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Custom Modifications
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Stage 4 MGB engine on Prather
Racing dyno. |
At Prather Racing Inc., we modify
every engine for higher compression oiling needs. We also manufacture an
expanded eight-quart oil pan with baffling that sits no lower than the
stock pan. We have all the modifications and abilities to produce the
best, most reliable and longest living MGA and MGB  engines anywhere. Stock
dampers are currently 20-40 years old and beginning to deteriorate. We
have developed new damper systems that eliminate 100 percent of the
harmonic resonance in these engines. There are three different options of
damper setups. Our high-rev setup incorporate a cog belt drive and the
others use a V-belt. The V-belt setup costs $595 list price and $475 racer
cost. The cog belt drive lists at $925 ($775 racer cost). This setup
allows for dry sump lubrication. The stock replacement damper for
high-performance solo or vintage racing on a budget is only $225 for a
very nice unit.
Other
high-performance parts available through Prather Racing are:
 - Custom camshafts for all stages of
engines. Our cams have the correct Hertz pressure for the 0.812 MG lifter.
This means they will have the power you want, where you want it and the
cam will live.
- Crank preparation—deep nitriting,
cross drilling and exchange.
- Cylinder head service from
freshening up to full porting.
- Lightened and balanced flywheels.
- High volume oil pump modifications.
- Distributor re-curving and service.
- Custom pistons and offset boring.
 We
have also developed a rear disc brake conversion for MGAs and MGBs. The
kit comes with custom rotors, Wilwood calipers with Hawk black pads,
custom brackets and all the required hardware for $625.
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