[Healeys] Finding TDC

[Bob Spidell]

Sure, but go a few degrees past TDC and you're sucking water into the cylinder (might try it with oil instead of water, however).  How do you turn an engine at a steady rate--no more than a few degrees a minute--anyway?

Used to know an aircraft mechanic who liked to find TDC by putting his thumb over the spark plug hole while someone turned the prop.  The end of his thumb ended up in a cylinder (and no, the mechanic was no longer attached to it).


bs
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Bob Spidell         San Jose, CA        bspidell at comcast.net
'67 Austin-Healey 3000             '56 Austin-Healey 100M
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 -------------- Original message ----------------------
From: "Steve B. Gerow" <steveg at abrazosdata.com>
> > Bob Spidell wrote:
> > 
> > Sounds like a great way to suck water into the cylinder.
> > 
> 
> Haven't done it but can imagine it to be very accurate in that on the up
> stroke bubbles would appear in the jar and would stop as soon as TDC was
> reached. If you had a thin transparent tube at the end in the jar, TDC would
> be when the last bubble left and water was just ready to go up the tube.
> 
> -- 
> Steve Gerow
> Pasadena CA
> 59 BN6