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Sugestions needed. Carbs or other ?

  • Thread starter Thread starter Sand_fiend
  • Start date Start date
S

Sand_fiend

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So i have rebuilt these carb's three times. im guessing at this point it's still the carbs. I have pods on it right now because i don't and have never had the stock air box so i cant try that at this point.. I had 29 smoothbores on it before but they diapered over the 25 years it sat.

The bike will now idle all the way down to 500 rpm since i found the three plugged air ports.
the bike on the rack will rev to 10.000+ rpm fine every time i twist the throttle. But, riding down the road it runs and pulls untill you get to 6000 rpm and then it feels like you hit a rev limiter and will not go past that point under load.

it has 45 pilots and 125 mains.

Yes i know you should not use pods on these carbs, but its all i have right now.
The valves and timing are on mark.
Strong Spark. "electrical pick up."

Could resister plugs be the problem ?
What else should i be looking at ?

I have a set of 26 mm stock 79 carbs im going to clean and put on to see if it will get past that point.
I have a old set of 26mm boots. i cut the ends of the boots off and made them into a spacer between the 26mm carbs and the 32 mm CV boots.
Its a nice tight fit.
I dont want to have to buy carbs unless i have to, and have exhausted all other options..

This is a 635 big bore with cams and other related parts.

Thanks, Phil
 
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You may not want to hear this but the most likely culprit is the pods. If you can source a stock airbox, then at least you will have something to establish a baseline against. Failing that, I suppose you can try going up on the main jets. What do you have for an exhaust?
 
Sorry.. LOL... its a 1979 gs550e. 635 kit with cam's. Cams degree'd, valve springs, lite porting. it use to run with this setup but it had 29 smoothbores back then.. I only have a set of 1980 CV carbs and a set of stock 26mm.
 
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