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I currently have a blown up Series 2 in my R33 Skyline, I do not believe it was from lack of oil pressure as my logs from my Link ecu does not show loss of oil pressure. However, I've still managed to spin the 3rd main bearing. I am putting this down to wear and tear (the motor is the original 20+ year old motor, had 244,000km and running 400rwhp for more than 4 years).

I currently have a NEO 25DET at engine shop being modified to suit some new nitto pistons and rods, I've chosen to go for the Sine drive nitto pump, and grub screwed collar as well. The machine shop has recommended getting the oil drains drilled out 1.5mm bigger and the head and block modified to suit rb26 head studs size. PRP rear head drain will be fitted as well as rb26 valve covers and hi-octane baffle kit. On top of all this I've also ordered a Lewis Engines oversized and baffled sump as well as a accusump to finish off the oiling system. 

The machine shop will also be polishing the inside of the block (to clean up the castings) and spraying it with a special coating I forgot the name but they said this helps the oil flow back to the sump and cleaning up the hard edges on the oil pump. 

This combination, with a garrett gt3076 gen 2 0.83 AR should hopefully make a fairly safe 600whp on e85. Is there any other modifications I should get done whilst the motor is apart?

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11 hours ago, joshuaho96 said:

My understanding is that MotiveDVD is the word of god and they recommended a head drain in their oil control video, thus the head drain is the only way to go.

I don't believe in God I believe in evidence...so no rear oil drain particularly if you are getting an accusump system

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22 hours ago, Blakeo said:

special coating I forgot the name

Paint

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42 minutes ago, Ben C34 said:

Paint

Its called Glyptal apparently it repels oil and let's oil return faster. 

 

Do you guys realise a accusump isn't a dry sump setup? I've had a couple people pm me stating I don't need all these mods with the accusump as the scavenge pumps fix the head issues so no head drain or sump mods are needed. 

Accusump is a charged oil canister that pumps oil into the engine once it gets below a certain psi limit (usually 10-15psi).

 

 

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21 minutes ago, Blakeo said:

Its called Glyptal apparently it repels oil and let's oil return faster. 

 

Do you guys realise a accusump isn't a dry sump setup? I've had a couple people pm me stating I don't need all these mods with the accusump as the scavenge pumps fix the head issues so no head drain or sump mods are needed. 

Accusump is a charged oil canister that pumps oil into the engine once it gets below a certain psi limit (usually 10-15psi).

 

 

Yes I know what it is. One of the main oil control issues is high capacity oil pumps draining the sump faster than it can flow back down. Accusump maintains oil pressure. Rear head "drain" does nothing. My suggestion is read say the last half of the oil control thread. But its your car you can do what you like.

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Your going to be pushing to get to 600 whp with that turbo,i had the gtx 3076 gen 2 and maxed it out at around 520 whp with a .83 rear housing on e85 pushing around 24 psi, just put a g35 900 on and makes the 600 whp with ease and hardly any more lag than the gtx 3076 gen 2, these new g series are a game changer.

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