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New muffler causing major backfires! (Read 255 times)

LANCER

Serious Thumper
Alliance Member

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Savage Beast
Performance Parts

Posts: 10661
Oklahoma
Gender: male

Re: New muffler causing major backfires!
Reply #15 - 07/18/08 at 19:37:41

Sandy Koocanusa wrote on 07/18/08 at 15:02:39:

Lancer, regarding the "where you live" portion of your post...

I realize it isn't an exact science, but take a guess at how much change in altitude is needed to start noticing a difference in how the bike runs. 500 feet? 5000 feet? I'm planning a trip this weekend that could take me from altitudes of 1500 feet to 7000 feet. Just wondering what effect this will have on the bike. I'm already running rich and can't seem to cure the problem. I'm afraid if I get way up in the mountains, I may have to pull over and put in a smaller pilot jet. That would be a pain.

The basic rule of thumb for altitude changes is that for every 3-4000' of change there should be a 1 jets size change to compensate. That does not mean that the engine will not run adequately, and some are more forgiving than others, but that is the guide.
If you ARE running rich now then you should consider getting the jetting sorted out before going higher where the thinner air will richen the mix for you even more.

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sidny4 YaBB Newbies Offline Thumping since May 2008 Posts: 35 Fargo, ND Gender:	Re: New muffler causing major backfires! Reply #16 - 07/24/08 at 12:43:42 I have a bit of a leak between the header and muffler, what's the best way to get rid of that? I have a strip from a pop can in there now and that's about all I can fit in there.
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Bobbert Serious Thumper Offline CHOP IT Posts: 836 Los Angeles, CA Gender:	Re: New muffler causing major backfires! Reply #17 - 07/24/08 at 12:50:20 my aluminum can practically melted. my stock muffler had exhaust wrap between the header and muffler.
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Max_Morley

Serious Thumper

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LT650 Luxury Touring
& sidecar rig

Posts: 1490
Moses Lake. WA
Gender: male

Re: New muffler causing major backfires!
Reply #18 - 07/24/08 at 12:59:13

In my experience the answer is to have a muffler shop make you an adapter to connect whatever muffler you have to the Savage head pipe. You can either use the stock sleeve gasket that goes between the muffler and pipe or clamp directly to the head pipe w/o the sleeve gasket using a different size clamp. Take both pieces into a shop and they usually have a cut off pice of 1 -3/4 pipe about 6-7" long laying around they can swedge one end to fit the muffler if needed, shrink the other end to fit the header w/o gasket or swedge it to fit the gasket and put a slight bend in it so the exhaust doesn't blast the rear brake bracket. I've paid both $10 and $20 for them depends on the shop and if the they are cycle friendly. Max

Max at Thumper Acres. '96 Savage bagger, '03 Savage w/Cozy sidecar for wifeni.

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