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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


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Old 04-10-2019, 01:41 AM   #1
speedgod^s13
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Quote:
Originally Posted by brndck View Post
wtf? why would the stock pump NOT be able to produce enough pressure?

I could understand a small drop in psi right when the thermostatic plate opens, but your concern is oil pressure IN THE BLOCK, not as much in the cooler. As long as you have consistent psi through the bearings and journals, piston squirters and cams, the trade off of having cool oil is more than worth the benefit.

i'm not sure who your engine builder is, but I've yet to hear of an instance where someone wrecked a bearing or starved a motor because of the pressure drop of running a (assuming they didn't have the lines backwards) oil cooler or filter relocation kit on an sr20
He's not my engine builder, just a friend that owns a shop in Texas, who has built quite a lot of sr's and rb's. I'm not saying that he's the end all be all when it comes to oil pressure knowledge, but I trust him enough to take his word on this.

Quote:
Originally Posted by brndck View Post
if youre serious about being concerned over loss of oil pressure due to a oil cooler, either shim your existing oil pump or upgrade to a gti-r or s15 pump.

http://www.nissansilvia.com/forums/t...p-for-sr20det/

https://motoiq.com/oil-pump-blueprinting/1/
He actually did suggest that I run another oem Nissan oil pump (can't recall which one), but I didn't want to go through the hassle of taking apart my motor to do so.

Quote:
Originally Posted by jr_ss View Post
A healthy SR and oil pump should have no issues with an oil cooler. In fact, adding said oil cooler will prolong the life of your engine bearings. These motors run notoriously hot and like to eat bearings for breakfast lunch and dinner.
Well, I'm definitely doing to run the oil cooler. The only difference now is that I'm leaving the filter on the thermostatic sandwich plate that I have. My car is on air suspension anyhow, and you gotta go below to drain the oil, so the filter relocation is negligible, in terms of convenience.

Quote:
Originally Posted by derass View Post
I'd only use a thermostatic sandwich plate on a street car.
I've got the Trust one, which is going to replace the Tomei oil block.
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