[Healeys] Question

[Bob Spidell]

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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