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jubocu 11-03-2013 06:08 PM

Holley 4412 Carb
Anyone have good experience rebuilding these? (I'm going to guess yes). I've never rebuilt one. Finding walkthroughs or schematics are hard to come by. It seems like it should be straight forward. I can't even get the metering block off. It's like it's jb welded on. Does anyone have any hints or know of any links, suggestions, whatever that will help me out? Thank you.

jubocu 11-03-2013 11:03 PM

It seems like my main problem is that the gaskets have turned to glue. After I removed the four bolts holding the fuel bowl and metering block to the throttle body. After that even getting the fuel bowl off was a pain because the gasket between it and the metering block had turned to glue. Or someone had really used glue on the gaskets. This seems to be the same problem with the metering block. I don't want to get too rough with it because I don't want to damage the metering block or the throttle body. Anyone have any suggestions how I can get the metering block off? Is there something I can use that will dissolve the glue-like gaskets?

Skerr 11-04-2013 07:41 AM

Good carb. Very commonly used in roundy-round. 550(?) CFM. Had one on my 258, but it was too much. But I didn't rebuild it. Did you find it at the JY??

jubocu 11-04-2013 11:35 AM

A previous owner put it on. Seems like I'm the first one to rebuild it. It also seems pretty straight forward to rebuild. There's definitely some carbon and gunk build up but very little corrosion. If the metering block want stuck on there I'd probably have it rebuilt by now. I just don't know how to pry it off the throttle body without damaging one or the other or both. I know all that's holding it on is the gasket that turned to glue. Or is glue.

Skerr 11-04-2013 12:35 PM

I would try soaking it in some carb cleaner overnight. Maybe it will break it loose.

The time now is 01:35 PM.

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