whats better a rb25det or a 1jz?

[arsin21]

I want to know if a rb25det would be better that an toyota 1jz-gett what would be a better swap for my 1995 240sx ?

[nissan240sxdude]

Well here are specs on both the RB25DE-T and the 2JZ-GTE. Unless you want throw away all your cash go with the RB25DE-T because the 2JZ-GTE costs $11,000 for installation because you need new engine mounts, custom fabrication, and it is not a Nissan engine.


RB25DE-T

Engine Cost: $5,000-6,500
Install Cost:$2,500-3,000
Stock Horse power: 247 @ 6000 rpm
Stock Torque: 217lb/ft @ 4800 rpm
Redline: 8,000 rpm
Turbo: N/A
Stock Boost: N/A
0-60 mph: N/A
1/4 mile: N/A
Modified Horsepower: 400-450hp

2JZ-GTE

Engine Cost: $2,000
Install Cost:$11,000
Stock Horse power: 320 @ 5800 rpm
Stock Torque: 315lb/ft @ 4000 rpm
Redline: 6,800 rpm
Turbo: Steel CT12B
Stock Boost: N/A
0-60 mph: N/A
1/4 mile: N/A
Modified Horsepower: 550-650hp

Well good luck with your 240sx.

-nissan240sxdude

[Dorikin]

1JZ will destroy the RB25.

Forget what you think about Nissan loyalty. If its good enough for Dart Izumi, its good enough for an American rich0kid punk like you

[nissan240sxdude]

Um, you realize that the JZ costs $11,000 to install. Also I said the reasons why it costs so much is different engine mounts, custom fabrication, and because it is not an Nissan engine and you are putting it in a Nissan car it has a completely different set up.

But if you want to shell out $11,000 for installation you just go right ahead.

[stealthj]

u got that from kholiqs website??

i dont think the price is right

"UM, you realize.....also i said.....you just go right ahead..."-----PLEASE DONT START....JUST DONT

rb25's for 5-6k???? HE DIDINT SAY rb26DETT

MORE lIKE 3-4k


AND I DONT THINK THE LOCAL SHOP WILL SAY 11 GRAND FOR IT

more like 5

as for whats better??

THE HELL KINNA QUES.....

id say rb25det

[Soyo]

well the total price is only like 2k different but I agree your prices are a bit(or alot) off, both are mad expensive, but if you got the money I'd say your in good shape with 1jz... or you could drop in a 20b and call it good

20B - Racing engine

Mazdaspeed 20B
(640x480)


(Picture from 1996/1997 Mazdaspeed catalog Page 104)

This engine is currently (1997) sold by both Mazdaspeed in Japan and Mazda Motorsports in the USA, both of which are officially part of Mazda. At first I presumed this was a racing engine based on the production 20B. However on comparing the photos of the race 20B and the race 13G, plus the Mazda catalogs list this engine as using rotor housings with grooves for the water seals, I think it is still a 13G they are selling.
Also the power output and torque figures are identical (same RPM), and the weight/dimensions are almost the same.
(The grooves for the water seals were moved from the rotor housings to the side housings when the "2nd generation" RX7 (FC3S) was released in 1986)

20B Racing Engine specifications Origin Possibly same as 13G race engine, but not certain.
Capacity 654cc x 3 rotors = 1962cc
Compression ratio Unknown (But 13G is 9.4:1)
Induction Naturally aspirated peripheral port, electronic fuel injection (2 injectors per rotor)
Exhaust Peripheral Exhaust Port
Ignition Distributorless CDI ignition (2 plugs/rotor)
Power/RPM 450ps@8500rpm
Torque/RPM 40kgm@8000rpm
Max RPM Unknown (But 13G is 9500 RPM)
Dimensions Length 675mm Width 549mm Height 520mm
Weight 143kg

[turbo2nr]

some specs on the 1jz motor i know the 2jz is form the supra but the 1jz im not sure? what car is it from ? stock hp? ect..
thanks
1

[stealthj]

id have rb26dett.....

OOOH I LIKE THAT 20B...!

[Dorikin]

Originally Posted by stealthj

u got that from kholiqs website??

i dont think the price is right

"UM, you realize.....also i said.....you just go right ahead..."-----PLEASE DONT START....JUST DONT

rb25's for 5-6k???? HE DIDINT SAY rb26DETT

MORE lIKE 3-4k


AND I DONT THINK THE LOCAL SHOP WILL SAY 11 GRAND FOR IT

more like 5

as for whats better??

THE HELL KINNA QUES.....

id say rb25det

Dude, the 1JZ will wipe the floor with the RB25. Forget Nissan loyalty. The bottom end will hold 800hp stock, the cams and head designs are far superior, it has none of the Lag issues the 2JZ has, and its parellel turbos are high ly superior the the sequential turbos the 2JZ has, or the single turbo of the RB25. It revs till kingdom come, and is soo smooth. And the noises it makes..mmm..

That said, unless your drag racing, none of these motors are worth a 2nd glance. The weight distributuion and weight benefits arent worth it.

Dart Izumi only gopt away with this in D1 because his car isa track slut, so they were able to get 52/48 weight distribution by stripping out the whole damn car, but the 1JZ is lighter still than an RB25.

If you want to drag, which is what the 2.5L 6-cyl. engines are good for, you should be looking at a Supra or RX7, because a drag 240 is a waste of a highly capable platform

Turbo2nr-the 1JZ is just a de-stroked 2JZ, destroked to 2.5L, and with a paralell instead of sequential turbo system

[mrflip69]

Was the 1jz only offered on JDM supras? What years is it found? 89-92?

[Dorikin]

It was offered on Mk.III Kouki Supras(89-92 I belvie), JZX90, JZX100 and JZX110 Cresta, Chaser and Mark.II Tourer V, JZZ30 Soarer(Lexus SC300), and the JDM Aristo JZS147(old school Lexus GS300)

Most come with auto trannys, but a variety of 6-speeds, namely the Tremec T56 will bolt up. Contrary to popular belief, you dont need to pay 6grand for a Supra box, because they also came on the Mustang, Camaro, Viper, and other domestics ricers love to hate

[turbo2nr]

hey cool some thing new to look into. sounds intresting hows the power band on this motor is it hi reving? of low end or mid range? also does ne1 have a pic thanks
1

[NightXCZ77]

This is really really funny....you should get an award! I will respond with a Smiley...then type what I need to type.

Originally Posted by nissan240sxdude

Well here are specs on both the RB25DE-T and the 2JZ-GTE. Unless you want throw away all your cash go with the RB25DE-T because the 2JZ-GTE costs $11,000 for installation because you need new engine mounts, custom fabrication, and it is not a Nissan engine.


RB25DE-T

Engine Cost: $5,000-6,500 $3250 from me
Install Cost:$2,500-3,000 $1250 plus $350 plus $400...(driveshaft)
Stock Horse power: 247 @ 6000 rpm
Stock Torque: 217lb/ft @ 4800 rpm
Redline: 8,000 rpm Try 6800....8k is the RB20DET or RB26DETT
Turbo: N/A T3/T25 Hybrid
Stock Boost: N/A 7-9 PSI
0-60 mph: N/A
1/4 mile: N/A
Modified Horsepower: 400-450hp Over 500 on stock internals

2JZ-GTE

Engine Cost: $2,000
Install Cost:$11,000 Bring it to me...I'll charge about half of that.
Stock Horse power: 320 @ 5800 rpm JDM engines are limited to 280
Stock Torque: 315lb/ft @ 4000 rpm
Redline: 6,800 rpm
Turbo: Steel CT12B
Stock Boost: N/A
0-60 mph: N/A
1/4 mile: N/A
Modified Horsepower: 550-650hp

Well good luck with your 240sx.

-nissan240sxdude

You got a lotta learnin to do....read more before you decide to give advice or price quotes for that matter.

Night

[NightXCZ77]

Originally Posted by Dorikin

That said, unless your drag racing, none of these motors are worth a 2nd glance. The weight distributuion and weight benefits arent worth it.

Actually, my RB25DET powered 240 has a 52/48 distribution...it drives, drags, and drifts just fine. Myself along with many other RB25 240 owners agree that the car handles better with the RB than it did with the KA. Until you've driven and handled the car...leave heresay to people with less respect than your 1600 posts.

Night

[mrflip69]

USDM 2jz-gte was rated at 320 wasnt it! Hey night, where in arizona is your shop? How long would you estimate, would it take to install a 2jz into a 90' 240sx? That'd be a completely street legal swap in california wouldn't it? (only reason I wouldn't go with any of the RB or SR engines... cuz' the chp been crackin down lately on any "illegal" modifications poppin hoods and stuff )