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jonathancullen89
04-26-2007, 02:00 AM
hey i got a new muffler and i need to know what size the stock exhaust tubing size on a 90 celica gt. im not sure im guessing either 2" or 1 3/8" but not sure so if anyone knows please post as soon as possible so i can go get an adaptor to fit my new muffler. thanks alot guys

91 celica st
04-26-2007, 02:37 AM
1.75 i belive....at least thats what the ID is on my st

Playfortoday
04-26-2007, 04:11 AM
I think it is 2" for the 5sfe, but it has been years since I had a GT. I would say to just go out and measure the circumference of the pipe. Then use the equation:

Circumference of the pipe divided by 3.14 (this is Pi) equals the diameter.

Edit: Here is an example... If you measure a circumference(the length around the pipe) at 6.25", you would get 6.25 / 3.14 = 1.99 inches... basically 2 inches. :wiggle:

1990CelicaGT-S
04-26-2007, 12:08 PM
Good one Play. :bigthumbu

jonathancullen89
04-26-2007, 02:53 PM
alright cool thanks guys, by eye it looks like 2" but i need to be positive. ill do that tonight thanks