Anyone Running A 1jz Swap?

[Travis Bickle]

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?

[Kranker]

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

[VB-]

C&Y motorsports? are you in japan?

[limpus]

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

[Lithium]

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

[unique1]

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 October 18, 2008 by unique1

[joeyjoejoejuniorshabadoo]

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...

[BAMR33]

yeah 1j's are good for LHD cars. Not sure why'd you want to put one in any skyline as both motors are a straight 6, turbo, dohc, built fairly strong from factory. Seems like your taking the piss.

Edited October 19, 2008 by BAMR33

[VB-]

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

[RBwhatever]

Yeah I think I'd prefer a 1J over a rb25. I'd like to own a JZX100, the only thing that puts me off them is their ugly as sin interior. But there's nothing wrong with the RB25's, I'm more than happy with mine

[joeyjoejoejuniorshabadoo]

Thats right, i remember now it was in an old skyline vs supra thread... It was in a supra...

[Travis Bickle]

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 October 19, 2008 by Travis Bickle

[joeyjoejoejuniorshabadoo]

2jz? Rb26? Vq35dett? Vq45de? Vq45dett?

[Travis Bickle]

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]

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

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]

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]

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.

[robots]

How the hell can it weight less than rb20 ?

[joeyjoejoejuniorshabadoo]

not being smart at all... just you were saying you want 400+hp and are thinking of a swap... i know i'd be looking at a 26

[nerm]

How the hell can it weight less than rb20 ?

isnt the rb20 the heaviest motor in the rb series? just the motor by itself