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Re: gas pool in secondary carb
Posted by: gerg ()
Date: March 20, 2023 01:51PM

Feel like I experienced all of that Dave!

I just had a SUCCESSFUL hot start 1 hour after the fact.

That is a FIRST with this engine.
I’ve been fighting this since break-in when the engine was on the ground.

Stoked!!!

gerg
Monroe, LA


Current cars and other fun stuff -> [gregblakeney.smugmug.com]

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Re: gas pool in secondary carb
Posted by: vairTer ()
Date: March 26, 2023 09:16PM

I'm still wrestling with flooding of my carburetor.

To fix the problem, I replaced the needle and seat with a kit from Clark's, and readjusted the float. This did not fix the problem, so I'm beating the bushes to find the problem.

The kit from Clark's came with 2 gaskets in the shipping bag, along with a couple of clips that weren't associated with the old parts. Can anyone explain why there are 2 different thickness gaskets and what the clips are for?

1966 140 Monza PG convertible
Ventura County, CA

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Re: gas pool in secondary carb
Posted by: vairTer ()
Date: March 26, 2023 09:23PM

here's the pic of the kit contents...

1966 140 Monza PG convertible
Ventura County, CA

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Re: gas pool in secondary carb
Posted by: vairTer ()
Date: March 26, 2023 09:27PM

I also tested the electric pump pressure and it is 4psi. No leaking from the other 3 carbs.

1966 140 Monza PG convertible
Ventura County, CA

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Re: gas pool in secondary carb
Posted by: vairTer ()
Date: March 26, 2023 09:31PM

and float doesn't sink in water...

1966 140 Monza PG convertible
Ventura County, CA

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Re: gas pool in secondary carb
Posted by: joelsplace ()
Date: March 26, 2023 11:11PM

You use the different gaskets to get the float tang perpendicular with the tip of the needle. If it hits the needle at an angle it puts a side load on it and can make it leak. Sometimes you have to stack gaskets. No need for the clips.

Joel
Northlake, TX
5 Ultravans, 145 Corvairs and counting...

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Re: gas pool in secondary carb
Posted by: RobertC ()
Date: March 27, 2023 01:12PM

OK, I keep staring at your pic - trying to figure it out.

My old eyes see a "tube" across the throat of the top.

My secondary tops do not have this "tube"?

Grasping at straws:

Have you checked the top with a straight edge to see if it is warped?

Years ago, my feeble memory recalls a thread (Coventuredave?) discussing the base of venturi clusters being warped?

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Re: gas pool in secondary carb
Posted by: RexJohnson ()
Date: March 27, 2023 03:52PM

The secondaries with the lock out have that tube.

RJ tools
Salem,Oregon

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Re: gas pool in secondary carb
Posted by: vairTer ()
Date: April 03, 2023 09:18PM

OK, the resolution to the venturi dribble problem.

I talked to Corventure Dave in person and got his advice. I put a kink in the float spring to increase sealing force and increased the float height adjustment from 1-1/16" (the manual value) to 1-1/8".

This cured the bowl overflow problem. A road trod by many a Corvair owner...

Thanks again to Dave and to others who offered advice in this thread.

1966 140 Monza PG convertible
Ventura County, CA

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Re: gas pool in secondary carb
Posted by: corventure Dave ()
Date: April 03, 2023 10:40PM

Ay VairTer,
Absolutely my pleasure. I'm glad it was a easy fix. May I recommend that when you have time, to also check and adjust the other 3 float springs.
Time to get out and enjoy that Corvair. smileys with beer

Corventure Dave

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