RobertN
Super Member
Years ago when Ca first started actually testing, my Dad had his Jeep tested. It was a '70 CJ5, with the factory installed Buick 225 V6(option from '66-71).
It started out as a 2bbl, single exhaust, and smog pump.
My Dad had install a 4bbl Offy intake, small Holley 4bbl, Offy cam, and Hooker headers. Smog pump was removed, but all the stock parts were saved.
It passed smog test, running VERY clean.
A big part of the smog systems, is they make up for folks who dont keep their vehicle tuned. That Jeep passed great, because everything about the upgrades had included tuning the carb, jetting for the headers and cam, adjusting the timing perfectly.
It was really kinda sad. With the minor upgrades, it got much better fuel mileage, had lots more performance, and ran significantly cleaner than the spec for that year/motor. But, it would not pass because of the upgrades...
It started out as a 2bbl, single exhaust, and smog pump.
My Dad had install a 4bbl Offy intake, small Holley 4bbl, Offy cam, and Hooker headers. Smog pump was removed, but all the stock parts were saved.
It passed smog test, running VERY clean.
A big part of the smog systems, is they make up for folks who dont keep their vehicle tuned. That Jeep passed great, because everything about the upgrades had included tuning the carb, jetting for the headers and cam, adjusting the timing perfectly.
It was really kinda sad. With the minor upgrades, it got much better fuel mileage, had lots more performance, and ran significantly cleaner than the spec for that year/motor. But, it would not pass because of the upgrades...
emissions testing
IMO another joke, watch a 70's vehicle with straight pipes pass "emissions test" while a car from the late 90's couldn't, go figure :confused2: Garage owner did the test just to see what would happen.