I've seen that a lot.. but it's flawed.. if all read 50psi dead one, I'm fine? No... so at what point is it fine? 100psi? 120? 180?
This isn't a Miata question, but an LT1 SBC question.. but it applies to
everything. If you are looking at a motor (any) how do you know what the
normal reading ought to be? Mathematically I would think it's CR x 14.7,
but that comes out very low...
Wallyman
"Keith Tanner"
<[EMAIL PROTECTED]>
To
10/27/2008 04:06 PM <[EMAIL PROTECTED]>,
<[email protected]>
cc
Subject
RE: NMC - How to figure
"perfect" compression for a
compression check?
The easiest thing to do is check for consistency. If all four are close,
that's a good sign.
Keith Tanner
Flyin' Miata
[EMAIL PROTECTED]
http://www.flyinmiata.com
1-800-FLY-MX5s (orders)
1-970-464-5600 (tech)
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Monday, October 27, 2008 1:15 PM
To: [email protected]
Subject: NMC - How to figure "perfect" compression for a compression
check?
Ok, so if a guy wanted to figure out what the "perfect" lossless
compression measurement is on a motor, how does one go about it? i.e.
somebody tells you to "Do a compression check"... you say "ok, what values
dictate good?".. they respond back with some arbitrary number somewhere in
the high 100's.. and that's my question: Every motor should have an ideal
reading, how do you figure that out?
I assume you deal with bore/stroke/compression ratio/head gasket
thickness/domed-dished-flat top piston and chamber size and through some
magical formula you get a reading of xxx psi is possible? Google is
letting me down on this one...
Wallyman
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