Hi Rusty,
No, I’m not trying to give Leon a brain hemorrhage
here. And I’m not disagreeing that the EWP can/does work if
properly configured. All I’m trying to do is to look at the problem
from a slightly different perspective by pointing out that the baseline objective
is to cool the metal, not heat the coolant. I don’t care how fast
the coolant flows as long as it adequately cools the metal at the current power
setting. What we’re trying to do is remove the excess heat
from the engine as a result of the combustion process. Lots of combustion
(high rpm/load) requires more heat transfer than low rps/load. So, to me,
the answer to your question (The real question is how much flow do we
need?) is the engine
within its max operating temps. This is why I installed “CHT”
probes on my engine, to monitor the metal temps in the vicinity of the plugs.
So, if I
understand it, you can get there with high flow, low dT, or low flow, high dT,
or somewhere in between as long as the metal doesn’t get too hot in the
process.
I may try the
EWP sometime in the future, but will use the EDWP for now as it is installed
and working as is. I’ll gladly leave the R&D on this one up to
you.
Mark S.
(Leon, take some
aspirin)
I haven't heard a single person disagree
with this.
Clearly, a single Davies Craig pump will
cool a turbo 13B, or a race engine, so hyper-flow isn't
"needed" for cooling. Perhaps in time this will
negatively affect the housings, but only time (lots of it) will
tell.
FWIW, running the stock system isn't a
guarantee that you'll never have these problems either, because we aren't
running the engine the way Mazda intended. Heck, for all we know,
Mazda had to move the liquid fast enough to keep plain water from boiling,
since they know that some people will put that in the engine. Remember
how they decided to use sump oil for the apex seals? Purely a concession
to marketing, and not in the engine's best interest.
EWP's aren't for everyone, at least until
the rest of the automaker get on board with it :-) They
solve installation problems for some folks, provide a proven backup
system, and have some other (apparently) debatable advantages. Still
a free country.
Rusty (Dave, can you prescribe something
for Leon's
headache)