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Re: [Fot] Supplimental oil feed to head... again

Subject: Re: [Fot] Supplimental oil feed to head... again
Date: Thu, 25 Sep 2008 05:22:24 -0400
  Like said in my first reply to the original poster, and has been 
mentioned by others, you need to restrict the amount of oil so as not 
to fill the rocker box,. If you are sucking it down the intakes, check 
stem/guide clearance and/or fit stem seals. Again, it is very simple to 
let a piece of plexiglass into an old cover so you can actually SEE how 
much oil is getting to the top end.
Another benefit to doing this mod is that it ensures a good supply of 
oil to run down to the cam & tappets. Many of these engines suffer from 
lack of oil to the top-end & this results in heavy wear to not only the 
rocker gear, but the cam & tappets, almost always on the front most 
Having been into one or two of these engines over the last fourty 
years... I see a real benefit from doing this.
Or OTOH it may be a waste of time & $$...

-----Original Message-----
From: <>
Sent: Thu, 25 Sep 2008 1:29 am
Subject: Re: [Fot] Supplimental oil feed to head

On street cars, any time I have seen these "supplemental oil feed 
lines" used on TR3/4/6, Morgans ect... the excess oil sent to the 
cylinder head tends to end up in the combustion chamber via the intake 
valve guides. Valve guide seals on the intake help.
Modifying the back journal of the camshaft to meter oil flow to the 
head seems better than sending full and constant oil galley pressure to 
the cylinder head.
Using a chromed rocker shaft, good rocker arm bushings, good oil, and 
not using excessive valve spring pressure, should maintain the 
integrity of the valve gear.
Pat Mannion
Santa Cruz, CA

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