Venting oil cap breather to filter housing 327

Lucas660 wrote: I had exactly the same problem. Drilled and tapped to plug it. I used M8 but 5/16 unc would work. The pipe for the old choke has obviously burnt through. I think you can replace it but if you are not using it there is no point.

trewyn15 wrote: I used JB weld and filled it in.  Working fine still at this point.  That being said, if you had to drill it on the car, it's on the exhaust side of things, so chances of it spilling into the heads or something are highly unlikely.

trewyn15 wrote: dogbone wrote: trewyn15 wrote: I used JB weld and filled it in.  Working fine still at this point.  That being said, if you had to drill it on the car, it's on the exhaust side of things, so chances of it spilling into the heads or something are highly unlikely. I wondered about JB Weld. Wasn't sure how it would hold up to a lot of heat, gets pretty hot in this location. I only ran it a couple of minutes so I could put my finger over the hole to determine how much exhaust was coming out, and it got too hot to touch. I would just let it sit for a couple of hours before you drive it.   I've put probably 1,200-1,300 miles on my car since I put the JB weld in it and it worked just fine.  Plus, it takes almost no time :)

JB weld will work. I would definitely remove the intake to drill/tap, and clean before refitting. Not worth the risk of swarf damaging something. They seem like blind holes but a tube for the automatic choke is actually inside there, it runs from one side to the other. They eventually burn out which is probably why the manifold is a spare. Maybe someone can chime in but I don't know how you would replace the tube inside. On later models the tube is connected to a plate which unbolts.

dogbone wrote: Did you just plug up the whole hole? The hole is a little larger than 1/4". I was thinking I might get a bolt and just glue it in the hole. That way maybe there is less direct exhaust on the JB Weld. I have used JB Weld for so many things. It's rated at 500 degrees. Can't imagine it gets that hot. Maybe in the 300s.

I used JB Weld for an exhaust manifold/jug repair on a jetski years ago.  Hardened bolt snaps in a cast piece equaled a huge mess.  I filled the entire hole with JB Weld and drilled for a new bolt.  We heated the spot before we reassembled to see how it would withstand the heat...it did, even when it was glowing from the torch.  I think you're safe.