on other gas engines for the past 5 years with no bolts coming loose (touch wood)

you can barely see the lockwire in the photo

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Old 02-16-2004, 07:19 PM   #16
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Go to automotive parts store with a 3/16 muffler Allen bolt and go through the brakelines till you find one it fits into. Cut it up for spacers. The chinsy tin tubes they use in the Quadra mufflers wont crush when you use these. I drill a 1/16 cross hole in the head of the allen capscrew and use Mig welding wire to tie them together. they won't come loose.
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