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John Thornton's #902 Race Car Details
We spent a couple of days with John Thornton's 912 race car, #902. The
last time the car was raced, it did not run well because of fuel
starvation so John wanted to go through the carburetors.
On Nov 29, we jacked up the car and removed the wheels, removed
the carbs and took one of them apart to soak in carburetor cleaner.
Jan 25, John installed and tested a new fuel pump, finished the
carburetor installation and got the car running again. Final
carburetor setup will be done one evening this week in time for racing
school next week-end. This session will also test the car at speed
before the first race in March.
March 15, we installed the passenger seat, bleed the brakes and made
one more pass at setting the mixture controls on the carburetor.
Fuel Flow
The race car has an electric fuel pump on its own switch. One of the
possible problems which could cause fuel starvation is the capacity of
the pump.
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A 5 gallon fuel container was dumped into the tank
then pumped back out while checking the time.
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Electrical fuel pump mounted behind steering rack.
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The new fuel pump has a filter attached to the
inlet to protect the pump mechanism from particulate matter.
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Carburetors
Another possible reason for fuel starvation is contamination in the
carburetors. They both were removed, cleaned and reassembled.
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Under surface of carb top plate
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Carb with top plate and float removed
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Float
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Engine
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009 Dizzy and front case. A race car runs most of
the time at full throttle or hard breaking. Although the 009 disty is
not the best choice for a street car, it works well for the race car.
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Oil breather catch tank mounted on the firewall
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Polished intake manifolds.
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Fuel pump replaced with oil breather tube. Oil
pressure transducer.
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High pressure full flow oil filter in the right
rear fender well.
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Oil Cooler in the front left fender well.
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Push rod tubes, deep sump and spring catches for
exhaust.
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Brakes
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Brake fluid reservoir
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Brake fluid reservoir with dual feed and overflow tube.
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Overflow catch bottle
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Front vented rotor and aluminum caliper.
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Inner view of front brake caliper.
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Master cylinder with rear brake pressure reducer.
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Low fluid switch on dual master cylinder.
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Rear brake with thin spacer.
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Pressure fed brake bleeding system.
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Suspension
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Trunk areas showing strut brace, fuel cell,
battery, fuses, fire extinguisher and the pressure bleeder for the
brakes.
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Top of front shock tower.
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Sway bar detail
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Front sway bar fittings.
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A-arm to cross member attachment.
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Front ride height adjustment.
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Center section of cross member. Note spacers to reduce bump steer.
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Rear Koni shocks. Note adjustment knob at the bottom.
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Electrical
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Fuse box
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Battery
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Fire Extinguisher
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Halon bottle and one outlet in the front trunk.
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Halon outlet in the engine compartment.
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Interior
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Passenger side seat belts.
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Seat belt connection under the car.
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Driver's seat.
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Last modified: Sat, 25 Jan 2003
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