SuzukiSavage.com - Improved Running

Hell, Billy

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Re: Improved Running
Reply #15 - 09/15/07 at 10:56:30

Ahhh, here we go again w/ the pilot screw thing...I`m gonna get out some carb lit and check myself. I respectfully suggest when we do actually agree/determine which kinda pilot screw it is, we then carve it in stone somewhere in the tech section.

I thought counterclockwise was `richen' but now I just gotta know fo` sure, wild things.......

Bill

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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28387 Tucson Az Gender:	Re: Improved Running Reply #16 - 09/15/07 at 11:02:24 CCW is richer, allow more gas to be pulled up by engine vacuum. CW closes the passage, restricting gas flow. On some carbs the air/fuel mix screw does adjust air, not this one, it adjusts fuel.
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Hell, Billy Full Member Offline back in black, again Posts: 176 a dirt road, somewhere in R I	Re: Improved Running Reply #17 - 09/15/07 at 11:05:55 Ayer`s fische lists the screw as an AIR screw...... B
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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28387 Tucson Az Gender:	Re: Improved Running Reply #18 - 09/15/07 at 11:07:57 What they call, and what it does, are not the same thing. Crazy huh!
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SavageWahine

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Re: Improved Running
Reply #19 - 09/15/07 at 11:19:43

Dr_Jim wrote on 12/31/69 at 16:00:09:

Island -

I'd be tempted to do the main jet and white spacer modification, then uncap the pilot air screw and see how well the bike performs before installing the pilot jet.

Jim

Aloha Jim,
What do you mean uncap the pilot jet?
If you are talking about taking the cap that hides it off so you can turn the screw behind it, that has been done.
I even tried to follow lancers carb instructions...to no avail there was absolutely no difference.
I even removed the float bowl and checked out the main jet and pilot jet. The main is fine, the pilot I couldn't get out because the flathead notch was pretty shredded. Whoever messed with the carb before damaged it.
So that's why I'm overhauling the carb.

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Dr_Jim Ex Member	Re: Improved Running Reply #20 - 09/15/07 at 13:44:39 -
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rokrover

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Re: Improved Running
Reply #21 - 09/15/07 at 14:19:17

Really interesting, Dr_Jim. Perhaps that's why this screw doesn't have the usual idle-speed sensitivity when turned. When the idle screw is indeed an air adjustment then a half turn either side of optimum gives a noticeable drop in idle speed. Not so on my LS650 - a full turn either side of 2 out has little noticeable effect. So I just leave it at 2 out. Also did the white spacer mod today; shaved down from 2.85mm to 1.85mm with a carbide wheel on my hand dremel tool (a fine mini machine shop). Hard part was holding the spacer normal to the wheel so it wasn't ground down at an angle. Now the stumble off idle when cold is completely gone.

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Hell, Billy

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Re: Improved Running
Reply #22 - 09/15/07 at 14:56:29

Some fun.

According to; Chilton`s Motorcycle and ATV Repair Manual, 1945-85 [Greg you need this book it`s the Bible of old bike books, alas, no LS650s, but almost everything else, inc most excellent general info & an amazing troubleshooting section -2 copies on Amazon for $20-move quick];

pilot air screws are on the intake side and pilot fuel screws are between the slide and the manifold.....fuel screws turn OUT[CCW] for enrichening.

And Doc you are correct about the mix -up [ha ha can`t help myself sometimes], yes it is confusing ....so are we all in agreement?

CCW= RICH.......CW=LEAN

I`ll chisel it, if you hold the granite.

B

ps, it`s easier to thin that spacer by loosely placing a blunt pencil [anything with a bit of taper will do] in the hole and rubbing it in circles on a sheet of sandpaper on something flat, hold the pencil like you were writing and check frequently, it rubs thin fast.

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SavageWahine

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Re: Improved Running
Reply #23 - 09/15/07 at 18:16:00

rokrover wrote on 12/31/69 at 16:00:09:

Really interesting, Dr_Jim. Perhaps that's why this screw doesn't have the usual idle-speed sensitivity when turned. When the idle screw is indeed an air adjustment then a half turn either side of optimum gives a noticeable drop in idle speed. Not so on my LS650 - a full turn either side of 2 out has little noticeable effect. So I just leave it at 2 out. Also did the white spacer mod today; shaved down from 2.85mm to 1.85mm with a carbide wheel on my hand dremel tool (a fine mini machine shop). Hard part was holding the spacer normal to the wheel so it wasn't ground down at an angle. Now the stumble off idle when cold is completely gone.

I think I'm gonna take the easy way out and do what greenft did:
Quote:

Took out the doughnut thingy on the needle and replaced with a shim/washer 2/3 thickness of original doughnut thingy.

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You take the blue pill the story ends, you wake up in your bed and believe whatever you want to believe.
You take the red pill, you stay in Wonderland and I show you how deep the rabbit hole goes.

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SavageWahine Serious Thumper Offline Aloha & Hang Loose Posts: 1553 Beautiful Kauai! Gender:	Re: Improved Running Reply #24 - 09/15/07 at 18:17:40 I sure hope Clymer's refers to the Mikune carb, otherwise I'm gonna be in trouble reassembling the darn thing!
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