After more power 4.2 carby dual fuel

[Bigrig]

I don't wade into any thing without knowing possible all I can before hand what I'm asking about first.
This vehicle is a primary source of transport for my Wife, Kids and G/Kids and simply can't be off the Rd for extended period other than initial fitting and tuning.
If I'm going to do any mods, they have to work first time, not spend the next 2 yrs trying this or that.
Hence the reason I'm being so persistent with this thread.
Thanks to all for input so far.

Leaning towards .

After market ecm.
Reco, balanced efi engine.
molly rings.
oil cooler.
lower comp.
larger injectors.
Performance fuel pump and reg.
tuned pipe header.
twin pipe dump for better flow and reduced lag.
Garrett turbo water and oil.
twin electronic turbo controller.
intercooler with recirculating pressure relief valve.
egt sensor and gauge.
Knock sensor monitor.
pcv catch can.
most pipe work and mods done at home.
head de-comp and both ports smoothed out.
engine and most pipe work done prior to fitting into car and up and running.

possibly install 2nd intake manifold tubes for LPG injection also as alternate fuel.
but this is in first stages of thought and planing.
these 2nd fuel rails are available for additional fuel performance applications.
but would have to be taken into consideration from the build starting point and ecm.
Will see.
but don't expect anything to soon.
as this is a long process to do it right first time as you can appreciate .
Cheers.

Good list mate, bit bloody expensive and I'd bet my left one the truck will be off the road longer than you anticipate even doing it yourself, so just keep that in mind to save further frustration (mine was out for 11 weeks in a period of 17 weeks!!). That equates to a lot of coin also, but choice is yours. I'm sure you've done your research but a quick ballpark below:

1. After market ECM - between $1600-$2100
2. Reco, balanced efi engine - $2000-3000 minimum for a rebuilt one (probably more like $4000)
3. molly rings - $??
4. oil cooler - $250
5. lower comp - machined head $1200 or decomp cylinders $2400
6. larger injectors - $480
7. Performance fuel pump and reg - $280 for pump and $? for regulator (don't know if you'll need it though depending on what ECU you get)
8. tuned pipe header - $500-600
9. twin pipe dump for better flow and reduced lag - $300
10. Garrett turbo water and oil (assuming you mean water and oil intercooled) - $1500-$1700
11. twin electronic turbo controller (why twin??) - $540
12. intercooler with recirculating pressure relief valve - $700
13. egt sensor and gauge - $150
14. Knock sensor monitor - $250
15. pcv catch can (second hand???) - <$100
16. most pipe work and mods done at home - fair enough if you know what you're doing
17. head de-comp and both ports smoothed out - as per point 5 above
18. engine and most pipe work done prior to fitting into car and up and running - if you can do most, not much in service costs, but maybe allow $700 for dyno

That is a big expensive list mate!!! $12,250 on the cheaper side of every point above and not including dyno. Will be following your build with great interest - please post updates as you go once you decide which way you're heading. By doing the work you've said yourself, you'll be saving at least $4-5000 in installation ... sincere best of luck with it.

Bound to be a bottler!!

[Robo]

Yeah decent list that's why I suggest you don't hold ya breath.
All/most R and R and build by me.
Pipes intercooler alloy pre bent and tig and home.
turbo is both water and oil cartridge
intercooler proberly air only,
porting+ lower comp head work me.
rods, pistons balance me.
twin boost controller possibly of dual fuel and dual fuel maps.
Not patting myself on back, but this isn't my first time round in extensive engine mods done mostly from home.
will build another long engine on stand and swap out my self, with as much of the auxiliary work done prior to this as humanly possible to get it over ASAP.
I have a rather well tooled garage. over 25 yrs of building up tool supplies to do most of what I want, when I want.
mobile engine hoist, e-stand, trolley jacks.
large work bench strong enough to place complete engine on.
20t press,extensive air tools and hand tools.
stick, mig and tig. etc.
so if I decide to go ahead with this it will be a slow process done mostly by 1 guy in his spare time.
But will be planned to a T so all falls into place as it supposed to.
I've tried going down the path of paying someone to do the work I can do myself, and hate to say this but I've been left wondering more times than not, why did I waste my money, as usually been given something back not quoted on, work not to spec as discussed or simply damage my vehicle.
I've had spoilers smashed, sills damaged, $900 brand new engine pipe crushed ,even incorrect s-plugs installed physically very different not just a number & still swapped out, brand new air filters replaced, bolts left out of bell housing to block with e-swap.
This one tops em all ,after full reco engine was back in an running, was told by e-builder he doubled the clearance on piston and rings as advised by piston manufacturer.
And I had instructed him the build spec was for a tight engine for longer-term street use.
so I've had enough and do it myself mostly now.
Anyway think you get the point of my persistence and wanting to know all I can first.
it will be a while coming but when I start it will happen fast.
Cheers

[Silver]

interesting torque and horsepower numbers for the various patrol engines on Wikipedia
http://www.google.com.au/url?sa=t&rc...HBvqGvgh4kA6GQ

[Robo]

interesting torque and horsepower numbers for the various patrol engines on Wikipedia
http://www.google.com.au/url?sa=t&rc...HBvqGvgh4kA6GQ

Wt hell, 397 klm per hr in a swb!!.
Stig where are you, test drive this one round the track.

[Ben-e-boy]

that kind of work will require you to lose the dual fuel. straight gas or straight petrol

[Robo]

no computer out there to run dual fuel maps?

[Ben-e-boy]

no computer out there to run dual fuel maps?

dunno about the computer but trying to tune both fuels is very difficult

[97_gq_lwb]

The factory tb42e computer can run more maps easily if you want to just fit a larger eprom like a 27c512 or (27sf512 electronic erase)stack two bin files and switch memory addresses

[Robo]

The factory tb42e computer can run more maps easily if you want to just fit a larger eprom like a 27c512 or (27sf512 electronic erase)stack two bin files and switch memory addresses

Now I think about it I know of someone who's supposed to be the ants pants with ecm, will have to try and contact him if possible.
and get something as you mention together before hand to drop in when ready to tune, sounds good.
another one for the list.
thanks for reminding me I know of someone in the know.
cheers

[MudSlut]

drop the RB26 out of your GTR into your patrol, it will go then!!