I never said it didnt drop with temp. I said earlier in the thread my pressure cold is in 90s, and once up to temp in the 70s while running. Sure after a hard run and come to idle theyll be at 35ish in gear. What they dont do, is drop oil pressure when going from 4000 to 5500.

My operating range is 180-210 on my oil temps. Nothing fancy about my oil system. Stock chevy pumps that mike tkach shimmed for me, proper sized remote oil lines, no hokey restrictive fittings, merc racing thermostatic oil filter heads, canton oil pan with windage tray and trap doors, and a plate cooler.

Before mike and i redid the engines, and shimmed the pumps, i had about 50-60psi at cruise, with pressure dropping to 40-50psi at wot. It wasnt a temp issue, as my temps were good. Only think i can think of was it being all the restricive 90* fittings used in the remote system.

Don`t lie to me!!!

Dam. You got me. My oil temp hits 270 because im running stock coolers , my oil pressure is 16psi at wot. I only run walmart supertech straight 5w oil for that extra top end speed! Lol

What do you guys think about running custom 20w5 weight oil? And maybe an aftluber that pressurizes my oil system when i shut the engine off

Walmart supertech oil ! That gave me the a.m .laugh I was looking for .good point on fittings ,

Mike,
Changed the oil to Kendall GT-1 20-50 WT racing oil with ZDDP. Going to test today. And I only dumped in 11 qts, oil is showing "ADD" mark on the dip stick. I'll have the 12th qt with me
Thanks,
Dean

M,
The new oil temp sendor that I ordered IS different that the 1 that was in there so I changed that out.
Thanks,
Dean

If you r going the Walmart oil route I recommend 2 cap fills of head and shoulders for the zinc additive and it will help keep the crankcase clean...

^^ lol

Yes, theres senders for short sweep gauges and full sweep gauges. Plus senders for different gauge models.

Good luck with the testing today! Wish i was on the water today

MT,
Wish you here today so we could go for a blast and see what you think is going on! :)

Well, it looks like the oil temp problem is fixed. I changed the oil temp sender, and changed the oil to Kendall Gt1 20-50 Wt. Thanks to all that that had input. Now I have to replace my water Pressure dump valve, it stuck open, and I had to remove it yesterday before I could run, and I could NOT WOT the boat, my water pressure was spiking at 30 PSI at 4800 RPMs...

Interesting thread. How warm was the oil cooler after this change? 85deg?

Doc,
Yeah about 85-90 deg.

So did you get to run it wide open?

What was the fix for the low oil pressure at wot?

MT,
No, my water pressure relief valve failed in the open position at the dock, so i removed it and ran her up to 4800 rpm, BUT my water pressure was spiking over 30 PSI, so I had to back out of it. Testing the water pressure relief valve now, trying to get some data off the valve now, only #'s are 1247 on the adjustment knob....
Thanks,
Dean

This is the valve I need to replace:

http://www.hardin-marine.com/p-978-w...4quot-npt.aspx

okay so I took the water dump valve completely apart cleaned it put it back together put it in the boat I test ran it on the hose, and seemed to work and I will run her this weekend. The weather is beautiful supposed to be in the low to mid 80s

I was going to suggest that Dean. There's not a whole lot that can go wrong with a spring operated pressure relief valve.

Cole,
I supported some Mystic 39 CC testing last week in Lake Monroe, and there was Hydria all over the place, I think I might have picked up some, and yeah I looked at it, took it apart, greased everything, and back together again. We'll see on Sat.
Thanks,
Dean