[1950Mercury]

Looking for a center carb. for a 66 GTO tri power. Carb is 7026075. I need either a good carb a rebuilder or just the air horn. I have a complete carb but it leaks at the fitting. I changed the fitting and even double o ringed it and it still drips. I an thinking there may be a crack I can't see. I can get buy if someone has an air horn or tell me what other if any other horn will work.

[dhcarguy]

send your air horn to Mike at pontiactripower.com
Mike Wasson's #309-360-6385
He can fix yours

[GtoFM]

Contact John or Mike at pontiactripower.com . They can fix that with a threaded insert or sell you an airhorn if he has one in stock.

[1950Mercury]

Thank you. Is this kind of a common problem on these carbs? I've assembled many carbs. and this is a first for me.

[65 Lamnas]

Originally Posted by 1950Mercury

Thank you. Is this kind of a common problem on these carbs? I've assembled many carbs. and this is a first for me.

The float bowl and airhorn are cast pot metal. Threads strip from cycles and cross threading...pretty common for pot metal. Same problem on Q-jet inlet threads and needle/seat threads. If you've built many Quadrajets especially thru 1970 or so, you wouldn't be that surprised.

[1950Mercury]

Yes I have seen many Quadra jets striped. I've actually used the kit to repair them. This 2 jet don't show any signs of trauma. That's what's confusing.

[GtoFM]

The threads are not stripped but worn and stretched. pontiactripower.com charges $33 to repair, it's similar to a Helicoil. Go to the site and search 'thread' for the explanation.