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Message started by Fiskbil on 06/24/08 at 00:10:33

Title: Modifying the stock exhaust
Post by Fiskbil on 06/24/08 at 00:10:33

Hi guys, first time writer, long time reader on the forum.

I was wondering if anyone here has made any modifications to the stock exhaust on the Savage/S40?
I currently have a screaming eagle replica exhaust on my bike, but I think it looks ridiculously compared to the original exhaust and wonder if someone here has modified the stock exhaust to give better performance and, especially, a nicer sound?

My mother (yeah, skip the jokes) had a Savage a few years ago and it sounded waaay better with the original exhaust. I know that something was modified in it but I never got the chance to find out what.

Mine look totally rivited/welded up, can't see any way to remove the baffle. Is there any difference to the exhaust on my California -06 and my mothers European ~95?

Title: Re: Modifying the stock exhaust
Post by justin_o_guy2 on 06/24/08 at 00:59:39

There are several ways to go. Going backwards is hard to do. The stock exhaust just doesnt cut it for most folks. Some like it & they are squeezing the MPG out of it. HD takeoffs for $20.00 are a good way to improve the sound & performance, on the cheap & still not just be LOUD.
Or, the Supertrapp, kinda pricey, but tunable, pleasant sound, excellent performance booster. There are so many approaches, but thats the ones I know. Others will chip in.

Title: Re: Modifying the stock exhaust
Post by Sandy Koocanusa on 06/24/08 at 04:12:57

Someone had opened mine before I got it, so I am not 100% sure what they look like inside when stock. If you want, you can look back a few weeks for my "This muffler is screwed" thread. There are pictures there.

What I have found on mine is that the back plate is riveted into a ring that is part of the body of the muffler. Attached to the inside of this plate is a mesh cage full of fiberglass, or asbestos, or whatever. It looks a little like a silencer for a pistol. Farther toward the front, maybe a foot or so, is another plate with about a one-inch hole in it.

So, what has been done to mine is this:

1) The rivets in the back were removed and replaced with lag screws.
2) The weld that holds the cage closed was cut and the fiberglass removed.
3) Three, 5/16 holes were drilled in the forward plate using a bit extension.
4) I just yesterday changed to a larger pilot jet.

Now, more or less depending on my mood, I can remove or replace the back plate for a SIGNIFICANT change in the sound. When the plate is in, it is still louder than stock, but not too bad. When it is out, I worry some about upsetting the neighbors, but you should see the deer scatter ahead of me.

That plate fits tightly inside the body of the muffler. I just run a bar or channel lock handle or whatever is at hand inside and use it as a lever to wiggle it and then pop it out like a cork.

This will definitely change the way the bike runs, so be prepared to make changes at the carburetor. I won't know until tonight if I have made the right change or not. Haven't run it much with the new jet in.

Good luck!

Title: Re: Modifying the stock exhaust
Post by thumperclone on 06/24/08 at 06:38:27

there is a very OLD post w/ pics here somewhere happy searching ;)

Title: Re: Modifying the stock exhaust
Post by justin_o_guy2 on 06/24/08 at 06:50:36

Sandy said
"That plate fits tightly inside the body of the muffler. I just run a bar or channel lock handle or whatever is at hand inside and use it as a lever to wiggle it and then pop it out like a cork."

Wassamatta? Your throttle wont push it out? Fire that thing up & crank it open. Might want to be mindful of whats "Back There", I have no idea how far it might go, but it sounds like it would be fun.

Title: Re: Modifying the stock exhaust
Post by bill67 on 06/24/08 at 06:58:39

There is a plate up in there about 12 inches and another one 2 more inches I've been drilling than out for along time now since about 1978,gives a little more high power sound better except for my s40 doesn't sound to good to me ,but I really don't think singles sound very good.Anytime you gain in high end power you lose a low end power. You can also take a steel stake and knock that plate out.

Title: Re: Modifying the stock exhaust
Post by Sandy Koocanusa on 06/24/08 at 19:33:08

4D5254534E4978487840525E15270 wrote:

Sandy said
Wassamatta? Your throttle wont push it out? Fire that thing up & crank it open. Might want to be mindful of whats "Back There", I have no idea how far it might go, but it sounds like it would be fun.

;D You're right. It did sound like fun. So I went and tried it as soon as I read what you said. I just put it in kinda loose, so it was just barely engaging the muffler and opened 'er up. The plate and cage (baffle?) just kind of pooped out a little and hung there limply.

You had me hoping for projectiles. Instead I just got projections. Rats.

Title: Re: Modifying the stock exhaust
Post by justin_o_guy2 on 06/24/08 at 21:59:02

Ya wins a few, ya loses a few. I had such hopes.

Title: Re: Modifying the stock exhaust
Post by Fiskbil on 06/25/08 at 23:50:37

Thanks for all the input guys. I guess I'll tear into the sucker when I
have time to go to the workshop next time.

Ps. The workshop I'm referring to is Techshop. If you have one near you should check it out. They have a lot of cool machinery. :P http://www.techshop.ws/

Title: Re: Modifying the stock exhaust
Post by Todd Perry on 06/26/08 at 09:50:31

Quote:

The workshop I'm referring to is Techshop. If you have one near you should check it out. They have a lot of cool machinery. Tongue http://www.techshop.ws/

Yeah, I've been waiting for the one in Orlando to open for a while now...looks really cool. Expensive! ...but cool. For folks like me (living in an apartment but still needing to exercise mechanical skills from time to time), it might become a nice home away from home.

Plus it might help keep the complaints down - you'd be amazed how much my wife hates it when I weld in the bathroom (just because that's where the 220 is...) ::)

(p.s. kidding - always weld safely IAW local code, etc. etc.)

Title: Re: Modifying the stock exhaust
Post by thumperclone on 06/26/08 at 16:25:54

192C3B3B301B1D490 wrote:

Quote:

The workshop I'm referring to is Techshop. If you have one near you should check it out. They have a lot of cool machinery. Tongue http://www.techshop.ws/

when i lived in O town there was a place by the full sail school by ucf..

Title: Re: Modifying the stock exhaust
Post by Todd Perry on 06/26/08 at 16:55:39

Interesting! We're hijacking this thread, though - PM sent.