Author Topic: Float gasket uhh help  (Read 2368 times)

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Offline Mavryk03

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Float gasket uhh help
« on: September 08, 2010, 06:21:50 AM »
OK guys need some help! I just rebuilt my carbs on my 75 CB550F and got it all back together and started up ran fine, then let it set for a week or so while i was working on some other stuff went to start it the other day and it started and ran for about 5 secs and shut off. So i figured i forgot to flush the fuel lines after i installed a filter in the gas tank so i got rust in the carbs again so took everything apart last nite clean it all up ran air through everything and started to put everything back together. So here is my problem the rubber gaskets on the float covers seem like that have been stretched out and bigger then they were before, they are new just bought them from bikebandit, b/c they were already a pain in the a$$ the first time putting them on  >:( , so didn't know if there was a way to get them back on the float cover by maybe giving them a little heat to shrink them or do i need to buy new ones dint really want to buy new ones and spend another $60-$70 dollars so if anyone has any tricks that would be great thanks guys
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

Offline Skunk Stripe

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Re: Float gasket uhh help
« Reply #1 on: September 08, 2010, 06:24:37 AM »
Were they round by any chance? I had to get round ones and they are the biggest pains to use. I ended up using model grade super glue sparingly in the gasket groove to hold it down.

Offline flybox1

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Re: Float gasket uhh help
« Reply #2 on: September 08, 2010, 06:41:37 AM »
they've swelled..  happens when they come in contact with fuel.
let them dry them out. they will shrink back to normal  ;)
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

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1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Mavryk03

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Re: Float gasket uhh help
« Reply #3 on: September 08, 2010, 06:48:21 AM »
Skunk Stripe, yeah they are rubber and round it's like they were just alittle too big in the first place but they fit  ???. FLYBOX 1 yeah i though about that too the the fuel had made them swell alittle i laid them out last nite to dry so how long should i let them dry? thanks for the info guys ever little helps  ;D
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

Offline flybox1

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Re: Float gasket uhh help
« Reply #4 on: September 08, 2010, 06:51:15 AM »
over night should do it, but if you've got a heat gun, it might help.
i resorted to cutting mine to fit and glueing w superglue. no probs in a more than a year.
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Mavryk03

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Re: Float gasket uhh help
« Reply #5 on: September 08, 2010, 06:59:15 AM »
OK i figured over nite would do it, and someone else told me about cutting them but i was like wouldn't the fuel leak out where you cut it them didn't say anything about super gluing them if the other way doesn't work i might have to cut them and glue them thanks again
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

Offline BobbyR

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Re: Float gasket uhh help
« Reply #6 on: September 08, 2010, 09:20:57 AM »
You can glue those gaskets to the bowl using clear nail polish.
Dedicated to Sgt. Howard Bruckner 1950 - 1969. KIA LONG KHANH.

But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?

Offline Mavryk03

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Re: Float gasket uhh help
« Reply #7 on: September 08, 2010, 09:47:37 AM »
nail polish really that, it wont eat the rubber away will it?
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

Offline BobbyR

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Re: Float gasket uhh help
« Reply #8 on: September 08, 2010, 10:10:27 AM »
nail polish really that, it wont eat the rubber away will it?
No, just brush some in the groove and push the gasket down until it dries and u are done..
Dedicated to Sgt. Howard Bruckner 1950 - 1969. KIA LONG KHANH.

But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?

Offline Mavryk03

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Re: Float gasket uhh help
« Reply #9 on: September 08, 2010, 11:56:00 AM »
sounds good and cheap thanks alot i will give it a try.
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

Offline flybox1

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Re: Float gasket uhh help
« Reply #10 on: September 08, 2010, 11:58:41 AM »
BobbyR's tips are as worthy as his avatars  ;)
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Mavryk03

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Re: Float gasket uhh help
« Reply #11 on: September 08, 2010, 12:24:40 PM »
i would agree hopefully for him, that is his GF ;D if not she is nice to look at
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

Offline flybox1

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Re: Float gasket uhh help
« Reply #12 on: September 08, 2010, 12:52:28 PM »
i would agree hopefully for him, that is his GF ;D if not she is nice to look at

 :D if it was, he's got a new one every few days  ;)
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline c(b)hris

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Re: Float gasket uhh help
« Reply #13 on: September 08, 2010, 12:59:10 PM »
I put mine in a pot of boiling water for about a minute and they shrunk back to their original size immediately.
75 CB550
74 CB750

Offline BobbyR

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Re: Float gasket uhh help
« Reply #14 on: September 08, 2010, 04:19:50 PM »
i would agree hopefully for him, that is his GF ;D if not she is nice to look at

 :D if it was, he's got a new one every few days  ;)

My Wife is hot, but I do not change them every weekend. I am getting on in years and any of these babes would kill me.   
Dedicated to Sgt. Howard Bruckner 1950 - 1969. KIA LONG KHANH.

But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?

Offline Mavryk03

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Re: Float gasket uhh help
« Reply #15 on: September 09, 2010, 11:32:46 AM »
I put mine in a pot of boiling water for about a minute and they shrunk back to their original size immediately.
i will have to give that a try as well thanks
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

Offline Mavryk03

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Re: Float gasket uhh help
« Reply #16 on: September 09, 2010, 11:35:45 AM »
i would agree hopefully for him, that is his GF ;D if not she is nice to look at

 :D if it was, he's got a new one every few days  ;)

My Wife is hot, but I do not change them every weekend. I am getting on in years and any of these babes would kill me.   
if your wife is hot as well you need to put her pic up there ;) she prob kill you wouldn't she :D
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

Offline Mavryk03

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Re: Float gasket uhh help
« Reply #17 on: September 13, 2010, 08:55:14 AM »
thanks guys got them back in just let themn dry out got eveything back together and slapped the carbs back on got it running then fuel was linking out of the top of the bowls. it is an ongoing process >:( but i will get it to work  ;D thanks again
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

Offline flybox1

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Re: Float gasket uhh help
« Reply #18 on: September 13, 2010, 09:14:06 AM »
fuel would leak out the oveflow tubes before it hits the top of the bowl.
you might have something else going on there with your float height, or fuel valves.
tip: next time you turn on your fuel to fill your bowls, have a chunk of wood or a rubber mallet handy.  (gently) tap/hit the sides of your bowls to release the floats. sometimes they stick in the 'down' position.
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Mavryk03

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Re: Float gasket uhh help
« Reply #19 on: September 13, 2010, 10:14:01 AM »
i will check that out today when i give her a start let you know thanks
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

Offline Mavryk03

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Re: Float gasket uhh help
« Reply #20 on: September 15, 2010, 08:03:41 AM »
hey flybox 1 so took the carbs off again and check everything took off the float bowls and let the gaskets dry out a day or so and put everything back together and no fuel was leaking out anywhere the floats were dry all around and no fuel coming out of the over flow. So starting checking everything when i turned the fuel on and if your sitting on your bike the 2nd carb from the right side was not filling with fuel so i gave it alittle tap and opened the screw on the bottom of the float bowl and nothing so i keep tapping it finally got the fuel to run in there, so now i have fuel have spark and air and it wont start now  ???. It keeps turning over and over and gets little burps like it wants to start and then wont so i just can figure it out. I do have air pods,got rid of the air box so don't know if that would be a problem? Also took off one of the air pods the first carb on the left side and put the palm of my hand over it and tryed to start it and it was sucking my hand so when i took it off fuel was all over my hand and in that part of carb so don't know what that means if anything. Thanks for all your help so far
Matt
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

Offline flybox1

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Re: Float gasket uhh help
« Reply #21 on: September 15, 2010, 08:10:52 AM »
sounds like you had a stuck float/float valve on #3.  but you got it to fill.  good.  :)
have you done valve clearances, and set timing?
got a fully charged batt?

what height did you set your floats at?
should be at 22mm, with AF screws at 1.5 turns out.

needle position might need adjustment because of your pods. 
(tuning carbs to pods is not my cup of tea, so hopefully others will chime in with suggestions)
« Last Edit: September 15, 2010, 08:20:11 AM by flybox1 »
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Mavryk03

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Re: Float gasket uhh help
« Reply #22 on: September 15, 2010, 09:07:42 AM »
yeah the battery was full  ;D but started to die since i was craking on it i do have it on a charge thow, i will have to check with my buddy for the valve clearances, and set timing and height of the floats he did all that for me while i working on something else will get back to you thanks for the help.  :)
Avi: why do they call him boris the bullet dodger?
Bullet tooth tony: Cause he dodges bullets Avi
Got to love Snatch lol

bollingball

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Re: Float gasket uhh help
« Reply #23 on: September 15, 2010, 09:20:25 AM »
22MM really?

Offline flybox1

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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"