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General Category >> Rubber Side Down! >> Bought a Savage, need some advice!
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Message started by DannyParanoid on 08/15/13 at 09:19:38

Title: Bought a Savage, need some advice!
Post by DannyParanoid on 08/15/13 at 09:19:38

Hi guys!

Ive just bought a savage based bobber (pics to follow when i take some) but it's not running very well. It's alright when cold, but once warm it tends to misfire and be jerky on acceleration. It's had a conversion to a points ignition system somewhere in its life so maybe this is the problem?

It also has a Mk1 Amal carb on it, which we have taken apart, cleaned out, resealed and put back on to which no difference was made.

Does anyone have any suggestions?

Thanks

Dan

Title: Re: Bought a Savage, need some advice!
Post by Oldfeller on 08/15/13 at 09:32:18

37323D3D2A233221323D3C3A37530 wrote:

Looking forward to the pics on this modification.

Need to see pics on this rig up to try to answer your question as most everything ignition/electrical wise on the bike gets routed through the black box and you ain't got one any more.

So .... you have a somewhat unique situation to deal with.

Title: Re: Bought a Savage, need some advice!
Post by WD on 08/15/13 at 09:43:58

I HATE cdi ignitions and CV carbs, can't wait to see a points and real carburetor conversion.

Check your points gap, check for pitting, check for "wobble" on the points cam.

I have a bunch of points fired engines... 1949 Dodge truck with 218 and 230 flathead 6 engines, 1969 Dodge truck with a 318 V8, 1971 (licensed as) Dodge truck based RV with 413-3 V8, 1972 Super Beetle, 1963 Honda CL72 (250 Scrambler) motorcycle, 1971 Honda CL100 Scrambler motorcycle, John Deere 1020 UL 3 cylinder gasoline fueled tractor, several outboards and generators...

Points are easy.

Title: Re: Bought a Savage, need some advice!
Post by justin_o_guy2 on 08/15/13 at 09:45:30

It's alright when cold, but once warm it tends to misfire and be jerky on acceleration.

What jets are in it? What exhaust is on it?

Now, in my world, a cold engine is lean & needs a choke,,If yours runs okay cold & funky warm,, are you gettin black sooty stuff on the rear wheel? Just the description
good /cold
bad/warm
leads me to think it mite be rich,

Hows the MPG?

How many miles on it?

Title: Re: Bought a Savage, need some advice!
Post by verslagen1 on 08/15/13 at 10:11:36

I like this answer...

Quote:

ok I have a tuned bsa c25 engine and its a fit engine but it seems to not get enough fuel? it runs well but its white in center of spark plug and it seems a tad short on power? the air/fuel is in all the way=rich and I've tried the choke on full and half. I've stripped it down to c if out is blocked but it isn't. help?

Quote:

This is one of the worst carbs to tune. The air/fuel screw should be set to 1 1/2 turns out. If it's all the way in and still runs, you need to replace the screw (the tip is probably bent). Next, start checking for air leaks. AmalMK1s provide enough fuel for the bike, your leg and the ground. If it's running lean, it's from to much air

Your PO was a masochist.... did he also convert the electrics to Lucas?

There are so many ways this could go wrong, take one and chase it down.
I'd find somebody with a diagnostic scope and hook it up, it'll tell you a lot.
But I have to go with JOG's answer... jetting is most likely the issue.

and we need pictures, this is the most wild a$$ed mod yet.

Title: Re: Bought a Savage, need some advice!
Post by Charon on 08/15/13 at 10:59:09

I find it incredible that anyone would remove a perfectly good electronic ignition system and replace it with points. Particularly when the electronic system can automatically take care of spark advance, impossible with mechanically actuated points unless they also incorporate centrifugal and vacuum advances.

By the way, the Savage/S40 has NEVER had a CDI - it is a TCI.

Title: Re: Bought a Savage, need some advice!
Post by WD on 08/15/13 at 17:31:48

It's still a mystery box of doom... Wish I had the how to rebuild your Savage black box thread from the old forum, neat read, and at the time (1999/2000) it was about $10 worth of "small stuff" from Radio Shack.

Title: Re: Bought a Savage, need some advice!
Post by Steve H on 08/15/13 at 18:27:43

I would love to see the points conversion. Carry $10 worth of spares in your tool kit and say goodbye to expensive electronic junk that you need $10,000 worth of test equipment to diagnose. And, when the EMP comes, the only thing you'll have to replace might be the coil because of its internal diode.

I'll agree electronics don't require as much maintenance, and are more reliable when working, but there's no middle ground, they're dead or working. Dead=expensive. No quick rigged roadside repair.

Title: Re: Bought a Savage, need some advice!
Post by justin_o_guy2 on 08/16/13 at 03:54:16

I'll agree electronics don't require as much maintenance, and are more reliable when working, but there's no middle ground, they're dead or working. Dead=expensive. No quick rigged roadside repair.

sums it up nicely & fits the
Every rose has its thorn
theory

Title: Re: Bought a Savage, need some advice!
Post by DannyParanoid on 08/16/13 at 13:08:51

Yeah its got a lot wrong with it, ill upload some pictures tomorrow so you can all get a look, ive had a go at moving the carb needle to try and adjust the fueling to see if that makes a difference but no success so far!

Title: Re: Bought a Savage, need some advice!
Post by justin_o_guy2 on 08/16/13 at 13:12:40

What jets are in it?
Whats your elevation above sea lavel?