Set of '78K carbs "Keyholes" sell or trade $65+shipping *SOLD*

[shinyribs]

Complete set off of running bike.Sitting for 10 years. Will need gone through. Sell for $65 + shipping or trade for good set of equal roundtops( complete but rebuildable)

[Lucky 1]

See the return spring? That is one way you can tell they are 1978's other than the accelerator pump feature.

The 1977's have a different return spring but not the coil type, and the 1976's have the return spring in the center like it should be,(non coil) type.

Here is the great ones. 1969-70

[Lucky 1]

Those carbs are a good deal for someone!!!

[shinyribs]

I always thought the 69-70 carbd were exactly like my '76 roundtops except for the cables coming out of the top vs. my forks and lift bar setup(not sure what it is called). But I dont remember that big silver plug/screw??? in the side of mine.Wonder what it does?

[seestheday]

Very interested at that price.  Anyone know if these will work reasonably well on a DOHC?  I'm assuming that running these would make pods much easier than my CV carbs.

[Hellbilly429]

Tools had said before that the older carbs would work on our DOHC, just would have to adjust the spacing in between the carbs so they line up properly.

[Piute]

                                                I knew your bike was 1yr diff.
                                                   but thought older,
                                                new had the same as mine,

                                                            Trade
                                                Whats on your mind
                                                         or looking for
                                                               

[shinyribs]

I thought the dohc 's had larger intake boots than the sohc 's?  

[seestheday]

I could always fab a manifold to make it fit, but I'm doing a little research and am now not to sure it is a good idea.

Sent from my BlackBerry device on the Rogers Wireless Network

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From: "shinyribs [via Honda CB750'S]" <[hidden email]>

Date: Sat, 2 Jun 2012 14:43:40 -0700 (PDT)

To: seestheday<[hidden email]>

Subject: Re: Set of '78K carbs "Keyholes" sell or trade $65+shipping

I thought the dohc 's had larger intake boots than the sohc 's?  

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NAML

[Racingrobby]

I know I'm replying to an old message . I was going through  some back messages. I was thinking the same about using old carbs on the dohc . I'm getting so sick of these cv carbs.  Well a lot is my fault because I cleaned the carbs ( every little hole 3times ) before I put them together . But when I cleaned the tank I didnt do it right and got flash rust. So I had to clean the carbs again. I need to find a good jet combo for the kerker exhaust that is drag pipe.  ( anyone have a good suggestion for jets ????).  Sorry, alot said there.  I guess I don't want to give up on the cv carbs and let them beat me up.

[bomber737]

for what it's worth I was told by the hold hippie mechanic I use as a brain trust that the DOHC bikes are better off using the stock jetting and using exhaust that gives the stock back pressure.  I did this to my 81 cb750F Supersport and it runs great.  I have 100 mains in it with a stock airbox and I have an annoying burble at 75mph and a certain throttle position.  The book callsW942F for a 97.5 so I got 98's since thats what the Honda dealer can get.  I am planning on putting them in next time I pull the carbs.  I had 102's in it and they were certainly too rich, thing bogged badly.

[seestheday]

Ya, pretty much zero chance of me spending $600+ on a new exhaust to match the back pressure of the stock exhaust.  I have a 4-1 no name headers/exhaust that a PO put on.

I just rejetted to a bigger idle jet (up to a #75 from the #68 stock) and it runs like a dream.  The PO already had bigger main jets (#105's) and they seem to be working great as well.  When I had the #68's in I had to have my air/fuel screws out 4.5(!) turns to run at all and it was still running lean.

[shinyribs]

These carbs are SOLD.