Choosing The Right Engine

[Hterrygqt]

RRob: Yeh GQs had the RB standard, Ive got the GU 2.8 and its rubbish. Got to about 90 tops pullin a charade on a car trailer . How did you mod the head to fit on the 30 block, something about oil lines to vvt pully and taping a tread for the timing belt adjuster. I want to run a GT35 on my RB30/25 with some head work , hoping for 300rwhp plus on 35s.

Edited January 28, 2013 by Hterrygqt

[Cowboy1600]

As Steve200b said, if you want to do it legally, it's going to cost you an arm and a leg.

Edited January 28, 2013 by Cowboy1600

[steve200b]

The patrol rb30 has a higher comp ratio than r31 or vl motors. You don't need to go down the twin cam road if your not chasing huge power. Second gear skids with 35's on the road is easy for a single cam if you do it right

[Hterrygqt]

Wouldnt a twin cam put out more power and torque then a single cam, as i would have to source a rb30 motor would be easyer to find and probley cheaper then a rb30 out of a patrol

[wolverine]

RIPS supplied RB30 is pretty hard to beat on price unless you just want to build a slapper.

A smaller turbo than a GT35 would be a better choice based on what you want to achieve.

[34GeeTeeTee]

RIPS supplied RB30 is pretty hard to beat on price unless you just want to build a slapper.

A smaller turbo than a GT35 would be a better choice based on what you want to achieve.

Ahem.... Like a cheap 3082

[Hterrygqt]

Is RIPS a engine builder? Does anyone have a website for them? And would a twin cam put down more torque then a single??

[Cowboy1600]

http://www.ripsltd.com/

TC vs SC isn't really the determining factor with torque. Capacity, stroke and turbo have a far greater effect. Forget the TC vs SC.

NB: RIPS is in NZ so factor in a few hundred to a thousand or so for shipping. Still probably the best way to go.

[Hterrygqt]

Cheers mate just sent them a email then. Iam leaning towards a RB30et now for price and they seem to have some good figures , ill see wat RIPS says and make a decition then, any other RB engine builders you know of?

[Rolls]

Sell the car.

Buy a car with a proper motor in it, why the hell would you waste money doing a conversion at $5k + to convert? You can BUY an entire 4WD for $5k!!!!!!!

[Hterrygqt]

You can buy a 4wd for 5k and it would be piece of shit, and i would have to rebuild it soon anyway, its all about having something different then the next bloke.

[GTSBoy]

Oh, so here we go again. The "something different" approach that ends up costing much more money and is nowhere near as good as taking the sensible option.

For the record, the sensible option is rebuild + more boost + LPG.

[Hterrygqt]

Gtsboy - Do you know anything about patrols, diesels or even anything to do with rebuilds and conversions??. Ive said 1000 times the 2.8 diesel in my patrol is a piece of shit, its about 60hp. These engines arent reliable and more boost and lpg will make it worse. Its not always about how much money it will cost. A RB30 will out proform and is much more reliable, and tge 2.8 wouldnt be much better on fuel. Dont just say boost and lpg the 2.8 doesnt need a hand the the scrap heap mate.

[GTSBoy]

RD28T is about 120 HP. Also about 250 Nm. Not heaps of torque. But add some boost and some LPG and you will go well over 300 Nm and from low rpm.

I think you will find that I did my first rebuild of a diesel engine (a Mercedes 240D engine, that REALLY had only about 60 HP) back in the mid 1980s. I think you will find that I have personally done several engine conversions. I think you will find that I have done several rebuilds. I think you will find that I know what I'm talking about, and would choose a turbo diesel over a revvy petrol 6 in a big 4WD every time and I f**king hate turbo diesels.

LPG fumigation is a proven and excellent method of making turbo diesels go better, especially on the old, crude ones like your RD.

I gave you sound advice. Not my fault if you don't want to hear it. Sorry about f**king with you in your other thread. It was too funny and I couldn't help myself.

[Hterrygqt]

Mate it may be 120hp new and at the flywheel, its now a 230,000km old engine and power at the wheels is wat people want to know. The thread is about choosing the right engine from the 3 options ive given, not a open thread on wats the sensible option or go put a v8 in it.

Also you must not know how to read, I DONT WANT THE RD28 , its a shit motor and added boost and lpg are going to f*ck it even quicker,

The options were RB30/25, RB30et or RB25det, how is it hard to choose from them options????

[GTSBoy]

The options are

1) lick a cane toad

2) lick a cane toad

3) lick a cane toad

4) REBUILD and improve what you have which will be much less pain and much better result.

[Hterrygqt]

Why do you sit there and argue the point with something you have NO idea on?? Just child brain out to p*ss people off

[Hanaldo]

I want to run a GT35 on my RB30/25 with some head work , hoping for 300rwhp plus on 35s.

Go build the 2530 then, why are you still here asking for advice when you have clearly already made up your mind and don't want advice?

[ARTZ]

I'm with rolls buy a new truck..old fourbys are just deathtrap money pits all over...

220nm is rubbish..my bt50 puts out over 400nm and its just a 2.5lt..so either put money towards a newer generation of diesel.....or for 5 grand you could by a patrol with an rb30 already in it and save the headache, as a bonus you will then have a pile of spares any old patrol owner will inevitably need...otherwise must stick a plain old rb30 in it so you don't waste any more money ..

[Hterrygqt]

5k for the 25/30 build is bugger all since some people spend 10k plus on v8s and the like, my patrol is a 1999 model with a 2.8ltr. I agree 220nm is nothing compaired to moddern diesels thats the reason i want to dump the 2.8 and fit a custom 25/30, these engines are good standard but with some work good really good, Iam not after a another diesel/tourer because i have a D40 navara already. This is a project so even if it uses more fuel its just a fun truck . The RB30/25 is a good engine because using the 30 block gives a decent anount of torque. It will out preform the 2.8 in both power and torque wen matched with the right bolt ons.