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taking the L motor to new hp levels


peter mc

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I like the external water pipe, years ago I talked a mate into doing that setup on his turbo motor because the previous engine had lots of damage to the head from excessive temps around the chambers. We modelled it off the pictures from the crossflow L head (or was it an FIA head... can't remember).  As an example of how bad the head had been corrorded, the return feed to the water pump near No.1 spark plug had about 1mm of metal left.  Probably a combination of pump cavitation and nucleate boiling around the exhaust valves.

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Great result and excellent production!

 

Pete, its sounds like its surges around 6,000 rpm just as it comes into it the meaty part of the power curve. Is this just the point where the inlet resonance is just starting to work as the dyno holds it back? Would you feel driving the car or is it only apparent on the dyno?

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