I orderd the Pacesetter Headers for my 3rd gen VG, had them sent to HPC to get coated, got them back wraped them with header wrap, every thing is cool. wait... found my old O2 sensor in my tool box, humm lets see how the sensor fits, F*** it don't fit, it's too small.I emailed Pacesetter they told me this,
" the o2 sensor fitting should be 18 x 1.5 , thats i the -4 section of the Y-pipe , the front header has a 22 x 1.5 fitting for the egr valve" .
That helps but not much, what I need to know is, do o2 sensors have a standardized output reading? Are the o2 sensor ont he VE bigger? What O2 sensor will fit and work? Help?

 

I thought they all threaded the same... but then again, wtf do I know??

(you wouldn't happen to have any pics of your headers, would you??)

 

do they make them for the ve motor? and how much are they

 

Nissan uses a small o2 sensor on their cars for some reason or other. compared to most other companies. I believe that all o2 sensors output the same way but finding the right way to wire up the harness can be a beatch

 

try one from a Z31. I've got one from an old Z31 turbo manifold I bought and the threads are a lot larger than the ones from my VE.

the other thing you can do is go to a hardware store or exhaust shop and see if they make an adaptor that you can screw in to drop the size of the hole down.

 

I wouldn't recomend the adapter for 1 reason. It will take the o2 sensor out of the exhaust flow and possibly cause inaccurate readings.

Most exhaust shops should have a bung they can weld onto it.

 

here is the o2 for a 90 max:

here is the 02 for a 90 300ZX turbo


it appears to have the same connector. just different heads

 

I've got some adapters here for other sizes that are "zero depth"... for one this size, you screw it into the bung hole (uhhh huh huh huh.. I said Bung Hole ), then the sensor screws into it, and there's no depth lost. the sensor will still sit in the exhaust flow and everybody is happy.

 

Matt, where can I get a zero depth adapter?

 

I have pictures of headers, just don't know how to post them.

 

so do they make them for the ve motor

 

ya got me. you can buy them from a hardware store for most standard pipe sizes, but not for metrics like these.

I would contact pacesetter and see what they say about it. you might be better off buying an O2 sensor for the Z or something.

 

The only problem with the Zs o2 is the wire length. it's way to short. the max (90-94 all) has a 65" wire length the Z on the high side is 30"

 

I thought headers didn't do that much for our cars.

 

By themselves they do little to nothing. with other mods they help.

 

The Z 02 sensor looks like the threading I need (18), just dosent look deep enough. And 30" of sensor wire is just about right. My bosch O2 sensor came with 64" of wire, which was way to long for my Vg, I had to tie it up w/ zipz.

How do I put a picture in a post? So I can show you all what I'm looking @.

 

use the "[ img ][ /img ]" tags put the link in the middle

 

http://www.geocities.com/punabrew/pics/01bung.jpg
http://www.geocities.com/punabrew/pics/01full.jpg

 

I didn't do it right. what did I do wrong?

 

you did it right...geocities doesn't allow hot linking, just copy and paste the URL

 

http://www.geocities.com/punabrew/night_vision.html
http://www.geocities.com/punabrew/index.html

 

if the sensor is too short, take a disc grinder and grind off about half that O2 bung. it's waay more than long enough. you only really need about three threads in it so that it'll hold. pull your OE pipe off and take a look at how deep it is.

and yes, the 30" length on the Z sensor should be about right. I've bought several sensors over the last few years, and the wire on the bosch sensor was waaay too long. I cut at least 2 ft of it off and spliced the connector back in.

 

Grinding off the bung might work, butt will it seal up good, the bung has angles like valves (90*, 45*)?
this is how far the little o2 gos in, would that work?

http://www.geocities.com/punabrew/inside.html

 

I just found an adapter that came with the headers, but it is also too big for the stock sensor, what the hell!

 

so do they make it for the ve motor

 

there's a compression type gasket on the sensor itself. it's made to seal against a flat surface. if you grind down the bung, just make sure that the top surface is flat. use a file or sanding block to get it as straight as possible and you won't have any problems at all. done this a few times before.

 

"crush gasket"

oh and do they make it for the ve?

 

I know.. I said it that way for the uninitiated.

 

any pics of the headers

 

i ordered these headers and they look like CRAP. i think that they SUCK... they arent any bigger than the stock ones and the way they are set up i think they wont do anything. so i am sending mine back ... or if anyone wants to buy emm. I didnt install them. i payed $300 + shipping. i would let them go for 300 shipped. they are for the VG and they are coated with that pretective black stuff. so just PM me.
-James

 

anyone here have any real-life stories of the headers actually performing on the car?

 

True, has anyone on this forum installed these yet?

 

Heres a link to VG Headers pics.

http://www.geocities.com/punabrew/photopageceltic.html

 

it seems to me that the "headers" issue is somewhat like the turbo issue: few actually venture into that water. but so many seem to be experts on "how to really do it," or "how they suck."

the problem then arises when, as i have fallen into the same bandwagon on other issues, that the "fact" on the street becomes "everything sucks." so, then, nobody does it.

and i just don't buy it.

someone come forth from the dark shadows and shed some light on things. either way. suck or not to suck.

 

ptuning.com has these headers listed as 1990-1994 maxima all models. which either means they dont know about the se model, or that these headers fit on both the vg and ve, which would take alot to convince me of. Are they worth it, well even if the exhaust flow is completely unchanged. your car will be faster because of the weight difference from the the stock manifolds/ypipe to the headers. if anyone gets confirmation that pacesetter does make a set for the ve, please reply

 

do they make it for the ve?

 

weight difference? are the stock pieces THAT heavy that you'll benefit from their weight loss?

 

LOL!! Weight difference!?!?
Uhhh, a full set of tube headers will likely be just as heavy as the OE log manifold.


and NO, they won't fit VE/VG both. they can't. the manifolds have different bolt patterns, aside from the oval shaped exhaust ports.

 

so they will fit the VE?? you fockers are confusing me

 

ignore him and he'll go away