Got a new compression gauge and tested a few saws

[RED-85-Z51]

You can have all the compression in the world, but if your port timing is crap you wont see the power.

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[RED-85-Z51]

Build a car engine...do you measure power with a compression gauge or a dyno, or a trip to the strip?

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[old guy]

I'm done with this it's gittin rediculous

 

[KASH]

The reason Briggs and other 4cycle companies dont publish compression values is the fact the motors have built in compression release,
Kash

 

[RED-85-Z51]

The reason Briggs and other 4cycle companies dont publish compression values is the fact the motors have built in compression release,
Kash

Yes, and valve lash can cause a wild variance in testing.

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[Okie]

Where can you buy them?

Search this site for some threads about the special schrader valves for compression testers used on small cc engines, part numbers and prices.
You can get ripped off if not careful.

Here is one thread about such, building your own, special valves, etc.
Note that I made some of them from the long stem type automotive inner tube schraders by cutting the spring. I calibrated them by using the special good schrader that read correctly.
If your low pressure schrader starts reading incorrectly or leaking back just try cleaning it. If I see a chainsaw or engine indicating low compression I have another spare complete compression tester that I use to confirm such before flogging into the engine.

http://www.arboristsite.com/community/threads/compression-tester-issues.310133/

 

[Kenskip1]

I happen to have the Lisle compression gauge. It works as designed.. BTW, this is for my Stihl 041

 

[deye223]

I happen to have the Lisle compression gauge. It works as designed.. BTW, this is for my Stihl 041View attachment 872529

Me too