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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through May 12, 2008 » MUFFLER CLAMP BROKE AGAIN « Previous Next »

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Peeping_jon
Posted on Tuesday, May 06, 2008 - 10:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I have gotten good advise here before but never had to post a question. Checked Knowledge Vault. Front muffler clamp broke again this morning on my way to work. this is getting old. Am I doing something wrong installing. This one only lasted a few weeks. I gave tried leaving just snugged down with jack under muffler holding up. Any install tips that works for anyone else PLEASE. Thank You in advance for any help. Jon
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Firebolt32
Posted on Tuesday, May 06, 2008 - 12:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

300mph tape will hold anything.
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Reepicheep
Posted on Tuesday, May 06, 2008 - 12:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

all the bolts and header studs in place and intact? Is that front hanger bolt still there? Isolators OK? Front engine mount intact and all bolts in place? Still jumping busses with Robbie Kneival? ; )

Thats unusual for that front. The manual says not to re-use them, but I have a couple times with no problem. The torque on that thing and the design of the strap is so strong that it actually deforms the muffler... I think a loose strap is more likely to break then a tight one.
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Peeping_jon
Posted on Tuesday, May 06, 2008 - 01:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Check, check, check on bolts mount studs ect. No on the bus jumping, although I have done a few stupid things with my bike. Its just too fun. This clamp was just replaced 2-3 weeks ago for a prevously broken one so its not reused. This reply is not to shoot down reply by reepicheep. I walked right out & checked these parts, started bike and kinda power braked for excessive movement. I really appriate any ideas & help. THANKS Jon
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Azxb9r
Posted on Tuesday, May 06, 2008 - 05:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The torque on the front strap is:
108-120 inch/lbs
back the nut off 2 turns
re-torque to 108-120 inch/lbs


I have had mine off and on 4 times without it breaking(but I do have a spare on hand just in case)
I hope this is of some help.
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Rpm4x4
Posted on Tuesday, May 06, 2008 - 08:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Can you post a pic? Might be easier to tell why it failed.
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Reepicheep
Posted on Wednesday, May 07, 2008 - 06:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

No offense taken!
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Darthane
Posted on Thursday, May 08, 2008 - 08:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Hmm...is the muffler hard up against the front mount before you put that clamp on? If not, even a small amount of space in there could result in some pretty stressful vibrations.
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Peeping_jon
Posted on Thursday, May 08, 2008 - 09:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Held muffler against mounts by slightly jacking bike up with a small sissors jack when installing. I am going to take camara from work tonight if I dont forget again. Really do appriate all imput. I am stumped. Jon
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Trojan
Posted on Thursday, May 08, 2008 - 11:23 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

108-120 inch/lbs

That is probably why the front strap is breaking. Most people overtighten it when refitting, which makes it break.

If you don't have torque wrench you just need to do the strap up until it contacts the exhaust all the way round and then around a quarter turn and no more. As soon as you feel resistance it is probably enough.
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Peeping_jon
Posted on Monday, May 12, 2008 - 03:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I dont have a in lb torque wrench but have installed as per Trojans instructions. The last clamp broke thru spotwelds. Ordered new clamp from dealership & waiting to try again. Jon













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Postban
Posted on Thursday, June 26, 2008 - 07:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Anywhere to get an improved/stronger aftermarket one of these clamps. I got my bike used and it has coat hanger wire wrapped {gag} around where the front strap should be. Looking to remedy that ASAP.
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