View Full Version : 4.6 dohc sidepipe fitting issue
Cooter
07-26-2015, 08:39 AM
I am mocking up my exhaust to insure proper fit before sending the sidepipes for ceramic coating. The passenger sidepipe seems to be bent. I emailed FFR and was told not to worry about it since I didn't even have the body on yet. So, I installed the body and now I can't get the sidepipe close enough to bolt to the header.i purchased the hooker headers through FFR and the engine is the 4.6 dohc from a 2004 Mach 1. Is there any adjustments I can make? Or am I stuck with a funky passenger side? To me the side pipes are the main attraction on these vehicles and should be perfect. Any help is appreciated.
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Cooter
07-26-2015, 10:21 AM
Here is a pic of the sidepipes side by side on flange.
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MCathcart
07-26-2015, 01:17 PM
Cooter, I see your flange difference but what I also notice is... The pipe it's self is not straight. #7787 had this same problem and FFR supplied another header and side pipe. I think the header was OK but the pipe (like yours) does not look straight.
First! Make sure your Engine is Straight and Level. I've seen them sit low on one side and it was because of the motor mount position to the frame. I haven't had my body back on to check mine (also a 4.6). If mine is still out of whack, I'm going to grind the welds out of the side pipe and straighten it up.
ponyboy1965
08-23-2015, 03:56 PM
I had the same issue with my 4.6 DOHC called FFR and told them the problem they sent me a flange with two new gaskets for free fixed it rite up
Jeff Kleiner
08-24-2015, 05:16 AM
Adding another flange will only move the pipe outward but will not correct the angle. After the body is on with the doors fitted (reason being that the body usually has to push in ahead of the doors and be pulled outward at the rear) hang the pipes using a washers as spacers at the rear flange hole as necessary to make them parallel with the body. Measure the total thickness of your spacers and order the appropriate wedge from Breeze. For example if you have .125" worth of spacers you would used wedge #35466.
http://www.breezeautomotive.com/search.php?search=wedge
CHeers,
Jeff