Restricting cam oiling on street engine?

Posted By: HotRodDave

Restricting cam oiling on street engine? - 01/17/15 11:41 PM

Is it OK to drill a smaller hole in the cam bearing and line that one up intead of the big factory hole in order to get a little more to the crank? If yes how small to go?

Posted By: Cab_Burge

Re: Restricting cam oiling on street engine? - 01/18/15 05:32 AM

I never seen a need for that, even on all out roller cam race motors oiling the rockers full time through the # 4 cam journal

Your choice, your call

Posted By: dusturbd340W5

Re: Restricting cam oiling on street engine? - 01/18/15 06:05 AM

I have ran .063 holes in the cam bearings with no problem, but I was not oiling the rockers though the block

Posted By: MR_P_BODY

Re: Restricting cam oiling on street engine? - 01/18/15 06:12 AM

Quote:

I have ran .063 holes in the cam bearings with no problem, but I was not oiling the rockers though the block

What were you oiling then with that hole

Posted By: HotRodDave

Re: Restricting cam oiling on street engine? - 01/19/15 12:12 AM

Should have clarified it is a magnum so PR oiling. Just the bearing journal it self is going to get oil from that hole, nothing else.

Posted By: mikesiron

Re: Restricting cam oiling on street engine? - 01/19/15 05:19 AM

In my round track engines I tape the oil hole from the main bearing to the cam bearings 5/16-18 and put an allen set screw in the center three mains. I drill the set screws with a .090 drill.

Posted By: 408Dust

Re: Restricting cam oiling on street engine? - 01/19/15 06:14 AM

.030 on mine no need for all of that oil to the cam bearings. PR also.

Posted By: MR_P_BODY

Re: Restricting cam oiling on street engine? - 01/19/15 07:28 AM

Quote:

.030 on mine no need for all of that oil to the cam bearings. PR also.

How many rpms are you guys turning that you have to
restrict the oil to the top... did you spin any main
or rod bearings before... I run LA stuff and never
reduced the volume to the top and I never drained the
pan(over size pan) and dont have a problem spinning
bearings .. turning up to and higher than 8200 rpm

Posted By: RapidRobert

Re: Restricting cam oiling on street engine? - 01/19/15 07:35 AM

Quote:

Should have clarified it is a magnum so PR oiling. Just the bearing journal it self is going to get oil from that hole, nothing else.

1/16" hole in set screws for all (5) cam journals. It's worthwhile as alot of oil is wasted down there. go to www.moparchat.com then scroll down to & click on "circle track chat" then read thru Sanborns oiling mods that are in a sticky at the top (it'll take ya awhile) for the whole scoop

Posted By: 408Dust

Re: Restricting cam oiling on street engine? - 01/19/15 09:42 AM

Quote:

Quote:

.030 on mine no need for all of that oil to the cam bearings. PR also.

How many rpms are you guys turning that you have to
restrict the oil to the top... did you spin any main
or rod bearings before... I run LA stuff and never
reduced the volume to the top and I never drained the
pan(over size pan) and dont have a problem spinning
bearings .. turning up to and higher than 8200 rpm

8300 to 8500 no bearing problems super stock motor.

Posted By: HotRodDave

Re: Restricting cam oiling on street engine? - 01/19/15 09:39 PM

More of a longevity/high miles, thing heavy load on the motor pretty much all the time. I have seen plenty of high miles stock engines spin crank bearings. I figure a tad more oil kept in the pan and a tad more to the crank bearings would help if it is not needed at the cam journal.