hi, i read on another forum that the 87 carb's had circuit problems. anyone know what, and if so, how do i fix mine? i have noticed some minor problems, but would be nice to have it right.
thanks
aaron

 

I'm not trying to be a smart a$$ but the easiest fix would probably be get an '88+ carb or better yet a keihin.

later
Superstar

 

Get a 38 or 39 Keihin pwk. You will love it. Mikunis arent bad but mine always would drip gas when sitting, so I would always have to turn the gas off and run my quad a bit to empty the float bowl. My stock carb from my 86 LT250 wasnt that bad, tbut the Zilla carb I put on leaked a ton, then I got a Keihin and have had no problems.

 

I agree. go with kehien. I have a 40 on mine.

 

if your carbs dripping gas your float level is wrong

 

i have noticed mine is always dripping. i just figured needle worn, gas not shut off properly, etc....
so a 88 or up is the btter choice? prolly cheaper too, i suppose. is the flat slide a good carb. or round slide better? i have always heard the flat slide, so when i seen my 500 had one, i was impressed.
thanks guys
aaron

 

All of them do that crap. My friend is a better mechanic than me and he said he could get it stoped by adjusting the float . He did all he could and then said a bad word and then let it drip

 

The '87 carb needs the jetting converted over to a 'primary' type setup, as these carbs tend to 'lean out' on the slow speed circuit.

NOTHING will kill an LT500 motor quicker than running it lean other than running it with s--t gas or too small of a stinger.
You need to change ALL the jetting, (needle,needle jet, pilot, main) drill out a plug and machine the slide in order to convert an 87 carb over.
A lot of work and $$ when you can get an 88-up carb cheap on Flea Bay.
PLEASE don't learn the "hard way" w/ another "nuked" motor caused by a POS carb.
**((Direct quote from Dr. Q ))**