G'day Fellas.
I've been given two CV carbs, both only 50 miles old. Old mate rode home then swapped them for SE's. Old mate passed away last year so can't ask him.
Thinking of replacing the old butterfly carb on my 1988 FXST. The bike has only done 14,000 miles from new and is stock bar an S&S airfilter and HD slip ons.
Carb #1. Sticker on body 27031-95A, engraved on body above float bowl 0TA GQL2, 40mm, pilot screw visible and a drain n the bowl.
Carb #2. Sticker on body 27422-99C, engraved on body above float bowl 99DA FSLC, 40mm, pilot and drain blanked off.
What headaches am I going to encounter?
Cheers

 

The 99 is a Twincam carb with a cruise control bracket on it, will have slightly bigger jets in it compared to the 95. The air/fuel screw still has the plug covering the screw, it needs removed for some screw tweaking but no issues putting it on the Evo.

 

G'day bagger.
Thanks mate. I pulled the 95 apart for cleaning. Didn't need to, clean as a whistle inside. 190 main, 72 pilot. Will do the 99 tomorrow.
The book says float height of 11mm. It was about 14mm (carb held at 15 degrees)! So I set it to 11 and then checked the FUEL height. It's about 3mm above the body/bowl joint. Too high in my book. Will take it back to 14 and see where the fuel sits.
Can anyone give me a definite FUEL height?
Cheers

 

You sure that wasn't a 42 pilot? Maybe get out a magnifying glass to confirm.

That float height sounds about right.

 

I always set mine fuel height to the top of the fuel bowl were it meets the carb body, if you use a clear hose on the over flow on the bottom of bowl, hold the carb straight up with the clear over flow hose straight up against the carb and bowl, open the over flow screw in the float bowl gas will fill the over flow hose and tell you exactly were the gas level is in your carb, "fluid always seeks level"

 

True!!

 

Within 1mm (+ or -) of the line where float meets body.

The "clear tube" method is my go-to for a final check, but it takes a bit of patience and any hint of an air bubble will give false readings. Obviously not all carbs have a drain, so best one can do is set with the measurement at 15 degrees and hope for the best.

 

G'day Fellas.
Matt, yes sorry typo it is 42.
Mike. yes that's how I checked the fuel height.
T150vej, thanks, that's what I thought. I'll aim for level with the joint (carb horizontal).
Just puzzled as I took the time to set up a jig at 15 degrees and set the float height to 11mm (half way in the specs) but got a fuel height of 3mm above the joint. I'll try 20 degrees and see where it ends up.
I'm no stranger to setting carbs up if I have the std specs and go from there. Been fiddling with'em for 50 years but no-one knows everything! That's where Forums like this (and great members) are a godsend.
Cheers

 

42 is stock and a bit lean, Id bump it up to a 45, a 190 is kinda fat but maybe ok for your bike, Id drop it to a 180 and try that

 

Then make sure to adjust your idle mixture screw! If the bike idles smoothly with the mixture screw 2-3 turns out the low jet should be good