Compression Tester

[MisterCinders]

I need to look into compression (78 GS750) but don't know which tool to use.

Z1 has a kit for $92

http://www.z1enterprises.com/detail.aspx?ID=1700

Sears has a kit for $30

http://www.sears.com/shc/s/p_10153_12605_00902171000P?prdNo=2&blockNo=2&blockType=G2

My local Auto Zone will rent one for a day.

Are the Sears/Auto Zone options viable for motorcycles?

I like Z1 Enterprises, but do I really need to spend 3x the dough on this item?

Thanks in advance.

[tkent02]

Any of them are fine, accuracy and precision are not important. What you want is to see that all the cylinders are within a broad range of "good", and more importantly that all of the cylinders are of similar compression. I have a HF $12 one that I use more often than the expensive Craftsman one, just because the hose length makes it easier to use. They both read exactly the same as close as I can tell.
What you need is one that comes with the correct adapter for you spark plug holes. Your 750 plugs are a very common size.
If you don't do it very often, I'd borrow the Autozone one.

[hikermikem]

Here's the one I bought one from Advance Auto a few yeras ago.

It comes with several adapters for all different plug sizes & threads.

Seems to work very well, gets used maybe once or twice a year.

[hikermikem]

Here's the one I bought one from Advance Auto a few yeras ago.

It comes with several adapters for all different plug sizes & threads.

Seems to work very well, gets used maybe once or twice a year.

http://shop.advanceautoparts.com/web...3389_T|GRP2018____

[ddaniels]

Borrow AutoZone's.