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sparkplug whistle

I

IanC

Well-known Member
Was going to time the repaired mag for the Farmall H today. With no helper I couldn't turn the crank and stick my finger in No.1 hole to feel compression. I recall reading someplace (I think on here)about a device you screwed into the sparkplug hole and it whistled when the cylinder came up on compression. I know there are probably 500 other ways to do it, but this came into my head as a real simple solution.
 
as long as you have compression to toot your whistle. lol. the other way is to watch #4 cyl. valves , when they are on the rock #1 is on compression. but thats if you have the valve cover off when adjusting valves. wont hurt to adjust valves anyhow if not done lately.
 
What I did once when I was in a similar situation, I found a small rubber plug that fit snugly in the sparkplug hole. When I cranked it, that plug shot off like a cap gun and I found #1 TDC. What I didn't ever find was that plug...

Donovan from Wisconsin
 
A chunk of garden hose "screwed" into the hole and aimed forward with a penny taped to the end so it will flap when hit by the compression wind is readily available! Jim
 
The whistle is a great idea if you have one or know a neighbor that does.

However if you don't have access to one, it turns a 2-minute job into a day searching online, plus another 1-2 weeks waiting on delivery...

Just put a spark plug in the hole 1-2 threads. You'll hear the air rushing out on the compression stroke.
 
Not germain to a wh istle , my grandfather had this device that he used to pump-up his tractor tires by screwing this device into what would be the sparkplug hole. I think the tractor was and Oliver 60 Diesel' could you possibly shed any light on this?
 
(quoted from post at 19:32:50 12/11/12) Not germain to a wh istle , my grandfather had this device that he used to pump-up his tractor tires by screwing this device into what would be the sparkplug hole. I think the tractor was and Oliver 60 Diesel' could you possibly shed any light on this?
Click to expand...

Dunno about a diesel doing it. Do know my Farmall C manual includes instructions on using a pneamatic tire pump that screwed into a spark plug hole. Says specifically though it has to be used with a carbuerated engine.
 
Thanks for all the replies. I'm going to try several. Somewhere in the garage at the farm I've got one of those sparkplug inflator deals too. I almost think it was marked Sears. If I remember to look for it this weekend I will repost.
 
(quoted from post at 03:04:20 12/12/12)
(quoted from post at 19:32:50 12/11/12) Not germain to a wh istle , my grandfather had this device that he used to pump-up his tractor tires by screwing this device into what would be the sparkplug hole. I think the tractor was and Oliver 60 Diesel' could you possibly shed any light on this?
Click to expand...

Dunno about a diesel doing it. Do know my Farmall C manual includes instructions on using a pneamatic tire pump that screwed into a spark plug hole. Says specifically though it has to be used with a carbuerated engine.
Click to expand...


That's an ENGINAIR. pretty neat; it doesn't put cylinder gasses in your tire. It has a small pump in the fitting that goes in the spark plug hole. There's one on E-bay right now. My Grandad had one of these and it was very handy as back in the fifties, air compressors weren't as portable as they are now.
 
I usually just roll up a rag or paper towel real tight and put in the spark plug hole. If it halfway seals it will pop out at TDC or somewhere close enough to time an engine. I've never done it with a tractor magneto, but I've done it lots of times putting distributors in truck motors.
 
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