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Message started by DragBikeMike on 09/02/18 at 13:44:15

Title: Head Pipe
Post by DragBikeMike on 09/02/18 at 13:44:15

Have any of you tried to remove the inner (1.27" ID) pipe from the header? If so, how did you do it? How difficult was it?

Have any of you installed a larger ID head pipe? If so, how did it work? Where did you get it? How dramatically was your jetting affected?

Do any of you know of someone who actually installed a larger head pipe? If so, do you have contact info that you can share?

I'm not interested in theoretical info on head pipe diameter. I'm interested in actual results on the Savage. Real world, no bull results.

I appreciate any help and/or info on this subject.

Best regards to all, Mike

Title: Re: Head Pipe
Post by Ruttly on 09/03/18 at 08:10:34

DBM,I bought pipe & muffler on eBay that was new old stock that was a direct fit to the savage. A whopping 2" header-1 7/8 I.D. , muffler got chopped and then I made a repackable core for it. Hard to tell its improvement cause it got ported,97mm piston,mild cam with alittle more lift & duration and a 36mm mikuni all at the same time , then also modded the new carb. It runs like a bat out of hell , funniest bike I've ever built. IMO it seems to be lacking at low rpm but still haven't finished jetting it.
Depending on the level of engine mods 1 5/8 or 1 3/4" I.D. might be better. Once carb is dialed then I can mess with exhaust baffle I made it with 2 removable baffles. All in all it works great and looks great.

Title: Re: Head Pipe
Post by DragBikeMike on 09/03/18 at 14:51:55

Thanks for the info Ruttly. By any chance do you have some pictures of your Beast? I'd really like to see it.

If you feel the need to reduce the ID of your head pipe, here is an inexpensive solution that will keep it looking exactly the same on the outside. It works good and is easy to do. The setup pictured is 1.5" ID.

Title: Re: Head Pipe
Post by Dave on 09/03/18 at 18:16:45

7D7B74080A0D09390 wrote:

If you feel the need to reduce the ID of your head pipe, here is an inexpensive solution that will keep it looking exactly the same on the outside. It works good and is easy to do. The setup pictured is 1.5" ID.

Isn't that going to rattle....a lot?

Title: Re: Head Pipe
Post by batman on 09/03/18 at 22:40:58

Not after it rusts solid, but I think it will have a negative affect on flow.It might work better if you shoved it in the intake port.

Title: Re: Head Pipe
Post by DragBikeMike on 09/03/18 at 22:47:50

It doesn't rattle at all....and.....it actually seems to have reduced the noise output a bit. The audible noise is now at a lower frequency and possibly a lower volume, such that the intake noise now seems to be on par with exhaust noise. It's starting to sound kind of like a twin cylinder engine.

Performance seems very good (seat-o-da-pants). Majorly affects jetting, wants lots more fuel. I like it so far. Very interested about what other members have experienced with installation of a larger head pipe. The stock pipe seems grossly undersize.