[JoshGq]

Hey all,

I have a 91 rb30 patrol and currently have a few problems I need answers to.

First of all - ive got a split in my power steering hose so what I want to know is whether there the same hose as the r31/vl hoses. I doubt they are and if not, has anyone got an idea what sorta price I'm looking at??

Secondly - I pull a spark plug lead off the dizzie and a whole heap of white corosion sh*t falls out, so I've figured I'll replace the cap... So are the caps the same as the ones vl/r31's dizzies?

Finally - I went out 4bing on the weekend and had the patrol on a bit of a angle for a short period of time which lead to having no fuel in the carby... So I'm wondering would it be easier to put a entire efi set up on, replace the engine with a efi one or just go carby/gas or efi/gas??

Any input greatly appreciated...
Thanks

 

[bamr33]

The power steering hose you're better off to get one made up, most auto stores charge like bulls for pre-made hoses and its very unlikely to be the same hose used in vl/r31. The dizzy cap won't be the same either as the vl/r31 have a different distributer.

Mine is still carby and hardly had any issues with fuel. An EFI conversion isn't as easy as it seams, lot of work, lot of wiring, lot of adapting. Better off with straight gas and then you have the option of turboing at a latter stage without buying the expensive tunable computer, injectors, airflowmeter etc. Also vl/r31 gear your looking at 20+ year old parts, bound to have issues with reliability. LPG you just book it in, put the problem in some elses lap and get $1500 rebate from the government.

 

[mattym]

Hey Josh

I've got an RB30 GQ myself, and still pondering along with an EFI conversion... I'll try an answer your questions for you.

1/ No. VL is completely different setup, with their racks etc. Go somewhere like enzed or pirtek, and have the hose fixed for about $100. Plus a few beers while you're pulling the SOB off your 4by

2/ Not too sure, but couldn't picture a massive difference between the two. As Bam said, the distributors are completely different, but not sure on the caps. Either way, RB30 GQ caps are easily had at places like covs, veales, repco etc...

3/ Very common problem with anything carby. Have it on an angle long enough, and it will stall. Sucks I know, and thats half the reason I'm doing the EFI conversion. If you're mechanically minded, then check out your options as far as EFI goes, other wise maybe carby/gas would be a better option? The only thing I don't like about a gas only conversion is, it's hard to carry gas around in the bush...

Cheers and good luck! Let us know what you end up doing

 

[Evo's GU]

I have a 91 ST30 as well and have both 2nd & 3rd issues but power steer all good atm.

1. I agree with mattym go and see pertek.
2. The caps ARE intercahangable as i have got both dizzies and have swapped the caps during my EFI conversion.
3. Go EFI you will not look back!! its easy for someone who is a bit mechanically minded the wiring is pretty easy, you can find all the info on here just like i did, everyone was so helpful.
4. I DONT LIKE GAS either, harder to get out in the bush if you run out and in a couple of years the gov will have there fingers in the pie for there tax and soon enough it is tipped not to be any cheaper to run a big thursty car on gas soon enough.

Just my 2c worth anyway. hope this helps.

 

[Steve-O]

Well ive got an rb30 patrol as well, replaced my cap $35, Rotor $42 and spark plugs $35 (Repco). Heavey duty leads are a good idea as well because the standard ones are no good Supercheap $100 and they are better isolated, thicker and the rubber caps really hold and seal. Full second had vl EFI system with wiring and loom $350 +- from Auto recyclers, comes with warranty. If you not happy with the EFI setup as there are mixed emotions over the performace gains, just straight gas it and possibly turbo.


Just my thoughts

 

[wompa]

I personally found quite a bit of difference in power gains. my torque gains on the highway travelling at 80-110km/h are awsome. don't get me wrong i am comparing these gains to the old carby which i personally found poor. i changed to whole engin over not just the efi system and i am pretty sure the efi and carby engins run different cams which would warrant these high RPM torque gains.

At the end of the day the biggest thing with the carby RB30 (my carby rb30) was the fkn stalling on fkn hills. It left me stranded in alot of fkn dangerous positions. i absoultley hated the carby. Anyone that does alot of offroad in an rb30 patrol will absolutely benefit from the efi conversion.

 

[chillidawg]

cpi or centre point injectors maybe insted of efi conversion.

 

[jonsey850]

efi from vl is not that hard just need to know what your doing before you start cutting wires. the only thing that has to be wired up is the fuel pump which is activated to earth by the ecu the rest is fairly easy. I got a vr berlina pump and it fitted straight into the holder for the patrol lift pump. Here is all the documents you will need to do it. You could do it in one day if you dont run into any problems. Also you will have to add a tee into the heater hoses for suit the vl intake.

 

[JoshGq]

Called round to find the best price on a power steering hose, on average im looking around $175 to get mine re-conditioned. But my mate got onto someone he knows who will make a new one and fit it for $160....



Still undecided on efi, but can get all the gear cheap through mates who have rb30's lying round. The trouble is we could fit the majority of it, we would just struggle with the wiring i reckon.



However, my mates got a 6 month old gas set up on his r31 skyline and offered to sell it to me, its just that im unsure what i could take off it, so any info would be greatly appreciated.

 

[Evo's GU]

Im with Wompa on this one i changed the complete engine and have heaps of improvement, i also heard the cams are different therefore very little change in power if you use the carby engine with the efi gear.
Conversion is pretty simple, i also got rid of the clutch fan in exchange for twin thermo's and fitted a snorkel, i gained around 150km per tank around town and a **** load more grunt, oh and extractors with a hi-flow 2.5" system

 

[Evo's GU]

here is some pics of my truck after the conversion.

 

[Evo's GU]

If you use everything R31 it is easier

 

[GQ TANK]

Jonsey or EVO could you load the wiring details, as files that we can down load.

Im in the midst if putting a rb30 innto my MK and the diagram is a great help

 

[Brunsy]

take your hose to enzed or pirtek, they will remanufacture one for way less.

Follow my link http://www.patrol4x4.com/forum/diy-...s-40/turbo-your-gqrb30-42140/?highlight=turbo

did this conversion to my patrol way back in the day, I compiled all the notes, did all the hard work so its damm easy for you guys.

Just efi it first (no turbo) should cost only $200, dont believe all the bullsh*t about heaps of wiring its not true. Once its efi'd its a piece of pis(s to turbo, if you even want too. Efi and extractors, 17deg of timing and premium make a big difference.

If you get stuck PM me I may still remember some of the tricks.

 

[ar3nbe]

For all those who have gone to EFI, how have you found the electronics during water crossings ?

Ive heard that the CAS is quite touchy with water.

 

[Brunsy]

Yes the cas can be sensitive to moisture even in a road going rb30. I never experienced a problem as I always bought a new CAS with every conversion that I did, I also got a re-manufactured AFM so that I could always establish a nice running baseline.

Never really had a problem, they only tend to fail when they are old, ie 20yrs. Just like any other electrical component. Some guys have fancy boost blow out for the dizzy, just more crap in my opinion. Then again I dont do mud holes or comp work, just the occaisonal deep water crossing.

I always carried and old CAS in the tool box just incase.

 

[jonsey850]

will put them up or e-mail them to you on monday all the files are on my work computer

 

[Steelo]

I've got a 91 (built Dec 90) plated RB30 & with 298 000k's on the clock & found a big difference just doing the carby base plate mod, new (Condomodre) heavy duty sports leads & extractors. I've never had any probs with steep slope's as yet, touch wood, but am also interested in either turbo &/or EFI, gas doesn't interest me as too hard to get in some places. I dream about supercharging it but there's none out there.
Oh & I also had the white powder prob in the dizzy to start with so I cleaned it out, vent especially, & no probs since.

 

[Brunsy]

supercharge it Steelo................ The Buick/GM positive displacement ones are turning up at wreckers now and they would work pretty good on an an RB. I rekon you could even get away with a naturally aspirated ignition map and nat asp injectors if you left the drive ratio standard for 7psi on premium. Would require some crafty bracketry but nothing some shed time couldnt solve.

 

[testa]

If I bought an RB25 skyline motor would all the manifolds turbo bolt on to my carby rb30 motor .. And thn good to go cheers??????????