[s-cars] An interesting FMIC "fact" (?)

[mlp qwest]

~-----Original Message-----
~From: s-car On Behalf Of Lewis, Gary M
~
~Scott,
~To my knowledge I am running the most advanced KKK K26 in the world....

snips

~(well, Hap does make fun of it, but, He's Hap, He can.  MLP could,
~but he doesn't).  Bigger maybe, but not better.

Why?  I've been running a variant of the turbo for some time now Gary.

~In terms of currently published data, the stock IC efficiency
~is easily reverse-engineered:

~1. ..... and the IC I have, which is more efficient than the one Amoroso
used.

Sorry Gary, that's one call I doubt.  I've seen/BTDT with the Spearco cores,
long before Spearco was acquired by Turbonetics.  While it has been sometime
since we tried the Spearco core, unless Spearco has drastically changed its
supplier &/or type of core construction IMO, I would doubt the Spearco core
would be nearly as efficient as the that core I think you are referring to
as "Amoroso's."  OTOH, since the damn thing is 24" long, its "efficiency"
superiority over the last 8" or more inches is probably irrelevant.  By
"efficiency" I intend to say heat transfer abilities.  It's entirely
possible however that the Garrett cores, length for length, may be more
resistant to flow, hence greater pressure loss, than the Spearco version.
For that however, one would need some pressure sensors and reading before
and after the IC.

~Contrast that with a properly sized FMIC.
~Pressure drop is less than 1/2 psi.
~Efficiency is over .8 (80%!!!!) at 20 mph.
~So an RS2 turbo at say 25 psi (1 psi over requested of 24 psi) is
~at 72% efficiency, exit temps are 309F.  (309F-70F)* (1-.8) + 70F = 132.8F.
~It is almost HALF as cool as stock.

Gary, if memory serves me correctly, with Hap's &/or the "Amoroso" 24" long
x 10" tall FMIC, exit temps under the above scenario would most likely be
within 20°F of your postulated ambient, or @ 90°F +/- 10° under highway
driving conditions.  Maybe Hap can chime in with what he's seen on his
Davtron, but that's about what I recall when the Green beast that never
moves, was well, moving.  Its been a long time ago, so my memory may not be
what it once was.

Last, while inconclusive in the poor attempts made to get some idea of
pressure loss across the "hapersized" side to side FMIC (gauges with
insufficient resolution &/or accuracy to provide "reliable" numbers), I will
say my best guesstimate of the readings we tried to take, is that we were
seeing something less than a 3psi, and probably less than 2psi pressure
differential at 25+ psi of boost across the IC core,

HTH
Mike "now thinking about working on a thorium crystal cooled FMIC connected
in parallel with Hap's mother's rear jump seat RearMIC just so's Scotty will
have something to tell Cap't Kirk about.