[DeTomaso] Heater Hoses & Pipes

[JDeRyke at aol.com]

In a message dated 8/22/08 11:46:17 PM, MyCars at Comcast.net writes:

> On a side note, I was also thinking of insulating these pipes in an attempt 
> to help keep the cabin cooler. Do you think that would help?
> 
Be very sure you have a pair of bronze pipe ball-valves plumbed into the 
hoses going to and from those pipes; the stock Pantera dashboard controls cannot 
be adjusted to fully shut off the water flow thru the heater and also fully 
open for good heating & defrosting. The mismatch in leverages usually allows a 
trickle of hot water thru the heater while the A/C is on, making the A/C work 
harder, so we add manual shut-off valves. 
In summer when one doesn't need heat, the manual valves also protect against 
a hose blowing off or rupturing under your dash, scalding your leg and 
instantly fogging the windshield, usually at high revs. This has caused crashes. The 
valves can be placed such that an owner can reach them without opening the 
decklid.   With manual shut-off valves in the system, the heater pipes have no 
water flow thru them unless the heater is in use, so insulating them is a bit of 
trouble and not very useful. Good luck- J Deryke


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