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Author Topic: Carb's are finally done!  (Read 3679 times)

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Offline Blitzburgh207

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Re: Carb's are finally done!
« Reply #25 on: September 03, 2011, 05:30:25 pm »
Those carbs look awesome man.  Any idea what he used to clean them like that?
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Offline toytuff

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Re: Carb's are finally done!
« Reply #26 on: September 03, 2011, 07:02:09 pm »
Quote from: Blitzburgh207 on September 03, 2011, 05:30:25 pm
Those carbs look awesome man.  Any idea what he used to clean them like that?

Not a clue. He did tell me he had to soak number 3 carb three different times to get it clean. Had missing seals and other related issues from past owners trying to work on them. Did say they were dirty. Real dirty.

If I had to guess he had a lot of time in them. I'm satisfied and he will get my business again. Some things I'll work on myself but after seeing these he will get any future carb work. $125.00 was reasonable also.

tt
« Last Edit: September 03, 2011, 07:12:17 pm by toytuff »
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Offline Deacon Thunder

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Re: Carb's are finally done!
« Reply #27 on: September 05, 2011, 05:41:19 am »
Interesting read. I have PD41's on my 1977 CB750F. Been looking for an accelerator pump but have had no luck. Did the guy who rebuilt your carbs replace the accelerator pump on carb#2? And where did he find one?
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Offline cookindaddy

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Re: Carb's are finally done!
« Reply #28 on: September 05, 2011, 05:51:54 am »
I think Honda still has the accel pump. I remember getting a quote of about $50-60 but bought mine from these guys for $18 (Canadian):

http://www.vintagecb750.com/products/6/fuel-system (bottom of the page)

What they sent me works well.
« Last Edit: September 05, 2011, 05:56:06 am by cookindaddy »
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George with a black 78 CB750K (in Lion's Head, Ontario, Canada)

Offline toytuff

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Re: Carb's are finally done!
« Reply #29 on: September 05, 2011, 06:00:49 am »
Quote from: Deacon Thunder on September 05, 2011, 05:41:19 am
Interesting read. I have PD41's on my 1977 CB750F. Been looking for an accelerator pump but have had no luck. Did the guy who rebuilt your carbs replace the accelerator pump on carb#2? And where did he find one?

I had one already. I show PD 41B for the SS. PD 41 for K model.

Should be able to find one. According to my parts fiche 16021-393-004, diaphragm set,pump. Same number for K and F model.

tt
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Offline Deacon Thunder

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Re: Carb's are finally done!
« Reply #30 on: September 05, 2011, 04:29:00 pm »
Quote from: cookindaddy on September 05, 2011, 05:51:54 am
I think Honda still has the accel pump. I remember getting a quote of about $50-60 but bought mine from these guys for $18 (Canadian):

http://www.vintagecb750.com/products/6/fuel-system (bottom of the page)

What they sent me works well.

I check their site and they are out of stock same as CB750 Supply. You must have beat the tragedy in Japan with your order...I guess?
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Offline toytuff

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Re: Carb's are finally done!
« Reply #31 on: September 08, 2011, 12:07:11 pm »
Well guys I finally mounted the carburetors, installed new cables, polished the clamps and installed new OEM screws.  :)

Started to get a little warm in the garage so I'll hold off on setting the tank on her and throwing some fresh fuel in.

Pretty excited about getting this old girl running again.  8)

tt


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Offline bjatwood

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Re: Carb's are finally done!
« Reply #32 on: September 08, 2011, 12:12:03 pm »
If it runs as good as them carbs look, you are gonna be one happy Guy!
They look great  8) 8) 8) 8) (one cool smiley face for each carb)
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Offline toytuff

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Re: Carb's are finally done!
« Reply #33 on: September 08, 2011, 02:50:21 pm »
Quote from: bjatwood on September 08, 2011, 12:12:03 pm
If it runs as good as them carbs look, you are gonna be one happy Guy!
They look great  8) 8) 8) 8) (one cool smiley face for each carb)

LOL. Yeah, it fired on ether but other than that who knows how long it's been.  ::) Last license plate was California, 2008. Valves are lashed, points checked, plugs are new and set.

Good to go! (I hope)

tt
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Offline toytuff

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Re: Carb's are finally done!
« Reply #34 on: September 12, 2011, 09:37:11 am »
Got the old girl running yesterday. A few issues yet to resolve.

When you apply the throttle it appears gas is running out the float bowl of number two (2) carb. I would think the float would keep gas at a certain level. Might be the accelerator pump seal leaking and filling up the float bowl.

Looks like I'll try to remove the bowl without removing carburetors.  ::)

I've done a couple of searches on the noise these things put out. They do make a lot of racket it appears. The clutch did quiet down but the transmission does make some noise.

I'll get the leak fixed then do a carb sync as suggested here.

tt
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Offline flybox1

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Re: Carb's are finally done!
« Reply #35 on: September 12, 2011, 09:51:21 am »
Quote from: toytuff on September 12, 2011, 09:37:11 am
it appears gas is running out the float bowl of number two (2) carb. I would think the float would keep gas at a certain level. Might be the accelerator pump seal leaking and filling up the float bowl.

only when you apply throttle?

i'd try tapping on the bowl with the plastic end of a screwdriver to "unstick" the float. 
its a scientifically proven method to fixing overflowing carb bowls when floats have been accurately set  :P
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Offline toytuff

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Re: Carb's are finally done!
« Reply #36 on: September 12, 2011, 10:28:06 am »
Appreciate the tip. Didn't work.

When the fuel is "on" with ignition "off" you can twist the throttle and see fuel coming out the front of the float bowl. (side facing air cleaner) It is not the fuel line.

If I remember correctly there is a small "o" ring that sits in number two (2) carburetor.

This would explain the "stumble" off idle. Accelerator pump is either dumping to much fuel or not enough. I would think the later.

tt
« Last Edit: September 12, 2011, 10:33:44 am by toytuff »
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Offline toytuff

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Re: Carb's are finally done!
« Reply #37 on: September 12, 2011, 11:00:52 am »
"UPDATE"

Well, things usually don't go easy for me. Today was different.

I backed off the float bowl screws. Two of them since you can't reach the other. I snugged them back up. Not super tight. Just snug.

No longer leaking fuel!  8) Still has a stumble off idle. Maybe a sync will do it.

Thanks for the replies.

tt
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Offline toytuff

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Re: Carb's are finally done!
« Reply #38 on: September 12, 2011, 11:44:16 am »
Quote from: toytuff on September 12, 2011, 11:00:52 am
"UPDATE"

Well, things usually don't go easy for me. Today was different.

I backed off the float bowl screws. Two of them since you can't reach the other. I snugged them back up. Not super tight. Just snug.

No longer leaking fuel!  8) Still has a stumble off idle. Maybe a sync will do it.

Thanks for the replies.

tt

Spoke to soon. Leaking again. Guess I'll take them off again.  >:(

tt
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