Y pipe rattle driving me crazy!!!
I-pipe band. Get a bunch of 3/8" thick
things to use for shims - strips of wood
etc. Put shims between the pipe and all
close interferers. This includes the
floor pan bosses, the crossbrace, the
driveshaft, the gas tank heat shield, all
down the line. Now jack up the Y-pipe
(more than one floor jack, or at least a
couple of jack stands help) until it's up
as far as it'll go with all shim spacings
set. Now tighten I-pipe band and collector
flanges. There should be no interference now
(unless your motor mounts are pudding).


