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General Category >> Rubber Side Down! >> Finally some luck!
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Message started by Dennisgb on 09/05/20 at 13:28:41

Title: Finally some luck!
Post by Dennisgb on 09/05/20 at 13:28:41

The engine is back in the bike and it started right up! Runs very well. I did all the mods suggested here. Carb jetting, plastic clip mod, dyna exhaust. Opened the exhaust port.

I adjusted the pilot screw slightly and set the idle. Took it for a ride and everything seem great.

Here’s a picture. The Dyna pipe is a Vance and Hines that I bought as a lost pipe from a pair for $50. All I needed was a short pipe between the header and the muffler. Had a Honda pipe laying around that had the clamp at one end. Worked a treat.

My next thread will be “Mounting a Sidecar to My S40” ;D

Title: Re: Finally some luck!
Post by Ruttly on 09/06/20 at 05:03:39

Nice job , looks great ! Can’t wait to see it with a sidecar !

Title: Re: Finally some luck!
Post by ohiomoto on 09/06/20 at 05:21:35

Great job.

Title: Re: Finally some luck!
Post by Serowbot on 09/06/20 at 07:55:34

Nice goin'!..

What's the plastic clip mod?... :-?

Title: Re: Finally some luck!
Post by Dennisgb on 09/06/20 at 10:41:19

6274637E66737E65110 wrote:

Nice goin'!..

What's the plastic clip mod?... :-?

That’s the mod to the needle clip in the carb...maybe the wrong terminology. It moves the needle up a bit. I did all the basic mods listed on here. Mainly because I wanted the less restrictive exhaust. I was really surprised at how well it ran because normally when you do mods to carb it takes a bit of tweaking. I rebuilt the engine also. I turned the gas on, turned the key and hit the starter button and it started right up and actually idled pretty decent. I’ve built a lot of bikes and very few started an ran this good out of the box. I think it shows how good this site is for the Savage/S40

Title: Re: Finally some luck!
Post by LANCER on 09/07/20 at 18:45:16

Yep

Title: Re: Finally some luck!
Post by Dave on 09/08/20 at 03:31:18

The Savage motor is basically a fancy lawn mower engine - not too sophisticated, and the jetting is pretty consistent. Extreme altitude changes is about the only thing that makes deviating from the basics necessary. (Although some open exhaust and cone filters have caused jetting to be nearly impossible to achieve a good running bike).

Title: Re: Finally some luck!
Post by Ruttly on 09/08/20 at 22:24:56

Bite your tongue Dave , mine runs like a competition chain saw ;D ;D ;D

Title: Re: Finally some luck!
Post by ohiomoto on 09/09/20 at 04:51:31

My mower has a higher power to weight ratio. :-? :-?

Title: Re: Finally some luck!
Post by LANCER on 09/09/20 at 08:11:44

My engine originally came out of an old John Deere tractor that was on the property back in the 60’s when my folks moved back here ... I’m pretty sure this is mostly accurate anyway. [ch127949] [ch128526] [ch127949]

Title: Re: Finally some luck!
Post by Dennisgb on 09/09/20 at 08:28:11

I’ve owned a lot cruder engines than this one. The Royal Enfield Bullet 500 I talked about in another thread is just one of them. When I was building that engine I was laughing the whole time about how simple and crude it was.

The Suzuki engine is really quite sophisticated by comparison. Probably the only thing I wish was a better design is the head in terms of restrictions. There is a good amount of HP lost there.