5L to Inline 6 help
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Joined: Dec 2003
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5L to Inline 6 help
I have a '91 5L which has melted #2 and #8 pistons. How can this happen, and how can I prevent it from happening again when I get another engine from the wreckers?
Can I swap this motor with an inline 6? What kind of problems can I expect if I do? (same electronics?)
thanks
Ed
Can I swap this motor with an inline 6? What kind of problems can I expect if I do? (same electronics?)
thanks
Ed
Cargo Master
Joined: Dec 2003
Posts: 2,735
Likes: 38
From: Sunny Florida
The #8 is known for failure due to the PCV valve hook up which is hooked to the vacuum port to the #8 cylinder and this causes a lean condition in the #8 cylinder which leads to piston or ring failure. Not sure why #2 failed.
Its best to relocate the PCV hook up to the top of the intake so it is shared by all of the cylinders not just one. Ford changed this on I think the 95 and up trucks.
Even swapping to a 315W may have some computer problems but I do not know for sure. I think it wil run but throw some codes. For a 300 6cyl. I would say a computer would be needed for sure. Even if you have a 351W there are over 10 different computers to choose from. Atleast on my 89 there is.
Its best to relocate the PCV hook up to the top of the intake so it is shared by all of the cylinders not just one. Ford changed this on I think the 95 and up trucks.
Even swapping to a 315W may have some computer problems but I do not know for sure. I think it wil run but throw some codes. For a 300 6cyl. I would say a computer would be needed for sure. Even if you have a 351W there are over 10 different computers to choose from. Atleast on my 89 there is.
