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jim-in-so-ore

muffler.

6 posts in this topic

A couple of weeks ago I found a thread on putting a KTM muffler on a WR. There were even pictures... I am not even sure if it was ThumperTalk. Of coarse this is the ONLY sight on the web....Right?

Any help would be appreciated. Thanx in advance.

Jim

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Brian, I must be stupid but I did the search on both NVR FNSH & KTM muffler and all I got was 0 matched topics.. Now what?

Jim

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The following was found on DNR, May be what your looking for. Hope it helps. Ward

"check out http://www.peterrenner.net/exc

be patient while downloading and please ignore the mess seen in the background

(btw. i was too busy lately to cut off the

remaining unused EXC tab and to finish up

the load bearing one)

I had an 520 EXC muffler welded onto an Arrows pipe.

The pipe fits more or less nicely onto the stock header.

At first i tried to use a spring like attachment like KTM, but this proved too loose, as the WR offeres only one point to support the muffler, whereas the KTM has two.

Effect:

up to mid rpms very stealth, no problems pull ing up to the traffic light near the cops at 2 AM. Beyond mid rpms the sound turns more into an XR600-w/out-baffle style, only less noisy.

Biggest plus:

Better throttle response down low.

Biggest drawback:

Muffler need repacking

cost (incl. 20% Austrian sales tax!):

$240 EXC muffler

$100 Arrows stainless steel mid section

$50 welding

not counting the DIY sawing and rivetting"

------------------

Alaskan rider, '00 WR400FM, WR timing, air box lid removed,Throttle stop trimmed,Baffle removed, MSR skid plate , Works frame guards.

----------------------

'00 Grizzly YFM600

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Jim,

The post was on 4/10 (or there abouts) in the Thumper Central Forum. I was going to post the link last night & my computer locked up. The webpage Ward posted is it.

Brian

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Thanx guys, That was the thread I was looking for. My KTM muffler should be here tomorrow or Saturday, then it's cut and weld and make it fit. Wish me luck.

Jim

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