Results 1 to 3 of 3

Thread: My donut-less 3" down pipe. Works great with no leaking

  1. #1
    Supporting Member Turbo Mopar Contributor GLHS60's Avatar
    Join Date
    Dec 2005
    Location
    Sherwood Park Alberta, Canada
    Posts
    1,620

    My donut-less 3" down pipe. Works great with no leaking

    I ran my car for over 10 yrs with no exhaust donut and had no problems.

    My brilliant ex. guy Tim came up with the simplest solution imaginable.

    I wanted to run a full 3" exhaust with no neck down at the swing valve.

    He said no problem and found a flange that would accept the 3" pipe.

    He welded the pipe to the flange with some pipe sticking into the SV

    The flange was the proper distance from the SV to use OEM fasteners.

    I forgot all about this until I pulled the Engine a while back to refresh.

    There was a witness mark on the SV where the 3" pipe was touching.

    My Engine mounts were urethane filled so my Engine didn't rock much.

    Still, the witness marks indicated just how much the Engine did rock.

    There never was any hint of exhaust leak/noise and I ran full exhaust.

    Thanks
    Randy
    Click image for larger version. 

Name:	MVC-010F.JPG 
Views:	45 
Size:	46.6 KB 
ID:	65520Click image for larger version. 

Name:	MVC-002F (4).JPG 
Views:	45 
Size:	47.1 KB 
ID:	65521


    There is no logical reason to call an Engine a motor.

    Randy Hicks
    86 GLHS60
    86 GLHS 373 : SOLD, but never forgotten
    89 Turbo Minivan
    83 Turbo Rampage : SOLD
    Edmonton,Alberta,Canada

  2. #2
    Supporting Member II Turbo Mopar Contributor
    Join Date
    Feb 2015
    Location
    toronto
    Posts
    1,698

    Re: My donut-less 3" down pipe. Works great with no leaking

    So he expanded the pipe to copy the donut shape....nice
    Regards,
    Miles

    DD '87 Sundance T1, SLH with rear disks
    '87 CSX #432 2.5 CB TII, SLH

  3. #3
    Supporting Member Turbo Mopar Contributor GLHS60's Avatar
    Join Date
    Dec 2005
    Location
    Sherwood Park Alberta, Canada
    Posts
    1,620

    Re: My donut-less 3" down pipe. Works great with no leaking

    It's actually just the 3" pipe sticking straight through the flange Miles.

    No donut shape at all, just the end of the pipe slightly beveled inwards.

    He simply beveled it by hand using his regular old shop bench grinder.

    The bevel nicely matches the contour of the swing valve to seal.

    Sadly, I'm not using it this time as my Turbo only has a 2/14" SV

    Forgot to check the fit until it was too late to find a 2 1/2" SV.

    Thanks
    Randy


    There is no logical reason to call an Engine a motor.

    Randy Hicks
    86 GLHS60
    86 GLHS 373 : SOLD, but never forgotten
    89 Turbo Minivan
    83 Turbo Rampage : SOLD
    Edmonton,Alberta,Canada

Similar Threads

  1. Wheels/Tires Spare Tire/Donut from 87 CSX (Great for Restoration Project) - Never Used
    By TAFT CAMS in forum Parts For Sale
    Replies: 0
    Last Post: 12-31-2020, 01:45 PM
  2. Exhaust 3" downpipe w/donut
    By Bubba in forum Parts For Sale
    Replies: 2
    Last Post: 04-17-2010, 06:53 PM
  3. 3" Donut
    By Mike_Shepard in forum Exhaust
    Replies: 10
    Last Post: 07-01-2008, 05:38 PM
  4. FWD Calibration Works Great
    By 1990 shadow vnt in forum Feedback
    Replies: 2
    Last Post: 12-03-2006, 02:09 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •