Manifold question

[BurnerBrown]

Are ramshorn manifold studs theaded into the manifold? Just got LMC dual exhaust and I can see the manifold studs are shot and will need to be replaced. Whats the best way to go about this? should I pull the manifolds off?

[jaros44sr]

Originally Posted by BurnerBrown

Are ramshorn manifold studs theaded into the manifold? Just got LMC dual exhaust and I can see the manifold studs are shot and will need to be replaced. Whats the best way to go about this? should I pull the manifolds off?

Yes they are threaded into the manifold and second only to bumper bolts as in pita to remove. I've used a stud puller,with heat, to get them out before. I've also broken them clean off this way before.. If you take the manifold off the engine and clamp in vice you risk breaking the manifold. Good luck

I'm headed over your way this morning, going to Mienke to see if they can bend up my 2 1/2" exhaust. I have a sample 2" I'm taking with me, hope they can work off this

My opinion, new manifolds for 100.00 was the best money I've spent on the truck so far. I've may have used ones over here if my sons didn't find them first.... J.

[72armyswbtruck]

Here is a really cool trick for manifold threads:
Get a long candle and light it, let the wax drip into the threads, the was will penetrate the rust and makes it easier to remove the threads.
I would have to agree with J. new manifolds for around $100 are the best and easiest bet.

[jaros44sr]

Originally Posted by 72armyswbtruck

Here is a really cool trick for manifold threads:
Get a long candle and light it, let the wax drip into the threads, the was will penetrate the rust and makes it easier to remove the threads.
I would have to agree with J. new manifolds for around $100 are the best and easiest bet.

That's a new one on me, nver to old to learn. So, this method is for the nuts at the flange?

[cdowns]

i've always just heated the manifolds with a torch to cherry red and unscrewed them

[faribran]

sdowns has the right idea---------it works

[mrein3]

Originally Posted by cdowns

i've always just heated the manifolds with a torch to cherry red and unscrewed them

Me too. Only I have it done this for 10 years or so. Earlier this summer I was at a bud's place. He has torches - I don't. I brought one truck and one Chevelle manifold to attempt to pull studs.

The first one I tried, I got the manifold red hot and backed the stud right out.
YES! I still got it.

Then I proceeded to twist off the next 5 flush with the manifold.

[68gmsee]

Best idea is new ones. But, I'm of the old school. I will give it a good shade tree shot, then go from there.

I took the manifold off and soak the bolts, heated with propane torch (I don't have oxy torch), soaked again, and then wiggled back and forth with a pair of vise grips.

If you're lucky they will come out this way, if not, they will break. I had luck with one side but broke the studs on the other one and bought a new one.


The old one is still in my garage with ruined threads after drilling and tapping the sheared bolts.

[BurnerBrown]

Jaros, Thanks for the offer to come up, which Meineke do you go to?

Think I'll pull the manifolds, hit em with the torch and try to work the studs slowly back and forth and see what happens. Worth a try. Thanks for the response, now I know this is as much a PITA as I has suspected. I will drop a line once I have an outcome.

[jaros44sr]

Originally Posted by BurnerBrown

Jaros, Thanks for the offer to come up, which Meineke do you go to?

Think I'll pull the manifolds, hit em with the torch and try to work the studs slowly back and forth and see what happens. Worth a try. Thanks for the response, now I know this is as much a PITA as I has suspected. I will drop a line once I have an outcome.

Went to the one by NAPA, said my pipes will be bent and can pic up Mon. Hey, if you need my stud puller, don't know why they call it a puller since it just grabs it, give me a shout J.

[BCOWANWHEELS]

i agree with cdowns totally...........