exhaust replacement
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From: washington usa
exhaust replacement
I have a 84 f150 5.8w that has a exhaust leak in the exhaust pipe. It is leaking around the Y connection I believe. I think it is original and is in need of replacement. How hard is it to replace and what problems should I expect? The connections to the manifold are what I am afraid of, any help would be appreciated.
Thanks Mike
Thanks Mike
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exhaust replacement
I replaced the head pipe on my '93 300 this weekend. After 200K miles, I was also most concerned about the connection to the manifolds.
I hit the four studs several days in a row with a good spraying of PB Blaster. Prior to removal, I let the engine warm up a bit and used a long handled rachet to free the studs. Not a lot of pressure, and I was careful to work it back and forth a bit to loosen any surface rust.
Also, I used a sawzall to cut off the head pipes a few inches below the flanges. More room to work!
I hit the four studs several days in a row with a good spraying of PB Blaster. Prior to removal, I let the engine warm up a bit and used a long handled rachet to free the studs. Not a lot of pressure, and I was careful to work it back and forth a bit to loosen any surface rust.
Also, I used a sawzall to cut off the head pipes a few inches below the flanges. More room to work!
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Joined: Dec 2002
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From: Billings MT
exhaust replacement
Kuli,
Slorch hit it right on. Shhot the bolts and nuts with something like PBBlaster. I love the stuff myself. Do that several times before attempting to remove the nuts. Also, like Slorch says, back them off about 1/2 turn to 1 turn max at a time, then turn them back the other way just a little to clean the threads. If they are real rusty, you're essentially using the nut as a die and "cutting" new threads. Be patient. I rushed a job on my old truck removing the exhaust, 4 broken bolts and probably several bones in my hand (not really but it sure felt like it), I was wishing that I had taken the time during the previous week to spray them with something to loosen the rust.
Good luck.
Slorch hit it right on. Shhot the bolts and nuts with something like PBBlaster. I love the stuff myself. Do that several times before attempting to remove the nuts. Also, like Slorch says, back them off about 1/2 turn to 1 turn max at a time, then turn them back the other way just a little to clean the threads. If they are real rusty, you're essentially using the nut as a die and "cutting" new threads. Be patient. I rushed a job on my old truck removing the exhaust, 4 broken bolts and probably several bones in my hand (not really but it sure felt like it), I was wishing that I had taken the time during the previous week to spray them with something to loosen the rust.
Good luck.
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exhaust replacement
One other thing I forgot: Disconnect your battery when removing/installing the head pipe. When installing the new one, I made contact with the starter and had my own little fireworks show!
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Floor-N-It
1987 - 1996 F150 & Larger F-Series Trucks
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Jan 21, 2011 08:21 AM
