compression test

[69jeepcj]

So I decided to do a compression test yesterday on the 327, (10:1 compression if it matters). I have never done one before so im looking to you guys for advice on the numbers. As I understand it, more than a 30% fluctuation between cylinders is telling you its getting wore out and needs a rebuild, or valve job? as I have heard most common compression loss is a valve not sealing?
I didn't get to complete the test as my gauge broke, getting a new one and will finish the test. This is what I have so far.
D is dry test, W is wet.

cylinder
1- D 100
W 135

2 no test

3 D 130
W 155

4 no test

5 D 100
W 125

6 no test

7 D 120
W gauge broke

8 no test
Im not liking the numbers im seeing.. What do you guys think of them? ill get a new gauge and finish the test asap.

 

[superj]

i believe its 10 or 15% is the variance. you have one cylinder that is a bit above the others, so far. wait until your replacement gage is there and check everything again but i would not be super worried yet

 

[69jeepcj]

thanks man , makes me feel a little better. let you know when the rest are done.