SKU: JE-PIS-293085

JE Pistons for BBC 638 293085

Part Number: 293085

$2,145.60


In Stock


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Australia wide rate - $30.00 (ETA: 3 days)

Description

Item: JE Pistons, BBC 638, Bore 4.625, Stroke 4.750, Rod Length 6.700, Dome +28.9cc, 623 Grams, Set

JE Pistons Nitrous Series pistons designed for nitrous featuring, vertical and lateral gas ports have been incorporated to optimize top ring seal and reduce friction. Ring grooves are machined to accept JE Pro Seal series J860 “HNS” Hardened Nitrous Series rings with .043 back-cut top ring, 1/16 taper face second ring and 3/16 oil ring. Compression height figured using 9.800? deck height with zero deck clearance. Fits most open chamber cylinder heads. Part Number 258199 is designed for a decked block.

Includes:

  • Pin #990-2930-18-51S (174g)
  • Double spiro locks (#990-042-CS)
  • Vertical and Lateral gas ports
  • Contact reduction grooves

    Compression Ratio:

  • 110cc 15.1:1
  • 118cc 14.0:1
  • 124cc 13.2:1
  • Photo is for illustration purposes only

    Specifications

    SKU JE-PIS-293085
    Brand JE Pistons
    Shipping Weight 10.0000kg
    Shipping Width 0.500m
    Shipping Height 0.200m
    Shipping Length 0.400m

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