HFS(R) Dial Indicator Bore Gage Set - 0.0005" Graduation (2"-6" Range)

I was working on a over heating problem on a John Deere 40 Utility tractor. After assessing the problem I realized I needed to tear down the motor and make some repairs. The problem was the head gasket and a cracked edge of one of the pistons. I removed not only the head but the pistons too and then cleaned up all the pieces to be sure I was making all the right moves. I purchased a honing tool and honed the cylinder walls to removed any build up of any kind in the cylinder. After watching some YouTube videos I realized that I should take some measurements of the cylinder to make sure the cylinder was round and not egg shaped. I went to Amazon looking for a dial cylinder bore gauge which I ordered and received in two days. Following the directions of the gauge I assembled it, calibrated it and then went to the tractor and took my measurements of the two cylinders on my tractor. The gauge was easy to use and in a matter of minutes I had verified that the tractor was ready for the repair parts. I would recommend a first time buyer of this type of tool should watch YouTube first because there are several great videos on different types and brands of this type of gauge and their explanations were very helpful.

I pulled it out of the box, installed the 4 inch pin, checked my mic against my gauge block, found max travel to be 4.0270", zeroed the bore gauge at 4.0000. This gauge tells me my bores are 4.001, round with no taper, no marks left in the bore from checking. Very happy with the purchase, reringing the motor as I type this. 40 bucks well spent. To my engine building bothers and sisters, get one, you will not be disappointed. You just need a micrometer/precision calipers and a gauge block to set it up correctly. Look up a Zeiko 8" caliper and maybe a 123 block with good reviews if you don't already have them or something equivalent.

It will get you through your measurements... non Racing Engine here.

The tool is a great price value it is just when you have to buy them more than once because people have sticky fingers and no consideration that you had to buy them to do your job if you need them ask to borrow them you don't need to steal them you didnt

Little hard to set up properly. I formerly worked as a mechanic at an engine machine shop, so we had fixtures to set bore gauges up easily. It is a bit rough using an inside mike to set it up properly. That said it make checking bores much easier then using snap gauges. And for home use it works just fine.

One bad review usually gets me paranoid and I was pretty scared of this one even though the price isn't that bad. Ended up being a good tool. I'm no machinist but it did the job just fine for measuring the bores of a 5.3 ls engine I am working on.

Does a good job at a reasonable price. Very accurate.

If you have a large set of micrometers to set this with and you use it with care, I think this bore gauge is a great value for the money. Use it gently, ie: don't let it snap out against the stop when you pull it out of the bore. Worked great for checking my cylinder bores.