Outer Limits 4x4 Board

About the same but but the right foot is way more fun!!!

definatly boost retard or lock it at 15deg or less untill you put it on a dyno. 8psi shouldn't give you greaf if your ignition is in good shape. If using gas only get some platnium or iridium cold plugs, helps with detonation.

When I changed my TB42 GQ from petrol to straight gas I got the same power but still only used 95 lts of gas to 400km's witch was the same as fuel but now half the price to fill. That was using Gas research system, found it faultless and easy to tune.

I constantly hear from people and mechanical shops saying that LPG requires less air than fuel so you dont have to runt he same CFM throttle body as fuel. Stoich for petrol is 14.7 and 15.8 for LPG and even 17.1 for a 50/50 mix of LPG and Butane, dont know the mix rate but definatly got some Butane ...

Id be checking convertor ice up for sure. After it stops feel the convertor, it should be hot. If its icing up it dosnt vaporise the gas and dumps raw liquid down its guts and floods f##k out of it.

You probly need to do a hardness test on the head as they get soft with overheating and check how staight it is.

Northside cylinder head specialist in Geebung did a great job on my TB42 head. Price was the cheapest around as well.

Yeh somthing a bit different this thing. Wouldnt recommened the conversion tho as it fills the engine bay completly plus there is no parts/after market stuff for this engine.

Are those roller rockers higher ratio than stock and would they fit a TB42(turbo)

I ve started a build/resurrection thread of this truck in the members vehicals section. If there is any info on the engine management or auto, would like to know more about the history of this thing. And some power figures this truck has made too, so i ve got somthing to beat.

Just wonding if anyone has had any experiance using J&S Safe guard as a boost retard/knock control device on a turbo application?

Does anyone know where the build up thread is? the one from PROMOTIVE web site doesnt work any more.

SCANAS wrote:Post up a build thread Turbmav! A lot fo time and effort has gone into that car. I am sure you can sort out any problems it may have. Post some current pics when you start the build.

Yeh will do a progress report as I have to get it RWC on it before I crack in to anything to wild.

I think the last time I heard of this it was still RWD as it still used the infiniti gearbox... is it 4WD yet? It was always 4wd, Infiniti auto shares a lot of components with the Patrol auto. So with some swapping around the Patrol TX12A transfer bolts up. I'm not sure when all the reliability ...

Yeh more fault finding/ debugging. Its a project for me, the base is there ready to go just needs refining. From just a quick look it has no boost retard for timing so i can only suspect timing is been pulled out by the ECU via knock senser. Plus at 10.2 - 1 CR it wouldnt be able to handle much ...

Just put down a deposit on this GQ twin turbo infinity engine converted light blue lwb. Does anyone know the story with this car as there has been a heap of owners since the build up was do by PROMOTIVE and/or when it was in the 4WD action mag? There has been a heap of money and engineering spent on ...

The easy way to do it is get the right compressor size (TB42 is gt30ish) with a small turbine housing about AR.69 and a big 50mm external waste gate to control boost.

Mate check that cam duration at 50"it's all wrong on a turbo. Has less duration on the exhaust than inlet, thats crap, plus not any bigger than standard.

185kw? that must be rear wheel right?

X2 on the T28. thats diesel snot. Have you got much of a buget or KW @ the back wheels figure goal?

Holy shit bags! Thats more than double what iv got, and it lifts the left front. That thing would be scary on the road.

Just did a power run the Dyno to see what it had, developed a bloody miss a 4000rpm which hurt it. Bloke was saying it needs to be even richer than 12.8 a/r, thinks it's running lean. I thought that was rich? Closed up the gap to .7mm seems to have fixed the miss not sure as just tested on the road ...

Have you got a factory locker? Can be from a cracked vacume hose which happened to me, same whisel all rpm only when hot.

I would try it but I busted the center and have a LSD in it at the moment. Would like to go locked again but dont want the expense if its not going to work. The way I thought would happen is it would lock on vacume(no boost) that would work but when under boost with positive pressure on the diafram ...

Just woundering if I should repair my factory diff lock which uses vacume to operate, will it stay locked on boost or will it disengage? I think it has a vacume can and one way valve but still unsure if will stay locked.

No worries, should take it back to them and show then how it should be done.

Yeh mate if you get a new barb that fits snug or just one with no crap on it, can do it this weekend. Ive got all the gear on my truck to do it just PM me with ya phone number to make a time.

I've done two sumps now, no problems. As soon as it heats up the oil around hole does smoke a little (about 1 min) but doesn't catch a lite as there is not enough oxegen in the sump to get ignition. Mine was on a petrol engine shouldn't be any different and the barb isn't under pressure so filling a ...

Just braze it with silver solder with the sump empty, will need flux tho if its a brass barb.

Here's my super expensive $7 knock detector I made off the internet using a personal hearing aid with extended microphone attached to aligator clip. It works supprisingly well, can here valve train operation and annoyingly ignition pulses. Yet to hear a ping or knock bugger it, tried advancing the ...