Outer Limits 4x4 Board

90Mav wrote:I have a TD42 ute, which i braught thinking about fuel savings... its not that great.. esp with diesel at ~ $1.50L $100 to fill up, gets me around 450kms.. if i was doing it again, id probably get a tb42 on straight gas..
with a few mods, you can get effiency close to petrol, mostly higher compression.. ditch the 80l tank and get some big ones... it will be a lot cheaper than a deisel or whatever conversion.. remember the serviceing cost on diesel too. Twice as much oil, twice as often, 2 filters ect ect...

Yours must be running like a dog or you are driving it flat all the time, I get 700 around town in my GQ TD42, no turbo.

The worst fuel economy I have ever had out of it is 17/100km, towing a 17ft, 1300kg caravan from Armidale to Coff Harbour through Dorrigo, lotsa second gear hills made me use the extra fuel. the rest of the trip was 15/100 with the van on.

Froon, as GQ bear said fuel is expensive, 4WD's can use more. I would say yours needs a good tickle up. I have a mate with a TD42 Mav on gas & he gets 400km for 100lt of gas. He has put an electronic ignition system on it that made a hell of a difference. Also look at exhaust as mentioned.

If you want a deisel, dont convert it, sell it & buy one with a deisel aldready & turbo it. I saw a 92 GQ recently with 98,000ks on the clock for 9 & a half grand, a bit dear but you could not go wrong with that. I nearly bought it myself cos mine is about to clock 400,000.

Just my 20c.

It'd be a fair whack cheaper to do the conversion though wouldn't it?

I mean, my GQ has suspension lift, body lift, lockers, compressor for lockers, custom snorkle, custom bar work, chopped rear quarter etc.

Froon wrote:It'd be a fair whack cheaper to do the conversion though wouldn't it?

I mean, my GQ has suspension lift, body lift, lockers, compressor for lockers, custom snorkle, custom bar work, chopped rear quarter etc.

you would be better to find a turbo diesel and put all your shit on it or vice versa and then wreck out a vehicle...

Froon wrote:It'd be a fair whack cheaper to do the conversion though wouldn't it?

I mean, my GQ has suspension lift, body lift, lockers, compressor for lockers, custom snorkle, custom bar work, chopped rear quarter etc.

Ahh well, you didnt say all that. Maybe it would be, it all comes down to how much work you are willing to do I guess.

Tis in my sig line, didn't think I needed to.

Froon wrote:Its 200km per 60l, that equates to roughly 30ltr/100km... The understanding I've been given is that a TB42 will chew around 18ltr/100km under normal circumstances.

The engine is very out of tune... I've taken it to 3 seperate 'gas' specialists who get it running really well for a few days before it drops back to its old habbits. I have had it running below 20ltr/100km without altering my driving habbits after a tune up... frankly, after spending the amount of money I have on so called experts to repair the engine, I'm about ready to give up on it.

surely if you are willing to take on an engine swap you would be able to tune the engine.

All you need to do is take the dizzy out, take it to someone near you that can recurve it, have them set it so it has 12 degrees total mechanical advance all in by about 2800rpm, when you get it back, fit a crane XR3000 optical conversion and piss the points off. get an MSD blaster HVC coil, (thats the off raod version of the blaster 2/3)
when you put it back in, set it with 16degrees initial advance.
open the plug gaps up to 40 thou and fit some eagle leads.
(optional, get an MSD 6A and open the plug gaps to 50thou)

set the valve clearences to factory spec and make sure the exhaust system isn't partly blocked.

once you've done that get the engine hot and adjust the gas mixture screw untill it idles smoothly.
JOB DONE

and then ditch the petrol all together and stick with LPG.

Froon wrote:Tis in my sig line, didn't think I needed to.

Im not that perceptive at times

brad-chevlux wrote:

Froon wrote:Its 200km per 60l, that equates to roughly 30ltr/100km... The understanding I've been given is that a TB42 will chew around 18ltr/100km under normal circumstances.

The engine is very out of tune... I've taken it to 3 seperate 'gas' specialists who get it running really well for a few days before it drops back to its old habbits. I have had it running below 20ltr/100km without altering my driving habbits after a tune up... frankly, after spending the amount of money I have on so called experts to repair the engine, I'm about ready to give up on it.

surely if you are willing to take on an engine swap you would be able to tune the engine.

All you need to do is take the dizzy out, take it to someone near you that can recurve it, have them set it so it has 12 degrees total mechanical advance all in by about 2800rpm, when you get it back, fit a crane XR3000 optical conversion and piss the points off. get an MSD blaster HVC coil, (thats the off raod version of the blaster 2/3)
when you put it back in, set it with 16degrees initial advance.
open the plug gaps up to 40 thou and fit some eagle leads.
(optional, get an MSD 6A and open the plug gaps to 50thou)

set the valve clearences to factory spec and make sure the exhaust system isn't partly blocked.

once you've done that get the engine hot and adjust the gas mixture screw untill it idles smoothly.
JOB DONE

and then ditch the petrol all together and stick with LPG.

I agree with everything you said except the Eagle leads, I have had too many problems with these, Bosch or Magnacore are better. Magnacores are dear as shit but outlast anything else. Personal preferece I guess.

My mate bought an electroninc ignition that still uses the points as a trigger. Waste of time really as the idea if Electronic ignition is to remove these to make it more reliable. Had heaps of trouble with it because they hooke dit up wrong & it was burning points.