well, i live in California and my 22re is a fan of barely squeaking by at the smog station. such a rebel lol

im too the point now of considering this truck to be a lifer under my ownership, and am getting close to doing a rebuild. . . . . . im just not sure what to throw in there. .. . . .

lower end is easy, but the head- has anyone smogged with a more aggressive cam? over-sized valves? the header and large exhaust to take advantage of any modification to flow?

also, does anyone have experiance with top-end modifications deminishing reliability?

 

unsure of the aggressive cam, or oversized valves. but a header and exhaust is no problem.

 

thanks for the info! did the exhaust help your v-6?

 

I have the LC Street head that has bigger valves and their cam also.

For smog you simply need a good running engine and the more efficiently it can burn the better.

Since Cali does the rolling dyno test you should use the smallest tires you can even if you borrow them. Any mechanical advantage you can get to make it easier for your motor to run will help.

With these 22RE's you dont necessarily wand a "large" exhaust. 2 1/4" is about as big as you want to go or you can kiss your back pressure and torque goodbye.

New motor, new exhaust, new cat, sonically cleaned injector and you pass no problemo.

 

I was curious about this. I just did a rebuild at 279,000 miles and the stock exhaust is pretty holey at this point. I was going to get new piping and cherry bomb turbo muffler and keep the stock cat. New injectors, new fuel filter, and an otherwise stock rebuild Im assuming will pass easily. Ill also swap the 31's out for the stock rims and the tiny tires i bought it with.

 

I too have the aggrassive LCE cam in my 88. It is cali smog legal and had no ill effects on my test. Also a 2.25 cat back exhaust which also was no issue. One thing I highly recommend is the seafoam treatment. You can find more info on it here through the search feature. I will say that I had to smog my truck two years in a row due to its rep as a gross polluter (before I acquired it) and in that years time the ONLY "change" if you will that I made was a seafoam treatment. The year before seafoam I barely passed. They year with seafoam and some 91 oct and I passed with flying colors.

 

wow thats awesome info guys much appreciated! hmmmmmmmm cam it is.. . . .. for now. . . . . a haha aahaha aaaa haha ha haaaa (written attempt at maniacal laugh)

 

Honestly one of the best things you can do is take it to a smog place where you either know someone or the guys arent doochers see if they will let you hold a rag around the reading device and your exhaust tip so it will get a solid reading ( I have done this and passed with minor leaks before and after my cat ((on a 22re))).

Also Make sure your tps (throttle position sensor)does not stick you need to maintain a fairly constant RPM for about a minute.

also I tested with 33s (but im on 5.29 gears )