does anyone know the exact size piping mazda used as factory catbacks for either the T2 or n/a? are they both the same? 1.75", 2", 2.25", 2.5"?

just curious...when i bought my T2 the previous owner had installed the RP 50mm catback. which is about 2.5 inches or so. i still have my stock exhaust (off my n/a) hanging in my dad's shop and it seems like that is just as large. i also checked out vosko's old 87 T2 stock exhaust and it looked just as big. but maybe my eyes are just deceiving me...

thanks for any input...

 

bump...

 

i wish i could tell you since i just got my entire stock exhaust system pulled off my NA last week. i think i measured it but i couldnt remember exactly what the size was.

i remember looking at the y-pipe and thinking "this skinny bitch is stealing all my power" but i really couldnt give you the numbers on how big it was....sorry.

 

cool...anyone else...

 

itsu ni nattara reply shitekurunda?!!?!?!?!?!

 

damn, my japanese can't even stir up interest

 

im pretty sure its 1.5. seen a tii and a n/a with what looks to be 1.5

 

Jesus, and I thought 2.5 was bad

 

is 1.5 a definite?
i have a '90 GXL and was wondering if its really bad to hook up a 2.5 header and midpipe to a stock catback

 

I thought it was 2.5, since u can buy catbacks that hook up to the stock cat.

 

Pretty sure my NA is ~2.25 from the exhaust manifold to the cat, and ~2.5 from the cat outlet to the y-pipe...