Forums/Z31P/z31-basics basic-modifications-basic-questions-aka-the-newbie-forum/VG30DE Build
Imported from Z31Performance.com Forums{{#if:kontera| — original post by kontera}}{{#if:2011-04-26 00:41:08|, posted 2011-04-26 00:41:08}}{{#if:32| · 32 post{{#ifeq:32|1||s}}}}{{#if:/Z31performance_archive/forum/z31-basics/basic-modifications-basic-questions-aka-the-newbie-forum/14207-vg30de-build.html|
Local archive: view archived thread on dev.z31library.com}}
kontera: (2011-04-26 00:41:08)
So I picked up a z32 N/A motor and plan on going with an all motor build. So before I start spending money and things that don't need to be done, what do you guys suggest I mod? So far I'm thinking: High Compression pistons, Boring 20 or 40 over, slightly larger injectors, lightweight flywheel mated to a stage 3 clutch, Lightened and balanced crankshaft, and shaving the heads. What else should be added to this list that I haven't thought of? Mind you, this is my first motor build and I will not be doing it alone, so if I dont understand something you mentioned just bear with me.
Thanks
onefast87: (2011-04-26 00:57:58)
add 1 or 2 turbo's, in my opinion its a waste to do a NA full rebuild, but that's just me.
Guest: (2011-04-26 01:03:17)
+1[archived image: smile.png]
kontera: (2011-04-26 01:04:47)
I dont want to go turbo. Ive thought about it over and over again and I came to the conclusion that I want to go all motor
ZFast88Z: (2011-04-26 01:07:24)
Do you have $20,000 to blow?
kontera: (2011-04-26 01:19:19)
Money is not an issue. Its simple. I do not want to go boosted. Or is that the only way you guys know how to make power? If you dont have anything to answer my question with then just dont post.
Careless: (2011-04-26 01:22:19)
88sinZ: (2011-04-26 01:22:39)
OP i lol'ed at your sig pic
[archived image: 179430_498532355778_718710778_6639794_7669504_n1.jpg]
ZFast88Z: (2011-04-26 01:30:44)
Offset grind the crankshaft to reduce stroke, knife edge and polish counterweights. Better yet have a new billet crank made.
Titanium rods to reduce rotating assembly weight.
Custom pistons. 12:1 compression, specificy lightest weight possible
Send the cylinder heads out, have the professionally ported, digitized and then keep the file for yourself. Don't forget oversized valves, preferably in titanium with proper seats and springs.
Camshafts should be custom ground.
Staged injection with individual throttle bodies
Equal length tubular exhaust manifolds
Lightweight flywheel for triple disc clutch. Centralize as much mass as close to the centerline of the crankshaft as possible. A carbon driveshaft wouldn't hurt.
Dry sump lubrication system to assist with crankcase vacuum.
Electric water pump for drag reduction.
He'll run with no alternator, just buy a good battery.
There. NA build for you. Open the pocket book Mr. money is no issue.
Careless: (2011-04-26 01:35:59)
i got a better idea.
start with a vq37. fuck all that noise. have same hp.
ZFast88Z: (2011-04-26 01:38:08)
Lamborghini V10
tert72: (2011-04-26 01:51:47)
it depends.. ya want a strong motor? or ya want it to be fast? if ya want fast you wont get a vg to be fast without turbo, plain and simple. view az bums faq.. how to make a NA fast.. push it off a cliff. now there are a couple on here that have gotten over 200hp http://z31performance.com/forum/viewtop … 13&t=16955
now if 200hp is your goal.. by all means go NA.. if you are trying to get over 300.. good luck.
i had my car NA for 12 years.. bought it back when you "couldnt" turbo an NA.. turbo'ed it last year and cant freaking believe i waited so long.
you want power.. either turbo it or buy a different engine.
260DET: (2011-04-26 02:53:21)
I doubt if you will find any very specific info on what you want because noone does it. Because to get a decent faintly affordable power to weight ratio out of that engine it must be turbo charged. If you must then do the usual - cams, valves, springs, heads, exhaust, pistons, rods, crank, balancer, flywheel and so on. There is no magic NA formula for your engine.
Z31'85MT': (2011-04-26 03:19:23)
The thought of the n/a vg30 is depressing enough without wasting a few thousand dollars just to be disappointed when it's still half the power or a decent turbo swap with a couple more psi of boost… Face it dude, it's what they were born for. N/a vg= .75 vgt. There's the maths. And that's stock numbers baby. Shit when the old dog vg can hold 400hp, I see no point in trying any harder for something sooooo unlikely. You will hate it.
RocklinMike300zx: (2011-04-26 03:53:37)
I notice most people are assuming he has a VG30E when he actually has a VG30DE…Sure it's still no match for a TT but it starts out with significantly more HP than the regular old VG30E and has more HP potential than the VG30E. It also weighs more, but eh I just figured it was worth mentioning since a few posts seem to be under the assumption it's the SOHC and not DOHC.
Chrisw_2003: (2011-04-26 04:08:42)
money is no option, how about a big block hemi out of a funny car! or a 1000ci v8
Z31'85MT': (2011-04-26 04:22:31)
Now we're talkin. Reminds me of this old caddy 500 we bored out… That thing was fucking brutal…
Rick88ss: (2011-04-26 14:43:14)
How much power are you looking for? Let's start there.
Kimbro Slice: (2011-04-26 14:50:53)
I bet a couple of SR20's will pull a premium a week before Race Wars…
tert72: (2011-04-26 15:00:55)
yes i did notice the DE motor and z32 in his write up. i didnt think there was that much difference between the two as far as horsepower.. so like if russ did all he did to the vg30 to the DE how much more horse are we really talking? enough to make a damn difference?
NissanEgg: (2011-04-26 19:33:37)
My buddy has a 92 NA Z32 with the biggest NA JWT cams and springs, UR pulley, APS light weight segmented flywheel, stock rods and pistons, Stillen headers, no cats, HKS hi-power exhaust, Z1 ecu tune, JWT pop-charger air filter, AIV and EGR delete, PCV reroute, AC and PS delete, fresh timing belt/oil pump/water pump and only makes 219whp. That's on stock bottom end and original headgaskets with 237k miles on the engine and has a small oil consumption problem. Add all the prices above to see if you want to go thru the hassle of building a DE NA motor and still be slower than a Z31 turbo or NA2T with a boost controller.
TearingRaven: (2011-04-26 20:08:12)
Then you bought the wrong car. Goddamn ricer.
My DD Civic Si is all motor! MAD TYTE! VTAKATAK!
Kimbro Slice: (2011-04-27 05:29:23)
[quote]TearingRaven wrote:
Money is not an issue.
THEN WHY DO YOU HAVE A Z31?
Then you bought the wrong car. Goddamn ricer.
My DD Civic Si is all motor! MAD TYTE! VTAKATAK!
YOUR VTAKKKKK GOES "BWWWWWWWWWWWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAHHHHHHHHHHH"
stprasinz: (2011-04-27 10:09:31)
forge the bottom, all as light as possible, and balanced as much as possible and 13-1 on pump gas, if you can spend alot more on the fuel system go alcohol, and 15-1 compression… than porting and polishing, large amounts of porting and polishing, don't skimp there, and the oversized valves will help alot… huge cams, stud everything, full ignition upgrade (super hot coils), stand alone engine management, custom intake manifolds, equal length large diameter runner headers (maybe even stepped, to save torque, and build the high hp), then feel the rush of 300+ whp then spray the ever living hell out of it...... If you spent all the same amount, then add 1500 for a good turbo, 700+ all day long..... with no spray, to each his own...... almost forgot, if you spray nitrous, some would say to stay away from alcohol for fuel, as it would be too much cooling to rapidly of the cylinders....... the more you do the less streetable it will be..,..a z31 with a sohc turbo could beat the pants off the vg30de with no nitrous..... with the built de, and stock long block sohc turbo..... but you would be unique as all get up!! good luck with whatever you do....
ZFast88Z: (2011-04-27 21:21:46)
Wow…Please…Stop…Now…
stprasinz: (2011-04-29 00:45:27)
[quote="ZFast88ZWow…Please…Stop…Now…
what'd I do wrong,
not be a sarcastic stick like you? Not make comments of spending outlandish amounts of cash so I make reasonable things to do to the build for it to work well, not mock him? which of the things did I lack doing the most? I thought these forums were here to help people, not make them feel alienated..... Are you a car guy, and just always a dick, or only when someone wants to do something unique??? For some reason this is the road he decided to travel, so encourage it, not discourage…
DwayneLogan: (2011-04-29 01:08:05)
http://www.crateenginedepot.com/stor…P2382C509.aspx
Make it fit.
stprasinz: (2011-04-29 01:14:53)
hes not questioning which motor to build. he's wondering what to do to the vg30de. If he already has the enigne and feels money is no object, to what extent? if it truely is unlimited, what zfats said with all the titanium one off stuff would be the way to go, but I think more reasonable itmes might be the way to go.....
Chrisw_2003: (2011-04-29 02:19:30)
[quote]stprasinz wrote: [quote="ZFast88ZWow…Please…Stop…Now…
what'd I do wrong,
not be a sarcastic stick like you? Not make comments of spending outlandish amounts of cash so I make reasonable things to do to the build for it to work well, not mock him? which of the things did I lack doing the most? I thought these forums were here to help people, not make them feel alienated..... Are you a car guy, and just always a dick, or only when someone wants to do something unique??? For some reason this is the road he decided to travel, so encourage it, not discourage…[/quote]
no one knows what zfast is…
build it and spray it
88sinZ: (2011-04-29 04:21:19)
three pages and i doubt broseph is gonna do anything at all
stprasinz: (2011-04-29 14:26:15)
zfast88z heck, he's in your quote...... sorry, I didn't wriet his full screen name..... Alot of people do the same thing, seems most people figure it out..... anyway. I think the guy mighta gotten shuned enough not to even look here anymore.....
Gusisboosted: (2018-11-02 04:32:03)
Offset grind the crankshaft to reduce stroke, knife edge and polish counterweights. Better yet have a new billet crank made.
Titanium rods to reduce rotating assembly weight.
Custom pistons. 12:1 compression, specificy lightest weight possible
Send the cylinder heads out, have the professionally ported, digitized and then keep the file for yourself. Don't forget oversized valves, preferably in titanium with proper seats and springs.
Camshafts should be custom ground.
Staged injection with individual throttle bodies
Equal length tubular exhaust manifolds
Lightweight flywheel for triple disc clutch. Centralize as much mass as close to the centerline of the crankshaft as possible. A carbon driveshaft wouldn't hurt.
Dry sump lubrication system to assist with crankcase vacuum.
Electric water pump for drag reduction.
He'll run with no alternator, just buy a good battery.
There. NA build for you. Open the pocket book Mr. money is no issue.
Thanks for this........
Im about to blow my trust fund.