tommyeflight89

iTrader: (4)

Hey guys,

I have been doin a bit of searching regarding this topic and trying to decide what to do with my exhaust.....



My 82 GS has a bit of a hacked together exhaust system. It has an RB streetport header (rectangular flange) that has a collector bolted to it that goes to two cats in line with eachother. Then out to a muffler.

The air pump outlet hooks up to a steel tube (Maybe 3/8" ID!)....

My issue is not the exhaust, but rather the air pump.... it sounds like crap. I took the belt off to spin it by hand, spins free with no bearing play.. good sign. But still awful sounding. At anything above idle it makes a loud clicking/scraping noise.



I have been wanting to get a full exhaust now (RB etc) for a while, but can't pull the trigger, it would probably cost me $300 to get the system up to Canada. I will figure it out eventually.


I really want to rip out the air pump and go to a double alt pulley. I would block off the air line going to the cats.

Does this sound reasonable? From what I have read cats without the air pump can clog... My thinking is my cats seem fine, and the 3/8" line feeding both of them air can't really do much.


OR, I waste ~$100 on a reman. air pump if I can find one locally.

The noise is really starting to bug me, make the car sound awful.

LizardFC

iTrader: (1)

Go ahead and ditch it and block the line, you'll be fine. Mostly what clogs the cats in these cars is time. That and running too rich. You don't need a double pulley but it's not a bad idea if you drive the car hard. Save up for the exhaust, it's one of the best mods for these cars.