Author Topic: float bowl gaskets and cement/sealant (Read 10772 times)

mick750F · « **on:** November 10, 2005, 08:09:33 PM »

I'm re-assembling the carbs on my '78 750F and was wondering what gasket cement/sealant should be used on the float bowl gaskets. There was something there before, something sticky that stood up to Yamaha Carb Cleaner. It would make assembly easier if there was something holding them in place.

Mike

Bodi · « **Reply #1 on:** November 10, 2005, 08:58:37 PM »

Automotive weatherstrip adhesive. Loctite makes one that's yellow and works well.

eldar · « **Reply #2 on:** November 10, 2005, 09:10:00 PM »

Gee I just used super glue to hold them in place while putting the bowls on. Works fine and only needs to be used sparingly and will not clog lines and such as it will dissolve before flaking. My gaskets do not leak at all.

Einyodeler · « **Reply #3 on:** November 10, 2005, 09:11:51 PM »

I just use a dab of petroleum jelly on all 4 corners , it holds the gasket in place long enough to reassemble without squeezing any foreign matter into the bowls that can clog the jets.

TwoTired · « **Reply #4 on:** November 10, 2005, 09:25:00 PM »

I use a product called Gascacinch. It is non hardening and holds the gasket in place nicely for installation. Withstands gasoline and can still be cleaned off easily, if necessary, too.
Super glue is too hard, and labor intensive to remove. And, who ever works on it the next time will curse you as a one of those P.O.s we keep reading about.

My opinion, anyway.

Cheers,

Bob Wessner · « **Reply #5 on:** November 11, 2005, 03:14:03 AM »

I don't use anything, never had a problem. If the carbs are being reassembled, it suggests they are off the bike. Turn them upside down, lay the gasket in place and put the bowl on then snap the locking bail down.

mick750F · « **Reply #6 on:** November 11, 2005, 05:34:54 AM »

Quote from: Bob Wessner on November 11, 2005, 03:14:03 AM

I don't use anything, never had a problem. If the carbs are being reassembled, it suggests they are off the bike. Turn them upside down, lay the gasket in place and put the bowl on then snap the locking bail down.

Different carbs than yours Bob. These have a channel in the bowl that the gasket sits in. Also, the bowls are held on by three screws rather than a clip. The gaskets are just pesky enough to not sit in that channel properly.

Yeah, they're off the bike. I did a complete tear down, cleaning and rebuild. These carbs were fairly clean to begin with but there is no way they would have come clean without being completely disassembled. Especially the slow jets and all of the tiny passages in the jets and carb body. And it was definitely time for new o-rings.

Thanks to all for advice on this. I should have them back on the bike today.

Mike

Bob Wessner · « **Reply #7 on:** November 11, 2005, 06:10:47 AM »

Quote

[Different carbs than yours Bob/quote]

Sorry about that, didn't realize that end of the carbs were diff.

nubie · « **Reply #8 on:** November 11, 2005, 07:18:34 AM »

I rebuilt my 1975 750 carbs and did not use anything. Bowl gasket stays in place even when I take the bowls off.

eldar · « **Reply #9 on:** November 11, 2005, 07:43:55 AM »

Super glue chips off with little effort, but you have to have tried it to know this. It comes off way easier than any gasket compound I have tried. And if it does pose a small bit of trouble, a dremel with a wire wheel takes it off while cleaningthe seat for the new gasket. But again, you actually have to try it to know.

So you can keep using your weird named product I will stick with a 50 cent tube of super glue that has never leaked and never been hard to clean off.

Oh wait, I suppose if you saturate the area with the glue then it might be a pain, but if you only put on small drops and spread them out, you have just enough to hold the gasket. Again this is something you would actually have to try.
It is also a common trick used to seal cuts which can happen when working on your bike!

mick750F · « **Reply #10 on:** November 11, 2005, 10:10:22 AM »

Well it turns out that I ended up putting them in dry. It figures that the one I was messing with last night before posting this was the only one to give me any trouble. Three went in easy as pie, only #1 fought back. One thing I noticed which made it little pesky is that the #1 and #2 float bowls have four tabs in the gasket channel which kind of get in the way of the gasket. All I can think of is that they were part of the casting process. #3 and #4 bowls have no tabs and the gaskets set right in.

If anyone's interested the Honda part number for the '77-'78 750K/F carburetor "Gasket Set" is 16010-405-004. Good for one carb and includes...

1-carburetor cap gasket
1-pilot screw o-ring
1-accelerator pump o-ring
1-float bowl gasket
2-fuel tube o-rings
1-float bowl drain screw o-ring

If you do all four carbs there will be 3 accelerator pump o-rings and 2 fuel tube o-rings left over. I bought these a couple of years ago at the local stealership and paid around $23 each. I no longer do business with them but that's a different story. I'd look for them somewhere like servicehonda if I was buying again.

Mike

hymodyne · « **Reply #11 on:** November 11, 2005, 11:43:54 AM »

I wouldn't use any gasket sealant on the float bowls. I don't know anything about the product two tired references, and I have come to trust his recommendations on this site, so I'd say that if you use the product he suggests, you'll be allright.

gasket particulate tends to clog passageways and fuel jets as it is broken down by gasoline.

I use just enough super glue to wet the tip of a needle to prep the gasket channel on my float bowls at the four corners.

hym

eldar · « **Reply #12 on:** November 11, 2005, 12:14:04 PM »

Thats the amount I use too. Of course this is easier if the gaskets are already shaped! If they are regular round gakets, then you need a bit more.

mick750F · « **Reply #13 on:** November 11, 2005, 06:57:28 PM »

eldar..round gaskets? Are you using gaskets that aren't shaped to the bowl? Seems like that would be a total pain in the butt.

Mike

Buffo · « **Reply #14 on:** November 11, 2005, 07:56:36 PM »

I dont use any goo but I put the carbs set on its front side down...with the pilot screws down twards the table...put the gaskets in the groove ...this way thebowl in never upside down...then I lightly tighten the 3 screws...if any of the gasket is not in its seat I use a straightened paper clip to coax it....tighten 3 scerws...

Sam Green Racing · « **Reply #15 on:** November 11, 2005, 08:00:17 PM »

As well as magnificent you are wonderfull

what a guy.

eldar · « **Reply #16 on:** November 12, 2005, 11:19:51 AM »

Round gaskets are a pain,but they work. It is hard to find a gasket for a 78k that is not more expensive than living with a woman!

dusterdude · « **Reply #17 on:** November 12, 2005, 01:42:51 PM »

waaaaah

Buffo · « **Reply #18 on:** November 12, 2005, 04:29:28 PM »

I am not wonderful...or a good speller.

...hell...I am not really a nice guy...

But the fact that I could not gt bowl gaskets anyway but thru themail is why I have been reluctant to use any for of goo...I am still tuning" my carbs and I find myself in them quite often..I was worried that they mght get brittle and crack or other wise be rendered unusable..benching my bike until new ones arrive...i gues I coul have orderd more tha oneset...

cbxman · « **Reply #19 on:** November 13, 2023, 10:28:30 AM »

Quote from: mick750F on November 11, 2005, 06:57:28 PM

eldar..round gaskets? Are you using gaskets that aren't shaped to the bowl? Seems like that would be a total pain in the butt.

Mike

Yes pain in the butt is right. Thais why I'm looking at this thread. CB360 repair gasket Genuine Honda. Just round O ring
Cheers,

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Author Topic: float bowl gaskets and cement/sealant (Read 10772 times)

eldar

nubie

eldar

eldar

Buffo

eldar

Buffo