V8 Engine swap - Nissan Forum
Z31 300ZX(T) 1984-1989 Zs - Engine and Chassis Discussion

Reply
 
Thread Tools Display Modes
#1 Old Feb 1st, 2006, 12:52 PM
Nissan Enthusiast
 
Join Date: Oct 2005
Posts: 67
V8 Engine swap

I'm planning on starting about the hardcore work/modding on my 86 Z31. I'm planning on swapping it with some type of v8. Does anyone know of some resources, or have personal preferences on a really good engine to throw in there? It's my main car, and i live in calli, so it MUST pass smog. (i know that's alot to ask.)

dale
Sponsored Links
Advertisement
 
#2 Old Feb 1st, 2006, 02:13 PM
ZPOOLNZ
 
Join Date: Mar 2004
Location: Knoxville, Tennessee
Posts: 1,609
Send a message via AIM to JAMESZ Send a message via MSN to JAMESZ
HybridZ.org will have the most information. Drop an LS1 in there.

Zpooled Zo Zya
#3 Old Feb 1st, 2006, 02:45 PM
I Live Here
 
Zen31ZR's Avatar
 
Join Date: Mar 2004
Location: Denver, Colorado
Posts: 3,785
Send a message via AIM to Zen31ZR
A properly built turbo engine will smoke an LS1, and for a lot cheaper. I met a LS1 powered Z31 guy at the track and showed him tailight twice in a row. Also a V8 powered RX7 and a V8 Porsche 911. V8s aren't all you think they are. If you really want a V8, go buy a Camaro. Please don't make the Z31 something less than it originally was. If you want to pay $10,000 just for an LS1, go right ahead. I can build a complete turbo car for that much.....

*opens can of worms, steps back*

1992 Yamaha FZR 1000. 145 Hp, all stock..
#4 Old Feb 2nd, 2006, 11:04 AM
ZPOOLNZ
 
Join Date: Mar 2004
Location: Knoxville, Tennessee
Posts: 1,609
Send a message via AIM to JAMESZ Send a message via MSN to JAMESZ
Quote:
Originally Posted by Zen31ZR
A properly built turbo engine will smoke an LS1, and for a lot cheaper. I met a LS1 powered Z31 guy at the track and showed him tailight twice in a row. Also a V8 powered RX7 and a V8 Porsche 911. V8s aren't all you think they are. If you really want a V8, go buy a Camaro. Please don't make the Z31 something less than it originally was. If you want to pay $10,000 just for an LS1, go right ahead. I can build a complete turbo car for that much.....

*opens can of worms, steps back*
Actually I could of put an LS1 with supporting mods in my car and it be just as fast for cheaper then my VG30ET build. An LS1 converted car is a solid 12 second car with a stock LS1...and we all know the LS1 responds REALLY well to mods. And V8s really are more then you'd thing displacement wins+aftermarket support. The Z31 is NOTHING in original form...it sucks as far as sports car performance is concerned, and it isn't rare. On top of it all the LS1 weighs less then the VG30ET and makes more power cheaper.

Zpooled Zo Zya
#5 Old Feb 2nd, 2006, 09:32 PM
Z31 know-it-all
 
AZ-ZBum's Avatar
 
Join Date: Nov 2004
Location: Valley of the Sun, Arizona
Posts: 1,023
Send a message via AIM to AZ-ZBum





Disclaimer:
One thing you'll find about me is that I can be very helpful to people who take their time to ask complete questions with good grammar and punctuation. I'm also a real ass to people who don't show at least a little effort in their posts.
Z31 Registry
Z32 Registry
#6 Old Feb 3rd, 2006, 08:34 PM
I Live Here
 
Zen31ZR's Avatar
 
Join Date: Mar 2004
Location: Denver, Colorado
Posts: 3,785
Send a message via AIM to Zen31ZR
That's a TPI engine, not an LS1. I could get one of those for $1500. Nice engine, but it's no LS1. No, for 1/4 the price of an LS1 you could get an RB, and at least have a proper Nissan engine. The only thing that belongs in the Z31s engine bay. V8 swaps are a cop-out, and entirely too common. Mostly done by low intelligence backyard mechanics that can't understand the concept of turbo and OHC technology.

1992 Yamaha FZR 1000. 145 Hp, all stock..
#7 Old Feb 3rd, 2006, 08:43 PM
I Live Here
 
Zen31ZR's Avatar
 
Join Date: Mar 2004
Location: Denver, Colorado
Posts: 3,785
Send a message via AIM to Zen31ZR
Quote:
Originally Posted by JAMESZ
Actually I could of put an LS1 with supporting mods in my car and it be just as fast for cheaper then my VG30ET build. An LS1 converted car is a solid 12 second car with a stock LS1...and we all know the LS1 responds REALLY well to mods. Its made of aluminum. Under boost, goes BOOM. Responds well to NA mods maybe, but it has fairly low limits. And V8s really are more then you'd thing displacement wins+aftermarket support. RB plus mods, blows LS1 away. And the aftermarket support for the RB makes the LS1 look like the VG30 The Z31 is NOTHING in original form...it sucks as far as sports car performance is concerned, So why do you have one, go buy a Camaro then. and it isn't rare. 10 times rarer than the Camaro. I can see you need some lessons in Z31 history and unit production. Go read some. On top of it all the LS1 weighs less then the VG30ET and makes more power cheaper.More power intially, but so what. And mods for the LS1 aren't cheap. A $1500 cam is cheap? $900 throttlebody? You need to get up to speed on LS1 mods costs.
V8 swaps are weak. That's my final word on the subject.

1992 Yamaha FZR 1000. 145 Hp, all stock..
#8 Old Feb 4th, 2006, 01:20 AM
Z31 know-it-all
 
AZ-ZBum's Avatar
 
Join Date: Nov 2004
Location: Valley of the Sun, Arizona
Posts: 1,023
Send a message via AIM to AZ-ZBum
Quote:
Originally Posted by Zen31ZR
That's a TPI engine, not an LS1. I could get one of those for $1500. Nice engine, but it's no LS1. No, for 1/4 the price of an LS1 you could get an RB, and at least have a proper Nissan engine. The only thing that belongs in the Z31s engine bay. V8 swaps are a cop-out, and entirely too common. Mostly done by low intelligence backyard mechanics that can't understand the concept of turbo and OHC technology.
That's why the new Z06 is still a pushrod engine, right?

And I don't care if it's TPI, crossfire, LS1, LS6, or anything else. The basic size of the engine is the same. It fits. It fits nicely. There is still a lot of room to work on it. And it can (you're right, very rarely) be done well. Please note that this car still has AC (appears to anyway) and cruise control.

Disclaimer:
One thing you'll find about me is that I can be very helpful to people who take their time to ask complete questions with good grammar and punctuation. I'm also a real ass to people who don't show at least a little effort in their posts.
Z31 Registry
Z32 Registry
#9 Old Feb 4th, 2006, 10:29 AM
I Live Here
 
Zen31ZR's Avatar
 
Join Date: Mar 2004
Location: Denver, Colorado
Posts: 3,785
Send a message via AIM to Zen31ZR
Quote:
Originally Posted by AZ-ZBum
That's why the new Z06 is still a pushrod engine, right?
It's a pushrod engine because the manufacturer beleives there is still merit in pushrod engines.... GM is a bit low tech, even Ford has seen the advantages of OHC engines. The 95 ZR1 had the same Hp, out of the QOHC LT5 (Not even built by GM, because they didn't have the capability). Sad that GM had to wait 8 years to get back to that same level with a pushrod engine....

1992 Yamaha FZR 1000. 145 Hp, all stock..
#10 Old Feb 4th, 2006, 11:21 AM
Z31 know-it-all
 
AZ-ZBum's Avatar
 
Join Date: Nov 2004
Location: Valley of the Sun, Arizona
Posts: 1,023
Send a message via AIM to AZ-ZBum
Quote:
Originally Posted by Zen31ZR
It's a pushrod engine because the manufacturer beleives there is still merit in pushrod engines.... GM is a bit low tech, even Ford has seen the advantages of OHC engines. The 95 ZR1 had the same Hp, out of the QOHC LT5 (Not even built by GM, because they didn't have the capability). Sad that GM had to wait 8 years to get back to that same level with a pushrod engine....
1993 Corvette ZR1:
engine: LT5 V8
valvetrain: DOHC 4 Valves/Cyl
displacement: 5727 cc / 349.5 cu in
compression: 11.25:1
power 302.0 kw / 405.0 bhp @ 5800 rpm
hp per litre 70.72 bhp per litre
torque 522.0 nm / 385.0 ft lbs @ 5200 rpm
redline 7200

2004 Corvette Z06:
engine LS6 V8
valvetrain OHV 2 Valves / Cyl
displacement 5665 cc / 345.7 cu in
compression 10.5:1
power 302.0 kw / 405.0 bhp @ 6000 rpm
hp per litre 71.49 bhp per litre
torque 542.33 nm / 400.0 ft lbs @ 4800 rpm
redline 6500

2006 Corvette Z06:
engine Cast Aluminum LS7 V8
valvetrain OHV, 2 Valves w/Cyl
displacement 7011 cc / 427.8 cu in
compression 11.0:1
power 372.9 kw / 500 bhp @ 6200 rpm
hp per litre 71.33 bhp per litre
torque 644.01 nm / 475 ft lbs @ 4800 rpm
redline 7000

Source: http://www.supercars.net

Yeah. Because having more HP per liter in the pushrod is such a huge disadvantage.

There are positives and negatives to all different head designs. SOHC, OVC, DOHC, 2, 3, 4, 5, or 6 valves per cylinder.

There is no one single RIGHT way to do it. If there were, all engines would be the same number of valves and the same type of valvetrain.

Disclaimer:
One thing you'll find about me is that I can be very helpful to people who take their time to ask complete questions with good grammar and punctuation. I'm also a real ass to people who don't show at least a little effort in their posts.
Z31 Registry
Z32 Registry
#11 Old Feb 4th, 2006, 04:50 PM
ZPOOLNZ
 
Join Date: Mar 2004
Location: Knoxville, Tennessee
Posts: 1,609
Send a message via AIM to JAMESZ Send a message via MSN to JAMESZ
Quote:
Originally Posted by Zen31ZR
V8 swaps are weak. That's my final word on the subject.
If you think they are weak you're wrong. The LSx's have a MASSIVE aftermarket especially here in the states; the RB does not. Talk about Vette mod costs do you realize what it costs to mod an RB in the states? And once you mod the RB do you realize how impossible it is to tune it here? The management systems are ridiculously expensive and there are VERY few places that can tune them/have the rights to the software.

As for my knowledge it isn't lacking at all. Go look at the production numbers yourself. The Z31 has the highest production numbers of any Z. Outside of a 50th, Shiro, or 89 they are not rare by any stretch of the word. The 84-86 NAs are everywhere.

Don't question me on my ownership of my car. I love it, but stock it was nothing to brag about at all, in fact it sucked, but it is a good platform to mod from. I wouldn't buy a camaro either even though I would like an LS1 SS, I'd get a Vette (the next car will be a C6 Z06).

The LS1 isnt going ski high under boost. 500rwhp sees the end of the cast pistons, but change those out and that motor will be good for whatever I want.

Zpooled Zo Zya
#12 Old Feb 4th, 2006, 08:44 PM
Z31 know-it-all
 
AZ-ZBum's Avatar
 
Join Date: Nov 2004
Location: Valley of the Sun, Arizona
Posts: 1,023
Send a message via AIM to AZ-ZBum
HEY! The Z31 was an impressive car for its day. But that was 20 years ago.

Disclaimer:
One thing you'll find about me is that I can be very helpful to people who take their time to ask complete questions with good grammar and punctuation. I'm also a real ass to people who don't show at least a little effort in their posts.
Z31 Registry
Z32 Registry
#13 Old Feb 4th, 2006, 08:49 PM
Nissan Enthusiast
 
Join Date: Sep 2005
Location: NY
Posts: 111
Letís look at LS or even an LT1 motors this way. You get gobs of torque and as much HP as you want, relatively cheap. You could turbo; super or centrifugal supercharge either one of them. You are looking at 5 without and 15 with intercooler on stock internals. Itís been done plenty of times. At 15 pounds, you would be looking at about 750-850 rwhp depending on the tuning. Working on either motor is a nightmare. If you thing VG30DE is hard to work on, try to change spark plugs on LT1. Both engines are big so no room in the engine bay. Aftermarket for either motor is HUGE! You could find LT1 for under a thousand but itís not my favorite. I would look for LS1 or better yet LS6. Iíve seen LS6 together with T-56 going for 4k. Youíd need to figure out how to mate transmission in the different part of the car because on the Vette itís on the back, before rear end.
LS1 could be found for 2k with transmission. Thereís no shortage of racked Camaro and Firebird. Kids donít know how to handle the speed.
Let me make my position on these cars very clear. I am sure there are fast RB based cars out there, and I am sure same amount of HP could be squeezed out of build 4 banger, but guys, common. Last time Iíve raced turbo civic, he was 3 cars behind by the top of second gear.
If I didnít live in NY with its constant traffics and a ft. deep potholes, I would be driving a LS1 or LS6 Bird or Maro. Unfortunately, I do live in this god-forsaken shithole, so I drive a better suited for the city car 300zx. If you do this swap, better have good brakes!
snowcrash1984 is offline  
#14 Old Feb 4th, 2006, 08:55 PM
Nissan Enthusiast
 
Join Date: Sep 2005
Location: NY
Posts: 111
Zen, you arenít correct about pricing on LS1 parts. Yes, NSX intake manifold is about $800 but cams are much cheaper. Most people by the way use LS6 manifold that could be gotten for $250. It flows better. Same thing as Holy, just cheaper.
http://www.jegs.com/webapp/wcs/store...0015&langId=-1
snowcrash1984 is offline  
#15 Old Feb 5th, 2006, 01:19 AM
ZPOOLNZ
 
Join Date: Mar 2004
Location: Knoxville, Tennessee
Posts: 1,609
Send a message via AIM to JAMESZ Send a message via MSN to JAMESZ
Quote:
Originally Posted by AZ-ZBum
HEY! The Z31 was an impressive car for its day. But that was 20 years ago.
For an 80s car it has decent performance, but the problem is it isn't the 80s anymore.



I fixed the problem by updating mine haha...

Zpooled Zo Zya
Reply

  Nissan Forum > Nissan Z > Z31 300ZX(T)
Related Reading: V8 Engine swap

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Nissan Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



  Similar Threads
Thread Thread Starter Forum Replies Last Post
Engine Swap 2wd ~ 4wd 4x4munster Truck & SUV 0 Sep 27th, 2005 01:19 PM
86 z31 engine swap help, i am not asking what engine to swap into my car ilovenissan Z31 300ZX(T) 9 Jul 26th, 2005 11:39 PM
turbo or engine swap ! viciousxp B13 91-94 chassis 14 Jun 1st, 2004 09:47 PM
'90 GA16I engine to '86 B11 swap work? BluEyes B11/B12/KN13 82-90 chassis 18 Sep 2nd, 2003 08:32 PM
S13 engine swap question GA15 S13 240SX 1989-1994 7 May 7th, 2003 05:32 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On