Jump to content
SAU Community

Anyone Running A 1jz Swap?

Travis Bickle

By Travis Bickle,
in Engines & Forced Induction

 Share

Recommended Posts

Travis Bickle Collaborator

Travis Bickle

Posted
Posted

C&Y motorsports (theyre in this months option2) is right down the road from me and they have a 1J sitting there with a manual tranny.

i have always loved how ripe these things sound (like an old boosted F1 motor) in comparison to the RB25 (like a tractor on steroids) and looking at some of the 1J dyno results on the yota forums and in the option mags, it would SEEM like its a tad bit more potent that the RB25, at least.

with that being said, the "team toyo" drift car, not kawabatas, but kuroi's, is running a 1J that he pulled a RB25 out to put in.

anyone running one in an R chassis car?

Link to comment
https://www.sau.com.au/forums/topic/240668-anyone-running-a-1jz-swap/
Share on other sites
Kranker Collaborator

Kranker

Posted
Posted

They sound pretty similar dude....both straight 6's with similar dimensions...the only diffences you would hear would be caused by exhaust design, not by the engines themselves

They are a sturdier than an RB25, but in my opinion the difference isnt big enough to warrant a swap. For the cost of the engine swap and the engine you could build a forged rb25 that will punch just as hard if not harder than a factory 1J. Saying that 1J's do have a nice head, think yamaha designed if i remember correctly. Ive heard of people strapping singles to these things and with appropriate support mods running 4-500hp...but look in the dyno thread, a built RB25 can also make similar power.

Only real reason I can see for swapping your RB25 for a 1J would be if you destroyed ur current engine and had a cheap 1J available

Lithium Grand Master

Lithium

Posted
Posted
Stock for stock they are a superior engine in every way but probably not a cost effective swap...

Not agreed, in my experience the RB25s seem to flow a bit better - ie more power on less boost. But yeah, the 1JZ is a stronger unit.

The exhaust note is because of the exhaust design, get a tubular exhaust manifold on both and you'll find the engines are very very similar sounding... 6boost manifolds make RB25s sound pretty wicked :rofl:

unique1 Mentor

unique1

Posted
Posted (edited)

from the 1j's ive seen they make upto 400-420hp with ease but then hit a brick wall, they need a hell of alot of boost to make 500hp with a big turbo. Ones i know of run 24psi on a t78-33d making only 410hp and another one with cams and gtk650 making 480hp on around 24-25psi. Though i must say they are both stock internals and lasting with that sort of power and boost. Plus they are cheap motors to buy compared to 25's.

Edited by unique1
joeyjoejoejuniorshabadoo Grand Master

joeyjoejoejuniorshabadoo

Posted
Posted

You're gonna have clearance issues with brakeing consonants and such with their crazy wrong side turbo setup... Might take a fair bit of modding to fit it in...

pretty sure sydney kid had a 2j powered skyline many years ago and had mega troubles with the turbo's heating the breaks to the point that they wouldn't work after 5 laps...

VB- Veteran

VB-

Posted
Posted

i think maybe with the class sydney kid had to run in he had to use stock turbos (i think it was a supra, not a 2J skylines also) and that could have had issues with the brakes, but most people go medium/big single and then it should be easy enough to stop heating the master cylender

1JZ>RB25 imo

Travis Bickle Collaborator

Travis Bickle

Posted
  • Author
Posted (edited)

to the guy who asked if i am in japan the answer is yes, i live here. (japan)

i looked into a few things, and when i said 1J i meant the jzx100 model, which is the single turbo with VVT-i, which would alleviate most of the brake booster. like i said, the toyo guys are running this in an RPS chassis so...

as far as the markII and its variants, they are dog shit cars. the japanese kids cant give them away here, they all drive 180s or older model laurels with SR swaps. thats around my area at least.

im thinking with a custom turbo mani to place it a little closer to the front of the engine, youd be fine. Manabu Arikaki, who just retired from Top Secret as one of their fab men, lives down the road from me and still does fab work on the side. making the intake and exhaust manifolds would be pretty easy for him, judging by the supra he has LOL.

this, in my mind, was strictly a "if my RB has a hole in the side of the block" scenario.

im thinking the sound is due to the short stroke as well. im not after the sound though, im after a better flowing head, but if you guys are saying the RB is a little better above 400...

Edited by Travis Bickle
Travis Bickle Collaborator

Travis Bickle

Posted
  • Author
Posted
2jz? Rb26? Vq35dett? Vq45de? Vq45dett?

I dunno if youre trying to be a smart ass or not, but the other point of a 1J is they are laying around here for 800 bucks.

RB26s......arent. these things have a cult following here and you have to pry cold dead fingers off them.

Lithium Grand Master

Lithium

Posted
Posted
im thinking the sound is due to the short stroke as well. im not after the sound though, im after a better flowing head, but if you guys are saying the RB is a little better above 400...

The 1JZGTE has .2mm shorter stroke, or 71.5mm vs 71.7mm for the RB25DET and they both have 86mm bore... RB25DET > 1JZGTE :D

In the cases I have seen so far RB25DETs keep making more power with untouched (ie cams/porting etc) heads than the 1JZGTEs. On stock turbos the 1JZGTEs do better however, but thats because the 1JZGTEs come with better turbos. There is no questioning the 1JZGTE is stronger, though having said that I have been running mid/high 200rwkw for a couple of years ago in my daily driven R33 with no issues whatsoever from the engine and I don't expect it will start so I guess it depends on what you are looking for.

HYBRID VL Community Regular

HYBRID VL

Posted
Posted

i have heard nothing but good things about the 1JZGTE engine makes same amount of KW at the engine as a RB25 206kw if i am correct or 208kw.

A remember Rigoli had an R32 running a 7MGTE 6cylinder turbo and i think it was doing 9's reason they put it in was the engine was laying around and the R32 didnt have an engine in it.

I have also seen a 1JZ in a S13 Silvia and for same price of a 1JZ u can only buy a Rb20 thats on price comparisson i also have been told that a 1JZ head out flows a RB25 head also been told a 2JZ head will fit with AM pistons.

mate if you have the funds go for it check out how weights of the 1JZ engine compared to the RB25 aswell id like to know what differences there is im guessing you would run an R154 5speed box as i think a getrag would be a fair bit of moding to fit.

old mate Collaborator

old mate

Posted
Posted

a 1j weighs less than an rb20 im pretty sure. 1j's are super tough motors but i guess naything is when its done right. maybe ask the workshop how much it would cost to do the swap regardless of how much you can pick the block up for.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • TurboTapin
      boost source Size Garrett gt28 gen2

      By TurboTapin · Posted

      You just need to remove the compressor housing, not the entire turbo. I would not be drilling and tapping anything with the housing still on anyways. 
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      So, I put my boat on a boat. First of all, I'm going to come out and say it. Why is Tasmania not considered a holy goal, an apex that all road-legal modified cars go to, to experience? This place is an absolute wonderland of titanic proportions. If people are already getting club runs for once in a lifetime 30 person cruises to Tassy then I've never seemed to see it. It is like someone replaced the entire place with an idyllic wonderland for cars, and all of the people living there with paid actors who are kind, humble, and friendly. Dear god. After doing a lap of almost all of the place I've found that it's a great way to find out all of the little things that the car isn't doing quite right and a great way to figure it all out. All in all, I drove for 4 hours a day for a week and nothing broke. I didn't even need to open the engine bay. This is by all means a great success, but it has left me with a list of things to potentially address. I also now have a 3D printed wheel fitment tool which annoyingly hasn't got any threads in it to actually assemble it. I might be able to tape it together to check the sizing I actually want to use, but it'll likely involving pulling the shocks out to properly measure travel at least at the front, and probably raise the car while I'm at it, at least in the rear. I scraped on quite a few things and I'm not sure how else to go about it. I was taking anything with a bump at what felt like 89 degree angles. And address those 10 other tasks. And wash the car. God damn it is dirty. And somehow, the weather was perfect the entire time - And because I was on the top of Mt Wellington it turns out it was very much about to freeze up there. I did something I typically never do and took some photos up there in what must have been -10 and the foggy felt like suspended ice, rather than mere fog. If you own a car in Australia, you owe it to yourself to do it.
    • QB6SAGR
      Battle of the broken skylines

      By QB6SAGR · Posted

      Damn that was hilarious, and a bit embarrassing for skylines in general 😂 vintage car life ey. That R33 really stomped. Pretty entertaining stuff
    • cosline
      R32 gtr transmission strength, billet plate

      By cosline · Posted

      Hi, I have a r32 gtr transmission. Does any of you guys have an idea how much power it will hold with the billet center plate and stock gearset? At what power level and use did yours brake with or without billet plate? Thanks, Oystein Lovik
    • Rezz
      Spotted on the street....

      By Rezz · Posted

      Saw this replica police car based on a Mitsubishi Starion XX parked next to a 'police box' (it's literally a box) in Hirohata, Himeji City in Hyogo prefecture the other day. It's owned by Morii-san who is a local Mitsubishi Starion enthusiast. According to a local radio station blog post, he always wanted to make a police car himself based on ones he saw in his favourite Manga comics.  As it's illegal to modify a car to look like a police car and drive on the road, Morii-san tried many times to get permission from Aboshi police station headquarters nearby. They refused initially by after they got tired of that they granted him permission. However, the car can only be displayed on private property and obviously can't be registered as long as the police livery is present. The car was completed at a cost of 1.5 million yen (US$ 10,000) in addition to the car cost. A location was chosen outside Hirohata Police box where the car can easily been seen from the street. Morii-san has two other Starion road cars, both widebody GSR-VRs.
×
×
  • Create New...