MrGone

iTrader: (30)

Its snowing outside

I need to figure out what order it goes back together and dont want to go outside and check (on my car).

I just cant remember where exactly this white 'ring' goes.

mtcookson

iTrader: (2)

i'm sure you have... but have you checked here? (its the direct link the the tb stuff) http://www.cybrrpartspro.com/Chilton...961CH05_6.html

Aaron92SE

iTrader: (128)

I have no clue what you mean by how the throttle body goes back together, but here are my pics:

http://www.littlebabywebs.com/maxima/tb/tbpage.htm

mtcookson

iTrader: (2)

how much of a gain did you get with the tb porting?

Aaron92SE

iTrader: (128)

Bryan H dyno'd at a 7hp and 13 tq gain. But me personally, being the 1/4 mile freak I am, I think I gained a FULL tenth. It might be more. But I seriously can see .15 being shaved with just porting the TB as much as you can.

Porting the upper and lower intake will only raise the peak HP. But it never hurts by smothing things out a bit and also having a higher rev limiter.

mtcookson

iTrader: (2)

hmm.. i wonder what kind of porting the vg tb can handle. i hate the stupid dual port design. it seems to really limit what can be done to it. i have a spare on laying around i may mess with it and see what i can get done.

Aaron92SE

iTrader: (128)

Dude, it can really help you. I actually noticed a slight gain in throttle response by porting mine. And I'm NA. You can port your TB, just use your best judgement.

I used 1/4" shank bits. Sand paper cartridge rolls work the best. The ones that come in porting kits that Summit Racing sells. They look like a cone shaped roll of toilet paper. Those work better than anything. Then, that deluxe porting kit might come with polishing bits that REALLY do wonders. My TB looked like a mirror almost when I was done. BTW, I got the Deluxe Standard Abrasives porting kit from Summit.

Bill Brasky

iTrader: (2)

i read in my Haynes that theres an anti-sludging film on the VG TB. It said not to remove it...

and when one ports the tb, does one add bigger butterfly plates?

mtcookson

iTrader: (2)

did you taper the porting so it stayed stock size around the butterfly valves or something else? (sorry to steal you thread shawn lol)

Bryan H

i personally used a carbid bit and went to town, if ya do a search there is a full explanation made by me somewhere on here about it.
the dyno gains are correct as to what aaron said, i dynoed before and after the mod. there was also port matching on the intake manifold as well to make ot a useful mod

MrGone

iTrader: (30)

all done, thanks a bunch guys!

MrGone

iTrader: (30)

oh yeah, 5spd manifold comes off tommarrow. this throttle body goes on, and my porting fun continues (but I need to get sanding rolls ( Aaron)).

In those pictures, aaron just kept the stock butterfly plate. I dont believe he's done anything more to the TB since then.

Bill Brasky

iTrader: (2)

hey good thing I can't search!

Aaron92SE

iTrader: (128)

Yes, visit my site and it shows a little drawing i made up after talking to Bryan a long time ago. I did NOT touch where the butterfly seals.

You do not want to change the plate unless you are boring it out at a machine shop. But all you are doing is porting it out. Make it look just like what I have in those pics and make sure that plate still seals perfectly.

Also, you can use a carbide bit like Bryan, but that aluminum is REALLY soft and I don't recommend a beginner using that bit.

Bryan H

i also kept the stock tb plate. before and after the plate are larger, i think i got mine up to 70 mm or so

mtcookson

iTrader: (2)

is this the kit you are speaking of? http://store.summitracing.com/partde...t=SAI%2D260001

MrGone

iTrader: (30)

I believe that would be it, or its very similiar. Aaron sent me the link once before, I have it somewhere.

Also check out harbor freight, they dont have the rolls, instead its just drums, you could get away with it with your throttle body.

Aaron92SE

iTrader: (128)

Anyway, you can port as much as you can off the TB as long as you don't pierce through the other side of the wall. The TB is strong enough. In my pics, you can tell I ported them very thin. Well, atleast the beginning.

Also, about the film that antonthegrey mentioned, I wouldn't worry about that one bit. Just make it smooth as you can and you'll be ok. I've heard some stuff about what he mentioned and some people say harsh cleaners can strip it. Nobody has proven this, so I would say port away.

mtcookson, I KNOW you don't have a problem with porting. So do it. You'll pick it up quicker than you think. Just try your best to make them look as well as mine. Also, really pay attention to waves in the airflow. You want it to be a straight, smooth surface. You don't want the air to go over little bumps or dips.

mtcookson

iTrader: (2)

now that i think about it i have a nifty little honer thingy that i could rig up to port it really well. it has three arms that i can stick sand paper on then i just hook it up to a drill and it will evenly sand away the metal. i might go mess around with my other tb tomorrow. this is really interesting me, lol.

Aaron92SE

iTrader: (128)

Yeah that's the Summit brand. Standard Abrasives sells another kit that's $10 more. I had the deluxe kit, which had everything in it. But that simple Summit brand kit should be plenty.

MrGone

iTrader: (30)

oh yeah, Mark
I think I'd rather port your tb than my VE's.
I just have an easier time with your style.

http://mrgone.homeip.net/images/tb/
Thats from my dads 98 durango. I picked up massive low end (kind of bad poor tires) and extended the power band ~300rpm. The design of the stock intake cuts off at 3300rpm, I got it to pull to 3600rpm, and the throttle response is amazing. I'm also not done with that throttle body yet, and I have to shorten the intake runners by 1" (triangle cuts though, I'll take pics when I do it).

mtcookson

iTrader: (2)

heck... with all this talking about porting i may go and try porting my entire intake system off of my other engine. lots of work to do tomorrow

Aaron92SE

iTrader: (128)

This thread really blew up. And Shawn just asked one little simple question. LOL

You might be able to use a high speed drill. But a variable speed die grinder or rotary grinder does wonders.

Don't mess with a dremel tool. You will go through so many bits. They break easy.

MrGone

iTrader: (30)

Anton, like Aaron said, I wouldnt worry about that film (or 'film' if its even still there ). If you want just come over tommarrow and we can tinker with it (gotta take the mustang down to dads house and pick up the air compressor )

mtcookson

iTrader: (2)

i have some air tools i'd probably use since i can variate the speed really well. my only other choice would be the dremel and i hate that thing. its a one speed so it will go wild if you mess up.

MrGone

iTrader: (30)

It's because of your (helpful ) link

and yeah, the dremel ones kind of wear out fast. Actually I've got one sanding drum that I wore so low its basically just kind of a cloth now. Its really handy for finishing

The funny thing is I dont even use my actual air tools, I only really use the die grinder, and my dad uses his paint gun.

Aaron92SE

iTrader: (128)

Dude, you're set man. Just get that kit'O'bits and you're golden.

Bryan H

awwww, look people are asking aaron questions now. guess when he can't answer something he'll come to me or something. carry on kiddies!

Aaron92SE

iTrader: (128)

HAHA, I know ALL and my 3rd gen the fastest ever. Yes it's faster than your DSM.

-shock211-

iTrader: (1)

mt cookson,
i heard that you can swap the tb from an older 240sx. the tb is much more open and it has the single butterfly plate as opposed to the dual plate that the vg engine has.
apparently all the z31 guys do this mod.

MrGone

iTrader: (30)

3rd gen VG's have throttle bodies that look like this
oo

240sx's (second gen VG's, and 300zx's) have single throttle bodies that look like this
O

does that make any sense? lol

Bryan H

ummm. mid 90 mph is low boost pump gas mode. im never on that since i sold it!.

which dsm are we speaking of? my gsx or tsi i had?

you're not running mid-low 14's yet spanky!. but i can help ya get there. well actually i can't because you have more mods then i did when i ran the 14.3 on motor. hahahha auto SuX0r

MrGone

iTrader: (30)

oh noes

not supposed to say auto sucks or anything like it around Aaron

Bryan H

well considering i helped him through the tb bore i think i have some leway with him in kickin em in the junk a couple times

true you can't shift as fast as an auto, but i came damn close!

Aaron92SE

iTrader: (128)

I was just messing with ya man. I have no clue which DSM you had.

But don't say I can't do anything in my car b/c that motivates me to go faster. And sure, PLEASE help me get faster. I have some big plans that are in the works right now that could give a 20+HP gain. Custom upgraded ECU I refuse to go JWT. I can't say much b/c it's not quite up and running yet. But when it is, hopefully by the beginning of next week, I will release it to the world. VE owners and ONLY VE owners will be VERY pleased with my results.

MrGone

iTrader: (30)

I already am very pleased with your results.

(your using the one that requires a lappy right? and you get to adjust your redline right? I envy you).

hey Aaron, I betcha you cant make your car weight 2800lbs with driver (please prove me wrong)

Aaron92SE

iTrader: (128)

I won't be able to make my car that light. Well, it's possible, but I'm not going to do it.

Yes, I will get the software to load on my laptop that will allow me to "emulate" the EPROM. Which will allow me to change ignition timing maps, fuel maps, injector pulses, spark strength, rev limiter, MAFS voltages, top speed limiter, VTC release point, and you can install up to 7 extra sensors and datalog the results, like coolant temp, fuel temp, any pressure, EGT, wideband o2 sensor, etc.

All data can be logged for further reference. So, basically, you can tune your car 100% without ever stepping foot on a dyno if you have a wideband o2 sensor that you can log the results. Which is $250 more. Without it, you can only sorta guess how rich or lean you are running.

Sorry, I had to spill the beans. I didn't want to say anything b/c it's not working yet. But it WILL work.

mtcookson

iTrader: (2)

i've been looking into getting something like that. i still need to learn how to program the eprom though. well, basically i only have to learn hex and all of that crap then i can program my own stuff.

did you get something like this? http://www.xtronics.com/memory/romutator.htm

Aaron92SE

iTrader: (128)

No I got the Zemulator made for z32s. Check out that link you sent me. You don't have to learn hex and other crap like that. It comes with a couple programs made for the VG30DE. Then you can alter them to match YOUR tuning needs.

internetautomar

iTrader: (30)

sheesh I hate being broke.
I wanta zemulator.
Of course I can also pare down the weight on my car very easily.
and I'm a featherweight too.