Ive tried using the search function to find the answer to this question, but came up with nothing.
I purchased a used set uf the pacesetter headers part psm-70-1206 and am not sure what size or kind of header bolts i need for them?
Any information would be helpful thanks.

 

I don't remember for sure but I believe they are 6mm coarse thread. I forget the exact thread pitch.

 

IIRC, when I had to replace mine a couple of months ago, they were 8mm x 1.75. 1/2" should do you, maybe 5/8 (length)?

 

Thanks! Im currently colllecting all the stuff ill need for the install I cant wait to get them on my car!

 

Does your car have the AIR pump?

 

1990, 3.1, I'd guess it does. Unless it was already removed.

 

If it does have AIR or did, there will be a check valve installed in a tapped hole next to the EGR pipe that connects to the AIR pump that is mounted on a bracket right under the alternator. Either way, that AIR stuff CANNOT be used with the headers (no provision for the AIR valve in the pass side header), so you will have to delete it. Make sure your car can comply with state emissions regulations if you remove the AIR pump.

 

Post pics when you get it going.

 

I just went and checked and yes the air pump is there. i just read that my state adopted californias emissions starting in 2009. (2) Motor vehicles with a model year equal to or later than the first model year for which new vehicles sold to Washington state residents are required to comply with California motor vehicle emission standards are exempt from emission inspections under chapter 70.120 RCW. I think that would make my car exempt from emision testing if I read that corectly?

 

Can you even read that? I got lost after the first ten words of legalese.

Looks like you're emissions exempt, but call an inspection station just to make sure. It's their job to know that stuff. Just make sure that you don't need a visual either. You'll fail.

 

Yah I can't really understand it either! I know in the seatle area they have emisions testing, but I dont think I do in Benton Franklin county.

I dont want to do an Air delete if I can avoid it. Couldnt I have a bung welded onto the headers for the air pump? and modify the tube for the egr to take the 3.1 style? I have one off of a 2.8 and it looks to be vacuum controlled and the one of the 3.1 looks electrical. I am just wondering if this is possible or if it has been done?

 

well if you wanted the emission stuff then you should have got the headers off here
http://www.hawksthirdgenparts.com/pa...beheaders.aspx

anything can be done but your going to have more headaches over it, and no you don't emission test your car all you get is a safety test all lights work and nothing is hanging and your free to go.

 

Those headers look like they dont have a place for the egr valve to bolt to though?

 

Why do those headers look like they are for a FWD vehicle? I mean, the one header on the right looks like it pretty much angles back towards the rear of the car, and the y-pipe is straight, not bent like it's supposed to be.
Not if he has visual emissions inspection... No AIR, no pass. It's that simple. Same thing if he were to remove the catalytic converter. Automatic fail.

Anything that bolts to the 2.8 manifold bolts to the 3.1 manifold. Proof? My 3.1 is running the vacuum-controlled EGR valve from my 2.8. The difference is in the valve itself and the upper part of the manifold transfer tube where the valve mounts.

 

So i can run the 2.8 egr on my car? The guy i bought the headers from left it on there. it looks very different and from what i could see the 3.1 version dosent have a vacuum line to it? I could have missed it though.

 

No, you need to remove the old EGR stuff and put yours on there. The vacuum controlled EGR has a different switch, and you'll throw codes if you don't use yours.

Heat and penetrating oil (PB Blaster is my preference) will get those bolts out no problem.

 

those header have all the emissions bolts and holes on it, i know first hand i ordered some to delete all my emission stuff but didn't read the the description saying that it's HAS all the hook ups for it. so i sent them back. but it is for a RWD, well i never seen a visual test done on a car / truck that was over the 20 years old unless it was something really wrong like it was a v6 or 4 then they swapped an v8 or have a supercharger or turbo on it or camming like crazy. I should know i work at and inspection station /parttime but i will check our computers to see if they do that in you town/county.

 

Thank you! This is my first car ave learned quite a bit from this site. I was worried that my 3.1 egr wouldnt bolt upto the headers

 

my advice is sale them header get the hawk ones if you want to keep you egr & emission because your going to have to custom make some to fit it back CORRECTLY to avoid exhaust leaks. But i would just delete it all it's look alot nicer with out you will need a 915k6 belt if you do

 

Might be different for NJ than here in NY and different for Washington still. Here, we have mandatory visual testing for up to 25 years old. as per NY CR-79 for low enhanced emissions inspection, and vehicles 1984 or newer require an AIR system and EGR system if factory installed. Which is why he needs to check with a local inspection station as per state laws for emissions control devices.

 

it is different but then you have the lazy people that just don't do there job like north NJ we have the full computer setup now where any car obd2 and 1993 up we just plug in and check for codes and the emission numbers form the o2 sensors and engine load etc etc

south NJ you have visual test in ocean county but that if anything is wrong

older like 1990-92 is the sniffer and obd0-1 code check and if the sniffer comes back high then a cat check, because most of the time someone deletes the egr they never turn it off on the ECM so we see that first with the car heats up.

but we had some crazy ones a wrz with no cats passed you can tell it was built but no code or emission problem so passed

 

Yep, out here, the sniffer is only down by NYC, and they get a full dyno test like in CA (and apparently WA now). Anything OBDII is hooked to a scanner that checks the monitors on a car registered outside the NYMA (NYC and surrounding area), and the rest gets visual other than what's exempt.
Although the guy didn't pop my hood this last time... IIRC, my evap canister wasn't even in the car. Even so, it hasn't been hooked up in six years, and I pass every year. Hmm. And yes, as soon as I get some vacuum hose and the connector for the solenoid, it's going back in.

 

Just tried following the air pump tubes. looks like to me its unhooked. It dosent run to the cat. also the cat on there is the weirdest ive ever scene it looks like its one right after another some kind of double cat? all the exhaust pipe after the Y looks much newer and has a magnaflow muffler so im thinking one of the previous owners put the new stuff on there and didnt hook up the smog pump?

 

Could be a short, non-direct fit cat and a resonator. Would need pics to verify. However, if the AIR is disconnected at the cat, I'd leave it at the manifold just in case until you verify your emissions controls laws, or you find someone who will pass it regardless. Hold onto the headers until you find out for sure.

 

Ok I can post a pic later on today. I have to jack it up anyways to check out a transmission pan leak that has come back. I probably over tightened it. I noticed it while lookin at the cat.

 

Heres pics of the cat thats currently on the car.

 

Ok here they are. didnt notice upload had failed before I uploaded previously.

 

That would be a factory dual monolith cat. Same thing as the companies put out today but bigger. That cat doesn't appear to have an AIR fitting on it, so you may be able to get away with not using the AIR stuff. Just make sure to take all of the brackets off and hide the divert valve connector really good. If the car passes emissions the way it currently is, you won't have any problems. The replacement belt you need is a 915K6 or equivalent.

BTW, can you measure the length of that cat for me, from the flange to the y-pipe? I haven't been able to figure out if my cat's short or the y-pipe is screwed up... The whole exhaust from the cat back to the tail is out of alignment and hits the heat shields by the axle (that noise just sucks) if it doesn't hit the front seat belt receiver bolt...

 

No problem! the cat from the rear flange to the front clamp is about 22.5". The Y pipe from the front flange of the cat to where the passenger side manifold welds in is about 27".

 

Made a pic

 

Regarding the air pump and emissions, I went through that with no problems.

https://www.thirdgen.org/forums/v6/4...its-alive.html

Size for the header bolts, 3/8" wrench/socket fit the heads perfectly (I believe they are not sized metric). Somebody correct me.

Anyway, headers, EGR, no AIR, all works fine for me.

 

My 2.8L passed Washington emissions with no smog gear what-so-ever and we don't have visual inspections up here! It just barely passed, but it passed! With a cat on it I bet it would have passed easily.

 

Ive seen posted in other posts that running the belt setup re routed instead of running it with the delete pully can cause you to throw the belt. Have any of you had any trouble with that?

 

I've been running without the smog pump and no delete pulley for years. Haven't had any problems with throwing the belt.

 

I don't have either the AIR pump OR an A/C compressor anymore . Finally got rid of that blasted compressor and the bad pulley bearings last year. Nope, haven't tossed a belt. They keep squealing, though... Probably the rear alternator bearing I can't get off without a press .

Besides, the FACTORY doesn't use delete pullies... That's what the alternate belt routings on the stickers are for.

 

My tensioner pulley is making a little bit of noise periodically but it has always done that. On the back of the gator back belt packaging it has a pic of the 2.8 motor routed without an air pump

 

oil pressure is now higher along with voltage gage, with a shorter belt.