Total Motorcycle Community Forums

Just came a cross a good fix for those torn or cracked CV carb slide diaphragms.
So many people have been asking how to fix these even my self a few yrs. back asked the same question.

One thing people said to try was super glue which I did and it failed after a day or two.

Luckily I found a pair of new ones for $35.00 and my CB was back up and running.

Now it seems I can't find this deal any more.

I few weeks a go I picked up a 81 KZ440 LTD the bike was in real good shape and only 10K miles so for $50.00 home it came.

The only problem I found was one of the CV diaphragm in one carb was ripped so I decided to give it a fixing before attempting to find a new pair.

I had a bottle of glue that I used to repair torn carb to head boots that worked out very well (one yr. and still going).

So I thought what the hell give it a try.

"ELMERS PROBOND" Polyurethane Ultimate Glue

Put it over the cracked area both sides allowed to dry and tried it out.

It worked synced the carbs and it's held up for over two weeks now.

so for $3.00 U.S. at Wal-Mart it's worth the try.

Good Luck!

Mike

Wow !

So many views but no reply's in all this time.

People this has really worked over 2500 mile since repair and going.

Mike

well next time my carb diaphram breaks i'll try it

so did you glue anything over the ripped part? or is the glue just adhering the two sides of the rip together?

and if there were a hole in the diaphram .. would you just use a layer of glue to act as part of the diaphram or put some sort of rubber akin to the diaphram type over the hole?

I used only the glue and Just enough to cover the area of the tear on both sides.

When this stuff dries it's almost like a foam that’s very flexible.

I wouldn't try gluing any other pieces over the area as this will cause the diaphragm to be stiffer then the other and syncing them would be quite hard.

As for an update on the repair it's been a total of 3500 miles and I just checked the sync on the carbs and it's still holding strong.

We'll see how it really looks this spring when I remove the carbs to re-jet them for the exhaust system I'll be putting on.

Mike