Randy Hagins Member Joined Aug 5, 2002 Oct 9, 2019 #1 Still trying to find a 2 1/4 test pipe to fit a stock down pipe. I have a ‘87 GN. Thanks!
1986 Buick GX1 GX1 #001 [The One and Only] Joined Apr 24, 2015 Oct 9, 2019 #2 www.kirbanperformance.com use to have them. I would call Dennis to see if he happens to have one yet. They have a 4 bolt flange to take to a muffler shop to have one made if all else fails. 1984 1985 1986 1987 Buick Grand National T Type Turbo GNX 3.8 4-BOLT FLANGE GASKET for the Catalytic Converter to the Y Pipe www.kirbanperformance.com PM sent.
www.kirbanperformance.com use to have them. I would call Dennis to see if he happens to have one yet. They have a 4 bolt flange to take to a muffler shop to have one made if all else fails. 1984 1985 1986 1987 Buick Grand National T Type Turbo GNX 3.8 4-BOLT FLANGE GASKET for the Catalytic Converter to the Y Pipe www.kirbanperformance.com PM sent.
grass doctor Dream Catcher TurboBuick.Com Supporter! Joined Sep 21, 2018 Oct 9, 2019 #4 if you decide to go muffler shop to have one fabed up I have a 3 inch one for reference purposes you can borrow
if you decide to go muffler shop to have one fabed up I have a 3 inch one for reference purposes you can borrow
1KWIKSIX Well-Known Member Joined Sep 29, 2007 Oct 11, 2019 #6 Think stock is 2-1/2” for that test pipe ?
grass doctor Dream Catcher TurboBuick.Com Supporter! Joined Sep 21, 2018 Oct 11, 2019 #7 my nos down pipe was just a tick under 2.5 and the one on randy's car was 2 3/8 , was wondering if heat cycles may have shrunk it a little , but 2.5 will be the choice don't think they make 2 3/8 or 2 7/16 pipe
my nos down pipe was just a tick under 2.5 and the one on randy's car was 2 3/8 , was wondering if heat cycles may have shrunk it a little , but 2.5 will be the choice don't think they make 2 3/8 or 2 7/16 pipe