351W manifold job, any pointers?
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Junior User
Joined: Jul 2010
Posts: 88
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From: Rehoboth MA
351W manifold job, any pointers?
hi i have a 94 F350 with the 351W, and i have to do the left side manifold. i know these are a pain in the *** to do, and i was wondering if anyone had any tips on what to do so i dont break anything.
please get back to me thanks!
please get back to me thanks!
Elder User
Joined: Mar 2008
Posts: 816
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From: Sandy Hook, CT
While PB Blaster is good stuff, Kroil is 25X better, especially on this kind of job. Spray it on a week before you start, every day, drive it and on the last day, they'll come out without any fear of breakage. If they DO break, they can be a royal PIA to extract. Don't merely soak them the night before-you WILL end up breaking some/all of them. Trust me, do the soaking every day, over a week and you'll be fine. BTW, this stuff works wonders on stuck spark plugs, which can be even worse than manifold bolts!
Roger
Roger
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Thread Starter
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Junior User
Joined: Jul 2010
Posts: 88
Likes: 0
From: Rehoboth MA
While PB Blaster is good stuff, Kroil is 25X better, especially on this kind of job. Spray it on a week before you start, every day, drive it and on the last day, they'll come out without any fear of breakage. If they DO break, they can be a royal PIA to extract. Don't merely soak them the night before-you WILL end up breaking some/all of them. Trust me, do the soaking every day, over a week and you'll be fine. BTW, this stuff works wonders on stuck spark plugs, which can be even worse than manifold bolts!
Roger
Roger
where can i buy this stuff?
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Joined: Mar 2011
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Remove the tire and inner fender to get good access. Use an air chisel with a blunt end and hit them straight on. I got 13 of them out by hand after doing so the other three snapped I drilled and tapped one and left one snapped off and left my tap snapped off in the second (this was last fall) no leaks. i had to make this wrench to get to the bolts near the firewall after I put my headers on
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Joined: Feb 2010
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I sprayed PB Blaster for about a week before and went and did a few errands on the day I did the job so everything was good and hot. It kinda sucks to work on a motor when its hot but I don't have a torch and I didn't break any of the bolts. Just take your time, and clean up the threads with a tap before you reinstall the manifolds.
