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Hi all,

I'm after some opinions on which water outlets to use for my LPG converter. I've recently put a 202 from a vc commodore in my land rover, replacing the original LR 6 cyl. Initially it ran quite well on gas but after trying to bleed the cooling system properly i noticed the converter had frozen and the feed pipes and bottom hose were cold, so i cleared and flushed everything, replaced the water pump and thermostat and bled again.

It wouldn't run on gas for the second bleed so i did it on petrol. The top and bottom radiator hoses got to temperature and the thermo fan came on when it should but the hoses to the converter stayed cold. So one of my theories is that I've used the wrong outlets from the engine to get the right flow to the converter. As per the attached pic I've used the outlet from the drivers side of the thermostat housing and the small one off the top of the water pump; what have you guys used in the past? or shouldn't it matter and there are other issues at play?

Any suggestions would be greatly appreciated.

M

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Comments

G'day mate!
Do you actually have water flow in those hoses? Have you taken the hoses off while the engine is running to check flow. Is the connection on the water pump drilled out like you often have to do when fitting a new pump? Have you tried swapping the hoses over so that the water pump is pushing water into the bottom of the convertor and pushing any air locks out the top and into the thermostat housing?
Convertors are tricky to bleed if they're mounted higher than the radiator, but it shouldn't be too hard to suss out.
Good luck, Dave

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Drilled out? I'm new to old holden engines so don't know these tricks, it never occurred to me to check if the new pump lines were clear!

Good point on checking the flow, i tend to forget the basics when stressed - I'll check tomorrow. The converter is lower than the radiator top tank and i initially filled the system from the in hose to the converter and had about 20cm of hose out the top of the radiator in attempt to avoid air locks but that doesn't mean it hasn't happened :)

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i have my converter hooked into the piping from the cast iron lower thermostat housing on my daily driven 202 powered hiace van.

never froze up on me.

one car i had on lpg i could only mount the converter higher than water level, if you didnt bleed it from a dry fill it wouold get an air lock that no amount of time seemed to cure.

with this i used to remove the highest hose to bleed it, once that was bled never a drama.

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