muffler keeps coming loose
01-11-2013, 10:17 AM
#26
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RE: muffler keeps coming loose
ORIGINAL: djstar39
The Troybuilt link above says All Pitts mufflers (except Jtec)... I have a Jtec Pitts muffler for my DLE-20 that I'm getting ready to install. Do I need to strap it?
Dave
The Troybuilt link above says All Pitts mufflers (except Jtec)... I have a Jtec Pitts muffler for my DLE-20 that I'm getting ready to install. Do I need to strap it?
Dave
On the TF Giant P-40 Build Thread, most are using the same Engine and Jtec Wrap Around Muffler, and I only know of one person who had a problem with his Jtec Pitts Muffler falling apart from cracks; so here lies the delema, 'do I" or 'do I not' bother with a Support Strap; my thought is better safe than sorry, put the Support strap on now before I put the Cowl back on and after I ran the engine and tightened the bolts up while they were still warm.
That one guy that had a problem, had said that he tried to correct the loose muffler problem several different ways, and it's highly possible the Cracking only occurred after the muffler got loose on the several occasions it had got loose. I have talked to Jtec, who do not recommend a support Strap and they are confident that if you read the mounting instructions provided with their mufflers that you shouldn't expect any problems.
So again, my thought is if you put on a support Strap and put it on properely, what's it going to hurt other than void your warranty with Jtec.
01-11-2013, 03:52 PM
#27
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RE: muffler keeps coming loose
ORIGINAL: kmeyers
I use High temp RTV as a threadlocker on my muffler bolts.
Is there a strap on the far backside of the muffler that supports to one of the engine mount lugs and prevents vibration?
If not, you need to fabricate one and that will stop your problem.
I use High temp RTV as a threadlocker on my muffler bolts.
Is there a strap on the far backside of the muffler that supports to one of the engine mount lugs and prevents vibration?
If not, you need to fabricate one and that will stop your problem.
anything is better than nothing though.
I suspect the OP nice little angle piece will serve him very well.
01-12-2013, 05:26 AM
#28
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RE: muffler keeps coming loose
longer bolts and a washers that are larger than the bolt holes will alow you to drill the heads and safety wire on the muffler with the bolts recessed in , i use high temp coper rtv with no gasket cause over time the gasket gets crushed and then theres play- vibriation, works for me
01-25-2013, 04:11 PM
#29
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RE: muffler keeps coming loose
Here is my Support Strap that I welded on the End Plate of the Muffler and is then Bolted Between the Engine Mounting Bolt and Lug.
