In a message dated 7/3/2006 5:48:48 A.M. Mountain Daylight Time,
Without a water pump you are asking for detonation from hot spots and
localized over heating., steam pockets and a whole bunch of other nasty
things. If you refuse to run a real water pump at least precharge the
cooling system to 20 psi with air so you have some hope of getting down
the track for more than a mile at a time. I can pee as hard as most of
the electric water pumps and they do little to pressurize the engine.
Glad to hear you can still pee like a race horse! I think you got me beat!!!
A pee-off at Bonneville??? LOL.
Actually I was referring to a water pump in the tank/radiator to circulate
water in the tank only. I have a similar setup to Sparky's except I only have a
single pass aluminum racing radiator in the water tank. My tank holds about
25 gallons of water. I run 50/50 anti-freeze in the engine/radiator to
protect the aluminum and better cooling than water.
I am running a belt driven water pump on the engine. It is the "standard
issue" Nascar setup which pulls water from the center of the side of the block
instead of the front of it. It also pulls water from two small water lines
coming from the side of the heads between the center exhaust ports. The SB2.2
heads also have three holes drilled through the heads between all the
just above the gasket surface. This circulates water to cool the thin area
to keep head gaskets intact by preventing distortion at this hot spot. "Cool"
trick! The water pump is "pullied down" to run about 1/4 engine RPM. Nascar
engines run 9800 rpm all day long with this setup and don't cavitate.
I'm running a Mallory Super Mag III so I don't need an alternator but I'm
now thinking it takes more HP to run a mag compared to electronic ignition.
wasting HP. I don't carry a battery in the car for starting but have a
remote battery "plug in" setup for cranking it over. I didn't want the fire
of high amperage on board "just in case" of a mishap.
Gee Sparky, your rat is "only" cranking out 700HP? ( at Bonneville) My
little normally aspirated 358 incher dynoed at 775HP, (near sea level in
Charlotte). I figure I'll loose about 15% of my HP at Bonneville's density
How sad! I need 18-1 pistons! LOL