Topic: installed webcam 41 grind.. motor seems to run hot?

[bear]

I use an old plastic (no rust ) gas tank off a lawn mower.  Got it for free from my local small engine repair place off a junked mower.  Just need to add a something for a fuel shut-off tap.

Great minds think alike Brian.
Use on myself.

Cheers,
Brian

[seanbarney41]

3-4 mm from the top is about right

[MCRider]

Thanks MCR. I've seen them but I don't know who sells them. I tried to fashion my own and it didn't work too well. Should've been a simple thing...... I dropped the tank height down to a more natural level and that seemed to reduce the head pressure. I checked the float levels with a clear tube and found the float levels all over the place. One fuel level was at 3-4mm from the top of the bowl and another's was 30mm from the top.  Time to start bending fuel valve tangs and get them adjusted right.

Mine is from MotionPro.
http://www.motionpro.com/motorcycle/partno/08-0032/

[Nic]

Here's my masterpiece, there's a Tee piece that goes from the single line to the two going to the carbs.

[rlvitt]

Damn! (Smacking myself in the forehead) I'd never have thought of that! Thanks. Got one.

[rlvitt]

3-4 mm from the top is about right

Then the 25mm float setting only deals with the bottom of the floats themselves...... I was thinking that the fuel level sitting that high (3-4 mm)would interfere with the emulsification of the fuel/air mix in the main or the mix in the idle jet.  I'll check the fuel stain lines on the floats themselves and see what the traditional distance from the top of the bowl the have ridden in the past. I'm thinking that it will probably be in that range. Thanks for the idea!

[Wobbly]

So it's a sure thing that the cam change means they need to be refitted for proper carburation.

No, it is not. I just put that cam into my bike and it started right up and runs perfect without any modifications.

[rlvitt]

I found that, among everything else, I had to lean out my mixture a bit. I had to drop the mains to 110's from 120's and dropped the needles to the top notch. However, I was also dealing with a stuck float, I think, which certainly didn't help the bike run. I changed the oil and it smelled like gas. I've got early 70's carbs and maybe they are a little more fussy due to the horsetail cable than the later models carbs. I dropped the fuel bowls and checked for the fuel height stains on the floats and they all showed it at about 5mm down from the top of the bowl. I put new gaskets in on two of the carbs and it seems to have taken care of the stuck float problem. It idles at about 1K pretty nicely now and gathers RPM's well. And the exhaust doesn't look nearly as black during a roll on. I believe that I should do one more carb adjustment if things remain OK just to see if I can get it running any smother at idle.