I have the N/A 1.8.

Does anyone know the sizes of the pipes--I need the size of the main pipe from the manifold to the cat and the size of the pipe out the front of the cat that slips into the front pipe.

my front pipe had a rust spot that broke through and I put a sleeve between the two in the past. now that i have the new manifold on and the front pipe is hanging properly, that brought it forward and the sleeve I have there is barely long enough, so i need to make a new sleeve.

I'll keep trying to hunt this down, but if someone knows it and posts it before I find it, that would be wonderful.

The cat I put on was from NAPA and was direct fit. I'm figuring they might know.

Walker says 2" for all pipes 84-86 Buick Skyhawk 1.8 non turbo 1 3/4" convertor pipe

Doug in P.R.


92 Pontiac Sunbird LE, 2.0, AT, Red / Black with Grey 155K miles. Hurricane Maria Survivor ! ( It takes a licking and keeps on ticking ! ).....in Salinas, Puerto Rico!