Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

Frankencarb?

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Shiny:
Thanks again Kenth

Understood about going to a weaker spring in the power piston.  I can do that.

The rest I will leave as-is.

Greatly appreciate your help.

Mike

Shiny:
Cliff and others have warned about leaving an "extra" gasket below the inlet seat.

Please look at the image and interpret.  I think there may be a metal washer but if there is, it is stuck good, possibly by corrosion or got swaged by bead blasting.

Does this look like there's a washer or not?  I think the depth of the seating surface below the casting surface would be the best indicator but I have nothing to compare with.

If this looks "wrong", and there is indeed an extra gasket or washer in the body, how do I get it out?  Can I just whack it with a hammer and punch?  I'm obviously reluctant to do that if the sealing surface is good.

Thanks,

Mike

Kenth:
It looks like remnants of a gasket remain.

Shiny:
I ran a sharp stylus around it and created or at least emphasized the groove you highlight but I do think there is a steel washer stuck there...  I will find a small magnet.

Was there a steel insert originally or is this likely a "gasket" that got left by the rebuilder?

Can anyone share a photo of this same inlet bore and seat from the same vintage carb?

I'm concerned about damaging the carb if I try to pull it out.

I'm also concerned about the remaining sealing surface if I do get it out.

The seat was sealed against this with a new gasket and did not leak.

If I leave this "assumed" steel washer in place and use a new washer on top, I think it will raise the height of the needle and seat.  Is this going to cause any issue?  I was able to set the float height and the needle and seat were verified before I removed them, so I"m not sure there is a strong motivation to risk damaging the carb.

Thoughts?

Shiny:
The washers are aluminum so can't detect with a magnet.  I decided to leave it alone and had no problem getting the new needle and seat to seal.  I still don't know if there was an old washer but if so, it did not cause the float to interfere with splash filler nor cause any problem I could detect.

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