putting gas on my vt

[poweredbycng]

Originally Posted by Holdens Rule

And we all know taxis are driven carefully and never thrashed now don't we, god have I lost count of how many stories taxi drivers have told me about things they do in their cabs. Most mechs will tell you that the V6 is a strong motor but then if you do want to constantly drive it hard then you tell me how many stock motors will take it.

That's it. Ever seen cabbies feather the throttle in the city whilst tailgating? Constantly riding the brake for no reason? Handbrake starts and kickdowns to cut other motorists off?

The list goes on...

Regards,
Dave

[fitz_vt]

Originally Posted by blownba

Please tell me you are not serious!!!!
That is a VERY ignorant statement.
How the hell does LPG 'crack' heads????
That would have to be the dumbest thing I have ever heard.
Been fitting gas to Ecotecs since they came out. never had to pull heads off one of them due to the LPG. In fact I have never had to pull heads off a V6 commo engine for any cracks or headgasket EVER!!!!!
I have quite a few customers that have traveled in excess of 300,000kms on gas and still going strong.
The V6 is one hell of a tough motor. it takes a hell of alot more abuse than what LPG can throw at it.
You think if it 'cracked' heads in that small amount of time that holden would factory fit LPG????
Come on mate. Get a clue and stop posting useless dribble like that.

AHM..... my mate works for holden and has seen about 10 holden vt's on gas that needed replacement heads because they put them on lpg, my mates all have vt's and two of them are ****ed because of a cracked head after they purchased a LPG CONVERSION.....

[poweredbycng]

Originally Posted by fitz_vt

AHM..... my mate works for holden and has seen about 10 holden vt's on gas that needed replacement heads because they put them on lpg, my mates all have vt's and two of them are ****ed because of a cracked head after they purchased a LPG CONVERSION.....

VTs are 10 years old now. You cannot solely blame LPG as the casue of head failure. I'm sure there are tons of other 10 year old cars out there that run on petrol only and have required the same treatment.

Regards,
Dave

[Holdens Rule]

Yeah it does dry the valves and can cause damage to the heads everyone knows that but that is also why you are told to run it on petrol once a week or so to lubricate to top end. If people choose not to do that and to ignore their engines after converting them then thats their own fault. I don't know anyone that has looked after their engine after a gas conversion that has had problems with their heads and neither does my mate that converts these things for a living. Some cars might damage heads and I can't say for sure it doesn't cause problems but everyone that says it kills your engine is over stating things, jesus I can think of other things that people do to their cars that kill motors even more. Who hasn't redlined their car? Tell me thats good for your motor. If drying valve stems and stuff worries you then put upper cylinder lube on it.

The thing that I find really annoying is that if some guys don't agree with something on this forum they like to absolute bag it. If someone wants to convert to gas then it's their own choice, give them advice and help after all that's what this site is intended for but what is the point of some of these stupid over the top comments?

[fitz_vt]

Originally Posted by poweredbycng

VTs are 10 years old now. You cannot solely blame LPG as the casue of head failure. I'm sure there are tons of other 10 year old cars out there that run on petrol only and have required the same treatment.

Regards,
Dave

yes but it seems that conveiently after they were put on LPG the head blew

[poweredbycng]

Originally Posted by fitz_vt

yes but it seems that conveiently after they were put on LPG the head blew

Still doesn't mean a thing, especially if the car has some mileage under it's belt.

Above all, you don't know the histories of the cars. There must be thousands of LPG Commodores with Ecotec/Alloytec engines in Australia. If head damage was a major issue, would you think that there would be heaps of posts on discussion forums talking about it?

Remember that overheating is a major source of head damage too. LPG burns at higher temperatures than petrol, so the engine's cooling system is vital. We recently had a water pump failure on our VZ and we were told that such issues are a regular problem.

Regards,
Dave

[fitz_vt]

Originally Posted by poweredbycng

Still doesn't mean a thing, especially if the car has some mileage under it's belt.

Above all, you don't know the histories of the cars. There must be thousands of LPG Commodores with Ecotec/Alloytec engines in Australia. If head damage was a major issue, would you think that there would be heaps of posts on discussion forums talking about it?

Remember that overheating is a major source of head damage too. LPG burns at higher temperatures than petrol, so the engine's cooling system is vital. We recently had a water pump failure on our VZ and we were told that such issues are a regular problem.

Regards,
Dave

Yeah true dave i am not saying that its just from the lpg, that the heads blew on those cars (my mates are complete tossers and dont take care of them , but its a point that many people dont treat thier LPG ECOTECs well and it becomes a major problem thats why a few people here have said that its not worth putting them on gas because it may cause these faults now you cant turn around and say that LPG hsa never cracked a engine head and you know that lpg has the potential to do so..... you know that it burns at higher temperatures so..... LPG CAUSES PROBLEMS DOESNT IT DAVE........ not on all cars but on some ........ as proven many times for example, i know someone i used to talk to at the pub had a VR on lpg, they ran it on petrol to start and then swapped to gas, he had problems like his car wouldnt start, started to make funny noises, it turned out the LPG had ceised up his engine, because it dried it out. now that wouldnt of happened if he had kept it running solely on petrol would it!?!?!?!?!?!?

i am guessing not

[fitz_vt]

Originally Posted by Holdens Rule

Yeah it does dry the valves and can cause damage to the heads everyone knows that but that is also why you are told to run it on petrol once a week or so to lubricate to top end. If people choose not to do that and to ignore their engines after converting them then thats their own fault. I don't know anyone that has looked after their engine after a gas conversion that has had problems with their heads and neither does my mate that converts these things for a living. Some cars might damage heads and I can't say for sure it doesn't cause problems but everyone that says it kills your engine is over stating things, jesus I can think of other things that people do to their cars that kill motors even more. Who hasn't redlined their car? Tell me thats good for your motor. If drying valve stems and stuff worries you then put upper cylinder lube on it.

The thing that I find really annoying is that if some guys don't agree with something on this forum they like to absolute bag it. If someone wants to convert to gas then it's their own choice, give them advice and help after all that's what this site is intended for but what is the point of some of these stupid over the top comments?

like you have stated its not just lpg that can have the potential to kill an engine, definately red lining your car will make it have problems, i mean its a very touchy subject especially for ecotecs, so after out little arguements we can see a better resolvement after it, like there a few people that disagree and say no its better left on petrol then lpg others rave about it but everyone is entitled to thier own opinion.

[HARVZ-6]

something SOME people should read into is solely lpg fueled vehicles...

youll find they actualy perform better than their petrol comparisons being a higher octane fuel

if you find a vehicle that is tuned perfectly to gas, you shouldnt have any issues unless in extreme cases, yes lpg drys motors out but treated properly the motor should last anyone the span of the car itself

[HARVZ-6]

something SOME people should read into is solely lpg fueled vehicles...

youll find they actualy perform better than their petrol comparisons being a higher octane fuel

if you find a vehicle that is tuned perfectly to gas, you shouldnt have any issues unless in extreme cases, yes lpg drys motors out but treated properly the motor should last anyone the span of the car itself

[commsirac]

Originally Posted by fitz_vt

AHM..... my mate works for holden and has seen about 10 holden vt's on gas that needed replacement heads because they put them on lpg, my mates all have vt's and two of them are ****ed because of a cracked head after they purchased a LPG CONVERSION.....

sounds like you only mix in the "bermuda triangle" of head failures. my mate..etc......how many people for goodness sake are still taking VTs to the dealer for problems?, nevermind one dealer servicing 10 vts on lpg, really it all sounds a bit ficticious. indeed it appears to be coming from the same line of bs as this post: http://forums.justcommodores.com.au/937199-post14.html

True, anything can happen with a bad conversion if the mixtures are leaned out, but I dont know of anything intrinsic about lpg that can cause a head to crack.....other than a motor that has been severely overheated a few times can be stressed and consequently cracks.

Running the car on petrol once a week to stop the top end drying out(where does it say that?), would of thought any lubricant would wear out with inside a few minutes? Having run lpg dedicated on older holdens with no problems for 200 000km+ without any flash lube one might think the problems are overstated.
Possibly the running on petrol was more to keep the injectors alive as well as putting fresh fuel through the tank, or on carby cars to stop gaskets drying out.

[poweredbycng]

Originally Posted by fitz_vt

LPG CAUSES PROBLEMS DOESNT IT DAVE........

As stated by others, it really depends on the owner. If you don't give a toss about routine maintenance and servicing, of course your engine will fail. I know too many people who leave servicing too late and quite often, the small problems will have already developed into larger ones. Let's face it. You don't see too many spotless VTs around these days.

Regards,
Dave