well... if the engine is pushing stock power i'm estimating 230-250 ft lb of torque at the crank. i think i may be loosing power due to running so rich though.

 

Congrats man!!!! Cant wait to see the dyno.

 

Finally got my picture up of my boost gauge. I got tired of the stupid flickering clock so I decided to shave off enough material for the 52 mm gauge to fit in.

 

Nice idea. I couldn't cut up my own dash though. Hmmm I do have a spare.

 

i was kind of scared to do it at first because i'm not really good at that kind of stuff but i decided for the best control to keep from taking away too much material i just took a dremel-like air tool. i put a small wire wheel on it so i could shave enough material off for it to fit. that made it really easy.

 

holy green clips in the air vents batman!

That's a pretty good location, dont have to take your eyes off the road as much as you would for a lower DIN gauge panel

Did you order a gauge pod?

 

yeah, i ordered one. i just put the gauge there since i had no place to put it an the clock was really making me mad. i also have the time on my hu so there is no reason for two clocks.

once i get the gauge pod i'll put the more important gauges there so they are easier to watch and i'll put something less important where my boost gauge is now. its a bit out of the way but, like you said, not as bad as something down by the radio.

oh yeah, by the way. those green clips smell really good, lol.

 

Did you get a chance to get it running less rich. Hows it run in general? Youre using an aftermarket fpr right?

 

i turned the fuel down by 20 percent with my s-afc 2 but its still incredibly rich. i think i'm getting around 10-15 mpg. once i get it on the dyno i'll feel much better turning the fuel down.

i have a rising rate fpr by aeromotive and its actually set really low, like 28 psi at idle or so. i almost think these injectors are bigger than what i though. i thought they were 259 cc like the 300ZX but i'm starting to think they are 370 cc like the 300ZX, lol. Z31 and Z32 respectively. its so hard to find any info on this engine that i don't know what injectors it has. i may send them somewhere to get flow tested.

 

If you can pull an injector and get me a # off of it I'll tell you what it's from

 

If you find out the flow please let me know. Unfortunetly I dont read japanese so I cant find crap on this engine. Have you tried plugging in your old ecu just for ****s and giggles?

 

i'm actually going to per the request of the guy who did my eprom. this will tell us whether his settings are working or not on the ecu.

what are the chances of an o-ring going bad on one of these injectors if i pull it out?

 

do you have any idea what rom editor he is using?? and how did he do on the soldering of the new chip?? and I assume he burned a rom similar to your application(stock 300zx) or were any changes made to the stock maps??

 

I hope it ends up being the ecu. I'm going to be using the stock 300zx turbo ecu on my engine so if the injectors are actually bigger than 260ccs I'm going to have to get mine reprogrammed. It would be nice to have bigger injectors to start with but i dont have a way to control them at this point. Does the guy that did your ecu have a website or anything. I'd like to ask him some questions so I might be able to program the ecus myself.

Also, mtcookson, if you end up taking the injectors out would you mind taking some detailed pictures of the injector itself. I'd like to know a little more about them without taking mine out. I'm interested in knowing if I can use the same injectors as the z32. Thanks

 

I'm not positive which one he's using or how he did it but I think he just took the Maxima map and changed the numbers to make up for the larger injectors.

Using the 300ZX ecu will be pretty hard. Mostly just getting the gauges to work will be the difficult part. There are also other things that could be on the Maxima that won't hook up to the 300zx wiring harness and there could be things on the harness that has no where to go on the Maxima. I tried getting a 300zx ecu and harness on my engine but it was really hard and I just ended up getting a new eprom burnt.

I'll try taking the injectors out tonight or tomorrow and see if I can find any numbers. I can probably take these out blindfolded since I've taken the intake off so many times .

 

I'm swapping the engine into my 300zx so it shouldnt be a problem. The only thing I can imagine would be an issue would be the idle control but I rigged up a plate that lets me bolt the Z idle controls on in place of the maxima idle controls. Other than that the engine is the same. I'll worry about the powervalve later once I get the engine running the way I want. At this point the only thing I'm worried about is the size of the injectors. I cant imagine they would be much larger than the turbo Z because the jdm engine is rated at only ~190 hp. I should have pulled the injectors when I had the plenum off but I didnt think about it. Here's a link to some pics of my engine if you guys are interested. http://www.ibconceptions.com/z/upload/thumbs.php

If anyone has a picture of the pins on the maxima ecu I would be interested in seeing if they are close to the 300zx ecu.

 

I'm asking cause I'm wondering if he is using this editor-->
http://www.autoserve.8m.com/ROMEG.html

I played around with it a few months ago, pretty similar to the one I use(Uberdata) with my own ECU in my teg, but a tad more complex...I'm lost at how to scale in larger injectors on there, can't find the multiplier function for it anywhere. If my POS burner was working and I knew what kind of chips to use I'd give it a try.

BTW, if yall are interested in chipping Nissan ECUs here is a short info page-->
http://www.autoserve.8m.com/Nissan.html

 

ahh, ok. I though you were puting one in a Maxima for some reason. Are you putting an N/A engine in or something? Because I'm pretty sure the JDM turbo engine pulls somewhere around 215-230 hp.

Yeah, I bet that's the program he used. It seems to be pretty popular for the Nissan ecu's on the wangan midnight forums. They have a whole section for Nissan ecu's. I think I forgot to answer one of your previous questions. I believe he took my ecu to an electrician or radio shack or something and had them do the soldering. I sent a socket along with the eproms so I could easily toss in different chips in the future.

 

The engine I have is the jdm vg30et that as far as I can tell is out of a Nissan Cedric or Gloria. I've searched for hours trying to find out more details about the engine but so far the only source that I have found says the engine is rated at 195ps. I'm pretty sure 1ps is slightly more than 1hp so the engine is probably around 190hp. Judging from the pictures you have the same engine I do.

There is another vg30et that you can get but its from the jdm 300zx. That engine is rated at 230ps or ~225 hp. It has the 300zx intake and is rumored to have the better cams.

Now the thing to consider on the engines we have is that they were for a 4 door luxury car. I notice on the turbo that came on the engine that it had a smaller exhaust ar of like .40 where the stock US vg30et has one of .46. That leads me to believe that turbo is designed to spool up faster to be more driveable. Its also likely that the smaller ar ratio limits the turbo somewhat and that is why they rated the engine at a lower horsepower. Whether or not the engine comes with the better cams, I dont know.

The important thing is that you're sticking a bigger turbo on it so the factory hp rating really doesnt matter. Assuming that the cams are the same and the compression is the same as the 300zx you should be putting out roughly the same power. Of course at this point it doesnt really matter because you have a turbo maxima and thats just cool.

 

Good luck with it. Are you messing with the Nissan ecu bin right now? Whats a teg? Any suggestions on a eprom burner? Hopefully sometime after early January I'll have some money to buy a burner and some tuning tools.

 

I still want a tune on the fly connector , so I can tune from my laptop

 

naw not messing with any Nissan ECUs yet...that program is kinda buggy, at least on my comp, so its been kinda hard for me to play with it. as far as burners, this is what I use--->
http://www.xtronics.com/memory/EPROM.htm

its cool cause it comes with evrything needs no adpaters for the 29c256 chips and software is easy to use.

Batronix makes another...cheaper and also widely used--> http://www.progshop.com/shop/programmer/index.shtml

I'm hoping to buy a romulator one of these days so I don't have to reburn and can just directly alter the maps in real time on the fly, but right now its pretty good...I'm currently running a Skunk2 "copy cat" n/a program, made my Integra nice and peppy

 

I was thinking about going straight to the romulator setup but I dont have any experience programming the eproms yet. I'd also need some way to get a bin of my original eprom. There is a company that makes a device to monitor and log a wideband o2 sensor as well as some other inputs. If i had a laptop I could get that and the romulator and tune my own car on the fly. No need for dyno time and it would be really damn cool.

 

yup...this is the wideband I'm hoepfully gettting for Xmas, only about $400-450-->
http://www.innovatemotorsports.com/lm1.php

I've been wanting it for about 3 months now. full logging capabilities, RPM tracing, PC interface...after that I'll be set pretty much

 

if you rent that thing out you could make your money back pretty fast to

 

you know it!! but the only prob is the WBO2 senser needs to be permanently installed(meaning you have to have a second bung welded into the exhaust). there is no secondary output to run the WBO2 sensor signal back to the ECU, so you can't eliminate the stock O2 sensor, it has to remain in place as well. if they at least came out with a tail pipe sniffer that can temporarily mount like they use at shops that would be cool

 

dang... i hope its pulling more than 190 horsepower. i put the turbo off of an 84-86 300zx on it so it should hopefully push a little more power. i also have free flowing exhaust an intake so that should increase power too. i guess only a dyno will tell what it is actually pulling though.

whew... i forgot. the Cedric came with 3 engine options, the VG30E, VG20DET, and VG30ET. I bet the 190 hp rating is for the VG30E or VG20DET... hopefully it is anyways.

edit 2: actually, i just found some more info that has the VG20DET listed as pushing 210 ps. hopefully the VG30ET was the best option for the car and pushes more than that... still looking though.

 

well... i just confirmed what you found StinkyZ. this guy has a Gloria and I finally found a picture of the engine bay and it does have our engine in there. He also says it pulls 195 ps @ 5200 rpm and 30 kgm at 3200 rpm. That translates into about 192 hp and about 216-217 ft lb or torque. I feel jipped, lol.

Here's the site with the info listed http://www.geocities.co.jp/MotorCity-Pit/9999/
To make things less confusing you may want to go to altavista.com and translate the site using this http://babelfish.altavista.com/

 

I think thats the site where I got the info that I was talking about. I wouldnt worry about it too much. I'm sure the cams are atleast as good as the vg30 for the US Z so the engine has the potential. I also think the maxima intake would be better for more power. Atleast it looks like it to me. Since you upgraded the turbo the only thing I could think of that would be a problem would be the compression. Hopefully they didnt change that much if at all. I think I might try emailing the guy with that website and see if he could find any info for us.

 

looks like the compression ratio is 8.3:1 according to this site http://www.auto.vl.ru/catalog/22146/

 

Cool. Well then at this point our engine is atleast as good as the US spec Z engine. We can only hope the intake and possibly the cams are better.

Have you ever run the car with the powervalve disconnected? I wonder how much of a difference it really makes.

 

its suppose to help low end. if left open you may lose may a few ft. lb. of torque down low. not sure how noticable it would be.

 

probably not going to change much, but I played with the power valve on my VE on the dyno a while back. ended up losing about 15lb-ft down low.. up until about 4000rpm when it would kick in by the factory.
I tried playing with it coming in at different times to see if I could pick up any power... nope.
Nissan did a damn fine job of picking where the power valve should open, so firing it earlier or later won't net you any power.

 

I was just wondering if it really made a difference. I guess it does so now I need to figure out how to set it off. Since I've got the turbo on there I dont know if its something I can control better with rpm or manifold pressure. Do any of you know if the nissan ecu triggers the powervalve simply on rpm or does it take other things into account?

 

engine load and RPMs and a few other things, but its earily and I dont remember

 

I emailed the guy in Japan asking him about the engine. Here's what I got.
---------------------------------------
Hello.

Your question is difficult for me.

Q.1
Since it investigates one, I somewhat want time.

Q.2
The difference in the power of VG30(in Japan) and VG30(in USA) is based on
the difference in a measuring method. If it has my engine in the United
States, it will be measured with 208ps.
My engine was also written to be 195ps(NET) by the catalog when I purchase
Gloria in 1990.
This NET is the method of measuring, where engine is carried in the body.
It will be set to 230ps if the same engine is removed and measured from the
body.
In Japan, engine was removed from the body those days in 1988, and it had
measured. since -- Z at the time was also set to 230ps
As far as I know, the inside of VG30 engine is the same as the Japanese
specification and United States specification. Moreover, the specification
of the main part of VG30 engine has not changed once from 1985.

I'm sorry since the difficult text was translated with the automatic
translation tool, when a text is unclear.


>From: "Bryant" <brik2k@tampabay.rr.com>
>Reply-To: <test@ibconceptions.com>
>To: <pay31_gloria@hotmail.com>
>Subject: RE: Hello Y31 Questions
>Date: Sat, 22 Nov 2003 09:40:15 -0500
>
>Nice to meet you Hitoshi.
>
>1. I would like to know what size fuel injectors your VG30ET uses. Are
>the
injectors the same size as the VG30ET in the Japanese Z31?
>
>2. The VG30ET in the United States Z31 model is rated near 208ps. The
VG30ET in the Japanese Z31 is rated at 230ps. It is rumored the difference
is because of better camshafts in the Japanese model. Do you know if this
is true? Also, do you know if the VG30ET in your Gloria has the better
camshafts?
>
>I have a VG30ET from a Gloria that I want to install into my 1988 Z31.
>It
is very hard to find any information on the engine. Thank you for all your
help. Bryant
-------------------------------


It's interesting what he says about the way the horsepower is measured. If that is the case then there may be no difference in power. Have any of you heard of this before?

 

IIRC Japanese or european cars were/are intentionally underrated on their horsepower for some reason or another
Dam this senility
Ahh to be young again

 

Alright, I finally got that dang injector out but cost me an upper intake gasket... damn i hate those gaskets. There are two sets of numbers on it. One on the inside being A46-00 and one one the top being 0N04 7X14N with a 1 next to that number.

 

Ok I just gave my guy the # But this one appears to need physical identification.
He'll get back to me a little later if he can give me an exact ID.

 

I think it was called the "Gentleman's Agreement" or something, can't remember