07' Boiled over!!! - Page 2

GMP · #11 05-22-2012, 09:06 PM

No spooge = too lean, don't jet based on spooge.

desertgasser300 · #12 05-22-2012, 10:30 PM

V

Quote:

Originally Posted by Jakobi

I just plotted it out graphically. CEK#2 is very lean particularly so at 1/4 to 1/2 throttle. For example most people here are running 38 N3CH#2 172/175 for altitude. Comparing to 40 CEK#2 175 they are very similar from 1/2 throttle to WOT. The CEK is around 11% leaner at 1/4 throttle though.

You blow my mind how knowledgable you are on jetting..

The CEK what it came back with from RB designs.

Jakobi · #13 05-23-2012, 04:47 AM

Quote:

Originally Posted by desertgasser300

V

You blow my mind how knowledgable you are on jetting..

..I'm using JDs jetting spreadsheet. LOL! Not much skill on my behalf. I don't think I'm very knowledgable at all. Definately not an expert. Just a noob who has had a bit of time to play around and report the findings.

If it was boarderline lean going a clip richer should help it out. My experience is like Glenn said. Going leaner will continue to make throttle control crisper but it will also get smoother as it won't be making the same power under load.

swazi_matt · #14 05-23-2012, 11:55 AM

Is there a chance your coolant is old and not working like it should?

desertgasser300 · #15 05-23-2012, 02:41 PM

Quote:

Originally Posted by swazi_matt

Is there a chance your coolant is old and not working like it should?

Coolant is two months old.

I think I might leave the jetting where it is now for this weekends race. Its not a fast trail, more technical and rocky.

Andoman, curious if you are entered this weekend?

bowhunter007 · #16 05-23-2012, 03:48 PM

Burping out ALL of the air is as important as all the other suggestions.

andoman · #17 05-23-2012, 08:52 PM

Quote:

Originally Posted by desertgasser300

Coolant is two months old.

I think I might leave the jetting where it is now for this weekends race. Its not a fast trail, more technical and rocky.

Andoman, curious if you are entered this weekend?

I wish. I work out of town 3-4 days a week. So I only race/epic ride 3 or 4 times a year. Most all of my riding is local a couple of times a week. I'm in Payson and only have to ride 1 mile down a dirt road from my drive-way to the trail.

Another thought about your overheating: I had a Rekluse in my Orange 540. With normal plate wear and the resultant installed gap increase, I noticed the bike regularly running hot before I ever noticed the clutch slipping more than usual.

swazi_matt · #18 05-24-2012, 12:14 AM

What Rekluse do you have? I had the z start on my kx250 and it def made things hotter because I could never get full engagement at v low revs so on tech climbs I could not chug. But I am guessing that if you had just fitted it and then it started boiling you would already have your answer and would not be asking here :-/

GMP · #19 05-24-2012, 07:37 AM

Four strokes are a bit different with respect to clutch slipping influencing overheating. They run at a much higher temperature than a two stroke, much closer to the boiling point even in a normal situation.

swazi_matt · #20 05-24-2012, 03:02 PM

Mine was on a kx250 2t with z-start, not even the pro, believe they have progressed a bit since then. On some of the rocky climbs we do here the clutch cover would sizzle if you poured water on at the top and most bikes boiled on the way up. Have since done the same mountain on the GG and only steamed (was riding with orange bikes so hardly a boil in comparison!) in the last hundred meters or so. Really made me question myself why I ever tried to endorize an mx bike!