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Aqua Pump fits 2000 1982-89 BOSCH FI SPIDERS WITH NO A/C
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Valve 2000 Race/Street Special Oversize 8x46mm 45 degree Intake Each
[20008IVOS]
$0.00

Made of special stainless steel alloy.  Weight 84g.  This is 17g lighter than 9x45 valve.  Use lighter spring pressure and increase HP.

According to Jim K's research these 2mm oversize intake valves with 8mm stems greatly improves the flow beyond the 9x45mm 1mm oversize.

  • This 1mm smaller stem increases flow
  • These 46mm diameter valves overlap the stock 45.35mm seats about .017".  Flow is greatly enhanced for both low and top end power.  
  • We have special alloy oversize racing seats.  (See Part #605-79204-1)
  • Use only retracted tip spark plugs with this 2mm oversize valve.

For more information on valve sizing and cylinder head performance get a copy of The Alfa Romeo Engine High Performance Manual by Jim Kartalamakis, Veloce Publishing.

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Spruell Motorsport Alfa is your source for performance parts for Alfa Romeo.
We specialize in Alfa Romeo 101, 105 and 115 drive train products for engine, gearbox, differential and wheels.
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