ENGINE SWAPS FOR GQ

[Red Rover]

what diff ratios does she run? On road i run 285's, 35's off

Thanks

[MrMaxi]

Value for money I think the easiest conversion would be the rb30et or even a rb25det , I've had a fair bit experience with the 3ltr having a vl turbo up until recently, they're a very strong motor and can take a lot of punishment. I was making 160rwkw on a std motor with std computer injector etc and a lift pump. the torque figure was 830nm (2nd gear, auto kicks down on the dyno) With the correct combination of stall converters i think it would be ideal for off road and hwy.

PS will the 3ltr transfer case handle the rb30et ?

[getdirty]

what diff ratios does she run? On road i run 285's, 35's off

Thanks

Well this is a bit tricky because she also has the gearbox out of a 3ltr/2.8ltr GQ which has different ratios to a 4.2 GQ gearbox. So standard would be 4.3 and at the moment she runs 4.88:1 ratios, had 4.6's before that.

I had 4.1 diffs with 35's in mine and now have 4.6 diffs, to be honest there is not a whole lot of difference......

[Red Rover]

MIne is a TB42 4.3 diifs with 285/35 tyres. You think it would be OK? I looked at efi conversion & turboing that motor but ive heard bad reports about them blowing up, but again believe nothing that u hear and half of what u see kind of stuff

[getdirty]

It will be ok, just might be a little laggy..... if you find it is get ratios next..... you can get 4.8's off the shelf.....

[Red Rover]

COOL - mmm Now where has that trading post gone too!

[getdirty]

I know there is a complete VL turbo motor on ebay at the moment..... .remember that you'll also need a gearbox from a 3ltr petrol gq or a 2.8 diesel gq....... and let me tell you that they are not cheap

[Red Rover]

I know a guy who wants a 4.2 petrol so a swap may be the go! I wonder if a twin cam head offa rb26/28 would go a RB30. Rb30 blocks are a dime a dozen and I can get a RB26/28 complete cheap, but 3l would b better capacity i would think

[getdirty]

I know a guy who wants a 4.2 petrol so a swap may be the go! I wonder if a twin cam head offa rb26/28 would go a RB30. Rb30 blocks are a dime a dozen and I can get a RB26/28 complete cheap, but 3l would b better capacity i would think

Oh.... memories from my VL Turbo days......

An RB25 head is almost a bolt on fit, a bit of filling holes and drilling holes required. HAving said that there really is no point..... all the 9,10 second VLT's that i know of have the standard head.

There are a few differences between the Turbo and non Turbo motors, first things is pistons, then cam and knock sensor...... also manifolds, injectors etc etc.......

I'd just go standard VL Turbo, put a big cooler on, 3" exhaust, and wind 11psi boost into it...... then get bigger injectors, aftermarket management, hi flow turbo and wind more boost in!

[MrMaxi]

Yeah go the Vl turbo motor, basically i achieved 160rwkw with what get dirty just posted 12psi hi flow ported head cooler and 3" turbo back with an extra injector and 15 psi you'd make close to 200rwkw.

[Red Rover]

in what car though? As long as it will have more power than TB42 carby and still crawl up hills with lockers & 4.3 diffs with 285's and 35' claws

[getdirty]

it will have more power that the TB42.... although a hyundai excel motor probably has more power!

Only problem with the VLT motor is that it won't crawl real well...... it will basically have no power at all under 2000rpm....... as long as you are prepared to keep it in boost it will be ok..... need to alter driving style a little.....

[Red Rover]

Out of interest someone mentioned to me a 3.8 commodore v6 would go in because the marks kit for the turbo700 v8 is the same as the v6 t700

I've never seen a gq with a v6

[ORSM45]

kw = torque x rpm.

if you increase rpm, you increase kw.
if you increase torque, you increase kw.

a 6cyl nissan motor wouldnt spin much faster (if any) than a V8. therefor to produce the same kw, it would be producing similar torque.

my opinion would be keep the 4.2L and turbo it, and run a gas research carb.
theres too much stuffing around with engine conversions, at least youve got the engine already installed. see drafty and a few other blokes here who've built 4.2s up. making 200rwkw, and they didnt have to stuff around with tail shaft lenghts, crossmember positioning, etc.
(or am i talking about a different 4.2? whats the difference? beside carby vs EFI, coz when you go to gas none of that matters)

and if youre gonna spend your money on a different engine, dont waste it on a holden V6. its smaller than what youve got anyway.

[Red Rover]

I know that car, used to be Brents at Wizard - photo was taken at cruiser park coming down the side track at hilux hill - am i right. Thanks for the help, now a lot to think about. I have always liked factory engines due to the fact everything is factory.

Thanks Red Rover

[bogged]

I have always liked factory engines due to the fact everything is factory.

So sticking with a non turbo stock motor then?

[bogged]

Nissan Infinity VH45-V8 Natural Aspirated Auto 2WD FR 1 $3,500

Please note all Half Cuts are sold Undressed, meaning they are complete Half cuts, but in most cases panel, lights, instrument cluster, A/C controls and in some case brakes have been removed. But these cuts are kept intact enough so as they can be run in the cut, therefore giving you all that is needed to do an engine conversion. We can sometimes supply complete cut's but often these parts mentioned have been removed in Japan.

http://www.japparts.com.au/products/sto ... ving2.html

[Red Rover]

Don't know - but if I can still retain some reliability with supercharger then I will most likely persue this avenue. it maybe better to buy a complete EFI one and go from there - about $3000- either that or a 5 ltr holden as there are plenty of parts for them . May not be factory, but at least there are plenty of bits. MMMM plenty of food for thought. f i can just het it up to say 180kw i would be happy

Thanks Red Rover

[bogged]

Don't know - but if I can still retain some reliability with supercharger then I will most likely persue this avenue. it maybe better to buy a complete EFI one and go from there - about $3000- either that or a 5 ltr holden as there are plenty of parts for them . May not be factory, but at least there are plenty of bits. MMMM plenty of food for thought. f i can just het it up to say 180kw i would be happy

Thanks Red Rover

So $3000 for a EFI TB42 or $3500 for a V8? with more neddies...

[Red Rover]

mmmmm more neddies me thinks!

Thanks

[Bozz]

Firstly, I'm a new member here, I signed up after reading this thread that people have experience with the VH45DE motor.

I dont own a 4WD (yet love going 4WDing) but am after a bit more info about the VH45. I'm wishing to put it into an R31 Nissan Skyline for originality, something that can tow and because I like to do difficult and stupid things I'll be pulling out an RB25DET to make way for the V8.

A few questions;

How do you mate the VH45 to a manual gearbox? I notice people are saying they are putting the patrol box on the end of the VH45. Is the bellhousing identical to a 4WD manual gearbox or do you have some sort of bellhousing adaptor? Or can you perhaps even swap the bellhousing from the VH auto to a Patrol box? Any info here would be much appreciated. I have the RB25DET manual gearbox (the big strong one) and would like to keep it, I'd hate to go automatic but I will if I have to.

The R31 has 71cm between the chassis rails and 80cm between strut towers. Could someone with a patrol please measure how much distance they have so I can compare (I know it will be a lot more, just for reference please)

If it's OK, I'll post more Q's as the project progresses or if it becomes a miserable failure.

Cheers

[Snatchy]

Hi Bozz
I have been looking at the VH45 and VH41 to shove in my patrol too. From what i have gathered they only come with auto boxes behind them, and no one yet makes an adaptor to mate the engine to a manual box. So a custom adaptor it is if you want to join it to a Manual box, whatever it is. By the way, the Nissan patrol manual box is a very heavy prick.
Good luck

[Bozz]

Well everyone can ignore me, the motor can fit but it will require new exhaust headers made up and modified air con & power steering hoses or different pumps altogether. I have a thread on another forum I'll link to if anyone's interested in reading the whole saga and there's a fair bit more info on these motors;

http://board.performanceforums.com/foru ... d=67166965

I *could* do the job and it *could fit* but its too much stuffing around. So i'm not going to attempt it for now at least.

[pato castro]

A guy around here put a Chevy 502 HT with a Whipple supercharger and a TH 400 tranny on one of the 4-door GQ's, he builds it specifically for the dunes, and i'll see him in action, starting this tuesday 27 of January on the biggest 4x4 event here in Chile:
www.raid-atacama.cl

[-Mick-]

Want an engine conversion........ HELL YEAH!!!! (QLD)

Nissan GQ 383 Chev complete conversion, 12mths old, straight gas, adaptor, radiator, all accessories, test drive, cost $10,000, PC -$5000 Narangba (07) 3886 9475

Same guy I think, must have been a weapon GQ

Nissan GQ SWB custom barwork, rollcage external, rear sill cut off bars, side step sill protection, bomb proof, GC -$800 Narangba (07) 3886 9475

[hazard]

A few questions;

How do you mate the VH45 to a manual gearbox? I notice people are saying they are putting the patrol box on the end of the VH45. Is the bellhousing identical to a 4WD manual gearbox or do you have some sort of bellhousing adaptor? Or can you perhaps even swap the bellhousing from the VH auto to a Patrol box? Any info here would be much appreciated. I have the RB25DET manual gearbox (the big strong one) and would like to keep it, I'd hate to go automatic but I will if I have to.



Cheers

There is no manual box that bolts up to the VH motors. You will have to make a custom bellhousing. The Infiniti auto is a RE4R03A which is the same as a Patrol and 300ZX turbo with minor differences in the valve body, electronics and ratios depending on the year. The torque converter is also heaps bigger in the Infiniti.The auto is heaps lighter and smaller than the Patrol 4.2 manual and is strong enough to handle some abuse.

[hazard]

kyle is right, there is fuk all you would need to worry about. the inside of these things are basically race-prepped from the factory, de-burred, everything honed, ultra reliable. all the ancilary shit is out-sourced anyway, so will be the same as some other car somewhere...

More thinking of basic things, not things like pistons etc.. things like belts, gaskets, waterpumps housings, etc..

I remounted all of the Infiniti ancillaries in different positions when I fitted mine so everything would be available from Nissan. The oil filter is available at every corner service station (Z145A) as are the multi vee belts (I am driving 3 belts - 1 each for power steering, alternator and A/C.). Even the radiator hoses are Patrol...

Infiniti Q45's were sold in Australia so parts are avaliable from Nissan (ie Hornsby Nissan / Infiniti) but you will find that most of the ancillary stuff is interchangable with other Nissan models...

The motors are bullet proof - I have just hooked up tacho to mine and have found that I have been reving it to 8000, and early on it got really really hot on the dyno a few times and spat out its water, but it still starts up every morning and purrs like a kitten!! If you change the water pump at the initial install and do a cam chain ramp update on the 90 - 94 motors it should last longer than the truck...

Value for money these motors rock - it is a relatively easy conversion with the auto. If you throw a couple of turbos at the motor while you are building the exhaust manifold you can watch the look of dismay on the faces of WRX and Clubsport owners as you smoke them from the lights...

[bj on roids]

kyle is right, there is fuk all you would need to worry about. the inside of these things are basically race-prepped from the factory, de-burred, everything honed, ultra reliable. all the ancilary shit is out-sourced anyway, so will be the same as some other car somewhere...

More thinking of basic things, not things like pistons etc.. things like belts, gaskets, waterpumps housings, etc..

I remounted all of the Infiniti ancillaries in different positions when I fitted mine so everything would be available from Nissan. The oil filter is available at every corner service station (Z145A) as are the multi vee belts (I am driving 3 belts - 1 each for power steering, alternator and A/C.). Even the radiator hoses are Patrol...

Infiniti Q45's were sold in Australia so parts are avaliable from Nissan (ie Hornsby Nissan / Infiniti) but you will find that most of the ancillary stuff is interchangable with other Nissan models...

The motors are bullet proof - I have just hooked up tacho to mine and have found that I have been reving it to 8000, and early on it got really really hot on the dyno a few times and spat out its water, but it still starts up every morning and purrs like a kitten!! If you change the water pump at the initial install and do a cam chain ramp update on the 90 - 94 motors it should last longer than the truck...

Value for money these motors rock - it is a relatively easy conversion with the auto. If you throw a couple of turbos at the motor while you are building the exhaust manifold you can watch the look of dismay on the faces of WRX and Clubsport owners as you smoke them from the lights...

Man I gotta see this thing!!

[getdirty]

If you throw a couple of turbos at the motor while you are building the exhaust manifold you can watch the look of dismay on the faces of WRX and Clubsport owners as you smoke them from the lights...

I wouldn't say that I smoked them but I could keep up without the turbos!