ZMANALEX

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Sounds like an oil pressure sender failure.

I am not surprised in the slightest that reverting to an OEM air box has solved your issue. Always best to stick with the OEM air intake boxes for DE and HR models. By all means, swop out the filters for Cosworth, HKS, K&N or similar, but always retain the OEM filter box. Nissan did not spend many hours and mega money on developing their OEM air intake boxes for nothing.

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Just slip a pair of these into the rear pipes which will only take a minute at most: Job Done.

Plenty new covers here: https://www.ebay.com/b/Engine-Valve-Covers-for-Nissan-350Z/33627/bn_1457574

From the vid it would appear that you have a serious internal engine knock. I would recommend that you do not drive the car until further investigation is carried out, but I am fearing the worse I am afraid.

A vid. would help James.

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Get well soon Paul and I hope that you have a speedy and full recovery.

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In stock and good to go same/next day, just drop me a PM if I can help further.

I would certainly assume so but only if you ask.

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Genuine brand new OEM in stock and good to go same/next day: £39.50 each.

Drilling will also be a major problem for you as standard HSS drill bits will not look at these buckets. You will require Cobalt (HSCO) or Carbide (CARB) Might be a plan to send this small drilling job to your local engineering firm.

Sorry mate but I only have pre-facelift in stock at the minute I am afraid.

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The pre-facelift is different from the facelift.

What brand of SS exhaust do you have?