Projects any idea how to fix an exhaust manifold leak without removing the manifold?

My straight eight has a decent exhaust leak on the manifold - not sure if the gasket blew out on the top of one of the ports or what -

i can replace the gasket, but hate to take the manifold off - my luck, i'll twist a bolt off in the head.

any ideas about how to seal up the top of that port without removing the manifold? i've thought about something like JB Weld...

 

Your kidding......

 

I hope he's kidding,

real easy start taking off the bolts, if any give you problem (which I doubt) but if they do just skip them and spray some penetrate and let it sit. dont use jb weld to make a repair their are plenty of people selling or even giving away manifolds on here or craigslist. good luck

 

Duct Tape and wire works well!!

 

x2

Just make sure you use the "silver foil" duct tape and not the "grey" stuff and everything will be fine

 

I use Play Dough, it hardens up just great with heat. And it tastes good too!

 

Y'all guys quit messing around. I would braze that thing up.

 

braze around the bolts too, sometimes you get leaks there

 

I have used that spray foam in a can and had pretty good luck!

 

I've been doing exhaust work since 1977 and I have not found any short cuts to fixing a manifold leak. Start spraying the bolts with PB now and by this weekend try and get it off. An impack set on low is better than a hand ratchet. The shock of the impact tends to break the rust loose. Go slow and spray often. It'll come off

 

Weld them up using wire hangers(just like they did in the '50's),if that doesn't work,wrap the exhaust in Dryer sheets....

 

They sell that exhaust stop leak....it works pretty good....look for it in Auto-z right next to the radiator stop leak

 

I remember you....

 

header wrap and some hose clamps is a temporary fix.

 

Not to hijack, but wasnt exhaust leaking something totally not to worry about?
I thought it was a big issue on a 2 stroke engine.
Of course im not saying leave it as is, as i'd fix it myself, im just wondering if my
knowledge is bs or if im right about it.

Then on your question:
I personally would listen to Onlychevrolets and take the header off. Pretty easy from there on.

 

Damn you guys are hard,,,LOL. But it is true,,,,,,,ya just caint fix stupid

 

As mentioned start using penetrating oil now, and use engine heat to your advantage by spraying the bolts after a drive and letting the cooling action wick the oil in.

Depending on access, you may not need to entirely remove the bolts or the manifold. A lot of designs you can loosen about 3 turns, poke the old gasket out, and drop the new one in.

If the bolt twists off, there's a good chance it wasn't applying much clamping force to begin with, and was part of the root cause anyway.

good luck

 

Are you the same guy that welded his pinion to the ring gear to make a locker?

 

I saw that, right next to the "engine rebuild in a can".

Bob