1J And 2J Engine Flaws

[blk94r33]

i work in a holden dealership (don't give me shit it's a good place to work and learn) but i've been having some trouble with a guy that's giving me constant shit about rb's and their oil pumps. and i mean constant. multiple times a day. he has a hsv clubsport (vx) so another guy that works there gives him shit about the gen 3 engine using engine oil. he has a track car that he drifts at mallala which is a soarer with a 1J in it and i need some thing to give him shit about specific to 1j and 2j engines. i know they are a great engine but i prefer RB's. any help? anyone?

You work in a Holden dealership, go after his VX!!

-Your cars nearly 10 years older than his daily, and still going. How many oil problems did Holden have in the late 80's early 90's?

-Regardless of if it is or not, ask with a concerned look why his fuel pump is whining.

-Run your hands over the rear tyres and ask when was the last time he had a camber kit put in it.

-Tell him sway-bar link kits and front lower ball joints are on special at Repco

-Tell him he should move house, exactly 400m from work, on a straight road, so his car can get him there on time.

[R32Abuser]

1. Turbos and brake/clutch master cylinders over the same side of the engine for the RHD edition - results in boiled fluid if the car is pushed for a decent length of time

Irrelevant of whether this occurs to owner xxx, it is a poor design for the RHD market.

2. Intercooler heat soak

Edited March 9, 2011 by R32Abuser

[Nee-san]

^^^Love the sig, so valid for this thread hahaha

Why is the 26 head inferior to the 2J head? The numbers a stock 2J head will do is nothing short of crazy.

Here's a fair fight, 1995, skip to the end thats what matters;

There's even another BMI vid there with a 32 vs Supra, same track and while the 32 comes second last and the Supra is last (the turbo AWD's were in that race), the 32 did a 1.08.75 but the Supra did a 1.08.00

Good point on the 1J heads on 2J bottoms, id love to know why they do that other than money. The people ive spoken to that are in that community have mainly all said its due to the 1J's being quite old now, and 2J bottom ends being so reliable and cheap its a simple and cheap fix plus they get a bit more capacity at the same time, so in that respect its sort of like a skyline owner and an rb30

I used to think those best motoring comparisons were the shit steveo !

But then I found out that some of the cars are modified different tyres etc etc etc.

As for the head I am fairly sure the port sizes on the J engines are smaller then that of the RB 25/26.

Further, ask anyone what you can make on a standard RB26 head (ALOT) and then remember that it is 400CC smaller then a 2J and then you start to realise how good a job Nissan did, not to take anything away from toyota Though.

If it was a issue of being old I dont see why people would use a 2J bottom end on their 1J engines. as anyone that is changing bottom end isnt going to use a standard part anyway

Plus it would be cheaper just to build a 2J rather then stuff around with the time and money building a hybrid, especially since you already have the three litres, unlike our sort of people here who start with the 2.5/2.6 L

I had it put to me that the 1J head rev's harder and has better geometry then the 2J hence, why the couple it with the increased displacement.

Not to take anything away from the 2J but I think alot of the hype about their indestructibility came from too many people jerking themselves off over HPI and ZOOM magazines articles particularly people who write them that seem to find a new flavour of the month and mercilessly hammer it in the magazine for some unknown reason.....,

You need to look at brand new engines and how they perform not dirty old slappers like alot of us have here.

For instance, I saw a 4g63 make 690 wheel horsepower the other day on a completely stock bottom end, only 2.0 Litres, must be the best engine of all time right ?

[FineLine]

I used to think those best motoring comparisons were the shit steveo !

But then I found out that some of the cars are modified different tyres etc etc etc.

As for the head I am fairly sure the port sizes on the J engines are smaller then that of the RB 25/26.

Further, ask anyone what you can make on a standard RB26 head (ALOT) and then remember that it is 400CC smaller then a 2J and then you start to realise how good a job Nissan did, not to take anything away from toyota Though.

If it was a issue of being old I dont see why people would use a 2J bottom end on their 1J engines. as anyone that is changing bottom end isnt going to use a standard part anyway

Plus it would be cheaper just to build a 2J rather then stuff around with the time and money building a hybrid, especially since you already have the three litres, unlike our sort of people here who start with the 2.5/2.6 L

I had it put to me that the 1J head rev's harder and has better geometry then the 2J hence, why the couple it with the increased displacement.

Not to take anything away from the 2J but I think alot of the hype about their indestructibility came from too many people jerking themselves off over HPI and ZOOM magazines articles particularly people who write them that seem to find a new flavour of the month and mercilessly hammer it in the magazine for some unknown reason.....,

You need to look at brand new engines and how they perform not dirty old slappers like alot of us have here.

For instance, I saw a 4g63 make 690 wheel horsepower the other day on a completely stock bottom end, only 2.0 Litres, must be the best engine of all time right ?

Lots of truth in this post. The ports are smaller on the j engines than the rb's.

Indestructable they are not.I've seen more than enough of them with "windows in the block to know they are no more reliable than a Rb when leaned on.

If there were any where near as many of them around as their are rb's you would hear at least as many horror storys if not more.

Their crank shaft according to the guy that does my engineering is a better design than the rb but thats about it as far as superiority goes.

[fatboy13]

After owning a 1J supra and spending alot of time on Toyota forums... the most common reason that people use 1J Heads on a 2J is because when a 1J does let go and its in the bottom end, its not a bad upgrade to get a 2J bottom end and bolt your 1j head and all bolt ons onto it... more torque and what not from a 3L compared to the 2.5 etc etc

the 1J and 2J head have difference exhaust and intake stud patters, as such if you have an awesome 1J mani/turbo combination etc it makes sense to keep it and use the 1J head rather than selling the mani and starting again... only change thing that needs to change is the headgasket needs to be modified as one of the water galleries doesnt line up...

the flow of the 2 heads is pretty similar and its one of those common internet stories that goes around that a 1J head flows better... somewhere on toymods there is a direct flow comparison of the 2 and in the end i think the 2J head flows slightly better but nothing major...

and as posted earlier... they are just motors... i blew a headgasket on mine

my 2c

[browneye91]

Is it true that their coilpacks run in groups of 3's mates aristo at work had one go and it killed the engine because it caused all three to stop

[fatboy13]

They batch fire im pretty sure, so in groups of 2... but if 1 goes its not going to kill the rest as only 1 stops firing...

I had a couple of coilpacks let go in my 1J as they get cracks through them and cause them to misfire etc, but only affects that single coil pack, not the one that fires with it....

Coil packs in 1Js are a problem as they are so old, no so bad on 2Js it seems

As said earlier, they are still just engines so ive heard of head gaskets and bottom end bearings just like you hear of in any other motor, but i guess you dont hear as much as compared to RBs there arent as many of them floating around...

[Mr Eps]

Just give him 10 kilos of shit for driving a Soarer??? Easy done.

[Tony de Wonderful]

Bad news! Mines never, ever done that. Its been nothing but perfect in almost 4 years whereas the GTR has not if you put them side by side.

Also they dont turn corners well? Yeah not the ones slammed on 20's (same goes for GTR's though) but there are Supras out there that would surprise a GTR owner at how well they go. On this forum i wouldnt expect people to understand. As an example i had mine out on the weekend through National Park (lots of corners) with an MX5 owner in the passenger seat who always uses grippy tyres etc whereas my Supra is on cheat shit. He was shocked at how well it went. Also there's 2 other regulars on here (one 400kw GTR owner, one ex GTR owner) and both say the same about Supras now after being in a good one.

Sorry but ive owned both now for quite a while and the Supra has been flawless.

Sucks to hear that on a skyline site I know

The Supra was always mid pack in its race heyday so that proves it's an inferior platform.

[N1GTR]

The Supra was always mid pack in its race heyday so that proves it's an inferior platform.

Aaand that post proves your ignorance on the subject

[zebra]

Aaand that post proves your ignorance on the subject

+1

standard a supra/soarer/Aristo arent the best handling things (they all run the same suspension btw)

But thet is due to Toyotas mega over engineering...just have a look at how solid the front suspension arms are on them compared to Nissans pressed tin POS.

this all adds weight, given the budget for good light suspension components I would take the supra/Soarer over a Skyline anyday.

My only gripe with my 1jz is the lack of go under 3000revs, but that can be fixed with a midsize single turbo.

As for not easy to work on.....I would rather work on JZs over RBs anyday of the week, Toyota laid out every thing so much neater than Nissan...the Nissan Wiring looks like it was done by a 5 year old compared to my Soarer...and hell even my 7m powered Cressida, which is a child of the 80's.

As for the coil pack thingo someone said before...they are Batch injection not ignition and JZ have far fewer coil pack failures than RB's

Also the fact that my unopened 1jz has 217,000ks and im still quite happy to turn it to 7200rpm and not worry about spinning a bearing and breaking a ring land or emptying the sump into a catch can. Even when mega heat soaked after sitting in traffic for an hour it doesnt knock or have a hissy fit and go into R&R.

So yeah the head ports are smaller on a JZ compared to an RB but who cares...just add another 2psi of boost and there you go.

So in short I love my Soarer/1jz....lol yeha I have a soarer....

Even if it doesnt sound like an RB.....infact i pesonally think they sound better at high rpm.

For those 1JZ non fans, go drive a VVti single turbo 1JZ soarer or chaser with a 5speed, having peak torque at 2200rpm is awesome!!!!....espesially compared to my non Vvti twin turbo one which doesnt peak until 4700rpm

Which is not so bad because they love to rev...just sucks my long geared 4 speed auto makes it hard to get it up in the revs at legal speeds.

And like Stevo my car has started 1st time everytime....unlike my Previous RB25

[Iron Chef]

For sound, 1J>RB every day of the week, sorry guys. My ideal combo for a relatively low-cost street car would be a 1J in an R34, great motor, great car.

[Nee-san]

Some people just can't be helped it seems, haha.

[Birds]

standard a supra/soarer/Aristo arent the best handling things (they all run the same suspension btw)

But thet is due to Toyotas mega over engineering...just have a look at how solid the front suspension arms are on them compared to Nissans pressed tin POS.

this all adds weight, given the budget for good light suspension components I would take the supra/Soarer over a Skyline anyday.

Craig Dean's Soarer is testament to this...even though money ultimately dictates how good a vehicle is...you don't come 2nd outright in a targa event by polishing a turd!

As for not easy to work on.....I would rather work on JZs over RBs anyday of the week, Toyota laid out every thing so much neater than Nissan...the Nissan Wiring looks like it was done by a 5 year old compared to my Soarer...and hell even my 7m powered Cressida, which is a child of the 80's.

Depends on the work IMO. Electricals and spark plugs / coil packs, I'll take the 1JZ over an RB...but not if it's related to the turbos or intake pipes!

Which is not so bad because they love to rev...just sucks my long geared 4 speed auto makes it hard to get it up in the revs at legal speeds.

Yer it is a tall one. Still, the best slushbox to engine match up of the 90's IMO...you're never without a power band and the engine just keeps pulling smoothly no matter what gear you're in. Very easy to speed in them - plenty of friends who have lost their licences trying to redline the 1JZ lol.

For sound, 1J>RB every day of the week, sorry guys. My ideal combo for a relatively low-cost street car would be a 1J in an R34, great motor, great car.

1JZ is a real screamer...I went to a dyno day with a stock Soarer and the engine note had everyone holding their ears, much more than the rest of the cars with aftermarket exhausts.

[zebra]

Depends on the work IMO. Electricals and spark plugs / coil packs, I'll take the 1JZ over an RB...but not if it's related to the turbos or intake pipes!

The intake pipes arent that bad, the turbos are a bastard to get to...but still better than an RB26 imo...let alone a 300zx lol

[fatboy13]

The front turbo is easy... the rear turbo is shite... lol

[Adelaideprosound]

IMHO

The one 1J/2J has an inherint problem with their starter relay. You wont find one that has not encounterd intermittent and then total failure. WONT START!

I laugh at the number of Supra folk that replace starter motors, fuel pumps, ignition, wiring, relays, and even disable/remove/replace their immobiliser and all manner of things. BUT there is a cheap $30 and complete fix !!!! that I wont elaborate on because I own an R32 GTR!!! ......

Now with a NITTO oil pump and full engine rebuild due to not knowing the achillies heal of my GTR at time of purchase.

Supra = straight line and cheaper to buy kw's. Add a few corners and the tide turns - Dramatically!

You sir are a total idiot. They turn and quite well too.

Here is mine, and i have never had a problem with one not starting so i think u need to really shut up.

[Adelaideprosound]

I used to think those best motoring comparisons were the shit steveo !

But then I found out that some of the cars are modified different tyres etc etc etc.

As for the head I am fairly sure the port sizes on the J engines are smaller then that of the RB 25/26.

Further, ask anyone what you can make on a standard RB26 head (ALOT) and then remember that it is 400CC smaller then a 2J and then you start to realise how good a job Nissan did, not to take anything away from toyota Though.

If it was a issue of being old I dont see why people would use a 2J bottom end on their 1J engines. as anyone that is changing bottom end isnt going to use a standard part anyway

Plus it would be cheaper just to build a 2J rather then stuff around with the time and money building a hybrid, especially since you already have the three litres, unlike our sort of people here who start with the 2.5/2.6 L

I had it put to me that the 1J head rev's harder and has better geometry then the 2J hence, why the couple it with the increased displacement.

Not to take anything away from the 2J but I think alot of the hype about their indestructibility came from too many people jerking themselves off over HPI and ZOOM magazines articles particularly people who write them that seem to find a new flavour of the month and mercilessly hammer it in the magazine for some unknown reason.....,

You need to look at brand new engines and how they perform not dirty old slappers like alot of us have here.

For instance, I saw a 4g63 make 690 wheel horsepower the other day on a completely stock bottom end, only 2.0 Litres, must be the best engine of all time right ?

You are talking shit and heresay about what you have heard, not what you have experienced. And a RB26 head being 400cc smaller? WHAT????? . Dude you will know the displacement of the engine has nothing to do with the head. Thats determined by the bore stroke ratio of the block.

Also a 2j is better than a 1j, i dont know why people put 1jheads on 2j bottom ends maybe same as why people would put and rb26 head on an rb30 bottom end.

I have no problems flowing over a 1000hp with the 2j head thats on my machine.

510kw on 22psi on the rear wheels all day every day through a sequential transmission going to manual end of the month, and still havent done a tune above 22psi but i dare say 650rwkw or above is not too far away.

[zebra]

You are talking shit and heresay about what you have heard, not what you have experienced. And a RB26 head being 400cc smaller? WHAT????? . Dude you will know the displacement of the engine has nothing to do with the head. Thats determined by the bore stroke ratio of the block.

Also a 2j is better than a 1j, i dont know why people put 1jheads on 2j bottom ends maybe same as why people would put and rb26 head on an rb30 bottom end.

I have no problems flowing over a 1000hp with the 2j head thats on my machine.

510kw on 22psi on the rear wheels all day every day through a sequential transmission going to manual end of the month, and still havent done a tune above 22psi but i dare say 650rwkw or above is not too far away.

WTF calm down!

He said that an RB26 is 400cc smaller than a 2J

Also fow do you have no problems flowing over 1000hp when you havent made 1000hp yet?

[Tony de Wonderful]

Aaand that post proves your ignorance on the subject

That just proves you don't have an argument.