Planet Minis

oilspot · 03-04-2008, 07:43 PM

Doing some work trying to figure out jetting on my new TB88 rh setup. What's the float height supposed to be on these carbs? The symptoms I'm running into are spratic so I'm thinking that the float could be the problem.
I've got the stock main and pilot in there right now. I'm at 4500ft above sea level. It runs beautifully at WOT. Sputters sometimes at about 1/4 throttle, but not always.

If i don't keep the bike in the upper rpm's it almost feels like it loads up like a 2 stroke run below its powerband. Put it it neutral and clear it out and it's ready to run like crazy.

I know it's not a very good way to determine anything but the plug is a beautiful chocolately brown. I think the main is fine, but the pilot could use a size smaller. But of course, I don't wanna chase my tail around before I get the float set.

oilspot · 03-05-2008, 08:27 AM

so is everybody just guessin? or assuming that it's already set correct?

pandrew3 · 03-12-2008, 10:38 PM

bump

I am curious as well. Any help is appreciated.

dood · 03-12-2008, 10:53 PM

You need to select the main jet first to give you best wot
Select clip to get best past 1/4 throttle application
Select pilot and air screw for best idle and off idle response.
Float level mostly affects WOT.

03-04-2008, 07:43 PM	#1 (permalink)
oilspot 1st Gear Member Join Date: Jun 2007 Location: las cruces, new mexico Posts: 230	sheng way 20mm float height Doing some work trying to figure out jetting on my new TB88 rh setup. What's the float height supposed to be on these carbs? The symptoms I'm running into are spratic so I'm thinking that the float could be the problem. I've got the stock main and pilot in there right now. I'm at 4500ft above sea level. It runs beautifully at WOT. Sputters sometimes at about 1/4 throttle, but not always. If i don't keep the bike in the upper rpm's it almost feels like it loads up like a 2 stroke run below its powerband. Put it it neutral and clear it out and it's ready to run like crazy. I know it's not a very good way to determine anything but the plug is a beautiful chocolately brown. I think the main is fine, but the pilot could use a size smaller. But of course, I don't wanna chase my tail around before I get the float set.

03-05-2008, 08:27 AM	#2 (permalink)
oilspot 1st Gear Member Join Date: Jun 2007 Location: las cruces, new mexico Posts: 230	Re: sheng way 20mm float height so is everybody just guessin? or assuming that it's already set correct?

03-12-2008, 10:38 PM	#3 (permalink)
pandrew3 PM Newbie Join Date: Mar 2008 Location: Portland Posts: 30	Re: sheng way 20mm float height bump I am curious as well. Any help is appreciated.

03-12-2008, 10:53 PM	#4 (permalink)
dood 3rd Gear Member Join Date: Sep 2006 Location: Washington Posts: 3,055	Re: sheng way 20mm float height You need to select the main jet first to give you best wot Select clip to get best past 1/4 throttle application Select pilot and air screw for best idle and off idle response. Float level mostly affects WOT.

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