One other item:
Methanol makes roughly 20% more horsepower than gasoline.
Richard L. Hensley, P.E.
Hensley Engine & Machine
----- Original Message -----
From: "Richard L. Hensley" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Saturday, March 17, 2007 4:13 PM
Subject: Re: [F500] 600cc Costs
Chris:
Some comments relative to the Alky
I've been running methanol for years. 1 oz of castor oil per gallon of
fuel, if there are no fuel tests, pure methanol if they are running tests.
After each race I empty the tank and run enough 40 to 1 gasoline, oil mix
to flush the fuel lines and the carbs or injectors. This also oils the
cylinders. Have never had a corrosion problem. The so called corrosion
from methanol is caused from the water absorbing characteristics of the
methanol plus the fact that when burned the methanol produces a lot of
water vapor. Clearing the cylinders with gas and oil solves this problem.
Some of the others I race with fill the tanks with methanol and block the
vent hole after the evenings events.
Methanol does attack rubber diaphragms however most modern synthetics will
last a season.
Besides most race engines receive at least a partial rebuilt once a
season.
Richard
----- Original Message -----
From: "Chris Reinhardt" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Saturday, March 17, 2007 3:15 PM
Subject: Re: [F500] 600cc Costs
I say you don't know what you're talking about....
The valve adjustments you're talking about are actually cam timing
adjustments, and they usually don't add power to the motor unless they
were off from the factory, they move the powerband. Sprints are all
about torque coming off the corner, so you need to get it dialed in.
"Rebuilds" is a very general term, it depends on how much is being
done to the engine. Every watch a micro race? They run about 14k rpm
the entire lap, they never lift. Alky isn't an option, you either run
it, or park it, because it's too much of an advantage. Ever seen the
inside of a alky motor? Alky is very corrosive, it eats everything, so
you have to rebuild those motors at least once a year if not more.
CR
[EMAIL PROTECTED] wrote:
Did some research on 600cc maintenance cost. 600cc midget racing here in
Pa/DE/NJ is big. Kaw, Yam, and Hon engines stock engines/clutch/cab'd or
FI,
open air intake and exhaust. Fuel is optional gas or alky.
1. Stock rebuilds range from $1200 to $1750 depending on how many new
parts
are needed.
2. Pipes around $460 w/muffler for 95 db track rules.
3. Appears as if older (?) Kaw motors are easy to find and less
expensive.
New motors are faster (better factory porting) harder to find find and
much
more costly.
4. Apparently dyno generated valve adjustments settings are a big tuning
component. Cost is approx $500 just to have this done with no dyno time!
After seeing these prices I quite looking for prices on clutch rebuilds.
I suspect a 600cc car will cost considerably more to build with a
new/used (?)
engine and cost more to race.
OK Chris R, what say you?
Louie Schultz
Philly Region
PS Noticed other interesting facts. Huge fields. Four car maker in PA
alone.
A complete 600cc midget with options is priced much lower then new F500
cars
ie big market. Also Linda's Speedway, somewhere around Harrisburg, runs a
$10K to win race for this class...yea baby!
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