can someone tell me the difference between a 1jz and a 2jz

t12tninja · 10-11-2010, 04:33 PM

it would help if you include states of boost and hp. im thinking about swaping but dont know the diffrence

Sonyps307 · 10-11-2010, 07:30 PM

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

kamikazemkiii · 10-12-2010, 07:00 PM

1jz 2.5L
2jz 3.0L

87TT · 10-12-2010, 07:45 PM

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

907mge · 10-12-2010, 11:55 PM

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.

suicidal · 10-13-2010, 02:03 AM

what is the redline for the 1j?

907mge · 10-13-2010, 02:34 AM

I found this

http://www.240sxforums.com/forums/hy...rodject-3.html

btwilson86 · 10-13-2010, 02:40 AM

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".

t12tninja · 10-14-2010, 04:20 PM

thanks for all the help guys

bioskyline · 10-25-2010, 08:10 AM

Quote:

Originally Posted by 907mge

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.

10-11-2010, 04:33 PM	#1
t12tninja Intake Join Date: Jul 2010 Location: texas Posts: 40	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

10-12-2010, 07:45 PM	#4
87TT Intake Join Date: Sep 2009 Location: Winnipeg MB Posts: 45	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.

10-13-2010, 02:03 AM	#6
suicidal Stock Join Date: Dec 2009 Location: goldsboro nc Posts: 20	what is the redline for the 1j? __________________ tokico shocks, drilled rotors, race pads, stage 2 clutch, full exhaust, custom intake (filter and pipe)

10-13-2010, 02:40 AM	#8
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	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

10-11-2010, 07:30 PM	#2
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	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

10-12-2010, 07:00 PM	#3
kamikazemkiii 3" Exhaust Join Date: Mar 2009 Location: raleigh Posts: 138	1jz 2.5L 2jz 3.0L

10-12-2010, 11:55 PM	#5
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	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.

10-13-2010, 02:34 AM	#7
907mge 20psi boost Join Date: Dec 2009 Location: Harrisburg Posts: 759	I found this http://www.240sxforums.com/forums/hy...rodject-3.html

10-14-2010, 04:20 PM	#9
t12tninja Intake Join Date: Jul 2010 Location: texas Posts: 40	thanks for all the help guys