Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Reply
 
Thread Tools Display Modes
Old 10-11-2010, 04:33 PM   #1
t12tninja
Intake
 
Join Date: Jul 2010
Location: texas
Posts: 40
t12tninja is on a distinguished road
Default can someone tell me the difference between a 1jz and a 2jz

it would help if you include states of boost and hp. im thinking about swaping but dont know the diffrence
t12tninja is offline   Reply With Quote
Old 10-11-2010, 07:30 PM   #2
Sonyps307
Lexus & 550's
 
Join Date: May 2010
Location: Baltimore
Posts: 526
Sonyps307 is on a distinguished road
Default

I think 1jz is 280hp and 2jz is 320hp and the 2jz has better longer lasting turbos But I think the 1jz is an easier swap and both bottom ends can take 900hp and both valve trains can take 600hp Kind of the same motors with diff. Turbos
Sonyps307 is offline   Reply With Quote
Old 10-12-2010, 07:00 PM   #3
kamikazemkiii
3" Exhaust
 
Join Date: Mar 2009
Location: raleigh
Posts: 138
kamikazemkiii is on a distinguished road
Default

1jz 2.5L
2jz 3.0L
kamikazemkiii is offline   Reply With Quote
Old 10-12-2010, 07:45 PM   #4
87TT
Intake
 
Join Date: Sep 2009
Location: Winnipeg MB
Posts: 45
87TT is on a distinguished road
Default

2jz is a 3.0L and the 1jz is a 2.5L
1jz has 276hp & 268lb-ft of torque
JDM 2jz has 276hp & 318lb-ft of torque
American 2jz has 320hp & 315lb-ft of torque
Someone said that the turbos on the 2jz are better but as far as I know that is only true for the american models. The JDM models come with ceramic turbos
I have gone through this same process but I think that in the end the 2jz is the better engine
It was built off of the 1jz and so they improved on it plus the extra displacement means it will take less to yield higher horses and you can peak it higher
If you decide to go for the 2jz it will definitely cost you. Especially if you want a manual tranny
This knowledge is just based off of what I have learned while trying to figure out myself if the 2jz was worth it. In the end I decided I just wanted to go for the best engine possible and so the saving began. lol
Good luck



By the way, I can't even find an American 2jz for sale on Ebay. Only the JDM versions tend to go but it's an AWESOME engine

Last edited by 87TT; 10-12-2010 at 07:57 PM.
87TT is offline   Reply With Quote
Old 10-12-2010, 11:55 PM   #5
907mge
20psi boost
 
907mge's Avatar
 
Join Date: Dec 2009
Location: Harrisburg
Posts: 759
907mge is on a distinguished road
Default

From what I understand the 1jz has a higher reving head. If you search you may find what they call a 1.5jz that is a 2jz bottom with a 1jz head.
907mge is offline   Reply With Quote
Old 10-13-2010, 02:03 AM   #6
suicidal
Stock
 
Join Date: Dec 2009
Location: goldsboro nc
Posts: 20
suicidal is on a distinguished road
Default

what is the redline for the 1j?
__________________
tokico shocks, drilled rotors, race pads, stage 2 clutch, full exhaust, custom intake (filter and pipe)
suicidal is offline   Reply With Quote
Old 10-13-2010, 02:34 AM   #7
907mge
20psi boost
 
907mge's Avatar
 
Join Date: Dec 2009
Location: Harrisburg
Posts: 759
907mge is on a distinguished road
Default

I found this

http://www.240sxforums.com/forums/hy...rodject-3.html
907mge is offline   Reply With Quote
Old 10-13-2010, 02:40 AM   #8
btwilson86
Super Moderator
 
btwilson86's Avatar
 
Join Date: May 2007
Location: Billings, Montana
Posts: 1,034
btwilson86 is on a distinguished road
Default

from what I can see it's at 7000 rpm with a limiter at 7250.

BTW, "Google" is your friend. You can use it to search common information like horsepower stats, displacement, and red lines. The info I found here was the first website listed when searching "red line 1jz engine".
__________________
1989 7MGTE R154 Targa Top White Package w/Blue Interior
Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels
btwilson86 is offline   Reply With Quote
Old 10-14-2010, 04:20 PM   #9
t12tninja
Intake
 
Join Date: Jul 2010
Location: texas
Posts: 40
t12tninja is on a distinguished road
Default

thanks for all the help guys
t12tninja is offline   Reply With Quote
Old 10-25-2010, 08:10 AM   #10
bioskyline
3" Exhaust
 
Join Date: Oct 2010
Location: powell river bc
Posts: 120
bioskyline is on a distinguished road
Default

Quote:
Originally Posted by 907mge View Post
From what I understand the 1jz has a higher reving head. If you search you may find what they call a 1.5jz that is a 2jz bottom with a 1jz head.
the 1jz head flows better than the 2jz head. the 2jz head has a "s" shape in the exaust ports bettwen cyls 4 and 5. the 1jz head does not have this.

1jz Cylinder bore was 86 mm (3.39 in) and stroke was 71.5 mm (2.81 in)
2jz Cylinder bore was 86 mm (3.39 in) and stroke was 86 mm (3.39 in)

ths shorter stoke is what lets rev so high.
__________________
87 silver turbo targa, bone ass stock (for now)
bioskyline is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT. The time now is 01:00 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86