About Kan-390:
Our Kan-390 head is not produced by reverse engineering, so it is not simply a large port head. if you attention to the intake and exhaust ports, it is clear that it has nothing to do with the original k-series head. The K-series oem head when designing fabrication it was designed to be used in many areas because this vehicle was suitable for daily drive use to.
What improvements we made to our head.
-Friction port surface below 1 percent we get with special cnc cutting.
-High port slope angle.
-Port injector channel special designed to improve air and fuel mixture.
-Exhaust port design with turbulence rate close to zero at high and low rpm.
-Improved oil channels (at 900 rpm plus 0.3 psi )
-Improved oil recycling channels.
-Different valve angles designed to prevent at high lift valve to valve hit problem.
Features:
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CNC Ported/Machined finish port
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6068 Rolled type t6 head material
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Formula technology port design
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Hand blended finish work (your choice)
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50,5-49-48 cc Comp. Chamber choices
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Intake over 390 cfm
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Exhaust over 287cfm
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4-angle Valve job
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Heads are ultra Sonic cleaned prior to assembly
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Machined PPR logo
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36mm Nimonic Intake Valves
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31mm Nimonic Exhaust Valves
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Forged Bronze alloy intake Valve seats
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Forged Beryllium alloy exhaust valve seats
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Bronze alloy guides
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Performance Valve Springs 90lbs
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Long life tool steel or titanium retainer
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Hardened Steel Spring Platforms
Recommended to use;
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Pro Track race setup.
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Pro Street race setup.