Wednesday, October 24, 2007 - 08:10 pm, by: Vinh Bui(Hyudsjk)
Jeff Smith can give you an unbiased opinion, as from what I know his brother owns a heavily modified RB25 Skyline and he owns a 1JZ Soarer which is in the process of getting a big single GT3037R installed.
Wednesday, October 24, 2007 - 08:55 pm, by: Maurice Diggler(Mau_rice)
Without sounding like a biased fanboy here, I have a few friends with RB25 powered R32,33 34's and they generally say they dont want to run more than 13-14psi on stock unopened engines and don't want to run more than 240-250rwkw, as far as I understand it is believed they become unreliable / a ticking time bomb in terms of reliability where as people with 1/2JZ don't start to worry until 350-400rwkw. Obviously the risk of any engine letting go is a reality however it appears the Nissans do that first.
Wednesday, October 24, 2007 - 11:23 pm, by: Joshua Rao(Soaren1)
In a Hpi magazine, cant remember the issue but Ben Ellis in his editorial column goes on about how the 1JZ can be far better than the rb26. Can anyone remember the issue?
Tom Kneebone TryHard WA 93 factory 5 spd TT : 91 Auto TT
Thursday, October 25, 2007 - 01:44 am, by: Tom Kneebone(Tomk)
My son has an R31 with a N/A RB25 and he has disrespected this engine like you wouldn't believe. It still starts first time and runs smoothly. It has outlasted the diff and gearbox both of which have been replaced. I have also read somewhere that the only thing an RB26 has over a 1J is the forged pistons. The 1J internals are supposed to be beefier. May have been HPI where I read it.
Thursday, October 25, 2007 - 05:37 am, by: Matthew Sharpe(Madmatt)
I've seen quite a few Skylines with 1JZ's and 2JZ conversions, but I've only ever seen 1 Soarer with a RB25, and never seen a Supra, Aristo, Chaser etc - but then again there are loads more Skylines out there than Supras & Soarers etc combined, so maybe its just a numbers thing.
Thursday, October 25, 2007 - 05:55 am, by: Blake Gloyn(Blakenz)
these 2 motors were made with the exact same design brief. fuel consumption and power with identical turbos and appropriate tuning will be similar. But it has been proven time and again, dont chase over 300 rwkw on stock internals on an RB25,it will stick a rod through the side of the block. the 1jz can handle 350- 400rwkw. totally unbiased- i did plenty of research before i bought my 1jz,and i was a nissan fan before i realised how good the 1jz motors were.
Thursday, October 25, 2007 - 08:28 am, by: Ross Pesina(Ross79)
Post this same question on a skyline forum. When shopping for a car performance and reliability were my main deciding factors. My options were either a skyline or soarer. After a lot of research I couldn't go past the Soarer. They're so much stronger and I'm on my second one now and a Supra to complete the collection
Thursday, October 25, 2007 - 08:40 pm, by: Brian Timms(Turbo_brian)
1JZ stock is stronger than any RB engine stock.
Stock for stock, power is similar, econemy seems to be similar (both very efficient engines when driven respectably, both can be harsh on the wallet if thrashed.
Both engines enjoy a little extra boost, and a with minimal modifications, both can achieve damn good results.
I am a skyline fan, my ultimate car would be an R32 GTR (the 2.6 litre engine), painted in maroon and with the Windfeild racing colours and stickering.
Non-engine based, the Soarer looses out dramatically when you combine the body of the car, with the Slyline weighin in at close to 1360kg, and the Soarer in basic form being around 1600+ Kgs, there is a massive difference. Considering the power is close to the same, this means power to weight suffers.
Also looking at the entire package, a Skyline GTS-t is made for a 'sports sedan', while the Soarer is designed as a 'luxury car', therefore they are technically in completely different classes of vehicle, but yet still perform well together.
I still want my R32 GTR skyline, but I do have to admit, I came from a Nissan, and I have been VERY impressed with this package from Toyota, and nothing I have driven remotely compares to the package I currently have.
If I had to replace my currently only car again, I would definately re-invest in a Soarer, the engine has been bullet proof, and the entire car has been a dream on wheels.
Friday, October 26, 2007 - 09:38 am, by: Gwilym Roberts(Gwilmarlio)
ok I know I dont have a sorar but its stil a 1J (JZA70 R) anyway I have a mate with a 33GTST RB25 33 had sone 3" all the way with dunp SAFC tuned intercooler POD filter my car 3" all the way with stock dump Y pipe Pod filter now by dyno sheet we where makeing the same power 267hp give or take a hp and 1/4 time slips he had run alot more than me and his best was 13.78 I ran total of 5 runs in 1 night and pulled 13.82 so I would say the 1J makes the same power than the RB25 with less mods (intercooler SAFC tuned and dump pipe)
Sunday, October 28, 2007 - 07:06 am, by: Blake Gloyn(Blakenz)
No callum,you must be joking right? just in case you aren't,the RB26 is a 2.6 litre(hence the name RB26!) and the 2jz is 3litre. David, the exhaust valves aren't that small on a 1jz.they are bigger than the 2jz, and( i think) the same size as the rb26. I think the most interesting point( if you can look beyond the 18kW 1jzgte power advantage in standard form) is the torque figures. RB 25DET.. 295 NM, R32 RB26 has 360 NM, 1jzgte has 363 NM torque. 23% more torque than the RB25. that is huge! considering the 2jz uses 20% more displacement for an 18% increase in torque over the 1jz.
Friday, November 09, 2007 - 12:49 am, by: Cihan Aday(Cihan)
Its the early 26's that have that problem, they need restrictors if the oil pump is swapped over or the oil availability/pressure bias shifts towards the head and ruins the bottom end rather quickly. Especially true if you take it into the red on a consistent basis without the right precautions.
A little something i noticed - a "hardcore" aftermarket JUN oil pump for an RB26 is still smaller than the standard 2JZ oil pump hehe
On that note, i've got a JUN rb26 oil pump for sale, no scuffing, perfect clearances, $1300 delivered.
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