TwinTurbo.NET: Nissan 300ZX forum - The problems I've seen with EPR builds are:
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Subject The problems I've seen with EPR builds are:
     
Posted by LitlElvis on April 10, 2019 at 8:58 PM
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In Reply To 2nd posted by zlife32 on April 10, 2019 at 09:05 AM
     
Message Crankshaft oil mod that plugs one side of the cross-drilling to "mimic straight-shot oiling". This basically cuts the oil supply to the rods in half but doesn't do anything remotely close to mimicking true straight-shot oiling.

Ridiculous intake porting to the injector cutout on the port roof that undercuts the gaskets and effectively deletes the function of the rubber seals around the ports. This mod might show some gain on a flowbench when testing the head only, but it's all for nothing when the lower plenum is bolted on (and I think all VGs eventually end up needing the lower plenum to run), besides the fact that compromising the gasket seal is simply a dumb idea.

Neither of these may keep an engine from making 700+ HP but I wouldn't take the parts for free after EPR applied their magic wand to them.

     
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