Epoxy-in injector bungs

[gdr]

Anybody got experience with glued in injector bungs in an intake manifold? I've just modified a manifold for SBC, glued in the injector bungs and dressed them off flush with ports. Would have welded but I'm not much of a welder and was afraid of warping intake when preheating. The epoxy result seems strong but I was wondering what the durability is likely to be. The epoxy I used is supposedly high temp stuff, good for 150 deg C, hopefully intake won't get that hot.
My fuel rail fixing is such that even if the epoxy fails, injectors will remain located and I guess the loss of vacuum would be immediately apparent, so I'm confident no risk of spraying high pressure fuel around engine in event of glue problem.
Any thoughts before I fit the thing?

[GreenV8S]

Make sure there is absolutely no possibility of them dropping *into* the manifold, the other failure modes seem survivable if the injectors are secured by the fuel rail.

[gdr]

Yeah, that would not be pretty - fortunately the epoxy-in bungs have a big upset un upper part and so can't pass through the holes drilled in manifold. In fact, even without the epoxy the fit was quite snug so as you say, failure should be survivable.

[eliot]

JB Weld seems the pup to use for this. I doubt you will warp the manifold through getting it too hot though, they are pretty thick (hence why they need a pre-heat in the first place)
Mine didn't warp, despite:

[350matt]

I'd reccommend JB weld as well, excellent stuff, I've used it to repair the ceramic iginter unit in my gas fire and it lasts about 6 months before crumbling away ( bear in mind it sits inside the flame)

Matt