cooling system

[lyonsy]

on my speedway car we run a rear radiator so i have a custom installation.
now taking comments from other sections people etc and a down fall of no1 on a 6 is it is the coldest cyl while 6 is hottest.
now on a 250 if you made a plate up over the water pump which strengthens the block a bit.
then install all the welsh plugs in the block drilled say 1/2in hool in all 6 along the left side of the block welded a 1/2in pipe out that connects the 3 rear together and the 3 front together but in seperte pipes to keep feed and pressure constant and have join at 1 pipe with an electric water pump.
to my way of thinking this whould feed every cyl water with in 5deg of each other.
whats your oppion
or whould i be better off reversing the flow of the system o have it draw through the head and out the block.

 

[rbohm]

8) actually i think you can simplify this a bit. use the core plug openings to your advantage by tapping them for pipe thread and install a short peace of pipe to which you can connect a manifold to run the coolant through. you dont want to limit flow from the pump to the block, you want to limit flow from the block to the radiator. for a race engine you can use a restrictor disc instead of a thermostat. just make a plate with a hole in it the size of a stock thermostat opening, and work from there. if the engine runs too cold, use a smaller restrictor, too hot a larger restrictor. as i recall the opening is like 1" to 1 1/2". you might have to use an opening as small as 5/8" depending on how efficient your cooling systme is overall. by the way several restrictor plates are needed, and have an 1/8" difference in size between the restrictor openings.

 

[lyonsy]

yep been running a restrictor type for a while now has an added benifit as well make the water pump work harder and force a bit more air out of the block.
thanks for the pipe idear.