10-27-2015, 06:19 PM
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CC Member
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Join Date: Jul 2011
Location: Sydney,
NSW
Cobra Make, Engine: Puckett 250 GTO - LS1
Posts: 567
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Not Ranked
Second function of heater hoses?
I am about to connect hoses from the LS1 to the heater (Vintage Air). I was familiar with the system which simply placed a tap in the inflow hose and opened and closed depending on how much heat was required in the cabin. That is the style of tap which came with the Vintage Air kit.
The tap from the VZ Ute donor car creates a system whereby water is constantly flowing through the hoses and the heater is something of an additional take-off loop. I was lost as to why this level of complexity.
Feedback from other forums suggest the heater hoses also carry water used to cool specific areas of the engine, e.g. cylinder heads, where the water cavity flow doesn't effectively cool. It doesn't matter whether the water has previously passed through a cabin heater or not.
Because the heater ports are part of the pump on an LS1 I'm trying to find out why the LS1s have this constant flow arrange and if it would be detrimental to convert it to the simpler inflow restriction method? Thanks.
Here are images of the VZ heater tap and water flow:
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