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vtec oil pressure switch

10K views 4 replies 3 participants last post by  K20actr.J 
#1 ·
why is it a jdm k20a engine doesnt have vtec oil pressure switch? and the usdm engines have..
 
#3 ·
These engine have no pressure switch sensor.

Does that mean they have no pressure switch?! Which function would guarantee the activation of the high speed lobe? There is only one, the pressure switch, providing pressurized oil to the log pin of the rollers. You need that switch for that pressurized oil.

Maybe the Japanese guys don't use that diagnose parameter because of a different local engine certification process or it is historical/evolutionary...who knows?

Markus
 
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