Heater hoses

[IWC Bus]

I removed the 2 back heaters, heater hoses and the wire to the heater booster.
I was thinking of putting them back in but with Ped tubing or copper tubing.
I also was thinking about running them underneath the bus inside a pvc pipe for extra protection.
I need some feed back from the forum because I am confused of what to do.
Its getting nippy in New York and I can not come up with anything else to clear these 2 humongous windshields.
Also can anyone with a Bluebird Rear engine bus tell me what is the item next to the radiator with access only from underneath the bus. That looks like a smaller radiator. Behind the louvers on the driver's side.

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[miscrms]

I’d be careful about using pex, the temperature is pretty high and I’d bet there’s a lot more flow. The pump on the diesel auxiliary heaters is over 20 gallons per minute as I recall, so that gives you some idea. Someone on here recently was posting about having pex burst in a recirculating system running about 160F, and coolant could definitely be hotter than that.

As to the mystery component, I think the transmission cooler is roughly in that location on mine. Could be an oil cooler also?

Rob


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[IWC Bus]

Originally Posted by miscrms

I’d be careful about using pex, the temperature is pretty high and I’d bet there’s a lot more flow. The pump on the diesel auxiliary heaters is over 20 gallons per minute as I recall, so that gives you some idea. Someone on here recently was posting about having pex burst in a recirculating system running about 160F, and coolant could definitely be hotter than that.

As to the mystery component, I think the transmission cooler is roughly in that location on mine. Could be an oil cooler also?

Rob


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I thought I read that about the pex however in NYC with everything going to online orders.
It is hard to fine items especially if you need to work in and match the item up by sight. I will probably have to travel to New Jersey to fine the OEM hose and that amount of length.

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[Rusty]

I wouldn't get creative with heater hoses- remember the hose contains the cooling for your very expensive engine that hates to overheat.

Did you save the old hose or was it deteriorated? I believe I've heard 1" hose mentioned as the standard, but verify.

[IWC Bus]

Originally Posted by Rusty

I wouldn't get creative with heater hoses- remember the hose contains the cooling for your very expensive engine that hates to overheat.

Did you save the old hose or was it deteriorated? I believe I've heard 1" hose mentioned as the standard, but verify.

Attachment 16677

Oh trust me, I am not trying to overheat that Caterpillar 3126.

The old hoses were finish, they had lasted Way beyond their lifespan. Deterioration was a nice word for them but I saved a piece to match up.

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