WTB: Exhaust Manifold Options

[kerosene]

I need a uncracked Exhaust manifold with an o2 sensor hole drilled....theres new ones on ebay for 85 bucks, but im wondering maybe someone has a used one that i can grab off them.... I need it for a 94' Celica ST 7aFe engine, no modifications or anything

This post has been edited by kerosene: Jul 18, 2007 - 11:34 AM

[CaliJeff]

heh, np.

btw, u can get an o2 bung hole bored into ur EM at ur local auto shop for in the area of 20-40 bucks.

[6strngs]

heh, np.

btw, u can get an o2 bung hole bored into ur EM at ur local auto shop for in the area of 20-40 bucks.

it was like $20 to have them drill and weld in an o2 bung on my stainless downpipe, but I provided the bung.

I went in there, before I was turbo, I wanted to add another bung to my stock exhaust manifold so I could tune my car NA using my wideband and AFC Neo to squeeze some horsepower out of it. but when I went in there, they told me they couldn't weld a steel bung to a cast iron manifold. then I went to the other muffler shop in town and they said it could only be done with a tig welder, which they didn't have (and I assume most exhaust shops only have mig)

so, what I'm trying to say is, no, you can't just have a bung welded in. However, if your exhaust manifold is cracked in the top section, you only need to buy that and you can re-use your stock primary cat, which is where the second O2 bung is located if yours is a cali-spec (which I assume since you're saying it has two O2 sensors but it's a 94; in 96-99 both the california and federal ones had two cats and two o2 sensors, but 94-95 only the california ones did) Also, I think 96-99 STs had their second o2 sensor down the exhaust stream after the second cat.