Marcus Jones Races the Number 95 MGB (formerly owned and raced by Don Munoz)
Marcus Jones' 1964 MGB Race Car, Number 95
Driver: Marcus JonesCity: Moseley VA
Model: 1964 MG MGB
Engine: BMC B-Series, 1840cc
Built by: Don Munoz
History of the Don Munoz MGB
This 1964 MGB was purchased new in 1964 by Don Munoz. From 1965 to 1975, Don raced the number 95
MGB in countless SCCA races, and was quite competitive. When Don's son was born, the MGB was put
into storage for eighteen years. Then the MGB was removed from storage, detuned, and given to
Don's son to drive when he went off to college. Following college, the car was once again converted
into a race car. Don Munoz enjoyed about ten years of vintage racing the car before selling it to
Allen Fine. (Don purchased a Lotus 23 sports racer.) The black number-95 MGB has been driven by
Marcus Jones since 2004.
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Features and Specifications
| Engine: | Prather Racing prepared BMC B-Series four cylinder. 1840cc.
Prather camshaft. Dual 1.75" S.U. carburetors with K&N air filters.
Mallory Unilite distributor. Lucas sport coil. MSD spark plug wires.
Johnson HTP external oil pump (wet sump) and Jones Racing Products pulley system. |
| Cooling: | Howe aluminum radiator (part# 342MG1). |
| Exhaust: | custom stainless steel header and exhaust system. Race muffler. |
| Transmission: | Quaife (Borg Warner T9-based) dog-ring 5-speed. Tilton clutch. |
| Rear Axle: | stock MGB banjo axle with 4.55 or 4.88:1 gear (depending on track)
and limited slip differential. |
| Front Susp.: | modified and lightened front crossmember.
Modified spindles. |
| Rear Susp.: | lowering blocks. SPAX telescoping shock absorbers.
Anti-tramp bars.
Dave Headley (Fab-Tek) anti-sway bar. |
| Brakes: | (master) dual Tilton master cylinders with dashboard-adjustable bias bar, plus a Wilwood proportioning valve on the rear line. (front) Wilwood Superlite front calipers with Carbotech pads. (rear) MG drum brakes with Carbotech shoes. |
| Wheels/Tires: | real magnesium Minilite wheels.
Hoosier "Street T.D." P205/60D14 bias ply tires. |
| Electrical: | (no charging system.) |
| Instruments: | (left to right)
AutoMeter fuel pressure (0-15psi),
oil pressure (0-100psi),
SportComp tachometer (0-8000rpm),
shift light,
oil temperature (140-280F),
coolant temperature (120-240F),
Westach dual EGT gauge (700-1700F),
voltmeter (0-18V). |
| Fuel System: | fuel cell.
Facet cylindrical fuel pump.
Billet aluminum fuel filter.
Holley fuel pressure regulator. |
| Safety Eqmt.: | custom roll cage.
Butler Built seat.
Race Quip five point cam lok harness.
Emergency Suppression Systems (ESS) 2.3L fire suppression system.
Wink mirror.
Sierra Racing Products quick release steering wheel hub. |
| Performance: | 170hp at 7000rpm, as measured on the Prather Racing dynomometer. |
| Weight: | 1930 pounds. |
| Racing Class: | 3DP |
Engine Installation
BMC B-Series four cylinder, 1840cc.
Lucas Sport Coil. Next to it, the MicroDynamics RL3 smooth-cut rev limiter is temporarily disconnected.
AutoMeter fuel pressure gauge isolator (pink aluminum, shown at left) is required so that fuel doesn't
need to be plumbed into the driver compartment. It's connected to a Holley pressure regulator.
Tilton remote-mounted fluid reservoirs, and custom aluminum coolant header tank.
K&N air filters on S.U. HS6 (1.75") carburetors.
Engine turned aluminum radiator duct.
Howe aluminum radiator (part# 342MG1).
"Driver Don: Munoz. Crew Chief: Jim Alexander. SCCA, SVRA, VSCDA, VARAC, HSR - 1964-2004."
Mallory Unilite distributor.
Johnson HTP external oil pump (wet sump) and Jones Racing Products pulley system.
Modified MGB oil pan, and specifically the pick-up plumbing.
Oversize oil cooler, and the ductwork to it.
"Engine Prepared by Prather Racing"
Front Suspension
Wilwood Superlite front calipers with Carbotech pads.
Rear Suspension
Banjo axle, anti-tramp bars, and telescoping shock absorbers.
Dave Headley rear anti-sway bar.
Interior
AutoMeter Sport-Comp "Monster" (five inch) tachometer.
Sierra Racing Products quick release steering wheel hub.
(left to right) AutoMeter fuel pressure (0-15psi) and oil pressure (0-100psi) gauges,
SportComp tachometer (0-8000rpm), shift light...
...AutoMeter oil temperature (140-280F) and coolant temperature (120-240F) gauges.
Westach dual EGT gauge (700-1700F), and voltmeter (0-18V).
Wink mirror.
Emergency shut-off switch.
Tilton 600-series floor mounted clutch and brake pedals.
Shifter, for the Quaife 5-speed dog-ring transmission.
Emergency Suppression Systems (ESS) 2.3L fire suppression system.
Wilwood proportioning valve on the rear brake line.
Butler Built seat.
Race Quip five point cam lok harness.
Shoulder harness attachment.
(Roll cage construction details.)
(Roll cage construction details.)
Stadium seat (installed to avoid the 20# weight penalty assessed for removal of passenger seat.)
Fuel cell.
Facet cylindrical fuel pump.
Exterior
Sebring style headlamp fairing.
Subtle fender flare.
"The Fabulous Trashwagon"
Sebring style rear valance.
Real magnesium Minilite wheels. Hoosier Street T.D. P205/60D14 bias ply tires.
All photos shown here are from June 2009, when we viewed the car at The Heacock Classic Gold Cup at
Virginia International Raceway, or from September 2009 when we viewed the car at The US Vintage Grand
Prix at Watkins Glen. All photos by Curtis Jacobson for BritishRaceCar.com, copyright 2009.
All rights reserved.
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