Subject: RE: Diagnosis
Author: Kevin Graf
Date: Jun 26, 2001, 8:10 AM
Post ID: 1707265472
Pull the head. Your right if the compression rings are good it won't leak
down.
I know the compression rings are compression rings, and the oil ring has
scraper rings, ect., but if it wouldn't leak down past the first rings, how
would oil get up past the compression rings. I guess some would work past if
the oil ring was shot, but enough to notice?
Just something I never really thought of and thought I'd throw it out there.
Kev
-----Original Message-----
From: Pete Scheer [mailto:plsc-@tycoelectronics.com]
Sent: Tuesday, June 26, 2001 10:58 AM
To: 'Loopfram-@topica.com'
Subject: RE: Diagnosis
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Well Yes Ive been chewing on this and it seems if you hear air leaking thru
the carb or exhaust that would be valves and I guess I would open the
filler plug and put a finger over it to see about leakage into the crankcase
Seems tho that if I have good compression then I should not have leakage
down into the crankcase since my compression rings are good. But I have no
way to check on the oil ring condition. ( I am thinking as I am writing,
can you tell?)
IN a leakdown test you do it with both valves closed. If it leaks into the
crankcase then compression rings are bad. If it leaks into the carb or
exhaust then the valves are not seating
. I don't think that you can tell the condition of the guides that way.
The more I think about this, the more I think it is either an intake valve
guide or poorly working oil rings.
I don't think oil would leak in thru the exhaust since there is always
pressure blowing out of the cylinder.
I think I'll just pull the head off and measure the valve stems and guides
and see what I get.
Thanks for listening to me ramble on. and tell me if I am off base
anywhere. I am learning as I go here.
Pete
-----Original Message-----
From: Kevin Graf [mailto:kgr-@midwestpension.com]
Sent: Tuesday, June 26, 2001 9:34 AM
To: Loopfram-@topica.com
Subject: RE: Diagnosis
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Acually if an air leak is through the carbs of exhaust, You'd have valve
problems.
Kev
Kevin Graf wrote:
| The way I see it is ... Am I correct to assume that if you hear an air leak through the breather ,the heads would be a lesser possibility and vice versa? Kev Pete Scheer wrote:
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