FE Power Forums

FE Power Forums => FE Technical Forum => Topic started by: mammyjammer on June 08, 2012, 12:01:52 AM

Title: Low Oil Pressure.....my own damn fault!!
Post by: mammyjammer on June 08, 2012, 12:01:52 AM

Years ago I built a  428 for my 76 F-250 4X4.
 I did the infamous "Oil Mods". It has been so long I can't remember exactly what all I did, but I recall removing the oil plugs and running a drill bit from the rear to the front. Also recall some mods around the oil filter adapter. I did NOT install the Holley jets to restrict oil to the top end. Engine had 50 psi at idle until it warmed up to 150 and then dropped to 12-15.
Life got in the way of fixing it and I reluctantly parked it.
 I am now ready to get after it and drop it in my 58 Fairlane.
My question (finally) is "What did i hurt?"
 I'm assuming that leaving the jets out to the top end have something to do with it, but......

Title: Re: Low Oil Pressure.....my own damn fault!!
Post by: jayb on June 08, 2012, 10:40:41 AM

I don't think you hurt anything.  12-15 psi at idle is just fine, especially if you are running 10W-40 or similar weight oil.   I'd throw in the restrictors and run it.

Title: Unless your Idle speed was 1000 RPM don't worry about it
Post by: runthatjunk on June 09, 2012, 12:32:17 AM

 n/m

Title: Re: Low Oil Pressure.....my own damn fault!!
Post by: Barry_R on June 09, 2012, 05:53:42 AM

x3
Run it.
As long as the oil pressure goes up with the tach you're not hurting anything
I'd put the restrictors in teh heads - usually good for a couple pounds at idle that make you feel better...

Title: Re: Low Oil Pressure.....my own damn fault!!
Post by: mammyjammer on June 09, 2012, 11:53:11 PM

 Any suggestions on what size Holley jet to use for the restriction?

Title: Re: Low Oil Pressure.....my own damn fault!!
Post by: rcodecj on June 10, 2012, 08:03:56 AM

Quote from: Barry_R on June 09, 2012, 05:53:42 AM

x3
Run it.
As long as the oil pressure goes up with the tach you're not hurting anything
I'd put the restrictors in teh heads - usually good for a couple pounds at idle that make you feel better...

I'd try .060 to .070, watching the top end to see how it looks.

Title: Re: Low Oil Pressure.....my own damn fault!!
Post by: My427stang on June 10, 2012, 08:50:29 AM

I agree it wont hurt anything

However, if its out, I'd probably check the mains.  If they are loose it'll bleed oil pressure.

The other likely culprit is cam bushings.

Title: Re: Low Oil Pressure.....my own damn fault!!
Post by: mammyjammer on June 10, 2012, 11:47:54 AM

Thanks to all for the responses!!!
I have to swap the truck pan for the car pan anyway, so I might as well take a look at the mains,
look for mung in the bottom of the pan etc. After reading the forum's opinions,  I have a feeling everything thing is fine but I'm  real nervous about oil pressure, as oiling problems are why I pulled the 352.
It was getting tired and had some noisy lifters that would  quiet down on their own. The last straw was when I heard what sounded like all the lifters collapsing at once. Pulled the valve covers and it was bone dry on top of the heads!