Robin
Everything I have read states that removing the lobe should increase
flow. You really can not determine if there is a difference unless you have
the heads flow tested in steps as that lobe is removed. I don't have any
flow charts for heads vs. their casting number.
My thoughts are that unless you are building an all out race engine
that removing the lobes is probably a waste of money. I'm also no expert
on this subject so the machine shop should be best qualified here.
Ron Fraser
-----Original Message-----
From: RObin Young [mailto:robin02@mindspring.com]
Sent: Friday, January 28, 2011 1:22 PM
To: rfraser@bluefrog.com; tigers@autox.team.net
Subject: RE: [Tigers] More cubes for Tiger
Robin
This was early smog control. Ford used the thermactor emission
control system or T/E. An air pump was used to pump air into each exhaust
port. Later heads have an internal passage for the air.
Ron Fraser
Thank you Ron; Is it then advisable to remove the lob from the heads when
the heads are machined. I added the hardened seats, screw in studs and
completely ported the heads. Was removing the lob the right thing to do for
efficiency and power? RObin
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