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Thumbnail Filmstrip of Enderle Metering Spool for K Style Barrel UNBLOWN or low Boosted Engines- all fuels ok Images
Tunnel Ram or Unblown all fuels
Note : In some cases with very small Blown Alky engines, you can use this spool to achieve More Idle tuning.
The return hole is also .250 " in size which lets more fuel get to the check valve sooner.
We also use this on Turbo Engines where boost comes on slowly See also EN-4020-BA EN-4020-G
The metering Piston (Spool) for K Style Enderle & Alkydigger K Barrel Valves,
Standard equipment on all Big and Uglys and most Buzzard Catchers.
Lower check Valve = EN-6001-2 Pills are EN-7009
K Valve Spool