help another busted manafold
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Postmaster
Joined: Sep 2004
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From: wi
help another busted manafold
12000 miles ago i took my 92 f150 4x4 to the ford shop and they installed a new long block 302 while they were doin this they also put on new exaust manifolds well the rite side broke afer about 6000miles now it broke another one at 159 a pop for these things is there a reason they could keep brakin they tell my im overworkin it and getin it hot but its not and if pullin a cartrailer 6 miles every now and again is to much for it then it shouldve never ben sold as a truck im just outa ideas mabe spend 225 and put on some headers already have flowmasters on it
Post Fiend
Joined: Apr 2004
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From: Lafayette, IN
You may as well put on headers. Or you could put on some aftermarket manifolds--they tend to be thicker iron than the OEM, plus most of the bolt holes are oversize and allow for a little more disparity in thermal movement between the block and the manifold.
I've cracked 3/4 of the Ford exhaust manifolds I've owned. None of the replacements have ever cracked, but 2 of them I didn't have for long, and the third doesn't have too many miles on it yet (15k or so).
Jason
I've cracked 3/4 of the Ford exhaust manifolds I've owned. None of the replacements have ever cracked, but 2 of them I didn't have for long, and the third doesn't have too many miles on it yet (15k or so).
Jason
Freshman User
Joined: Sep 2006
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From: Chester, VT
I've got two sets of broken manifolds in my yard right now so I bought a set of PaceSetter Shorty Headers to put on and they are supposed to bolt up to my exhaust then after the cat I go to a FlowmasterMuffler and custom dual exhaust pipes. I'll get it all together some day. Pappafisher
Junior User
Joined: Aug 2003
Posts: 96
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From: El cajon
if its your right side check the motor/tranny mounts to make sure the manifold is not hitting the frame rail.But I have seen alot crack along the "collector" area for no apparent reason.
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Postmaster
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From: wi
installed new mounts with the new engine it is the rite side it broke rite between the middle 2 cyl same as the old one did
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From: Missouri
on both my '88, and '92 F-150 trucks, both with 5.0 engines, the manifolds are cracked.
They're prone to do this as they are rather thin, and sometimes water can get on them bewteen the frame and the inner fender, and warp em.
As stated before, my pass. side manifold are cracked vertically between the forward 2 cylinders on both trucks. I even went as far as to pull a set from a salvage yard truck, and the passenger side from it was cracked as well.
Go with a good set of headers, and fuhgeddaboutit!
They're prone to do this as they are rather thin, and sometimes water can get on them bewteen the frame and the inner fender, and warp em.
As stated before, my pass. side manifold are cracked vertically between the forward 2 cylinders on both trucks. I even went as far as to pull a set from a salvage yard truck, and the passenger side from it was cracked as well.
Go with a good set of headers, and fuhgeddaboutit!
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