Yes, we did (put on a rear crank seal). Why would that cause upward pulsing?
The crankcase ventilator--think that's what I'm calling the road draft
tube--has very little pulsing pressure, which doesn't seem to change much when
we remove/replace the oil filler cap. I'm pretty sure the tube is clear, but
we'll check.
Thanks for the reply.
Bob
--------------------------------
Bob Spidell - San Jose, CA
----- Original Message -----
From: "Alan Seigrist" <healey.nut at gmail.com>
To: "Bob Spidell" <bspidell at comcast.net>, "healeys" <healeys at
autox.team.net>
Sent: Saturday, June 25, 2011 9:13:17 PM
Subject: Re: [Healeys] Question
Did you put on a rear crank seal? If so then crank case pressure will
probably vent upwards. What about the crankcase ventilator on the
side of the motor, is it pulsing too?
On 6/26/11, Bob Spidell <bspidell at comcast.net> wrote:
> After bragging about our 100M's compression numbers I have a concern. We
> seem to be getting a lot of pulsed pressure in the valve cover, as felt at
> the oil filler hole. There is very little pressure at the end of the road
> draft tube. Given we have good compression, so, theoretically shouldn't have
> a lot of blow-by, what could cause pressure in the valve cover? The engine
> was totally rebuilt, and I believe we cleaned out the road draft tube but
> don't remember for sure (we were otherwise pretty careful).
>
> All hints, ideas, even knowledge welcome.
>
> TIA,
> Bob
>
> --------------------------------
> Bob Spidell - San Jose, CA
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