RB25 VS 1JZ and 2JZ

[the a3k]

i was originally gonna go with a blacktop sr in my s13 but i decided to go above that. I was thinking the rb25 but then i read about the 1jz and 2jz. would the toyota motors be worth the hassle? 6 speeds are expensive as hell, hard to find a 5 speed, and automatic... yea right.

[Coolwhip]

i looks as if you began your research on these swap... continue to do so and make it easy on yourself and just do a cost/benifit analysis or similar.

Plus forums tend to be bias.

/thread

[krayton]

yeah, its gonna be really bias in a rb forum.

....so....dare i say.....1j

ive seen 1jz as low as 900 bucks all day. get whatever cheapo 5speed transmission it is and mounts. those Fing engines can make like 300+ out the box like no ones business.

ebay manifold, used 550 injectors, safc, cheapo turbo and your looking at 400+

mmhhmmmmm

[styc]

what wrong with a auto jz? not hating just asking.

[meet07]

i would take the 1j or 2j over the 25. i feel the 25 has more info. i found a motor for about 600 bucks around the same time i bought my 25

[the a3k]

yea I'm slowly getting all the info and whatever on the JZ engines. i saw there's a DVD for both the rb25 and 2jz swaps but not for the 1jz. we'll see what happens. i might just end up getting the rb25 cause it seems easier to put in but IDK yet

and automatic is borrrrrringgggggggg

[l0nestar]

My 2J works just fine for me.. and it's an auto. Nice having TCS for various environments. and the Helical LSD helps too.

[l0nestar]

Also, you know everything is going to be biased here..

go KA-T! or LS7. Done!

[DRIFTING.com]

i was originally gonna go with a blacktop sr in my s13 but i decided to go above that. I was thinking the rb25 but then i read about the 1jz and 2jz. would the toyota motors be worth the hassle? 6 speeds are expensive as hell, hard to find a 5 speed, and automatic... yea right.

the 2JZ requires more work (relocating the fuel lines) plus you need more custom parts (Ex. shifter extension + modified radiator) but you can't compare it to an RB25 swap, more like an RB26 swap

the RB25 was not a hassle to install (Except for the rad. fans) but it was a hassle building up the motor for the owners overall HP goal.

the RB25DET and 2JZ Swap DVD's are herehttp://store.driftingshop.com/new1.html

[the a3k]

yea im probably gonna end up doing the rb25 swap.

[RBFAN]

My buddy has a 87 supra with a 1jz swap and man is that thing a rocket. The motor is 100% stock and it spins the tire through 1,2, and sometime 3rd. The car is gutted and weighs nothing, I still like the rb motors more.

[Coolwhip]

perhaps he needs tires...lol, jp :P

[l0nestar]

My buddy has a 87 supra with a 1jz swap and man is that thing a rocket. The motor is 100% stock and it spins the tire through 1,2, and sometime 3rd. The car is gutted and weighs nothing, I still like the rb motors more.

My stock* 25 can spin in 2nd and sometimes 3rd, depending on when the Ecsta 225's hook. But I have a full interior.. Just at 3000lbs with me and a full tank.

(well, it's not 100% stock - cone filter, FMIC, exhaust, RB20 WGA)

[l0nestar]

perhaps he needs tires...lol, jp :P

QFT!

[WhatsADSM]

perhaps he needs tires...lol, jp :P

[neonbomb]

My buddy has a 87 supra with a 1jz swap

So the orig 1j was bad? lol

[WhatsADSM]

So the orig 1j was bad? lol

Pretty sure they are all 7Ms in this country, hence the "1j swap"

[Kalypso]

the 2j is fire

[SullivanRacing06]

the 2j is fire

fira fira, but please compare the 2jz to the 26 not a 25

[S14eva1]

^^^^^ no,no,....and no

If you want to compare an RB to a 2jz.....the only one that comes close is an rb30.And from what it looks like it will cost an arm -n- leg to get an rb30 to run as reliable as a stock 2jz.

rb26 is much more similar to a 1jz besides the very small displacement difference, both rev high and can handle 600-700hp in stock trim when tune properly.They can make good hp # but both make small torque #'s compared to the 3.0 engines....and there is no need to buy a $1k oil pump for a 1jz at those power levels.

btw:I've been on both Toyota and Nissan forums for a long time...and from my experience the toyota JZ engines are built much more stout from the factory then the rb's.From my observation....on the average there more folks breaking parts on rb's than jz engines...just look around

For example...issues like weak oil pumps,water pumps,oil starvation to the head,blowin piston at 500hp's etc....are not common in the JZ community,there are even a high number of guys making well over 500 whp on stock N/A 2j's(fyi:dont come with oil squiters)...only engine mod they have are thicker HG's....but no other issues what so ever

I'm a hardcore nissan guy....but you got to give Toyota their props,they know there **** when comes to building reliable engines.And to no surprise they are currently the world leader in car sells.


Modified by S14eva1 at 8:57 AM 11/29/2008

[2j'd]

[QUOTE=S14eva1]^^^^^ no,no,....and no

If you want to compare an RB to a 2jz.....the only one that comes close is an rb30.And from what it looks like it will cost an arm -n- leg to get an rb30 to run as reliable as a stock 2jz.

rb26 is much more similar to a 1jz besides the very small displacement difference, both rev high and can handle 600-700hp in stock trim when tune properly.They can make good hp # but both make small torque #'s compared to the 3.0 engines....and there is no need to buy a $1k oil pump for a 1jz at those power levels.

btw:I've been on both Toyota and Nissan forums for a long time...and from my experience the toyota JZ engines are built much more stout from the factory then the rb's.From my observation....on the average there more folks breaking parts on rb's than jz engines...just look around

For example...issues like weak oil pumps,water pumps,oil starvation to the head,blowin piston at 500hp's etc....are not common in the JZ community,there are even a high number of guys making well over 500 whp on stock N/A 2j's(fyi:dont come with oil squiters)...only engine mod they have are thicker HG's....but no other issues what so ever

I'm a hardcore nissan guy....but you got to give Toyota their props,they know there **** when comes to building reliable engines.And to no surprise they are currently the world leader in car sells.

Modified by S14eva1 at 8:57 AM 11/29/2008[/QUOTEwell put

[Kalypso]

An r33 owner here in queens, is putting an ls1 into his skyline.

he says that as a hardcore nissan enthusiast he doesnt trust the RB motors, cylinder 4 in multiple RB's his tuned, always blows a rod out the side when he goes above 500hp.

unfortunate, but true. Their reliability is questionable.

I hope the manjor manufacturers conitnue building more inline engines.I think that in total cost, the LS1 might be the most cost effective approach for getting 500hp to road.

[S14eva1]

sounds like your friend was having knock issues....

what system did he use.....what standalone?

But yeah it kinda sucks you have to make these engine reliable on your own(oiling mods,water pumps,oil pumps,etc) in order to get some decent power....

[WhatsADSM]

An r33 owner here in queens, is putting an ls1 into his skyline.

he says that as a hardcore nissan enthusiast he doesnt trust the RB motors, cylinder 4 in multiple RB's his tuned, always blows a rod out the side when he goes above 500hp.

unfortunate, but true. Their reliability is questionable.

I hope the manjor manufacturers conitnue building more inline engines.I think that in total cost, the LS1 might be the most cost effective approach for getting 500hp to road.

Get a new tuner.

If you are blowing rods in a rb26 at 500whp you need a new tuner. They are proven to be very very reliable at that power level. Honestly the stock cast pistons will give out before the rods and even so it's well above the 500whp level.

IMO RB25<1JZ<RB26<2JZ

[Kalypso]

- I dont know him personally and i cant say for sure, whether it was a 25 or a 26 but like you said, it could have been his tuner/engine builder repeating the same mistakes.

- I dont about the standalone,or if he was using a stock bottom or not.

I have loved the RB motors for the longest time, and held them in the highest regard, but as of today, If I drop a 6 cylinder into my s13... it would be a 2jz.

IMO RB25<1JZ<RB26<2JZ

agreed

[eh?]

An r33 owner here in queens, is putting an ls1 into his skyline.

he says that as a hardcore nissan enthusiast he doesnt trust the RB motors, cylinder 4 in multiple RB's his tuned, always blows a rod out the side when he goes above 500hp.

unfortunate, but true. Their reliability is questionable.

I hope the manjor manufacturers conitnue building more inline engines.I think that in total cost, the LS1 might be the most cost effective approach for getting 500hp to road.

What's this guys name? I never heard of an RB25 throwing a rod ever. The RB26's I've heard of threw rods on the race track. I've never heard of anyone in Queens making any power in an RB.

[Kalypso]

What's this guys name?

Soupy in queens, also I just learned he can import skylines

[eh?]

Soupy in queens, also I just learned he can import skylines

Does he have a shop or work for shop? Never heard of this guy. Sounds like he read the scc issue where the skyline put a hole in the block during uscc.

[BoostFab]

Soupy in queens, also I just learned he can import skylines

not legally for street driven.

[Kalypso]

"eh?"

are you from Queens? queens borough new york city?

we'd love to see that kouki in person... if so we should all meet up and kick it.

I dont know Soupy personally, but Soupy is a rich guys with about 7 cars... three of my friends... Supra, Sc300, and Prelude. Edo, Jay, and chanan

all see him regularly, he doesnt own a shop he's just rich, and relatively friendly from what I hear. (and it might not be soupy, it could be soupi? or supee?...)

not legally for street driven.

any car can be driven legally on the street if its registered in the right state and county...

like savannah georgia...