I've read a few posts that suggest it's possible to replace the stock carburetor on my '78 Honda Express with a more reliable carb. I have an intake adaptor (19mm), so theoretically I can mount a new PHBG carb, such as Dellorto's. But there seem to be a lot of options for size/style depending on what kind of performance one wants. I don't need more speed, just something that's more reliable and easier to keep tuned. Basically just a replacement, as close as possible to the original. Any suggestions for which carb would be a good choice? Also, can I just replace the carburetor for now without messing with the exhaust or oil pump? Thanks!
78 Honda Express carb substitute
Re: 78 Honda Express carb substitute
What problems are you having with the stock carb?Idle issues?
Re: 78 Honda Express carb substitute
Well, the bottom bowl is all cracked up--overflow stem broken off--so I need to replace that anyway. Getting it to both idle smoothly and run smoothly at high end has been a challenge. It just seems to require an inordinate amount of fiddling. Otherwise it works, but I'm just curious about alternatives. Anything gained by switching to non-stock?
Re: 78 Honda Express carb substitute
Yeah better takeoff,more speed.Iam running a cheap 20mm carb off ebay that was under $30 shipped on my 78 nc50.I had to make a short adapter to bolt it to stock intake that I dremeled out bigger to match the carb.I have a bunch of bowls if you just need a new bowl.
Re: 78 Honda Express carb substitute
Thanks Eric. I'd love to get the stock carb in working order, even if I eventually decide to go with another kind. Can you email me a price for a bowl? travkoch@gmail.com
Re: 78 Honda Express carb substitute
Travis,
Do a research on older posts.
This problem has been solved way back in Sept 2011....or privately before.
'' ...As for the intake, the following intake adapter, coupled with a Mikuni Vm16 will fit without any major modifications. (a bit of shimming here and there--minor)
You can also keep your stock air filter box.
Garelli VIP polini 19mm shorty PHBG intake
https://www.treatland.tv/garelli-VIP-shorty-PHBG-intake-p/garelli-polini-intake-215.0280.htm....'';
A big improvement over the original carb.
I've been running this carb for about 1k miles now and haven't ran into no problem yet.
....more expensive than $30 though.
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