sr20det into a q45

[fyneyoungstunna]

well i was just curious i didnt see any info on the swap . anyone point me in the right direction???what about a ca18 . or an engine lighter and less gas guzzling than the original q engine

[si]

If you're that worried about fuel economy then you shouldnt be driving a Q45! A 2L 4cyl motor in a ~4000lb car? That would be a pig to drive! The conversion would cost you a bit too, so instead just save that cash and use it to keep putting fuel into the Q

[Jesda]

Not a good idea. You'll lose out on performance, cruising comfort, and possibly end up with worse fuel economy. I suggest selling your Q.

[Rex]

There's someone (midnightsliding, I think) swapping an RB in one, but if you're not using a high torque capable engine, you'd be hamstringing yourself significantly. And (IMHO) by the time you drove the 4 cylinder hard enough to move the 4000 lb Q, you'd see very little MPG improvement.

[Jeff Williams]

Usually, it's the 240 guys wanting to put A VH45 or VH41 in their cars.

Now, if you were going to twin turbo the motor, that would be a different animal all together!

[fyneyoungstunna]

lolsorry guys i dont own a q but i was thinking about it or a m30. so the vg's are the way to go in these cars?? what about vq. someone educate the neewb

[Rex]

lolsorry guys i dont own a q but i was thinking about it or a m30. so the vg's are the way to go in these cars?? what about vq. someone educate the neewb

The G50/Q45 came with the VH45DE. The FY33/Q45 came with the VH41DE.

The M30 and J30 both had the VG30, runmor has it of some swapped 300ZX TT swaps into these, but I've never seen one first hand. The M30 was an F31 in JDM and had several "other" engine options.

Hope that helps.

[irax]

they guy fromd driftday has a sr20det powerd m30, i personaly would like to see either a twin turbo VQ35DETT or supercharged VQ35DEZ in a q45... but thats just me... i love the sound of a VQ35DE supercharged...

[maxnix]

Well, there are the Vega and the twin Harley swaps.

[velvet hammer]

A 2L 4cyl motor in a ~4000lb car? That would be a pig to drive!

its easy to get 200rwkw with a mountain of torque from an sr20det plusyou would get better handling from lighter engine sitting futher back in engine bay. But if i was going to the effort of an engine conversion id go for a 2jzgte.

[elwesso]

a 2jzgte.

In a nissan??..... EWWWWWWW

[MinisterofDOOM]

In a nissan??..... EWWWWWWW

Yup. I'd love to put one in an R34.

[elwesso]

Yikes. a toyota motor (from the supra right?) in a nissan skyline... thats the ultimate sin!

[Q45tech]

Over a fairly narrow range it takes the same amount of gasoline to make a horsepower or a pound foot of torque!......... 0.5 pounds per hour ~+-.

One should weigh an inline iron block 6 or 4 before thinking an all aluminum V8 is that much heavier...........sure a few hundred pounds but the RWD and drive shaft and diff and rear suspension is the bulk of the weight...............why not just buy a FWD Buick with a 3.8 liter if a few mpg matters.

"Toyotas money crunchers must have done back flips when production costs for the new engine were halved to about $1,000 per 3.5-liter V6, what will soon become one of its most popular engines. The new V6, currently residing in the recently redone Avalon and completely revised top-level 2006 RAV4, replaces both 3.0- and 3.3-liter V6 engines for the all-new 2007 Camry when it goes on sale in March, the best-selling car in the U.S. The engine will also be the motivating force behind the new 2007 Highlander and should soon find its way into the Sienna minivan and replacement for the Camry Solara coupe and convertible models, plus a number of Lexus models including the new 2007 ES 350 sedan and RX 350 crossover SUV. A version of this V6, the same 306-horsepower version that is used in the new IS 350, is also expected to replace the less powerful inline-6 in the GS 300, plus the more conservatively tuned version could very well power a rumored compact Lexus crossover SUV based on the new RAV4, being designed to go up against Acuras new RDX and BMWs X3.

Putting this into context, Toyota has not only managed to halve the cost of its most popular six-cylinder engine, but the very fact this same engine is used in so many vehicles will, through economies of scale, increase Toyotas profitability overall. Compare this to rival General Motors, the worlds largest automaker and one that looks as if it will soon be passed by the Japanese giant for overall global sales, which makes so many engines V6 engines that its difficult to keep track of them all. A lesson could be learned, with the General producing a variety of antiquated overhead-valve engines with only 3-valves per cylinder, measuring 3.4-, 3.5-, 3.8- and 3.9-liters in displacement, plus a supercharged 3.8-liter version in its Pontiac Grand Prix. Only Cadillacs 3.6-liter V6 boasts four-valve per cylinder and dual overhead cam technology, an engine also found in Buicks top-line LaCrosse. To complicate things even further, it could be argued that GMs most sophisticated V6 is the 3.5-liter mill found in the top-line Saturn VUE, but the fact that its nothing less than Hondas superb Accord V6 is no doubt embarrassing to the Detroit-based automakers execs.

The question that General Motors should be asking itself is, why make a total of six V6 engines and borrow another from Honda, adding complexity and resultant cost to the automakers bottom line, when the only truly competitive GM V6 to Toyotas 3.5, or for that matter Hondas 3.5-, Nissans 3.5-, Hyundais 3.3- and 3.8-, or Fords all-new 3.5-liter V6, is the 3.6-liter unit only available in the Cadillac CTS, SRX and STS, plus the LaCrosse? Wouldnt it be simpler, more efficient and therefore potentially cheaper to make one extremely good V6 engine, rather than five that dont really measure up to the competition?

In contrast to GM, Ford has long produced one V6 engine for most car applications, the 3.0-liter Duratec 30 with dual overhead cams and 24-valves per cylinder. It was a very competitive engine when introduced, and now that an all-new 3.5-liter is being readied for a full-line introduction, blue-oval products will have no problem lining up to their Asian and German competitors.

Likewise, Toyotas new 3.5-liter V6 not only measures up, but leads its rivals in every category its entered in. A sophisticated four-valve, DOHC, V6 with proprietary dual variable-valve timing, it makes a stunning 268-horsepower and 248 lb-ft of torque in Camry trim and 280-horsepower plus 260 lb-ft of torque when fitted to the Avalon. "

[Nick240sx]

Yikes. a toyota motor (from the supra right?) in a nissan skyline... thats the ultimate sin!

how many hail marys must one say to be relieved of this sin. i mean come on thats like putting a BMW motor in a benz or vice versa. talkabout contradictory setup

[MinisterofDOOM]

Yikes. a toyota motor (from the supra right?) in a nissan skyline... thats the ultimate sin!

Yeah, from the MKIV Supra Turbo. 3 liter twin turbo straight six. It's more my style of motor than the rev happy RB.

Basically the perfect Japanese supercar. IMO, the R34 is a better car than the JZA80, but the 2JZ-GTE is a better motor than the RB26DETT. The best of the best.

[irax]

alot of people do this, inwich i dont understand.. why do you compair a 3.0 vs a 2.6 ? I never seen some one say 'rev happy' with negitive condintation..

[MinisterofDOOM]

Just a matter of preference. I prefer engines with lower redlines and earlier, flatter torque curves, and I generally dislike motors with high redlines and later, steeper torque curves. I still definitely respect and like the RB, but the 2JZ is more my style.

Sorry for the massive hijack guys.

[irax]

if you want a motor for better gas miledge... get a stronger motor from a heavier car that already gets as much gas miledge... ex

chevy camaro with 350 gets about 30 mpg in 6th gear (real life highway miles)rx7 with that same sbc gets upwards of 40mpg in that same 6th gear....

or just get an adapter plate and put in a 5/6 speed transmission and the rpms will be lower so your gas milage will... well should... be better

[hannibal]

SR20, no way! RB25/26 or VG-TT, sounds like fun...

It would take an awesome 6 cyl turbo setup for me to choose it over the VH41/45. Torque, from an SR? For a 'mountain of torque', please see the VH45...

MoD, compare an RB30DETT to a 2JZ-GTE. Thats a fairer fight. You get all your torque without having to ring the motor's neck.

[irax]

to get back on topic... i think a v10 viper motor would be a cool swap...

[MinisterofDOOM]

Absolutely. Or a 572 chevy big block.

MoD, compare an RB30DETT to a 2JZ-GTE. Thats a fairer fight. You get all your torque without having to ring the motor's neck.

I see what you mean, but you missed my point. I'm not just throwing out random engines and comparing them. The GT-R comes with an RB26, not an RB30. My point was that if I had a GT-R, I'd happily swap in a Toyota motor (the 2JZ) to improve it. Also, AFAIK, there was no RB30DETT. The only RB30s were single cam.

EDIT: No freaking idea why there was a frowny face there...I must have clicked it accidentally. I made him smiling now.

[hannibal]

Yeah, youre right. Some Aussie cars had a RB30E or RB30ET. Apparently, you can swap on RB DOHC head.

Cant say anything bad about the Supra motor.

Nearly back on topic, I wanna see how midnightsliding's RB powered G50 turns out. He was doing major work, like cutting the firewall to slide the motor back. I think he was building it for drifting.

[irax]

yeah too bad he's not in cali we could have a q45 drift team going on :-p but nope he's in like atlanta or some place like that..

[velvet hammer]

Where i live you can buy two 1jzgte's and a 2jzgte for the price of one rb26dett

Yeah, from the MKIV Supra Turbo. 3 liter twin turbo straight six. It's more my style of motor than the rev happy RB.

Basically the perfect Japanese supercar. IMO, the R34 is a better car than the JZA80, but the 2JZ-GTE is a better motor than the RB26DETT. The best of the best.

[irax]

thats probably because those motors are common where you are. in the USA for the most part 1j > rb26dett = 2j > rb25 > sr20 > rb20 > ca18 > KA24 price wise...

[sijoko]

If there was some weakness in the VH45DE, then I can understand swapping in another engine.

But the VH45 is one of the strongest engines that Nissan made.

How many production V-8s came with these features?

- Forged Crank- Six Bolt Main Caps- Full Length Crank Girdle- Deep Skirt Block- 6900 rpm Rev limit

I think the Rods are also Forged but can't find any confirmation at this time. Just something that sticks in my mind.

Swapping in a smaller engine is not the best way to motivate a 4000 lbs luxury car. Even if you can strip it down to 3500 lbs, you are still handicapped with a poor power-to-weight ratio with a smaller and weaker engine.

The best thing would be to modify the Q45 with the VH45DE setup. I would take out all the unnecessary stuff such as A/C. There is room in the engine bay for a decent turbo setup once some re-arranging is done.

There is a guy with a Z32 that has a VH45DE in it. He has a twin turbo setup that is running 10 lbs of boost. That would put the power levels at near 500 hp.

The VH has potential to be a killer engine with the right development.

[irax]

yeah if i were to swap in any motor into a q45 realisticly it would be one of 3 motors... a new nissan v8, a vq35de with stage 3 stillen supercharger, or a LS1 with a t-6 transmission...

[Ozzie]

Yeah, youre right. Some Aussie cars had a RB30E or RB30ET. Apparently, you can swap on RB DOHC head.

Cant say anything bad about the Supra motor.

Nearly back on topic, I wanna see how midnightsliding's RB powered G50 turns out. He was doing major work, like cutting the firewall to slide the motor back. I think he was building it for drifting.

Sorry to drive this off topic, but yes, the RB25 and RB26 heads will bolt onto the RB30 block, with some modification necessary, but not a too difficult task.

Here's an article showing the single cam RB30 turbo, and a twin cam converted RB30 turbo. (9 pages)

http://www.ozzie.q45.org/Other/

[hannibal]

^ Nice article! Thanks for the additional info...