20v with 16v Water Relocation Kit

[jondee86]

According to the description provided by SQ Engineering on this
page http://s-86.com/s-newcoolingguide.html the real difference
is the temperature of the water passing inside the head on the inlet side.



16V system has the cool water from the radiator entering the block via
the pump and exiting the head at the front.

20V (OEM) system has the cool water from the radiator entering the rear
of the head, passing along the inlet side, then via the pump into the block
and out to the radiator from the rear of the head.

If you are running a simple in-line thermostat layout, the volume of water
circulating should be sufficient to maintain a low temperature gradient
across the engine (inlet to outlet). Therefore, I would not expect to see
any significant difference in performance between the OEM system and
the 16V RWD conversion.

I do have some reservations about the wisdom of running an in-line
thermostat without any provision for water by-pass during warmup.
The simple in-line thermostat relies on a single 3mm hole to maintain
circulation until the thermostst opens. The factory system uses a bypass
arrangement to maintain flow through the engine during warmup. This
will be more effective in preventing hot spots, and promoting even
temperature rise through the head and block.

I have not seen anything to suggest that the lack of a factory style
bypass is a problem, that's just my personal preference

Cheers... jondee86