Outer Limits 4x4 Board

i want more power out of my 4.2 carby engine i dont know weather is worth going to a v8 or bolting on a turbo. i am not a machanic so i am looking at getting some body to do the whole job. any thoughts on engine or a good machanic around the melbourne area would be great. 200hp at the wheels would be just right

V8 is a popular option.

turbo carby'd vehicles are a headache, EFI or straight LPG is best if you go turbo

If your paying someone to do it all then the turbo
option may be cheaper, It really is personal choice as they both have good and bad points. (more good than bad)

Try PGS in melbourne.

I'd personaly go with a Turbo .

Depending on how you drive a Turbo 6 can be less abusive on you're Drivline than a V8, due to the way the power comes on.

With Boost there is a relatively gradual rise in Torque, as it spools up, with a V8 the Torque is right there to break thing's .

Sandy from Aus4wd in Bayswater, does great work, and has done both Conversions

Joel from PGS is in Mornington, so is a lot more local to you, and from what i've heard does gret work as well.

Chris

having driven in both before i did mine, i went with a turbo, its exciting and produces more torque then the v8

i did mine relativly cheaply (3k all up) that doesnt mean i skimped on things, i did all the work myself and used good quality second hand parts for the whole kit, and was lucky i guess.

end result is 147kw at 7psi running straight gas through a b2 and an impco 225

I agree with cookie monsta that the turbo is sooooo much more fun,
I sacrificed some kw to get lots of torque, I went a smaller turbo to spool up really early. I've only got 135 rwkw but a tad over 1100 Nm of torque starting at 1500rpm and drops to around 1000Nm at 3200 rpm.

In the real world hills are nearly non existent, up the bush changing down a gear for a steep section is not needed as you just put ya foot down and it spools straight away all the way to 7 psi. (wow hahaha)

A V8 with an auto would give the same effect but not as fun as hearing the turbo spool and feeling the power.

BUT each to their own.

Oh and it drinks 98 octane like an alcoholic. (down side)
Oh and all this rain in Victoria I am having sooo much trouble getting traction with a turbo (at least thats what I tell the missus, its the turbo love, not me)

Turbo is better in my opinion , and Ive had both . An example to use is like 2 or 4 stroke motor bikes . An xr 600 is cool but a cr 500 will get you smiling all day long . Give biders a call . Click on the link in my sig line . cheers shane.

turbo for sure

It would all depend on what you wanna do with the truck, towing etc...

also depends on your budget.. $2000 -20,000??

I vote Engine conversion.

I would say the cost of turbo'ing a standard carb engine would be more than say buying an RB30 Turbo.

tuning draw through carby turbo setup's is a dark art, get it wrong and POP go's the weasel.

I looked into it with mine and a v8 conversion was over $10,000 ( drive in drive out)
Turbo with straight gas (no-one bothers with carby turbo) will easily come in under $10,000.
and unless you spend some good dollars on a descent V8, a turbo 6 will easily make more power for less money.

Thats just my opinion though.

yep im with you, like i said before i have done mine on a limited budget and it all came in under 3k, so it can be done.

also the carby is an absolute nightmare, you either have to ditch it, and fit efi if you want petrol or run it straight gas!

chpd80 wrote:I looked into it with mine and a v8 conversion was over $10,000 ( drive in drive out)

For 10gz I'd expect this ----> http://www.youtube.com/watch?v=IOWo8X84fSM

I would reccomend an RB30T fairly straight forward swap, cheap and you could DIY. An RB25 could be used if you want a cheaper engine, But the power of the 3.0L would be better suited for the patrol.

cooki_monsta wrote:having driven in both before i did mine, i went with a turbo, its exciting and produces more torque then the v8

i did mine relativly cheaply (3k all up) that doesnt mean i skimped on things, i did all the work myself and used good quality second hand parts for the whole kit, and was lucky i guess.

end result is 147kw at 7psi running straight gas through a b2 and an impco 225

Pictures. did you take them as you went.

Personally I would want to EFI the engine to run dual fuel and then add a turbo. ( second hand Hitachi unit from a RX7 would do nicely)

This is probably a stupid question, but it is possible to run a turbo on gas and then have the turbo non-operational when switching back to carby on petrol?

I have never had a car with a turbo so I don't know anything about them, sorry if it is a dopey idea.

thanks for the feedback. i drove a 5.o v8 yesterday that belongs to a mates mate and i realy liked the feel of the instiet power but i will defentely look in to both. and would a v8 out of a vn commodore be a good option and should it be under 10 grand. thanks again guys

Jake GQ.. wrote:and would a v8 out of a vn commodore be a good option and should it be under 10 grand.

You can pick up a whole VN V8 Commo for about $6000. with rego !!

To DIY I would budget about $3000 to complete a 5L VN engine conversion. Use the commo wiring, Find some 2nd hand extractors, Modify the Memcal chip for better ecconomy or power. All Included. add at least an extra $3000 for labour and "workshop charges" oils fluids etc.

I was quoted $8000 to put a supercharged 5.7 out of a VX into a VR, Including brake conversion, ECU Chip, Extractors and exhaust. drive in drive out. So maybe that would give you a better idea on what you should pay.

I'm more than happy to take 10gz off your hands and do it for you, but If your prepared to spend that much. Why not buy a 4WD with more balls and save yourself the hassle.

Jake GQ.. wrote:thanks for the feedback. i drove a 5.o v8 yesterday that belongs to a mates mate and i realy liked the feel of the instiet power but i will defentely look in to both. and would a v8 out of a vn commodore be a good option and should it be under 10 grand. thanks again guys

look at the price of adapter kits.. then triple that to give a ROUGH ballpark.... it will be fuckin expensive. 6.5 Diesel Chev into GU was 23k.

Bogged is right, always overestimate what it will cost. Mine doubled to what I had first estimated.

I personally think the 5.0 litre is way too small for the effort, The VN 5.0 lt makes 165kw (brand new and at 4800 rpm) at the flywheel, which translates to 115 at the wheels. The TB42 made 126kw at the flywheel which then is about 90kw at the wheels.
A turbo conversion to your tb42 will at very low boost pressure give you 120rwkw EASY for much less effor and money than the frigin around of a v8 conversion.

If you are going to V8 it then at least put in the 5.7 or bigger. Its a big heavy 4b remember.
And the resale value after a V8 will be about the same as before you did it. IMO.

turbo AND V8

"Turbo AND V8""

Now your talking

i am in the process of doing a v8 conversion in my gq lwb i need to be able to tow other wise i would have gone turbo for sure but while we are on the subject i am on my forth patrol and seen plenty of conversions done and believe if your going to do only do it if your going to go as big as possible in cubes and build it for tourqe i was talking to a bloke the other day in the process of putting a 253 in a gq ute for offroading only will never have a load on it.
just so it was a v8!!
i dont understand why you would spend all that money to go from a 4.2 to a 4.2 just turbo the tb42 with an efi manifold and gas research and the likes of pertronics or msd igniter use 10mm leads andf a 1.3-5 spark gap $3-4000 later and your a tyre fryer from way back 7-10 pound all day and be done with it and only a mod plate for a turbo.
i love my turbo's sierra for driving its a thrill every time
but if you are towing like me to tow the turbo'd toy to the tracks then you need touque and lots of it,


now i have question in this reguard has any one put extractors on a big block chev in a gq??

wonder if you can fit a turbo and manifolds off a GU factory turbo diesel 4.2 on to a 4.2 petrol ??

would think they should bolt up ?

big red wrote:wonder if you can fit a turbo and manifolds off a GU factory turbo diesel 4.2 on to a 4.2 petrol ??

would think they should bolt up ?

well it will all bolt up however turbo will be way to small...

top mount with t3 fange brande new around $500 to suit td42 or tb42

offroader-rama wrote:top mount with t3 fange brande new around $500 to suit td42 or tb42

where from?
pics?

i think i will have to go turbo. on the weekend the car got hot traveling at 100 so i pulled over and basically it was pushing water out of the radiator overflow bottel instiead of recirculating it so i waited for it to cool and drove it the short distance home and took it to the mechanic on monday. he said it was cavation and it would cost $4000 for some replacement head kit including a sealed water pump. one of my mates said it was a load of shit so wee driled 6 1/8 holes in the thermerstat it made it concideberly better but it still dosent recirculate properly any ideas would be good. there is no water in the oil

if the engine is rooted at all the turbo will compound the issues and make it even worse.

go the 8. 5.7 LS1 would be awsome, but you could prolly pick up a 350 chev cheaper.

a proper turbo fitup by a shop will cost about 12G including efi manifold, gt35 turbo and microtech computer fully tuned to around 250hp at the rear tyres. of course gas will be cheaper for some reason, but i like petrol.

an LS1 engine conversion done by a shop will cost roughly 15G drive in drive out.

that is a rough guide only. you may be able to get it done cheaper, i can, but those prices are about what ive been told by a few mechs.

I personally do everything myself, love the fun involved in doing the work and making it fit. i put a ford 5.0 in my patrol for about 5G total... but the motor i got blew up first drive down the street. i should have bought a better condition motor but wanted to be cheap.

Tomo_89 wrote:

offroader-rama wrote:top mount with t3 fange brande new around $500 to suit td42 or tb42

where from?
pics?

my mate brought one about 2 weeks ago, i think it was from baudesert exhaust QLD, i will double check that and get back to you all.
it is cast iron looks factory but making it top mount awsome i thought, wouldnt flow like custom stainless ones but at half the price and realistly your not doing much more than 6000rpm if your lucky so who cares.

my 2c

offroader-rama wrote:i am in the process of doing a v8 conversion in my gq lwb i need to be able to tow other wise i would have gone turbo for sure but while we are on the subject i am on my forth patrol and seen plenty of conversions done and believe if your going to do only do it if your going to go as big as possible in cubes and build it for tourqe i was talking to a bloke the other day in the process of putting a 253 in a gq ute for offroading only will never have a load on it.
just so it was a v8!!
i dont understand why you would spend all that money to go from a 4.2 to a 4.2 just turbo the tb42 with an efi manifold and gas research and the likes of pertronics or msd igniter use 10mm leads andf a 1.3-5 spark gap $3-4000 later and your a tyre fryer from way back 7-10 pound all day and be done with it and only a mod plate for a turbo.
i love my turbo's sierra for driving its a thrill every time
but if you are towing like me to tow the turbo'd toy to the tracks then you need touque and lots of it,


now i have question in this reguard has any one put extractors on a big block chev in a gq??

who told you that crap? turbo's are great for towing, why do you think trucks use them, for the sound? my turbo patrol has towed my race car all round oz and doesn't suffer from any short fall of torque. an ls1 wouldn't tow any better that's for sure.