In reply to a message from Norman LUTZ sent Tue 19 Oct 2010:
it seems as tho the race engine info here are just standard
engine mods for the last 60yrs,
cooling system mods,like increasing flow in the poor
areas,back of block and heads,bleed piping,restrictors in
strategic areas,slowing pump speeds,ETC.,
add and raise the expansion tank hite, like ford did in 1958
on big engines.
a couple of mods I do not see mentioned,
running a hi-temp coolant like Evans boiling point 375F
without pressuizing system,
big value is it dont cause localized HOT spots.
no corrosion at all,or cooling system build up, self lubeing
and I think youall missin the boat without using THERMAL
BARRIER COATINGS,in certain areas.
lets face facts about our beloved V12s, there head cooling
is akin to a steam boiler, especially the long exhaust port
where heat transfer into coolant is high.
thermal coating port and chamber area WILL reduce a lot of
heat related probs. coated chamber reduces SEAT probs.
some yrs back I made steel tubes that I inserted into the
exhaust ports,all way in till the bowl area,blended
everything and coated the bowl, a small air clearence behind
the tube gave a BIG insulation to aluminum oversized port,
really works great on TURBO engines that have a lot of
residual heat in exh. flow.
and con rod mods using Chevy stuff goes back to the 50s or
before also, Hey! it worked on chevs why not any engine(i
recently did a 4cyl. ford) a longer rod with offset crank
and lighter pis pins.
boy did you just trigger the old brain, my very first crank
shaft was a 1948 mercury V8 crank with 1/8’’ offset journals,
had to look this tidbit up(anyone remember BRIAN FUERSTENAU
of Group 44 racing team),
I talked to him in 1989, and there Jag V12s where using
small journal chev rods, and a reduced main diameter by
using a machined steel insert , screwed to cap and block
web, and a smaller bearing from a pontiac mod, for the same
reason, large dia created lube probs from frictional speeds.
anyway my premise here is, modifying factory production
engines, seems to fall into just experiance any many yrs of
and I have to give credit to just good old fashioned
AMERICAN HOTRODDING, and creative free thinking.–
daytona fl. / Austin TX., United States
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