B B B B Do you have the head off?B Do you care about taper in the cylinders?B Or are you just trying to get a nominal size as it trying to tell a 1300 liner from a 1600?B Or to see if a 1300 has a 1400 kit? B B B B If the head is off and you do not care about taper in the liner, a plain old vernier caliper will do just fine.B Preferably you have a digital one that switches from inches to metric. B B B B Just put the inside measuring legs down in the bore and feel the tension on the caliper until you have the maximum bore.B B Read the result with the caliper still in place in theB cylinder. B B B When I worked the SCCA Run Offs in the production category, that is the way we did it.B If the measurement was in compliance with the spec book, that was good enough.B If the measurement indicated an overly large bore and we were going to "Write Paper" reportingB a car thatB appeared toB out of compliance, B we might use other instruments to comfirm our findings.B But the vernier caliper was very accurate for most measurements. B B B We also measured stroke with the opposite end of the caliper - the end that comes out to measure depth.
B B B B I remember one competitor questioning our use of such a simple caliper.B I told him that if he did not like our results, then we would so something different.B He was happy when we approved his engine. B B B B SCCA also had all sorts of gauges.B B If the head was still on the car, they had a snap gauge that went down the spark plug hole and expanded to measure the bore.B It was then locked, removed from the cylinder and measured. B B B B The accuracy ofB any measurements is more one of feel than anything else. Ciao Russ Neely B ________________________________ From: "Watry, Andrew (LNG-SFR)" <[email protected]> To: [email protected]; [email protected]; [email protected] Sent: Tue, February 23, 2010 2:31:15 PM Subject: [giuliasuper] tool to measure engine bore? B What kind of measuring device do folks use for measuring the bore of liners? There are inside barrel mics, sprung "T" mics that you spring out and lock, then measure with an outside mic, bore dial indicators, all kinds of stuff. Not sure what's best. Thanks for any advice. Andrew [Non-text portions of this message have been removed] __._,_.___ Reply to sender | Reply to group Messages in this topic (1) Recent Activity: Visit Your Group Start a New Topic Switch to: Text-Only, Daily Digest b" Unsubscribe b" Terms of Use . __,_._,___ -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
