I just purchased a 76 750A off of E-Bay with 10K miles. I have not received or seen the bike but am planning my attack. My order of attack is: - check...
Kirk, Sounds like a good plan of attack. Let me add a couple of things. check operation of petcock, watch for leaks - check carbs for leaks in float...
I am new to posting on these boards - so not certain how to proceed. I have trimmed the prior posts. What are the "carb boots" you are referring to? Are they...
Ken, The "boots" are the rubber hose like things in between the head and carbs. They are rubber and are supposed to be soft and pliable, but after 30 years...
Paul, If the boots are 30 years old and no longer available then that seemes to be a market opportunity for someone. I see about 3 CB750A's on E-Bay at all...
I read somewhere, maybe in this group that the MPG for his bike was 33. Is that a reasonable number. That seems incredibly low to me. I would expect it to...
Ken, The longer a person works on these old bikes, the more he will love (or hate) them. There is actually 2 issues with the boots. Honda, in all their wisdom,...
Ken, The gas mileage on my cb650 is in the high 40s, my cb550 gets about 35mpg, my Gl1000 gets 45 and up, the matic gets 34. The auto trans sucks up some of...
...a properly tuned SOHC 750 should get around 40-45mpg... J. Mark Locklear (225)803-2302 -Philippians 4:13 "One machine can do the work of fifty ordinary men....
My 77 750 hondamatic fall into this range. I drive it to and from work on a daily basis. I have never tested the mileage on a trip. On a full tank of gas I can...
If I plan on touring, would it make sense to change the sprockets to reduce engine RPM? Would lower RPM equate to higher MPG? Ken ... 35mpg, my Gl1000 gets 45...
Ok, I got it. The boots are not straight hoses rather, the ends have different diameters. What are the diameters? Maybe a thin walled reducer out of aluminum...
Yes the hoses are not straight and the ends are different diameters. The different sizes could be corrected with some sort of sizing bushing, but the harder...
...yes, I your can play with gearing and squeeze another 5+ MPG's. One gentlemen on the SOHC board swore he was getting upward of 70mpg after some radial...
I've always figured that the engineers that designed these bikes tried to get as much fuel economy out of these bikes while still making them rideable by most...
I have been playing with the idea of making new boots using high temp RTV silicone inpregnated into fibreglass cloth. The biggest hurdle would be making the...
I don't know the specs on the boots so it is hard to guess whether it would work but from the pictures I have seen it appears that the boot has a 5-8 degree...
I have been through all of the past posts looking for information on a rich run. Most, if not all, are for lean situations. I have had the carbs off, and...
Frank, I had a similar problem with a 550F. In fact that's the reason I got it. The po had done everything he could think of and then gave up. I tried...
Look at CB550 boots. The 750A carbs have a smaller opening and I used a set of 550's to hold me over while I was rebuilding my '77 750A Michael Smegielski...
Does anyone have CB750A boots that are no longer useable? Would you be willing to donate them to the cause? I would like to have a couple of them - cracked,...
Anyone about to embark on this journey would do well to join the Yahoo Honda CT90/110 'Trail 90' group and read back on all the stuff a guy named David...
How well did the boots fit the spigots on the head? Was it completely acceptable to continue to use the 550 boots? What did you do on the 750A after the...
Paul, I've been through all of the jets and needles, thinking the same thing. I was just sure that the PO had made some critical error in a rebuild or just...
Did you check the inside of the emulsion tubes? I used a small flash light and could see that the inside was corroded to the point that it was all pitted. New...
Paul, are you referring to the needle jet holder? On the last cleaning, I did make sure that every tube, port or opening I could inspect was clean, clear and...
Yes, the jet holder and emulsion tube is the same thing on these carbs.Air is mixed with the fuel in the tube and causes the mixture to vaporize easier as it...
Thanks for the response. This one does not have a horn in the Vetter. Horn is mounted on the crash bars, seemed to be stuck off. When testing in the...
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