Hi all, Have a 2.7 to go in my 914 and I'm curious if the air injection system needs to be included.

joe b.

For smog? Dunno, what is the cutoff date for smog checks in your state?

If yur 914 falls inside the smog checks, you will "normally" need to install ALL the smog crap, whichs includes the thermal reactors.

Unless you can convince them FI/CIS was never an option on the 914.....point to the 914/6 with carbs. You might get away with it.....you might start talking with local wrnches on the smog regs and somebody at the state office.

You might get lucky and run into a smog weenie that is a car nut.

air injection is to oxidized unburnt fuel in the exhaust to help keep the cat clean. it made the 2.7 run hot causing the head stud and vavle guide problems. since you are gutting the stock 911 2.7 exhaust, i would remove it.

So that's junk with the exhaust. Do I cap off the injection fittings. Also wondering if there is a cover to replace the plastic inlet for the air pump.

Thanks, joe

Correct me if I'm wrong... I thought it was the addition of thermal reactors to US models that caused the 2.7 to run hot. Is that the air injection you're referring to?

-Rusty

rusty, yup, a combo of all of the above. thermals did cause the heat. air injection just diluted the exhaust. 74 i think was the only year of air injection without the thermal/egr stuff.