Engine 306 oil leaks!

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7991LXnSHO

wanna catch the space herp
10 Year Member
Sep 1, 2010
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1,734
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Kearney, NE
It should not blow a filter at 60 psi, although we do not know if that’s at idle or 5000 RPM.
 

7991LXnSHO

wanna catch the space herp
10 Year Member
Sep 1, 2010
5,385
1,734
194
Kearney, NE
Btw, the thread title has struck my funny bone. I thought 306 oil leaks might be about a normal air cooled engine or someone’s custom oil pan. It’s also a good starting line for a parody of 76 Trombones. Professor Hill becomes a mechanic in the sequel musical to the Music Man.
Have the PCV lines been cleaned out, and have you found the leak?
 
Feb 26, 2018
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Cold 60 psi is good, warn at ldle should be around 25 psi , 40-50 psi cruising around. HV pumps are a waste of HP! Unless you have had the oil ports on the engine and heads enlarged, it's only going to move so much oil. 302 have IMHO always had great oil system feed and never seen a reason for them.
 
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Scott7512

Active Member
May 19, 2015
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Branchland WV
Mine was leaking in the same area. It was a cork gasket on the back of the lower intake. It looked like it had shifted on install. Got a gasket kit with the silicone front and rear gaskets and solved the oil leak.
 
May 12, 2018
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Mine was leaking in the same area. It was a cork gasket on the back of the lower intake. It looked like it had shifted on install. Got a gasket kit with the silicone front and rear gaskets and solved the oil leak.
Took out the screen underneath pcv valve and cleaned it. It was pretty bad so hopefully this week I'll grab an inspection mirror and find leak
 
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