Author Topic: Will these guages work for cylinder bores? (Read 6564 times)

rallydiesel · « **on:** April 10, 2008, 04:35:07 pm »

I want to buy a cheap tool to measure cylinder bore for checking out junkyard blocks. I don't want to buy a block only to find that it's already at it's last overbore. I am looking at something like this:

http://www.brandsonsale.com/ht-001357.html

Do I just stick it in and then measure it with a caliper? Is there a special technique to getting the most accurate measurement?

truckinwagen · « **Reply #1 on:** April 10, 2008, 04:48:48 pm »

that paired with a micrometer.
put that in the bore and set it, then remove and measure it with a micrometer.

demolition dave · « **Reply #2 on:** April 10, 2008, 05:24:27 pm »

Same set sells at princess auto for 19.99...pg 261 of their catalog 2940716

rallydiesel · « **Reply #3 on:** April 10, 2008, 09:13:21 pm »

So you tilt it from one side to the other. The thumb screw just keeps the rods from extending, right?

burn_your_money · « **Reply #4 on:** April 10, 2008, 10:24:27 pm »

Pistons have their size stamped in the top of them. You don't need to do any measuring unless you are looking for out of round, taper etc. But if you are rebuilding it's usually not an issue.

saurkraut · « **Reply #5 on:** April 11, 2008, 10:24:56 am »

Those are bore gauges.

clbanman · « **Reply #6 on:** April 12, 2008, 01:17:30 pm »

If you don't already have a decent outside micrometer, you might save money in the long run by getting something like this:
http://www.tias.com/cgi-bin/google.fcgi/itemKey=1922823418
I would find it faster to use this as a single step measurement. You can also set it to the max you want and just use it like a GO/NO GO gauge.