I was thinking that the head and crankcase were connected enough that the
pressure was equalized. Through the pushrod passages?
Bill Beecher
'58 TR-3A TS/30766 L (rolling restoration) www.triumphowners.com/1566
"A Triumph is man's best friend, it always comes when it is called...of
course, some times it is difficult to make it go"
-----Original Message-----
From: triumphs-bounces@autox.team.net
[mailto:triumphs-bounces@autox.team.net] On Behalf Of Brian Jones
Sent: Wednesday, April 07, 2010 11:56 AM
To: triumphs@autox.team.net
Subject: Re: [TR] Triumphs Digest, Vol 4, Issue 138
From: <wbeech@flash.net>
Subject: Re: [TR] Rear oil seal leak
To: <dave1massey@cs.com>, <david.brister@wanadoo.fr>,
<triumphs@autox.team.net>
Don't you have a vented oil filler cap on your TR4? If there is excessive
crankcase pressure, this should handle it easily without have to add the
vent from the TR3, which can be another source of oil leaks unto itself.
Regards,
Bill Beecher
My TR4 has both the breather cap and the block vent. I thought that while
the cap allows pressure to escape from the head, the position of the vent
tube 'out in the wind' was to draw gases from the crankcase through some
sort of pressure drop at the end of the tube as the car moves. I may be
wrong.
Brian
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