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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!usc!sdd.hp.com!hp-col!howardr
- From: howardr@col.hp.com (Howard Rebel)
- Subject: Re: Compression ratios
- Sender: news@col.hp.com (Usenet News)
- Message-ID: <1992Jul24.185534.8996@col.hp.com>
- Date: Fri, 24 Jul 1992 18:55:34 GMT
- References: <1992Jul24.171405.21854@rchland.ibm.com>
- Organization: HP Colorado Springs Division
- Lines: 27
-
- In article <1992Jul24.171405.21854@rchland.ibm.com> alter@rchland.vnet.ibm.com (Eric Alter) writes:
- >I have an '87 Monte SS (5.0L HO, stock) and was wondering if anybody knew what
- >the compression ratio was for this engine. I was also wondering if anyone new a
- >conversion from compression readings to a ratio format.
- >
- >I had my carb. rebuilt due to some extremely rough idling (actually the rough
- >idle occured after I'd taken it to the chevy dealer for a routine tune-up. it
- >went in fine and came out running awful.). The dealer did the rebuild and
- >covered it under emissions warrenty even though it appeared that the carb had
- >been tampered with (i didn't do it, honest!). The dealer said that the
- >continued rough idle could be caused by poor compression in one of the
- >cylinders. I was able to check the compression in May and found it to be
- >roughly 160 for all 8.
- >
- >Can anyone say what sort of compression ratio (formula, rough estimate) can be
- >extracted from the 160 number?
- >
- >Any suggestions as to what may still cause the rough idling?
-
- Take it to another mechanic. The chevy dealer is off the deep end.
- He messed up you car and is looking for an out. If your engine has
- even compression on all cylinders it does not matter what that
- compression is.
-
- --
- Howard Rebel hpcsos.col.hp.com
-
-