Hx35 unrestricted from OFH oil pressure within spec

[DROPthatCLUTCH]

Hey guys, I finally got the engine fired up an just wanted to make a thread about the pressure at the turbo.

Fed from a ported OFH with a -4an line unrestricted and a -12an drain and ported pan my oil pressure settled to about 17psi at 1100rpm idle. I'm expecting that to drop a little more once I straighten out the idle. Just wanted to let everyone know that a proper -12an drain seems to be perfect if you want to run unrestricted.

Ill update with pressure numbers throughout The rpm range soon...

 

[crash89]

This is great! I am also running a ported OFH and -4 feed line unrestricted and a 3/4" drain tube on my hx35. Havent noticed any issues thus far. Im interested to see what other numbers you see!!

 

[DROPthatCLUTCH]

Alright to update: pressure gets up to about 60-70 psi @4.5-5k hits 80psi at 6k and stays there till 7.5 when I get off. Doesn't get much more perfect then that. Obviously the ported filter housing has a lot to do with it because my engine pressure is the exact same way; doesn't climb past 85psi when the relief valve opens up.

 

[Boostdriven]

I've been feeding holsets since 2005 from the OFH with #6 line unrestricted with modified stock 2g oil drain. My OFH is not ported so my oil pressure hits 100 psi at about 5000 rpms and I really don't know how much pressure I have at 8500 rpms because my gauge only reads to 100 psi. I've had this high oil pressure for about 8 years now with no side effects. I think higher oil pressure is better for the engine when you rev it to 9000 rpms and make over 500 whp, for this reason I didn't port my OFH.

 

[crash89]

Based on my readings on here, if your drain is adequate enough, you can throw as much oil at whatever psi you want at it. As long as as it can drain fast enough and not back up in the center cartridge, golden!