Holley Carb. 3367

[Nick L.]

Re: Holley Carb. 3367

You are probably on the right track already, however I thought I would mention that I have had the crimped-in plugs leak on the 3367 from my 66 L-79 before. The only fix for this is replacing the bowl itself. I've seen them epoxied over but this is a temporary "fix" at best.

[Matt B.]

Re: Holley Carb. 3367

Nick, Can you clarify "crimped in plug"?
Thanks,

[Nick L.]

Re: Holley Carb. 3367

Mike,

In the photo of the open end of the bowl, the plug I am referring to is 90 degrees relative to the hole that receives the crossover tube. If the carb were assembled on the engine and you were staring into the engine compartment from the driver's side, you would see this plug and the corresponding plug on the primary bowl.

The plug closes the passage that is drilled in the bowl to communicate the crossover tube inlet to the float valve.

These will cause a mysterious leak that seems to be coming right through the metal itself.

The only solution is a replacement bowl. Gasoline has extremely high wettability and will flow through some incredibly small passages.

[Albert P.]

Re: Holley Carb. 3367

Unless the needle tip is badly worn and not seating properly a good clean-up should only be required.

[Matt B.]

Re: Holley Carb. 3367

Mike,

In the photo of the open end of the bowl, the plug I am referring to is 90 degrees relative to the hole that receives the crossover tube. If the carb were assembled on the engine and you were staring into the engine compartment from the driver's side, you would see this plug and the corresponding plug on the primary bowl.

The plug closes the passage that is drilled in the bowl to communicate the crossover tube inlet to the float valve.

These will cause a mysterious leak that seems to be coming right through the metal itself.

The only solution is a replacement bowl. Gasoline has extremely high wettability and will flow through some incredibly small passages.

Nick, Now it makes sense. I ordered a rebuild kit so I guess I won't find out if it's the plug until I get the carb back together. Thanks.

[Matt B.]

Re: Holley Carb. 3367

Unless the needle tip is badly worn and not seating properly a good clean-up should only be required.

Albert,
I need new gaskets anyways so I thouight I would replace the needle valves too. They come in the kit. Next time I'll know. Thanks,

[Matt B.]

Re: Holley Carb. 3367

Finally recieved my rebuild kit Friday. I completely took apart the secondary side of the carb, cleaned all the parts, replaced all the gaskets, installed the new needle and seat, installed new o-rings on the feeder tube and the car started right up. I adjusted the float until fuel stopped pouring out the overflow hole. Took for a test drive and success. No leaks! I appreciate all the help I got to resolve my problem. I think I used a little advice from everyone of you that responded.
Last fall I started hearing popping and/or backfiring when downshifting. The rebuild seemed to fix that problem as well.

Thanks,