Outer Limits 4x4 Board

Just outta curiousity, how big a tyre can you go without chopping the gaurd??
Was thinking of putting bigger tyres than my 33's on my 6" lifted rig, but I really couldn't be bothered chopping the gaurds. I'm on the tools for a living, and the last thing I want to do in my own time is get on the ...

If there are any non rounded edges, or it obstructs the drivers vision in any way, then no, it's not legal.

I enquired once at an engine shop about my old rb30 powered patrol, and the guy advised me to have my own cam reground, as they were a bit hard to come by for the rb30's. Don't know how true that is though considering how many modified Skylines and VL commodores are getting around.

pushrods would generally be noisy if they are bent, so maybe pull them out and have a look. Another way to adjust your tappets (although it can be a pain in the bum) is to pull the rocker cover off, loosen all the locknuts and start the engine. Adjust the tappets until the noise stops and then lock ...

pushrods would generally be noisy if they are bent, so maybe pull them out and have a look. Another way to adjust your tappets (although it can be a pain in the bum) is to pull the rocker cover off, loosen all the locknuts and start the engine. Adjust the tappets until the noise stops and then lock ...

Check points and condensor. Maybe overfuelling or running rich also. I'd put it on a 4 gas anylizer to check it properly. I've got a 2.5" system on mine also, and it runs sweet. Only differance is, I've got an electronic dizzy.

electronic igniton and extractors are excellent for LPG. Snorkel will do nothing for economy or performance and may cause running problems with the forced air induction and the diaphram in the gas convertor. It should however be able to be rectified by a gas expert.

Don't think it's a cracked head i did a pressure test on it, and idles fine, normally a cracked head would run like crap, might be onto something with the thermostat

It won't necassarily run like crap depending on where the head is cracked. TB42 cylinder heads have little welsh plugs in the head ...

GRINCH wrote:

Sexy Fingers wrote:Also, standard diff ratio's in a 4.2 are 3.9's, and in a 3 litre they are 4.11's. All this means is it'll go a bit harder off the mark, but you'll lose a bit of top end.

rb30 are 4.3

Doh!! I knew it was something like that

I've done a quick search around the forum, but couldn't find what I was looking for. I've got a gq with 6" lift and 33" tyres. As they are starting to wear a little low I was thinking of getting 35''s as I was told this is the largest I can fit without modifing the gaurds. From what I understand ...

Also, standard diff ratio's in a 4.2 are 3.9's, and in a 3 litre they are 4.11's. All this means is it'll go a bit harder off the mark, but you'll lose a bit of top end.

hdn177 wrote:im sure here in NSW its illegal to have a standard battery in where passengers are. only sealed are allowed

Lift the rear seat on any old VW beetle and I don't think you'll find too many sealed batteries. Probably explains why they keep catching fire and burning to the ground.

They are about $2 a welsh plug. In theory they are not hard to do, but in practice they are a pain in the ar$e. Use a punch to punch one end of the welsh plug in and then lever it out with a pair of pliers. Smear some Stag Jointing compound around the outer circumferance of the new welsh plug and ...

As a licenced mechanic, I hav'nt had to do a set of welsh plugs in over 15 years. The other day I dropped a rocker cover screw onto the ground, and when I got underneath to pick it up I noticed one of my welsh plugs leaking (Trust me to buy a car that needs constant attention). Anyways, I know you ...

If it comes with the wiring harness and computer, why not? Be aware you'll have to make a few modifications to the lpg system to get that working again.

Put a thermostat back into it to begin with. The tb42 motor is fitted with a dual stage thermostat, which if removed, will cause the engine to overheat.

Mate my GQ does it sometimes. Ive found it to be a lack of vacuum in the clutch vacuum booster. Mine does it when ive been on full throttle or close to it. The reason why it does not happen on down shift is you have maximum manifold vacuum when the throttle is shut. There is a one way valve in the ...

6K is cheap for a deisel. Just go on drive. com or one of those similar car sites to compare the prices of the cars there. On the other hand, with high fuel prices and the age of the car, gq's are now the sort of car that appeal to only a small group of people, and that is people that go off road ...

I've spoken to a gearbox rebuilder about this as a lot of smaller front wheel drive vehicles have had atf in their manual transmissions when I've drained them. Yet after refilling them with atf, they tend to crap themselves after a few thousand km's. The transmission rebuilder reckons that the atf ...

cuzza wrote:If its not the lifters what could the noise possibly be coming from?

Maybe worn camshaft lobes, maybe a slightly bent pushrod. Worst case scenario, it could possibly be the crankshaft bearings, and although I can't really describe the noise, it usually does'nt sound like tappet noise.

Engines either have adjustable tappets or hydraulic lifters...not both. As the td42 has tappets and you reckon the noise is coming from the bottom of the block, at a guess I would say (and I hate being the bearer of bad news) you have bottom end problems. If left unattended you may find one of the ...

I know nothing about those engines, but if it's a six cylinder the firing order will be 1,5,3,6,2,4. There are many reasons it could be running rough. Have you checked the igniton points and gap, the condenser, the timing, and have you got any disconected vacuum lines or air leaks around the ...

dirtyGQ wrote:does the brand of oil filter vary the pressure usually ?

Not normally, but I'd still pay a few extra dollars for a quality oil filter such as genuine, Ryco or Valvoline over the cheaper Taiwanese imports. I see it as a cheap insurance policy for your engine.

gqroo wrote:does length matter? :

no

anyone know what oil pressure should be in a tb45? during the past 2 days ive seen mine go from 25psi to 65psi. what should it be on? idle, reving etc...?
when the engine is warming up it sits on about 45psi and then after a few minutes it gradually drops.
just wondering if its normal or not?

It ...

Spark plugs come pre gapped these days, but 1.0mm is a good gap for an lpg system. Timing sounds about right too. Does it flat spot on petrol or gas? With the backfiring, it does sound like it may have an ignition problem. Start with checking the lead resistance (no more than 12K ohm on each lead ...

If you think thats fun, try fitting them to an EF Falcon with coil pack ignition . You could try fitting them with long nose pliers though, or start pulling things off.

TURBO GQ wrote:thanks for ur replys boys,

does it ever stop??
shes sucking me dry.

cheers and thanks

Ummm no. Mines already sucked me dry, and everytime I've fixed one thing, I find something else that needs attention.

If you've got access to a radiator pressure tester, pressure test your cooling system and see if the pressure goes down over a few minutes. Also if it's leaking coolant into the oil, 9 times out of 10 it'll be because of a cracked head (if it's a tb42 motor). With engine at operating temperature and ...

Well I finally got around to doing my exhaust yesterday. I got 2.5" system from the manifold back, more or less cause the original exhaust was stuffed, and I could'nt afford to replace the manifold just yet. I must say I was impressed. I've had heaps of cars over my driving career and had heaps of ...