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1928 Service Manual Tip #51547 05/15/02 05:08 PM
Joined: Dec 2001 Posts: 217 San Jose, CA RustyFender OP Backyard Mechanic
OP RustyFender Backyard Mechanic Joined: Dec 2001 Posts: 217 San Jose, CA	Anyone try this tip? "A method of determining the speed of the engine when idling is to grasp one of the valve lifters between the the thumb and finger and count the number of times the valve lifts in twelve seconds. Multiply this number by 10 and the result is the number of revolutions the engine is turning over per minute." Much better than my old method of grabbing the spark plug wire and counting the number of times I get shocked over 12 seconds.

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Re: 1928 Service Manual Tip #51548 05/15/02 05:58 PM
Joined: Nov 2001 Posts: 5,906 Likes: 8 Issaquah, WA Bill Barker Former ChatMaster ChatMaster - 5,000
Bill Barker Former ChatMaster ChatMaster - 5,000 Joined: Nov 2001 Posts: 5,906 Likes: 8 Issaquah, WA	Yes, this sounds like a great poor man's way of figuring out the revs.... but I sure would like to watch you do it the older way!!! Bill Barker Previous VCCA CHAT Administrator (VCCA Member: 9802)

Re: 1928 Service Manual Tip #51549 05/15/02 07:29 PM
Joined: Feb 2002 Posts: 1,178 Helena Mt glyn ChatMaster - 1,000
glyn ChatMaster - 1,000 Joined: Feb 2002 Posts: 1,178 Helena Mt	In 1950 I worked with a guy in a service station that just loved to share this information with any one walking by, he would just grab a spark plug wire grab you and let you count the rpm for him. No rubber boots then!

Re: 1928 Service Manual Tip #51550 05/15/02 08:00 PM
Joined: Mar 2002 Posts: 39 Canberra, Australia John McFarlane Shade Tree Mechanic
John McFarlane Shade Tree Mechanic Joined: Mar 2002 Posts: 39 Canberra, Australia	Don't be such a woossie. The ABSOLUTELY best way to determine rpm is to shove your arm into the radiator fan, count the number of seconds before you black out, then have someone else multiply that time by the time (in months) that it takes you to recover. I'm told it works all the time.

Re: 1928 Service Manual Tip #51551 05/15/02 08:32 PM
Joined: Nov 2001 Posts: 29,863 Eagle Point, Oregon Junkyard Dog Tech Advisor ChatMaster - 25,000
Junkyard Dog Tech Advisor ChatMaster - 25,000 Joined: Nov 2001 Posts: 29,863 Eagle Point, Oregon	You guys have it all wrong! Absolutely....the very best way to figure the RPM is to have Elvira sit on the valve cover while the engine is running, and count the number of times her headlights bounce up and down in 12 seconds, multiply that by two and ya got it! That is....if you don't lose count in the meantime!!! Anyway, it is a lot more fun for all of those involved instead of the other methods!! :eek: The Mangy Old Mutt "If It's Not Junk.....It's Not Treasure!"

Re: 1928 Service Manual Tip #51552 05/15/02 09:16 PM
Joined: Mar 2002 Posts: 84 134 enger cutoff belt montana ... n j horst Shade Tree Mechanic
n j horst Shade Tree Mechanic Joined: Mar 2002 Posts: 84 134 enger cutoff belt montana ...	HEY J.Y.D. WOULD YOU HELP ME TIME MY CADILLAC IT IS A CHEVY AND IT DOES RUN A LITTLE ROUGH! P.S ITS GOT A V-16. I PROMISE TOO LET GO OF THE LEASH WHEN IT'S TIME! N J HORST

Re: 1928 Service Manual Tip #51553 05/16/02 09:59 AM
Joined: Nov 2001 Posts: 29,863 Eagle Point, Oregon Junkyard Dog Tech Advisor ChatMaster - 25,000
Junkyard Dog Tech Advisor ChatMaster - 25,000 Joined: Nov 2001 Posts: 29,863 Eagle Point, Oregon	Sure! Elvira would love it, and with 16 cylinders you have to multiply by 5 instead of by 2! :eek: :eek: :eek: The Mangy Old Mutt "If It's Not Junk.....It's Not Treasure!"

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