Z28harcor

good or bad idea?? running a hv pump with 20-50 7 quart pan.. still low oil pressure

93M6Formula

What oil bypass do you mean?

And how low is your oil pressure?

RamAir95TA

iTrader: (2)

It sounds like a bad idea. Don't do it. If you have low oil pressure (verified) something is wrong and no amount of tricks will fix it.

How low is your oil pressure?

SS RRR

iTrader: (2)

Can not imagine the parasitic drag that's causing. If your pressure is truly low with those two things then most likely the engine has to come apart. Verify oil pressure with mechanical gauge before going any further.

WS Sick

Dirty oil > no oil. Your oil pressure problem is not caused or helped by the by-pass.

Z28harcor

engine just had crank ground .01 under with all new cleviete h series bearings..engine guy told me it had .0025 clearance.. i have a mechanical gauge when hot the car had 8psi at idle a.d about 60 when i rev it up.... crank was ground because it had low pressure even with a gm performance high pressure pump with 20w-50.. this time we tried a hv and ground the crank and the oil pressure is even worse.... im fucked idk what to do.. no warrenty either

Z28harcor

If i put the bypass back in will it help my oil pressure?? oh and i deleted the oil cooler.. I read some forums that you get better pressure without the restrictive cooler that the 95s+ had

WS Sick

What did the cam bearings look like, Did all plugs in the oil galleys get put back in?
A comming plug that gets forgot is the one right under the Rear main cap that gois to the passage that's straight up to the spot the gage is located.
If you pull of the elbo the gage sender is screwed into and put a screwdriver down that hole it should only go in 8 1/2 inches.

93M6Formula

I deleted the oil "cooler" on my '93 and never looked back. Less leaks and more oil pressure.

Anyway, 8 PSI at idle really isn't bad, A SBC really only needs about 5 PSI at aidle. It's not the greatest but not the worst either.

WS Sick

Right, On the factory oil-cooler note I have deleted it from all my cars and use a taller filter. IMO it's not a "true" oil cooler anyway.

Z28harcor

yeah but its till scary on a new engine with 150 miles and just been rebuilt and crank ground. let alone the 20w-50 with a hv pump

Z28harcor

New bearings, supposed to be anyway and i would check but that elbo and sensor are a PITA to get out in the car

WS Sick

I can understand that. Do you have a mechanical gauge you can hook to it to see if the dash is accurate?

Z28harcor

Yea a sunpro gauge.. This is stupid but will it matter if there is air in the line?? And not fully filled with oil.

Z28harcor

It's hooked up to the plug just above the filter.. And it matches the gauge in the dash pretty damn close

wrd1972

iTrader: (12)

I read on Corvette message board by a guy who claimed to be a GM engineer and he stated it was more of an oil warmer. He stated it was used to bring the oil temps up faster as to reduce emissions. I also agree that the thing appears to have little ability to actually cool the oil especially since mine was clogged up anyway.

FTR, my engine builder plugged the bypass hole in the filter adapter just to ensure that ALL oil goes through the filter even under cold start.

WS Sick

The air should push out and it will compress. But if it is reading close to the dash gauge then it's probably right.

fex77k

iTrader: (2)

This is mostly correct. The oil will still get hot, but it will take longer with the cooler. If you expect it to work for long streches of wide open throttle, then it will come up short.

As far as the bypass, I have plugged all my motors. I only want filtered oil going into the motor. You don't have to do this, but I do.

quik95lt1

iTrader: (7)

what part # bearing was used? that oil pressure is wrong 8psi is way out of wack for what you have there, I run a high volume std pressure pump with clearances looser than .0025.......I idle it at 25psi and never exceed 55psi at any rpm......with the same 20w50 oil u run....somethings wrong

Z28harcor

i dont know the part number all he said was h series clevitte..i wanna pull it back apart this winter and take the ***** eagle crank out for something a little better like a dragon slayer.. then maybe some boost...just saying kinda off topic haha but anyway the stock lt1 spun a bearing so i bought the stroker kit.. he never line bored it so maybe the main bearing cap or block got fucked and he just slapped a bearing over it??