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Thread: FFR headers

  1. #1
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    FFR headers

    Today I was able finish up windshield and doors after mounting body a few days ago. Now after trying to mount sidepipes and opening body exhaust holes I found that the passenger side fits great but the driver side the header flange is up against the body. After double checking all my measurements the body is centered within 3/16 off the frame rails. But after measuring overall header distance I found the driver side is 1" longer than the passenger side.
    1775094228739191946088253118574.jpg17750942728821896705074296737710.jpg
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    Last edited by Cobraman; 04-01-2026 at 10:40 PM.

  2. #2
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    Drivetrain is offset to the PS by about 1” which explains the difference

  3. #3
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    If that's the case then why does the passenger side flange have room to put bolts in and the flange is not hitting body and driver side flange is against the body?
    Last edited by Cobraman; 04-01-2026 at 09:35 PM.

  4. #4

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    Quote Originally Posted by Cobraman View Post
    If that's the case then why does the passenger side flange have room to put bolts in and the flange is not hitting body and driver side flange is against the body?
    Is the body centered correctly?
    MKIV Roadster - #9380 - Complete Kit - Delivered 7/17/18 - SOLD 5/2023
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  5. #5
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    As I stated in my original post it's with 3/16 side to side. The only thing I can think that may have effected this is I had to push lower body in at front of driver door to get door to look right as suggested by people on this fourm.

  6. #6

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    What engine? You shouldn't have to do this, but you could take the collector to a welder and have him cut it and shorten. I always need to extend the passenger side.
    Mike

  7. #7

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    Quote Originally Posted by Cobraman View Post
    As I stated in my original post it's with 3/16 side to side. The only thing I can think that may have effected this is I had to push lower body in at front of driver door to get door to look right as suggested by people on this fourm.
    Try measuring from the shock towers to the wheel well lip and see if it’s the same. I wouldn’t be measuring from a movable area of the body.
    MKIV Roadster - #9380 - Complete Kit - Delivered 7/17/18 - SOLD 5/2023
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  8. #8
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    Quote Originally Posted by cv2065 View Post
    Try measuring from the shock towers to the wheel well lip and see if it’s the same. I wouldn’t be measuring from a movable area of the body.
    This is how I did measure and it's very close 3/16

  9. #9
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    Quote Originally Posted by Cobraman View Post
    As I stated in my original post it's with 3/16 side to side. The only thing I can think that may have effected this is I had to push lower body in at front of driver door to get door to look right as suggested by people on this fourm.
    408 stroker tkx 5-Speed 17751345580253156599865702519620.jpg

  10. #10
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    Quote Originally Posted by michael everson View Post
    What engine? You shouldn't have to do this, but you could take the collector to a welder and have him cut it and shorten. I always need to extend the passenger side.
    Mike
    408 stroker
    1775134757109181393886048640416.jpg

  11. #11
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    After installing spash panels it moved body out 1" and made it look much better it also changed the clearance issue I had with the side pipes. Problem solved.

  12. #12
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    I think they turned out nice still needs a little more work but overall it l nice to me.

    17751735376142503701362974851483.jpg1775174041653343939747374443936.jpg

  13. #13
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    Might want to enlarge the openings a little for engine movement. Passenger side looks really close to the rear edge.
    Ralph

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