[Tigers] More cubes for Tiger

[Ron Fraser]

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 at mindspring.com]
Sent: Friday, January 28, 2011 1:22 PM
To: rfraser at bluefrog.com; tigers at 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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