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DEALER ALFA WALL SIGN- PARTS ACCESSORIES
DEALER ALFA WALL SIGN- PARTS ACCESSORIES
$325.00
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Block Oil Passage Restrictor Roll Pin Sets 1300, 1600, 1750, 2000 Street Engines
[139-09470]
$7.50

IMPROVES OIL PRESSURE AT CRANKSHAFT

Too much oil pressure bleeds off at the six cam shaft journals. the six block oil passages are 5.3-5.5mm diameter. The roll pin restrictors reduce this to 3.5mm. the reduced volume to the cams is of no consequence. the increase in volume and pressure to the crank bearings is significant.

NOTE:

  • These are difficult to remove if you ever need to clean block oil passages.  For race, we recommend our brass EZ Remove Restrictors.
  • Roll pins are fine for street performance, but not full race.

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