My 2011 Expedition exhaust manifolds are leaking badly, thinking it makes sense to replace them with headers.
So who makes decent price effective headers for this truck? What would you recommend and why?
Steve
My 2011 Expedition exhaust manifolds are leaking badly, thinking it makes sense to replace them with headers.
So who makes decent price effective headers for this truck? What would you recommend and why?
Steve
G'day mate!
In reply to aussiesmg :
You're back!!!!!
I would honestly put some manifolds back on it. Shorty headers are just going to crack and you'll be back at square one. You probaly just need new gaskets though.
In reply to Dusterbd13-michael (Forum Supporter) :
Just been busy for a while
The aftermarket has you covered on manifolds. They make ones that are beefier than the weaksauce OEMs.
Lots of guys have done headers on a 5.4L and noticed zero improvement in power, which either suggests that the factory manifolds aren't that bad, or the factory cam/heads/etc aren't craving more exhaust.
If you go headers, look for the thickest flanges. 3/8" minimum, although with the staggered bolt pattern they have, 5/16" might do the trick. Flowmaster makes some (or at least used to) that were 3/8" flange, stainless tube AND ceramic coated. They were a bit expensive, but not terrible.
Patientzero said:I would honestly put some manifolds back on it. Shorty headers are just going to crack and you'll be back at square one. You probaly just need new gaskets though.
Not on a 5.4L. The manifolds warp terribly. In some situations, enough to snap the shaft of the bolts.
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