Topic: source for decent carb kits?

[DYSKORD]

I have searched for hours and couldn't find any info on an actual source for a 76F carb rebuild kit. Are they the same for the K's aside from the pilot and mains? Read enough about keysters to know to stay away so now what? At the price Honda wants for each individual piece you'd might as well buy some CR's.

Thanks for any and all direction

[wedoo2]

I got mine at PartsNMore.  Pretty reasonable too.

[chickenman_26]

I have searched for hours and couldn't find any info on an actual source for a 76F carb rebuild kit. Are they the same for the K's aside from the pilot and mains? Read enough about keysters to know to stay away so now what? At the price Honda wants for each individual piece you'd might as well buy some CR's. Thanks for any and all direction

The '76 K and F use the same gasket kit and needle jet set. Honda dealers sell the gasket kits on-line for around $15 each - lower than in store prices. They contain all the gaskets and O rings you'll need. You'll also want to replace the needle jet sets in those carbs (16012-392-004) with original Honda parts for around $16 each. If you don't, you're almost guaranteed to have a rich running bike. The rest of the jetting can be cleaned and reused. So rubber stuff and needle jet sets from Honda will run you around $140 including tax for all 4 carbs.  That's around $50 more than buying 4 Keyster kits, and the results are likely to be well worth the additional cost.

Stu

Stu

[jaguar]

honda parts direct is where i get almost all of my parts.
I will only use OEM carb parts.  Honda should have almost anything that you need service wise

[Bodi]

Agreed.
The aftermarket kits have dodgy needles (the taper is not identical to OEM), the jets are generally OK (but do these really ever wear out?), the carb top gasket is fine. The float bowl gaskets are OK except they swell up with fuel contact - maybe this is from ethanol in the gas, I don't know - which I suppose improves the seal but when you remove the bowl again you have to wait 12 hours or more to get them to shrink back down so there's some hope of reinstalling them.
The Honda gasket kits include all the O-rings, including those for the fuel transfer connectors between carbs: these are difficult to source otherwise if you take the carb stack apart. The Honda kit bowl seal O-ring is fuel proof and does not swell up.
The last time I checked Honda had all the needles, jets, and emulsion tubes available. These are Keihin parts so I suppose as long as Keihin is willing to make them, Honda will sell them.
For float valves, I get OEM as well. The aftermarket ones have caused me grief, not having to pull the stack again to re-replace these is worth the extra cost of "real" parts.

[DYSKORD]

I have searched for hours and couldn't find any info on an actual source for a 76F carb rebuild kit. Are they the same for the K's aside from the pilot and mains? Read enough about keysters to know to stay away so now what? At the price Honda wants for each individual piece you'd might as well buy some CR's. Thanks for any and all direction

The '76 K and F use the same gasket kit and needle jet set. Honda dealers sell the gasket kits on-line for around $15 each - lower than in store prices. They contain all the gaskets and O rings you'll need. You'll also want to replace the needle jet sets in those carbs (16012-392-004) with original Honda parts for around $16 each. If you don't, you're almost guaranteed to have a rich running bike. The rest of the jetting can be cleaned and reused. So rubber stuff and needle jet sets from Honda will run you around $140 including tax for all 4 carbs.  That's around $50 more than buying 4 Keyster kits, and the results are likely to be well worth the additional cost.

Stu

Stu

Best answer to a question yet. Thank you sir. Much appreciated.
On another note. . .

If one were to want to increase pilot size buy one increment with a 76F, which I believe to be from 40 to 42, is the only option to buy the pilot jet (don't remember part #) and trim down the length?

[chickenman_26]

Trim the length? That would ruin the jet. Order part # 99124-076-0420 and install as-is.

Stu

[DYSKORD]

Trim the length? That would ruin the jet. Order part # 99124-076-0420 and install as-is.

Stu

Yeah from what I have found they are only sold as a 32mm length and they say to cut to 28mm.
http://www.motorcyclecarbs.com/Keihin_Pilot_Jet_N424-24_C92.cfm

It looks like the part# you listed is for a 400F. I realize now I didnt say which "F" I had. Or does it matter?

Edit: So it looks like you are correct. The slow jet is listed as a 400F jet but is the correct length (28mm) as the 750 slow jet. Further research shows they are compatible. The link I posted says to trim down from 32mm, weird.
Thanks again Stu!

[lucky]

I have searched for hours and couldn't find any info on an actual source for a 76F carb rebuild kit. Are they the same for the K's aside from the pilot and mains? Read enough about keysters to know to stay away so now what? At the price Honda wants for each individual piece you'd might as well buy some CR's.

Thanks for any and all direction

Motorcycles are not like cars.
There are kits for the different parts of the carbs and there are people that sell jets.
But in the motorcycle world the carbs do not have many paper gaskets like a car.
You have to decide what is needed and get it from the best source.

[chickenman_26]

Edit: So it looks like you are correct. The slow jet is listed as a 400F jet but is the correct length (28mm) as the 750 slow jet. Further research shows they are compatible. The link I posted says to trim down from 32mm, weird.
Thanks again Stu!

The #42 jet was listed for the 400F, because it was the standard jet for that bike. You'll understand how I figured out the part number for the oversize after you get a bit more familiar with Honda's part numbering system. The standard #40 jet for your bike is #99124-076-0400. To get the exact same jet in size 42, just change the last 4 digits to 0420. The link that says to trim the jet is selling aftermarket jets that fit a different application. They figure trimming can make them fit your application. Not good IMHO.


Stu

[DYSKORD]

Edit: So it looks like you are correct. The slow jet is listed as a 400F jet but is the correct length (28mm) as the 750 slow jet. Further research shows they are compatible. The link I posted says to trim down from 32mm, weird.
Thanks again Stu!

The #42 jet was listed for the 400F, because it was the standard jet for that bike. You'll understand how I figured out the part number for the oversize after you get a bit more familiar with Honda's part numbering system. The standard #40 jet for your bike is #99124-076-0400. To get the exact same jet in size 42, just change the last 4 digits to 0420. The link that says to trim the jet is selling aftermarket jets that fit a different application. They figure trimming can make them fit your application. Not good IMHO.


Stu

Brilliant! Thanks again!

[cougar]

Hey DYSKORD ; I've got a 76 with roundtops and I got my rebuild kits from these folks, http://olypen.com/retro/   . Price and shipping was great and after the rebuild I'm satisfied with the product they sold me and would buy from them again. Just my 2 cents.   ...cougar...

[lucky]

Edit: So it looks like you are correct. The slow jet is listed as a 400F jet but is the correct length (28mm) as the 750 slow jet. Further research shows they are compatible. The link I posted says to trim down from 32mm, weird.
Thanks again Stu!

The #42 jet was listed for the 400F, because it was the standard jet for that bike. You'll understand how I figured out the part number for the oversize after you get a bit more familiar with Honda's part numbering system. The standard #40 jet for your bike is #99124-076-0400. To get the exact same jet in size 42, just change the last 4 digits to 0420. The link that says to trim the jet is selling aftermarket jets that fit a different application. They figure trimming can make them fit your application. Not good IMHO.


Stu

#42 jet means .42mm. Then go to Google and type in mm=inches you will then get the conversion to thousandths. So it has a hole in it .016 thousandths of an inch.

[lucky]

I have searched for hours and couldn't find any info on an actual source for a 76F carb rebuild kit. Are they the same for the K's aside from the pilot and mains? Read enough about keysters to know to stay away so now what? At the price Honda wants for each individual piece you'd might as well buy some CR's.

Thanks for any and all direction

A motorcycle carb is NOT like a car.
When you take the carb apart it has brass jets.
The only part you really need is the float needles which has a rubber tip. Absolutely essential.  You do not need the seats unless it had all metal float needles. Switch those out for the more modern rubber tipped needles.
I am not even sure if the all metal needles are even available anymore.
There are no paper gaskets.
The float bowl gaskets almost never need replacing but are available separately.

If it has a accleerator pump circuit those parts are available separately.

AGAIN.... it is NOT like car parts world.

[DYSKORD]

I have searched for hours and couldn't find any info on an actual source for a 76F carb rebuild kit. Are they the same for the K's aside from the pilot and mains? Read enough about keysters to know to stay away so now what? At the price Honda wants for each individual piece you'd might as well buy some CR's.

Thanks for any and all direction

A motorcycle carb is NOT like a car.
When you take the carb apart it has brass jets.
The only part you really need is the float needles which has a rubber tip. Absolutely essential.  You do not need the seats unless it had all metal float needles. Switch those out for the more modern rubber tipped needles.
I am not even sure if the all metal needles are even available anymore.
There are no paper gaskets.
The float bowl gaskets almost never need replacing but are available separately.

If it has a accleerator pump circuit those parts are available separately.

AGAIN.... it is NOT like car parts world.

Well I would say the needle jets, o-rings and bowl gaskets wear out/rip. Just want to be a bit more thorough than just replacing my float needles during my overhaul. Its handy knowledge for anybody out there who doesn't trust what the PO may or may not have done to know where to get quality parts. Nobody said anything about car parts, I am not sure why you keep repeating this and now in CAPS LOCK.

Edit: So it looks like you are correct. The slow jet is listed as a 400F jet but is the correct length (28mm) as the 750 slow jet. Further research shows they are compatible. The link I posted says to trim down from 32mm, weird.
Thanks again Stu!

The #42 jet was listed for the 400F, because it was the standard jet for that bike. You'll understand how I figured out the part number for the oversize after you get a bit more familiar with Honda's part numbering system. The standard #40 jet for your bike is #99124-076-0400. To get the exact same jet in size 42, just change the last 4 digits to 0420. The link that says to trim the jet is selling aftermarket jets that fit a different application. They figure trimming can make them fit your application. Not good IMHO.


Stu

#42 jet means .42mm. Then go to Google and type in mm=inches you will then get the conversion to thousandths. So it has a hole in it .016 thousandths of an inch.

We were talking length of the jet (28mm vs. 32mm) previously. Maybe this got confused with size of the jet? Not sure. What would this conversion be useful for?

If you ever need to do the conversion without GOOGLE just remember 1"=2.54cm/25.4mm.

Thanks again

[DYSKORD]

Hey DYSKORD ; I've got a 76 with roundtops and I got my rebuild kits from these folks, http://olypen.com/retro/   . Price and shipping was great and after the rebuild I'm satisfied with the product they sold me and would buy from them again. Just my 2 cents.   ...cougar...

Hey thanks I am going to give them a call and find out who manufactures them. Not wanting to pull the carb rack again because of sub-par products. I found some Honda parts dealers who have pretty reasonable prices around what chickenman said so that is plan "A".

Thanks for the pointer

[grcamna2]

It's tough to beat O.E. Honda...they've lasted this long..and can usually be cleaned up to work a few more miles in a pinch .

[andrewk]

A motorcycle carb is NOT like a car.
When you take the carb apart it has brass jets.
The only part you really need is the float needles which has a rubber tip. Absolutely essential.  You do not need the seats unless it had all metal float needles. Switch those out for the more modern rubber tipped needles.
I am not even sure if the all metal needles are even available anymore.
There are no paper gaskets.
The float bowl gaskets almost never need replacing but are available separately.

If it has a accleerator pump circuit those parts are available separately.

AGAIN.... it is NOT like car parts world.

I would call the float bowl gaskets on a 750 "paper" as well as the top gaskets on the late 750 and the smaller SOHC fours. 

I rebuilt quite a few sets of carbs with the metal needle and brass seat this season.  So, the needle/seat assemblies are available.

I don't know of any sort of conversion to rubber tipped needles out there,  you have a source for these?  I'd be interested in buying some...

Most of the time, you can get away with cleaning all the brass bits up thoroughly, and replacing all the rubber bits (plus the float needles) with new, but I've seen wear on needles, and I've seen jets that cannot be saved.  I've rebuilt a lot of carburetors and have had virtually no problems with using aftermarket carb parts, but I have had a few issues here and there.  I usually don't use the needles, though, and I inspect the parts as I'm assembling the carbs.

Honda OEM parts are of much better quality- if you can afford them, it's the best you can get.