Carb Rebuild - putting back together.

[teazer]

What is wrong here? This thread is going round in circles.

First off the carb must NOT be upside down as shown in all the pictures and drawings. LM has stated at least twice that the carb should be more or less on its side so that the tang is just resting on the spring loaded needle.

Some manuals show levels relative to the edge of the flange, but it's normal practice to measure from the gasket surface which is more accurate. You may have to change teh setting though to allow for that.

I also use the LM eyeball method and stick to that so I have them the same every time. The only time I change form that is with steeply angled carbs and then I check actual fuel level in the bowl and ignore float level.

Whether or not that complies with "the manual" is open to conjecture, but it works.

One could argue that a set of float level calipers would be more accurate, but the LM approach is to do what works. Just choose a method and use the same method all the time and you should be good to go.

[LOUD MOUSE]

How ya doing there t.?. .....lm

What is wrong here? This thread is going round in circles.

First off the carb must NOT be upside down as shown in all the pictures and drawings. LM has stated at least twice that the carb should be more or less on its side so that the tang is just resting on the spring loaded needle.

Some manuals show levels relative to the edge of the flange, but it's normal practice to measure from the gasket surface which is more accurate. You may have to change teh setting though to allow for that.

I also use the LM eyeball method and stick to that so I have them the same every time. The only time I change form that is with steeply angled carbs and then I check actual fuel level in the bowl and ignore float level.

Whether or not that complies with "the manual" is open to conjecture, but it works.

One could argue that a set of float level calipers would be more accurate, but the LM approach is to do what works. Just choose a method and use the same method all the time and you should be good to go.

[brewsky]

Position 2 is of no value.

The measurement is from the TOP of the carb body, not the "gasket surface." This is shown clearly in the official shop manual. As it pertains to the diagram Lee posted, the measurement would be to the extreme outer surface of the carb body ABOVE the notch. Makes a little difference, maybe 2mm?

OK.....Round 30???
This issue has been discussed before and I thought resolved...

http://www.honda305.com/forums/viewtopi ... ight=float

Indeed page 117, Fig. 5-3 of the Official Shop Manual (Jan. 1960 edition, reprinted 1971) does show measurement to the carb body. It says "h" is the distance to be measured, with "h" = 22.5mm for PW26, and 26.5mm for PW 22.

However, as I understand it, early carbs (circa 1960) had no recess or flange, so the carb body WAS the same as the gasket recess.

As Teazer indicated, it is common practice between manufacturers to measure from the gasket surface.

To be really precise, as stated in the same manual, the distance "H" should be measured, which is the distance from the bottom of the main bore of the carb to the actual fuel level of the carb.

This could be easily measured more accurately with a clear fuel hose from the bottom of the carb extending up to the bottom of the carb bore. However, I have not been able to find any specs for that measurement.

Unfortunately, I can't use LM's recipe for a Dream carb.

[marlin4622]

I was not under the impression that these measurement could be taken subjectively.. I also was not aware that this topic would step on peoples toes on how they tune their float lvl. Thanks for all the replies though, and apologize for any ill feelings. My intentions were only to bring my observations to this thread, not to step on the toes of the well established here on the forum.

[LOUD MOUSE]

A quick question.
Do ya have PW22 or 26mm carbs? ..................lm

I was not under the impression that these measurement could be taken subjectively.. I also was not aware that this topic would step on peoples toes on how they tune their float lvl. Thanks for all the replies though, and apologize for any ill feelings. My intentions were only to bring my observations to this thread, not to step on the toes of the well established here on the forum.

[brewsky]

I was not under the impression that these measurement could be taken subjectively.. I also was not aware that this topic would step on peoples toes on how they tune their float lvl. Thanks for all the replies though, and apologize for any ill feelings. My intentions were only to bring my observations to this thread, not to step on the toes of the well established here on the forum.

No ill feelings here, Marlin, it's all about communicating, and the English language is famous for multiple meanings for the same word or phrase.

My attempt to further help you understand made things worse by incorrectly explaining LM's method.
His method takes out the possibility of measurement error.

One thing is fairly certain, the original instructions given by your vendor, who said the height should be 26.5, are incorrect. (for PW26)

[marlin4622]

LM - I am running PW26.

Thanks for all the help gentlemen!