92 Bronco 351 plenum.

[conbillb]

Any ideas on how to stop an air leak around a crack bolt hole on the upper intake manifold plenum. I've tried red silicone and quicksteel and neither worked. If not, can anyone recommend a place I could get a new or used one for my 92 351 Bronco? TIA, Bill.

 

[bidibronco]

I hope someone will correct me if I'm wrong but the upper intake manifold off of a 302 will work with the 351w. Other than that, try a local salvage yard or get a new intake like and edlebrock or something of the sort.

 

[Broncobill78]

Any ideas on how to stop an air leak around a crack bolt hole on the upper intake manifold plenum. I've tried red silicone and quicksteel and neither worked. If not, can anyone recommend a place I could get a new or used one for my 92 351 Bronco? TIA, Bill.

Bill,

I've always been a fan of JB Weld. For something like what you describe I'd cleanup & groove the crack with a dremel & work some JB Weld into it. I've also seen a crack like that repaired with solder & flux. Can't say as I've ever *done* it myself but I watched a friend fix one that way up in the White Mountains, the repair held until he sold the truck a couple years later.

 

[BLADE262US]

Yes Bidibronco the 302 and 351 upper plenum are different one has kindof square holes in it the other round not interchangable /emoticons/[email protected] 2x" width="20" height="20" />

 

[bidibronco]

Never noticed that part but I've only delt with the 351 and it as a bad assumption... my bad, thanks for the correction...