Vintage and Classic Hondas

Carbs from '80 on a '76?

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VTMNG

Carbs from '80 on a '76?

Hey,
I'm needing new carbs for a '76 CB750 project. A buddy has some carbs off a '80 that he will give me a good deal on. The main thing I can tell by looking is that the '76 have the direct linkage so the throttle cable acts directly on the throttle valve in the carb, where as the '80 carbs are vacuum so the cable moves the butterfly valve that raise/lowers the needle.

Beyond that, does anyone know if the jetting would need to be changed? Are the airboxes and pipes the same pressure from 76 trough 80? If I have to do a rebuild and rejet kit than I'm not saving money on the deal.

Thoughts?

Thanks in advance.

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Re: Carbs from '80 on a '76?

Administrator

Putting the 80 model CV carbs on your 76 would be nothing but a huge headache. Just look around for a set of 70-76 round top carbs. You can get them for around $100.00. And rebuild them for less then $30.00. Also new carb boots, and clamps can be had if needed. The amount of work involved in swapping the CVs on, and rebuild costs would be much higher, and no counting for the time involved. Also most guys would like to put the 70-76 carbs onto their DOHC bikes. However if you want to be really cool check out the duel carb kit from Cycle-X.
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1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
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LukeM

Re: Carbs from '80 on a '76?

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Moving this post to a more appropriate area.

Luke M

Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.