Oil Pressure?

[Forzfed]

I know it is like beating a dead horse.  I finally got the 4.1 running and put a new Delco cover on it that I had sitting around for ever.  My oil pressure cold is around 60 if not a bit shy.  I'm thinking since I will probably be revving the engine close to 6500 rpm I might need some more oil pressure going by the 10 psi/1000 rpm rule.  What do you guys think?

[Scoobum]

Think mine's about 35 psi hot with my foot on the brake and in D. I buzz it to 5800 at the shift points. I haven't had any issues. Don't ask me what it is at 5800...cuz I ain't got time to look...lol!

[Steve Wood]

Sounds good to me

[Forzfed]

I'm sitting at 25psi hot at idle.  This is a stock ported cover not a high volume.  But I would like to rev it to 8k!

[earlbrown]

I'm thinking since I will probably be revving the engine close to 6500 rpm I might need some more oil pressure going by the 10 psi/1000 rpm rule.  What do you guys think?

I think oil technology has come just a little ways since the 10PSI/1000rpm rule was invented.

but if you just have to jack up the pressure, start adding 6mm washers under the 1" nut on the relief valve.

[Forzfed]

I'm fine with that Earl I do not want to run crazy pressure!

[daveismissing]

I thought near zero hot idle pressure was a Buick requirement?

[Steve Wood]

Conley always told me that a Buick was good if it had 7 psi of pressure at hot idle...

[good2win22]

I know one fella who put a fitting in the back of the lifter gallery, ran a line and notched the tranny bell housing.  He has his oil pressure sending unit mounted to that line. Says it's the end of the line for the oil plumbing. He has 10-12 psi, hot idle on Joe Gibbs 10w40(xp7). I don't remember if he had the big pump gears or not

[earlbrown]

You can mke the gears a foot tall and it won't matter.     Once the gears are spinning it's the relief spring that sets the pressure at the block.

[Forzfed]

So, get this!  I put an oil cooler on the car last weekend.  Broke it in with out one.  Didn't want to take a chance of metal filings from the old one going into my new motor.  I didn't realize the new cooler is twice as big as the old one!  And with the weather getting a little cooler now I can't get below 45 psi at idle.  Recommendation s?  I'm switching over to synthetic next year.  This race oil I'm running is too thick!

[Steve Wood]

better switch to a lighter weight oil now....gonna be snapping the cam sensor gear pin and wearing out the front cam bearing fast, imo

[Forzfed]

Yeah, I was kind of thinking that too.

[Forzfed]

With the cooler the oil worked out to $100.  Oh, well I guess it will be clean.  What do you guys think for viscosity?  I was thinking 10w40 in Synthetic should be good?

[earlbrown]

Go as thin as you can on the second number for your exact engine to maintain the pressure you need at WOT.

On the first number go as low as you can get (and it'll still be too thick).