Thread: max oil temp and min oil pressure

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Originally Posted by kitz

I don't understand running the block at 18 psi. Why would it not be evacuated as good as possible? Positve pressures will advance the likelyhood of seal problems and actually reduce oil flow through the bearings. The ambient pressure is a boundary condition for determining flows through the bearings.

Kitz

look at the radiator caps on your cars and trucks they all have a PSI rating on them. the reason for this is I run a jet boat the water is supplied from the pump to the engine. with a properly setup jet pump it will have anywere from 20 to 300 PSI of water pressure feeding the engine. I had a problem with loosing a freeze plug while I was only at 2500 RPM the gage was showing over 60 psi of block pressure. WAY TO MUCH IMO. so its set at 18 PSI now the block runs were I want it to with no hotspots that can be found.

Originally Posted by R Pope

Where is the cooler in relation to the regulator? It could well be the problem if it's restricting the flow .

this is the cooler I run here it is right after the pressure regulator

Originally Posted by Fourq

look at the radiator caps on your cars and trucks they all have a PSI rating on them. the reason for this is I run a jet boat the water is supplied from the pump to the engine. with a properly setup jet pump it will have anywere from 20 to 300 PSI of water pressure feeding the engine. I had a problem with loosing a freeze plug while I was only at 2500 RPM the gage was showing over 60 psi of block pressure. WAY TO MUCH IMO. so its set at 18 PSI now the block runs were I want it to with no hotspots that can be found.

Gotcha, I'm sorry, I misunderstood

Kitz

I don't get a pic from your link. Does the reg. bypass water overboard, robbing the cooler of flow?

Originally Posted by kitz

Gotcha, I'm sorry, I misunderstood

Kitz

no biggie just want to be clear to get the best advice I or anyone else reading can

Originally Posted by R Pope

I don't get a pic from your link. Does the reg. bypass water overboard, robbing the cooler of flow?

no it is simmiliar to the ones used on houses, it reduced pressure but not flow

Smokey Ynuick Say....The correct oil pressure is to have 10 psi for every 1000 RPM.

Originally Posted by Racecar100

Smokey Ynuick Say....The correct oil pressure is to have 10 psi for every 1000 RPM.

I read the same book also about 25 years ago.
A street engine does not need near that much oil pressure so street guys don't get all nervous.
A marine application is a whole other story.
In fact a lot of guys are going the other way on oil pressure in other words they are lowering it to save the dist. gear and make a few more hp.

with the rods in at .002.8 you will have 20psi hot at idle alot of the big blocks i do for race are set up about there . on the rods when the oil get warm it going thru them rods at 002.8 and that is just the way it works .less you run a dry sump .on stock stuff i set them up with 1/2 of the size your running on your rods so the stock oil pump can keep up .i have many big block set up loose and hot they never made 25 psi hot and never more then 65psi running hard and that 10 pounds for every 1000 rpm is bull shit if that was true i would have one big pile of big blocks i do not

Some good info here if you weed threw all the BS..lol

Q, What bearings are you running? You running the H series?I Can't remember.Did you put the 50 wgt in it yet?

well i would hope he is runing H type bearings ???? hope he is

Originally Posted by DennyW

Without BS, and H bearings, life would be dull.

i did know a guy that run the uppers on the lowers and the lowers on the top with the H rods bearings that was verry DULL

why we can work on the B.S while he is gone

hmmmmmmm where do we start

Originally Posted by DennyW

I'm going to go into my signature, and copy what I have in there, send you the picture. You can look at that, and also look right on my posting, in my signature, to see just how it is layed out. Just compare what I send you to what you now see on here. Ok ??

ok??????????