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post #1 of (permalink) Old 12-15-1999, 08:19 AM
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keihin carbs

So let me see if I have this straight. On the keihin carb air screw out is lean and in is rich? Which is exactly the opposite of the mikuni round slide carbs, right?
Trying to dial in my 97 rmk 700. Ran perfect last year with 190/195 main, needle clip third position and 40 pilots, at 4000-6500 feet. It has slp porting, head and twin pipes. Moved over the summer and ride at 7000-10000 now. Runs great at 7000 but as I climb it develops a terrible off idle bog. Slp recommends a 48 pilot (with no boost bottle) at this altitude. I was thinking its rich and wanted to go with a 35 pilot. Any ideas would be helpful.

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post #2 of (permalink) Old 12-15-1999, 10:03 AM
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Re: keihin carbs

Rich, I don't know if I would go to 35's. I would try smaller increments with kehins. I do have some 45's you're welcome to try. You may want to look at 185/190's on your mains if your are running the same jetting you did down low.

Adrian

ps, I am heading up mirror 6 am Saturday, Nate said he might be up later. My daughter will be up from SUU and has been dying to go. The more the merrier.

post #3 of (permalink) Old 12-15-1999, 08:58 PM
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Re: keihin carbs

Snonut, I'd like to try your 45's. I've been using 178/180 and 175/178 mains at 7000 to 10000. They work prety good, the 178/180 is alittle rich. I'll definitely be riding on saturday. Have you been up to the mirror lake highway this year? Is there much snow that way? We road up weber canyon last saturday in about 3 feet of un touch powder, there has got to be another foot on top of that since this last storm. Would like to hook up for a ride, but I can't leave until 7:00 a.m.


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post #4 of (permalink) Old 12-15-1999, 09:18 PM
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Re: keihin carbs

Yes. No. They both have air screws. Easy way to think of it right is the name. AIR screw on some carbs and FUEL screw on others. When you adjust them you adjust air on the air screw carbs and fuel on the other. Open them up (turn out) and you get more air or fuel which ever carb your working on. More air is lean, more fuel is rich. On your bog problem have you tried the air screw first? If you need to go leaner you can change the pilots to 38 or 35. And/ or you can also change the needles to a larger diameter like the 1369g or 1370g. If you need richer you can go up with pilots 42, 45, 48 etc. Slides are available also. Lean bog is a dead spot/hesitation with even a pop, high idle and rich will stumble and be sluggish with a dull exhaust tone low idle. Good luck

post #5 of (permalink) Old 12-15-1999, 11:01 PM
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Re: keihin carbs

I am running 40 pilots with porting and SLP single pipe. A friend is running 38 pilots with porting and twin SLP's. No boost bottle. My bottom end is perfect.

Corey

post #6 of (permalink) Old 12-16-1999, 10:05 AM
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Re: keihin carbs

Madmax,
As much as I would like to get out early, We most likely won't get out til 6:30 or 7:00. I was told there is enough to road ride without a problem, but not to get off the road much. I am still waiting for a skid plate that's on backorder, so I want to be somewhat careful. Do you want to meet somewhere?

Snownut

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