Bogging around 3000 RPM
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Burning Brakes
Joined: Mar 2016
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Thanks for the help so far!
Race Director
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From: Corsicana, Tx
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Thread Starter
Burning Brakes
Joined: Mar 2016
Posts: 1,008
Likes: 163
I THINK I may have found the problem... decided to take the top of the carb off again to check everything (specifically my float level). Took out the primary rods and.... one of the primary rod tips is bent?! not sure how it happened, must have somehow come unseated from the jet. Tried to straighten it out and of course it immediately broke off... new rods ordered. Will report back later next week when they come in if that fixed the problem.
Race Director
Joined: Jan 2000
Posts: 13,018
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From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
That could do it if it jammed things up.
Plus it would put a lot of fuel in for sure!
JIM
Plus it would put a lot of fuel in for sure!
JIM
Le Mans Master
Joined: Jul 2006
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From: charlotte north carolina
It's very easy to bend the tips on Qjet primary rods when the top casting is seated. You have to make sure the rods are properly inserted in the jets before the top is positioned, and then you have to use a thin flat chisel to hold the gasket (and rod hanger) in place as the top is seated. How much was the tip bent? If it was only distorted slightly, the mixture wouldn't be extremely incorrect. The rod would be pushed to one side, but the total area of fuel passage would still be reasonably close. If the tip was doubled back on itself, the two rods may have been jammed into one position. But if that were the case, your throttle response would be terrible over all RPM ranges. If the bent rod was not jammed, the idle and part throttle A/F ratio would be lean, but only be the area of the .026 tip. The WOT A/F ratio would be rich by the same 026 amount. I still think the secondaries were locked out.
BTW, all the rods being sold now have .036 tips, not .026. That will lean the mixture at WOT. Your best bet is to buy a rod from a private seller that has an assortment of parts, not a supply house.
BTW, all the rods being sold now have .036 tips, not .026. That will lean the mixture at WOT. Your best bet is to buy a rod from a private seller that has an assortment of parts, not a supply house.
Last edited by jnb5101; May 27, 2016 at 08:16 PM.
