Is there any down side to using one of these:
 

I picked up one of these whistles. I though it would be fun to use to let the pedestrians know I was coming when entering a show field. But not if it will cause problems with a good running engine. I am a little worried about moving the spark plug an inch above the combustion chamber and the fact that the adapter is made of brass (strong enough?). Any thoughts.?

Re: Is there any down side to using one of these:
 

I'd be more inclined to plug it into another (different) vacuum source, such as the wiper port on the intake manifold.

Re: Is there any down side to using one of these:
 

Its not a vacuum whistle.

Re: Is there any down side to using one of these:
 

I would try and plug it into the exhaust system. I think the plug will be firing combustion gas flames out of the whistle. JMHO

Re: Is there any down side to using one of these:
 

It is an explosion whistle. It will not work on a vacuum line or exhaust pipe.

They are loud and will draw attention. Had one on my "A" for several years until the valve stuck partly open, not enough to make the whistle work or hear but enough to lower the compression. Over time the babbitt got pounded out of the rod and I had to replace the rod. If you use it occasionally for short blasts and check it periodically to make sure the valve seats and does not leak it should work well for you.

I do not use it any longer.

Re: Is there any down side to using one of these:
 

Sounds like it may be more trouble than it 's worth. I might just install it for show day and keep it on the shelf otherwise.

Re: Is there any down side to using one of these:
 

Used one for years. Works fine, no issues.

Re: Is there any down side to using one of these:
 

>Over time the babbitt got pounded out of the rod and I had to replace the rod. If you use occasionally for short blasts and check it periodically to make sure the valve seats and does not leak it should work well for you.

>Used one for years. Works fine, no issues.

OK now I have two conflicting data points. Do we have a tie breaker?

Re: Is there any down side to using one of these:
 

Yeah, I'll be one of the ones that breaks the tie. Some of the comments above are utter nonsense! Why people post such comments without having true knowledge about what they speak of is beyond me. In other words, if you don't know, ...then kindly don't answer!! :mad: Those explosion whistles will not hurt a thing ...except for dropping the power of the engine by about 25% for the time you have the wire/string pulled.

And to dispute the comment about beating the Babbitt out of a rod, it would actually be the opposite because when the whistle is being operated, the explosion force in that cylinder is less because it is leaking compression out the whistle orifice.

Re: Is there any down side to using one of these:
 

I had one on my Model T, I like the sound but decided to just put it on for parades as the valve leaked a little. It's an easy job, just like changing a spark plug. Then run a wire through any handy hole in the fire wall.

Re: Is there any down side to using one of these:
 

Wow Brent you actually agreed with me ;):o:)

Re: Is there any down side to using one of these:
 

Times 2 on all points

Re: Is there any down side to using one of these:
 

Tie broken, Thanks :D

Re: Is there any down side to using one of these:
 

Brent is right! I ran one for years and then it started to leak and I took it off. Nice for parades or if you want to announce yourself.

Re: Is there any down side to using one of these:
 

I had one on, for a long time, and never had any problems.
They sure announce your arrival !
MIKE :) (mikeburch)