[scotty57406]

Hi guys, i have a 1987 motorhome with a Ford 460 engine, the header gasket is leaking really bad and need to change it, the problem is the bolts are seized solid and i am sure they will break if i wrench to hard on them, do you think heating the head around the bolt will be okay to do? not sure if heating a cast head in a specific spot is a good idea, any thoughts or alternative ideas.
Scotty

 

[johnsongrass1]

Heat the bolt, it’ll expand, hit it with whatever rust penetrative you have laying around. Do it again and it should come out. The heat expands it, the rust stuff cools it and contracts the stud, the rusty breaker will get sucked into it by capillary action, breaking the corrosion bond.

 

[scotty57406]

thanks for the tip,

 

[lmsport]

they will probably break.
my buddy does mobile welding and bolt removal and he has done many many Ford 460 exhaust manifold bolts.
he would try heating the bolt head till dull red, and spraying with mixture of ATF and toluene.

 

['49 Ford Coupe]

Get one of these and grind a tool to just have a flat end rather than a cutting end then beat the s*** out of the head of the bolt. It's worked for me four or five times in the last few years. If you have the room put a box end on the bolt and try turning it at the same time you are hammering the head.

Air Impact Hammer Kit

Amazing deals on this Air Impact Hammer at Harbor Freight. Quality tools & low prices.

www.harborfreight.com

 

[scotty57406]

thanks for the tip,

they will probably break.
my buddy does mobile welding and bolt removal and he has done many many Ford 460 exhaust manifold bolts.
he would try heating the bolt head till dull red, and spraying with mixture of ATF and toluene.

they will probably break.
my buddy does mobile welding and bolt removal and he has done many many Ford 460 exhaust manifold bolts.
he would try heating the bolt head till dull red, and spraying with mixture of ATF and toluene.

going to try it tomorrow, i don't have any toluene but do have penetrating oil,

 

[scotty57406]

Get one of these and grind a tool to just have a flat end rather than a cutting end then beat the s*** out of the head of the bolt. It's worked for me four or five times in the last few years. If you have the room put a box end on the bolt and try turning it at the same time you are hammering the head.

http://[URL]https://www.harborfreig.../air-hammers/air-impact-hammer-kit-92037.html

[/URL]

going to try the heat and penetrating oil first tomorrow, if that won't do it i will grind the punch end flat and give it ago, the darn angle of the bolt head is behind the front shock, if plan A fails i will remove the shock and try the impact method, i like it, thanks

 

[wave1957]

Would those tips work/be safe on aluminium heads?

 

[S10xGN]

Would those tips work/be safe on aluminium heads?

You wouldn't want to hit the head itself, just the bolt. Should it "slip" it would likely make some ugly peen marks on aluminum...

Russ

Nevermind, I thought you were speaking of the "tip" of the hammer tool.

 

[BogiesAnnex1]

My expectation is you’ll be pulling the head, try not to Mickey Mouse the bolt trying to get it out that doing so becomes a bigger problem.

Bogie

 

[scotty57406]

Success, used the heat and penetrating oil today, worked the bolt in both directions and it finally started to move, thanks for the tip, wifes glad that i didn't break something for a change

 

[saxybiker]

Wives are good for that!

 

['48 Austin]

Put plenty of anti-seize on those threads before reassembly. Click on below and take your pick:

anti seize compound: Search Result | eBay

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