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AU into NF mistery coolant pipes 

 

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 Post subject: AU into NF mistery coolant pipes
Posted: Thu Aug 06, 2009 10:58 am 
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Ride: Fairlane Concorde 4.0

Location: wagga
NSW, Australia

Just looking over the AU engine I'm preparing for the Fairlane and noticed 2 coolant hoses connected under the BBM. They travel up between the inlet manifold/head, over the rocker cover and to the exhaust side of the engine. The hose is 3/8" diameter. I thought maybe LPG converter coolant lines but look to thin. My fairlane is connected like item 6 in the attached diagram. You can see the AU lines connect to the small steel bypass pipes under the BBM.

 

 

Attachments:
2 hoses connection.jpg
2 hoses connection.jpg [ 52.32 KiB | Viewed 20 times ]
2 hoses.jpg
2 hoses.jpg [ 47.57 KiB | Viewed 26 times ]
Heated water.jpg
Heated water.jpg [ 21.87 KiB | Viewed 26 times ]

 

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NF Fairlane: Non Factory Dual Fuel - New coolant tank, New fuel injectors, New fuel pump, New earth cable, ECU capacitors replaced, New O2 sensor, leads and plugs, New Radiator/Condensor cleaned. 483,000kms. AU I6 Powered. Struts, Shockies, Tie rods and ball joints replaced.

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 Post subject: Re: AU into NF mistery coolant pipes
Posted: Thu Aug 06, 2009 11:20 am 
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I would guess LPG converter too, not much else it can be.
Only other thing I can think of that needs coolant on the exhaust side would be a turbocharger with a watercooled core.
I think LPG converter is most likely, even if the lines are undersized.

 

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 Post subject: Re: AU into NF mistery coolant pipes
Posted: Thu Aug 06, 2009 2:08 pm 
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Ride: Fairlane Concorde 4.0

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Thanks Steady. That was my guess. I think my original converter lines are 5/8 and not 3/8 like the ones in the picture. What do you think about running coolant from the 3/8" lines to the converter? How did the factory gas AU do it? Were these steel bypass lines fitted with factory gas in mind?

 

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NF Fairlane: Non Factory Dual Fuel - New coolant tank, New fuel injectors, New fuel pump, New earth cable, ECU capacitors replaced, New O2 sensor, leads and plugs, New Radiator/Condensor cleaned. 483,000kms. AU I6 Powered. Struts, Shockies, Tie rods and ball joints replaced.

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 Post subject: Re: AU into NF mistery coolant pipes
Posted: Thu Aug 06, 2009 3:41 pm 
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Ride: BA on gas. EL on gas. XF on gas.

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SA, Australia

Yep LPG, my EL was like that when I got it.
I put a standard heater bypass hose back on.
Cut heater hose marked 2 in your diagram at the lowest point (bottom of the u) and fit a T piece.
The other hose goes to the bottom of the thermostat housing.
Remove the coolant temp sensor and fit a screw in T piece as per pic.

 

 

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Therm Gas.JPG
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 Post subject: Re: AU into NF mistery coolant pipes
Posted: Thu Aug 06, 2009 10:53 pm 
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Ride: Fairlane Concorde 4.0

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NSW, Australia

Cheers Matt. The way you describe your current EL setup is the similar to my NF donk. I think I'll setup the AU the way you desribe. My NF I6 had a lot of coolant leaks in that U hose/ T piece area. I'll just bite the bullet and replace the U shaped hose and fit a new t-piece. Not sure where my second hose is. I'll have to investigate further.

Also I'm using the AU thermostat housing (no ect sensor.Using the AU sensor rear of head). I could just drill and tap the hole and fit the other coolant line into the side of the AU thermostat housing. I just want a setup that is reliable and doesn't give me lots of trouble.

 

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NF Fairlane: Non Factory Dual Fuel - New coolant tank, New fuel injectors, New fuel pump, New earth cable, ECU capacitors replaced, New O2 sensor, leads and plugs, New Radiator/Condensor cleaned. 483,000kms. AU I6 Powered. Struts, Shockies, Tie rods and ball joints replaced.

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 Post subject: Re: AU into NF mistery coolant pipes
Posted: Fri Aug 07, 2009 1:08 am 
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Ride: BA on gas. EL on gas. XF on gas.

Location: Greenacres/Adelaide
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Use a quality T piece and hose clamps and you should be right.
The EL gas system is about to be changed, just bought a LPG Injection under bonnet kit for it.....

 

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