[Roadsters] what has happened???

[Jim Gammon]

On further consideration, I agree. My compression was never zero.
 
JimG

--- On Tue, 9/16/08, John F Sandhoff <sandhoff at csus.edu> wrote:

From: John F Sandhoff <sandhoff at csus.edu>
Subject: Re: [Roadsters] what has happened???
To: "Oliver" <sumton at sbcglobal.net>
Cc: datsun-roadsters at autox.team.net
Date: Tuesday, September 16, 2008, 2:20 AM

> tonight i checked the compression.  0, 0, 90, 120

Sorry, dude. Your head gasket is gone.
You'll find it's breached between the #1 and #2 cylinders.

Tight valves or a closed throttle will create low readings, but
zero means there's a significant hole somewhere. Not going to be
your rings, either. Could be you burned holes in both #1 and #2
pistons :-) Possible if your front carb is way lean but not likely.

It's the head gasket. Check carefully for warpage and defects on
the head itelf. If a U20 you need to check the TOP surface as
well, or you risk the camshaft. I bought a spare head for my 1200
once, for $1, after the owner managed to burn a trough into the head
between two cylinders.

-- John
     John F Sandhoff sandhoff at csus.edu  Sacramento, CA
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