What makes some 4.6 V8s high compression?

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Originally Posted by Lotz-A-Landies

Ron

What I'm trying to do is make this vehicle and engine as simple as possible, so will be using a regular vapour system.

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Do you have a system?

I have the old vapour system put of my 4.6 and i want to get rid of it.

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Originally Posted by Lotz-A-Landies

So the question remains - is it worthwhile spending $1,000 to convert the 4.6 engine to HiComp if it is to run 95%+ on LPG with the CSR calculated in?

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Maybe all you need to carry is some octane booster for the sections of the trip where premium is unobtainable.

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Originally Posted by LOVEMYRANGIE

There is a guy here in Perth who aparently makes LPG jerry cans. I have just contacted my customer who told me about them only yesterday! He has the details somewhere and will call me when he finds them.
As soon as I know, I will post it here and PM you.

Andrew.

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I was talking to a bloke this week about this. He said one can use forklift cylinders.

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Originally Posted by up2nogood

Anyone know what engine number prefix would id a low or hi comp engine?

What compression ratio does the engine end up with using 3.9 heads and flatties?

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42D LC 4.0
44D HC 4.0
46D HC 4.6
48D LC 4.6
To VIN WA410481

Then
57D
58D
59D
60D

That's factory fitment. Then there are the replacement engines.....


9.35:1 is HC

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Originally Posted by p38arover

I was talking to a bloke this week about this. He said one can use forklift cylinders.

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Its not unheard of to turn a 9kg bbq cyl upside down to supply "emergency" fuel (18 Litres) . You would need a hose with POL one end & Acme female the other. Commercially available, ie legal, are limited to 1.5m as with all decant hoses.
I travelled the high plains quite some years ago with someone who had 2x45kg household cyls on a yota trayback and ran a hose down to the filler and thereby had 2x temporary tanks. Not legal though.
Tecnically a goods carrying vehicle ( open type) can carry 250 litres (in Vic) in addition to vehicle fuel.
Herendeth the lesson :angel:

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Originally Posted by DeeJay

Its not unheard of to turn a 9kg bbq cyl upside down to supply "emergency" fuel (18 Litres) . You would need a hose with POL one end & Acme female the other. Commercially available, ie legal, are limited to 1.5m as with all decant hoses.
I travelled the high plains quite some years ago with someone who had 2x45kg household cyls on a yota trayback and ran a hose down to the filler and thereby had 2x temporary tanks. Not legal though.
Tecnically a goods carrying vehicle ( open type) can carry 250 litres (in Vic) in addition to vehicle fuel.
Herendeth the lesson :angel:

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Seen a bloke here runing a F100 that way here years ago. Was no gas here then Only he had the big house hold Cyls:eek:. I looked real bad. But did work. They did not look to be upside down though.

i think the hi compression head (9.35:1) are also a different shape (at the top of the cylinder) and the valves and seats are also different therefore the earlier ones can handle unleaded and lpg without major changes. of course the later engines were already set up for unleaded.

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Originally Posted by LOVEMYRANGIE

There is a guy here in Perth who aparently makes LPG jerry cans. I have just contacted my customer who told me about them only yesterday! He has the details somewhere and will call me when he finds them.
As soon as I know, I will post it here and PM you.

Andrew.

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Andrew

The problem is not having LPG gerry cans or decanting bottles, it is having sufficient to travel the length which is about 2,000Km. With 200Lt LPG in tanks on-board I would potentially require another 300 Lt to do the journey. This will be picked up by the 150Lt petrol in a third tank and the people who do the fuel drop will currently only drop diesel and unleaded so I will need 150 litres of petrol (or in fact 200 litres as it comes in 44 gal drums) and it is this fuel that is the concern.

Ron's idea of the octane booster may be the answer.

Diana

would be something you'd pre-test?:angel:




I mean I trust Ron,,,


but 2000 kays is a serious commitment ;)

the octane booster works well. a simpson trip in 2002, we...well I used it. the only petrol i could get at Mt Dare was unleaded, so i took a few bottles of octane booster with me. no pinging and no problems, the ute went well and i only used 22l/100km on the sand

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Originally Posted by barney

the octane booster works well. a simpson trip in 2002, we...well I used it. the only petrol i could get at Mt Dare was unleaded, so i took a few bottles of octane booster with me. no pinging and no problems, the ute went well and i only used 22l/100km on the sand

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What was done with the engine that required octane booster??