SuzukiSavage.com - Rejetting That Works

bill67

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Re: Rejetting That Works
Reply #15 - 02/23/10 at 10:20:22

Routy wrote on 02/23/10 at 06:03:24:

From the reading here, it sure seems that even the same yr model bikes do not run the same.
My 07 stocker had only a lean spot in low/midrange, which a 1/2 spacer mod fixed to perfect (as near as I can describe) thru the entire range. I would never touch my jetting for sure. Others in the same yr model range, report needing more jetting, etc etc.

Now what really differs, is how I have to really baby the throttle to get 50 mpg, and thats at seldom over 50 mph ! Except for downhill w/ a tail wind, I don't know how some are getting 60-70 mpg Shocked

But you did hear about the 2 old guys that bought 2 new identical cars........ Cheesy

You got a lemon or your carburation is off.

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Routy

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Re: Rejetting That Works
Reply #16 - 02/23/10 at 18:54:36

Dasch,
Maybe you should learn to read who said what before you accuse people of saying stuff they didn't.
To put it more clearly, I didn't write what you said I wrote !

dasch wrote on 02/23/10 at 08:09:37:

Yes routy, pertaining to your post. Here's what you said:
"The bikes with carburators are tuned so close to the EPA emissions

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Rich
'07 S40 Blvd stocker, except drilled OEM exhaust and white spacer mod...1/2 (.055)

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dasch Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1137	Re: Rejetting That Works Reply #17 - 02/23/10 at 20:45:59 That's right, you actually didn't... Routy, I am embarrased... I mechanically replied to you, although it was SmokinBlue's post I was referring to. Sorry about that. Anyhow, I wonder if any of you US riders ever failed EPA test because of small carb interventions (mix screw adjustment or one size larger idle jet).
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verslagen1

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Re: Rejetting That Works
Reply #18 - 02/23/10 at 21:06:51

dasch wrote on 02/23/10 at 20:45:59:

That's right, you actually didn't... Routy, I am embarrased... I mechanically replied to you, although it was SmokinBlue's post I was referring to. Sorry about that.
Anyhow, I wonder if any of you US riders ever failed EPA test because of small carb interventions (mix screw adjustment or one size larger idle jet).

EPA what?
no testing required in CA Cool

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Serowbot

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OK.... so what's the
speed of dark?

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Re: Rejetting That Works
Reply #19 - 02/23/10 at 22:07:44

Az don't test bikes anymore,.. but the first year I had mine, I did a sporty muff, k/n filter, and did a 2/3 spacer. 150 main, and idle mix adjust...
They had to sock the muffler to get any reading at all... and I suspect that was from overheating with 10 min. idling...
A well tuned bike, will pass emissions...

Number one testing tip for cars or bikes,... keep the idle speed up..... Wink

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Ludicrous Speed !... ... Huh

...

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Serowbot

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OK.... so what's the
speed of dark?

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Re: Rejetting That Works
Reply #20 - 02/23/10 at 22:15:43

The slide is controlled by engine vacuum.... steady state cruising at speeds under 60mph or so, give very high vacuum, so there's not much slide action... you should be running mostly on the pilot jet...
Slide is mostly active on acceleration... or WFO...
...it's pretty much a metering rod for the main jet...not really a separate system... once it's at zero vacuum, it's out of the way and the main is clear...
The pilot jet has the biggest effect on mileage, if you're a mileage junkie...
If you're a squid,... that's a whole 'nuther story... Grin

Jets don't really react according to a bikes speed,... they react to engine vacuum...

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Ludicrous Speed !... ... Huh

...

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Routy Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2280 Winston Oregon Gender:	Re: Rejetting That Works Reply #21 - 02/24/10 at 05:09:27 bill67 wrote on 02/23/10 at 10:20:22: Routy wrote on 02/23/10 at 06:03:24: But you did hear about the 2 old guys that bought 2 new identical cars........ You got a lemon or your carburation is off. Very obvious,..... you never heard about them
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bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: Rejetting That Works Reply #22 - 02/24/10 at 05:20:59 Your getting the lowest mpg of anyone on here,There has to be a reason,Or you think everyone else is lying.
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Routy

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Re: Rejetting That Works
Reply #23 - 02/24/10 at 12:54:43

Obvious you don't read much here, there are many down in the 40's. Now if I was a flat lander, I would probaby be doing 50 too, but I ride nothing but back hills here. But don't worry about it, my mpg is just fine, probably better than your if all was equal,.....and truthful.
bill67 wrote on 02/24/10 at 05:20:59:

Your getting the lowest mpg of anyone on here,There has to be a reason,Or you think everyone else is lying.

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Rich
'07 S40 Blvd stocker, except drilled OEM exhaust and white spacer mod...1/2 (.055)

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Bear Junior Member Offline Electrical Engineer - Retired - Ridin' for 43 yrs Posts: 71 Central Washington State Gender:	Re: Rejetting That Works Reply #24 - 02/24/10 at 13:14:24 I wrote the original post. Just as a side note, I have had no discoloration on the exhaust after 2300 miles, it is still as shiny as new.
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bill67

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Re: Rejetting That Works
Reply #25 - 02/24/10 at 15:12:15

Routy wrote on 02/24/10 at 12:54:43:

Obvious you don't read much here, there are many down in the 40's. Now if I was a flat lander, I would probaby be doing 50 too, but I ride nothing but back hills here. But don't worry about it, my mpg is just fine, probably better than your if all was equal,.....and truthful.
bill67 wrote on 02/24/10 at 05:20:59:

Your getting the lowest mpg of anyone on here,There has to be a reason,Or you think everyone else is lying.

When you go up those hills don't you come back down them too.

I'm happy with my 60+ mpg and your happy with your 40+ mpg,Were both happy riders.

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william h krumpen

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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: Rejetting That Works Reply #26 - 02/24/10 at 15:12:19 My '88 with an '02 engine and an '88 carb in it is perfectly legal with the stock jets (155 I think) getting 1.9 to 2.1 gallons per 100 miles or so. Vs. my '96 and 150 main is ilegal getting 1.8 to 2.0 per 100 miles?
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LANCER

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Re: Rejetting That Works
Reply #27 - 02/24/10 at 15:31:17

bill67 wrote on 02/23/10 at 06:13:33:

Thats one reason I didn't change the spacer was to get good mpg and keep the plug from fouling.Your on the low speed jet only at low speeds and high speed jet mostly if your at wide open throttle,the spacer is where you are driving most of the time.The high and low speed jets do help the mid range some.

Mikuni Carb Manual

http://www.mikuni.com/pdf/vmmanual.pdf

-see page 20 for "Functional Range Effectiveness of tuning parts in relation to the throttle valve opening"

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bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: Rejetting That Works Reply #28 - 02/24/10 at 16:20:09 That a vm carb s40 doesn't have a vm carb.
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Ed L.

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Re: Rejetting That Works
Reply #29 - 02/24/10 at 16:39:45

Well I'm guilty cause I probably get only 50 mpg on a good day. I expect it is due to my driving style but even babying my '02 I'm lucky to get 55 mpg. Of course a lot of my riding is done on the superslab at around 70 mph which is making the engine work harder than on the secondary roads. I'm not running rich cause my pipe is a nice golden color instead of deep blue. My worst milage was 38 mpg when I was squiding around a bunch of twisties in second and third gear.

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Silver '02, clubman handle bars, Cobra headlight, Sportster muffler, K+N stock air filter, 152.5 main, Superbrace, oil cooler, 1/2 inch aluminium plate forward controls, spark advance, goes like stink

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