Forums/Z31P/z31-basics basic-modifications-basic-questions-aka-the-newbie-forum/Stock Crap that can be removed
Imported from Z31Performance.com Forums{{#if:Matt89| — original post by Matt89}}{{#if:2009-05-04 04:35:25|, posted 2009-05-04 04:35:25}}{{#if:32| · 32 post{{#ifeq:32|1||s}}}}{{#if:/Z31performance_archive/forum/z31-basics/basic-modifications-basic-questions-aka-the-newbie-forum/7356-stock-crap-that-can-be-removed.html|
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Matt89: (2009-05-04 04:35:25)
Every day now i see some noob who is staring at his stock engine bay full of Nissan smog glory and wandering what he can remove to make it easier to work on. Im going to make a list of what can be removed and still retain basic functionality of the VG30. Lots of people will not agree with what i put here for what ever reason etc. This is what can be removed/relocated in the z31 engine engine bay to clean things up and make it easier to work on. Note: You will not be smog legal if you follow my advice because lets face it if you have to smog test your 80's car you suck at life anyways.
The list:
A/C system
Idle controls, cold start valve and all associated lines and piping
EGR
AIV system
Cruise control
Vacuum canister
Charcoal canister
Windshield washer crap that most likely leaks anyways
All the stupid vacuum hardlines that cross over the front of the motor
On a NA vg30 you can reduce your vacuum lines down to one that goes to the FPR.
Power steering-i actually like my PS so its staying
Anything that you remove from your stock car will have a sacrifice in some way or another. DON'T just start ripping shit off your car just because you get excited after seeing this thread. Think it out and decide exactly what you do and dont need/want.
DeleriousZ: (2009-05-04 16:25:08)
under 'writeups'
Matt89: (2009-05-04 20:19:13)
Bum thanks for elaborating on that. I wanted to do that last night but was too tired. About the comment i made regarding the smog tasting it was a joke so don't take people too seriously. I am by no means telling people to start ripping shit out of their car for no reason. I am just presenting info and people can do what they want with it. I have removed everything on that list except for the power steering which i am keeping. The reason i did remove everything was to free up space in the engine bay because when you have a car that you are constantly working on and making improvements too it can really get in the way. I have had the motor out 4 times so far this year to give you an example.
Reducing the amount of vacuum lines and vacuum operated systems is very helpful on a turbo car running much higher boost than factory. You end up with reliability issues when lines and other ancient equipment that is designed to see low boost gets hit with 28 pounds. Lines get blown off and leaks start to appear.
OK85ZX: (2009-06-07 23:56:24)
I've taken all of that out plus some, and will soon be going through the entire harness removing any wiring/connectors not used to further clean up the mess that is the stock bay… If this were my daily driver I wouldn't remove any of the AC/Cruise/comfort items etc, but since it is more a fun/weekend/cruise/racing car I am more than happy to have all of it removed if for only the fact of how much it cleans up the bay and makes everything easier to do. I would do it all again if I had to start over on a clean chassis too. Not to mention if you take out all the engine bay canisters/hvac stuff, you can remove enough under dash equipment to hide a full grown man.
I kept PS too because turning 255+ summer tires on a wet rack without PS is probably more annoying than driving an ACT 6 puck in a parking lot.
james: (2010-12-14 23:49:12)
I also removed the water lines from the throttle body and looped them over & same with the Plenum
Removing all the stuff above has made the engine bay much easier to work on, much less piping and a lot less connections and joins.
My motor is recently rebuilt & dosn't breathe too much so i have filters direct on the valve covers.
It is worth noting that I live in NewZealand and here we can get evey type of weather in a day it varies quite a lot.
One minute its 25deg c and then all of a sudden its 5 deg c. My Idle is set off the throtle body and its stabe at 850rpm
( with the regind cams that just where this motor likes to sit )
here is a picture of how it looks
[attachment=1:3fwr6jno]100_1323.JPG[/attachment:3fwr6jno]
[attachment=2:3fwr6jno]100_1321.JPG[/attachment:3fwr6jno]
[attachment=0:3fwr6jno]100_1322.JPG[/attachment:3fwr6jno]
perna00: (2010-12-21 01:57:10)
other misc parts that can be removed for weight and space, as az said; some fuctions are lost:
watercock from heater hoses
additional coolant lines (throttle body, upper plenumn, turbo)
plenumn cover
vac tank (hook system directly to manifold to retain functions except in boost)
headlight washer motors
injector cooler fan
clutch fan (w/ e-fan)
fuel pressure regulator solonoid
fuel pressure regulator solonoid control unit (under battery)
pcv system (cap off intake lines but vent valve covers)
unused relays
brake master cylinder heat shields
(definately not a perfect picture but shows ease of working on it and spaced gained)
http://i94.photobucket.com/albums/l119/ … 0_0935.jpg
michaelp: (2010-12-21 04:58:10)
[archived image: SANY2777.jpg]
Lack of EGR, Idle controls, cold start valve, FPR Solenoid, Heater Water Cock, Cruise…etc Its awesome. Car runs fine IMO, starts up first shot, hardly cranking over before firing…with a blown headgasket.
180sx: (2011-01-17 17:25:12)
came across this while looking for this exact topic. Did any of this trip the CEL? Thanks!
Jose
MrFishHat: (2011-01-17 20:09:33)
We don't have a check engine light. We only have a "your car has more then the mileage recommended to trust the factory o2 and it should be replaced and cut this wire light".
michaelp: (2011-01-20 03:51:21)
Cali emissions carss have cels atleast 87 to 89 for the egt and leaky injectors
TeamRonin: (2011-03-07 05:47:44)
Can anyone tell me the process to rid the carbon canister? ive noticed a fuel vent line runnin to it and lil a skeptic. Also what is all that junk on the front driver side of the engine? seems like an air pump or smog pump with solenoids and sensors. In addition how can i remove the blower motor housing with all those wires there? is there any importance i should be aware of? Really im lookin for a write up to rid most of this stock junk, build performance, clean engine bay, and see what kind of engine status i get by free'n up all this space. Anything is greatly appreciated. I have an 88T. Already rid the entire heater core, vents, ac unit, evap, condensor, high psi lines, small vac canister, cruise control, etc. freed up a lot of room underneath dash and some in engine bay. thanks again for all the help!
CruiserZ31: (2011-03-07 06:17:20)
The writeup is on tbo's site but the only address I can find for that is bad. http://tboz.no-ip.com:10000/
anyone else have it?
TeamRonin: (2011-03-08 04:42:13)
yea i got it! thanks! just tired last night and over looked it. Very helpful. I want to know a little more what to expect when i remove these items, such as setting the proper idle to ya needs, things to watch for when these mods are performed, etc., looking for useful information on these parts what they do, how they work, things to look for while performing this work, how it is on fuel and air mixture, and what to be on the look out if something bad happens. I mean they are there for a reason and just curious on operation and what happens when blocked. Thanks for all the info. My 88T is coming a loooong way due to yall on Z31Performance and Zdriver.
Lemons Z31: (2011-03-29 08:13:44)
So on our race car I think I've removed lot of this stuff already, though not being a true Z Guy just loving driving this one and toying with it. I don't know a ton about them and their mechanicals. As in I don't know what or where some of this crap is. LOL. So any help would be appreciated.
The list:
A/C system gone this stuff was obvious
Idle controls, cold start valve and all associated lines and piping no idea what or where this stuff is
EGR gone also easy to identify and remove
AIV system what in the heck is that
Cruise control deleted
Vacuum canister took out one small one right behind the pass. headlight
Charcoal canister think this is the big one behind the headlight on the pass side but doesn't it link to the gas tank.
Windshield washer crap that most likely leaks anyways long gone
All the stupid vacuum hardlines that cross over the front of the motor know where they are but really you can take those out.
On a NA vg30 you can reduce your vacuum lines down to one that goes to the FPR. this is what we have but don't know waht an FPR is
Power steering-i actually like my PS so its staying ours is goner
Thanks for the help, also if you can tell me about anything else that can go bye bye will be happy to. [archived image: biggrin.png]
manrossdamn: (2011-03-31 13:59:35)
Any update on the Power Steering removal?
I wanna do it to mine since my pump and everything is out.
cerealwars: (2011-03-31 17:23:49)
viewtopic.php?f=24&t=25258
ZEricMZ: (2011-04-11 18:30:17)
Im just wondering so I can start on my a/c removal, does anyone have the belt size for the pulley after you factor out the a/c pulley being gone?
Matt89: (2011-04-12 03:09:24)
If you feel the need to ask for further info than what is posted in this thread about removing components then you should really leave your car alone.
alexbre00: (2011-04-12 03:18:44)
i just wanted to know if there was a different thread for the n/a vacuum removal
midorizx: (2011-04-12 20:22:04)
what would happen if I totally removed my intake collector, idle-up solenoid valve and FICD? I noticed some other people removed it altogether and blocked it off.
I have a reason.
tatsu: (2011-05-15 14:21:50)
Pretty cool, I know what I'm gonna do to my z once I get it from my friend haha
vgterian94: (2011-06-23 14:40:21)
With both of my cars apart, I had forgotten where the coolant lines from the turbo are supposed to go if the plenum coolant hardlines were bypassed.
Using TBO's setup, can I connect the coolant hose from the lower intake plenum to go into one line of the turbo, and then connect the coolant from the heater-hose 't' to the remaining turbo coolant line.
If the turbo coolant lines feed off the plenum hard-lines, then the above should be should work.........?
demonics12: (2011-08-08 05:36:00)
so, if i wanted to swap a pathfinder manifold on, i could block off everything?
idk if anyone knows, just thought id ask [archived image: smile.png]
michaelp: (2011-08-08 05:45:28)
yes, I run 0 idle controls or EGR or anything on the intake on my 84.
demonics12: (2011-08-15 07:22:12)
sounds great, ill see if it fits under the stock hood then [archived image: smile.png]
slammedfc: (2011-12-12 05:27:46)
Considering nobody has complained or argued against the iac valve removal it's a good option?
I have a large pile of stuff for a project i'm working on and if i so choose to use a stock ecu, it's able to compensate well for idle/cold start?
Stock injectors/maf?
I've removed it on my cars and a few friends cars and all i had to do was adjust the throttle stop. Still, i was at the mercy of air density and temperature. If it was too cold or humid, i had either starting issues or idling issues depending on car. Not all ecu programming is the same. That's why i ask.
Thanks. And if my post doesn't belong here you're welcome to have it deleted.
FrozenZ: (2012-08-06 20:23:47)
In case anyone is wondering:
A/C removal from the firewall forward*: 42 pounds.
Removing the cruise control: 3 pounds.
Seeing daylight in your engine bay: priceless.
- Including all lines, compressor, mounting bracket for the idler pulley, condenser. Not including the compressor bracket (because my alternator's hanging from the bottom of it) or up to 1.5lbs of refrigerant and maybe a pound of fasteners.
tatsu: (2012-08-06 21:00:07)
i removed all AC firewall forward, and power steering..with a 2+2 with T-tops i sit right around 3050lbs on the scale
I removed ALL the heating and AC and i need to get my car re-weighed
Axel kain: (2012-08-07 03:38:59)
Let me just say what I do have. Idle control.
No- a/c. P/s, aiv, cat, pre turbo plumbing, tps, egr, or coolant piping above the lower intake mani. Runs great! Drives nice too!
tatsu: (2012-08-07 11:04:11)
Once i get my motor out im going to block off the plenum stuff that i don't use..my car happily idles at 800rpm with no help
though my last dyno run made it to where my car doesn't want to idle anymore…no idea why…
FrozenZ: (2012-08-07 15:49:29)
edited because tatsu had a point (that wasn't about z31s).
tatsu: (2012-08-07 16:10:14)
I have other reasons to pull the motor, other then blocking off the plenum. its eating oil so im going to rebuild it
you kinda sound like AZ-Bum jr