im gonna building motors for a local shop here in town and want to invest in a good micrometer to measure engine bearings.... im really particular when it comes to assembling motors and like to have proper tools (plastiguage is good but not enough) and i was wondering if anyone knew of a decent ones or any...

i remeber reading that ones used to measure bearing have a curved piece rather straight like normal mic's....pic and links to good sources would be greatly appreciated...

thanks
will

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by W C L &raquo;</TD></TR><TR><TD CLASS="quote">(plastiguage is good but not enough) </TD></TR></TABLE>
YES! so many people think plastiqauge is just the easiest and best thing ever. i hate that ****.

and look for anything that is aerospace quality, those are gonna be real precision insturments.

 

**** man, I work at a GM production shop, ******* micrometers laying all over the place from 0"-1" to like 3 1/2"

Digital and everything, I just borrowed a few when assembling my motor and taking crank measurements and such, had for a good 2 weeks, brought em back and knowone knew.

There dam expensive I think though

 

http://www.use-enco.com

Here are the Mitutoyo part numbers for the measuring tools I'm using now:

115-253 = 0"-1" Ball Micrometer [for measuring bearing thicknesses]
103-136 = 1"-2" Micrometer [for measuring crank rod journals]
103-217 = 2"-3" Micrometer [for measuring crank main journals]
103-218 = 3"-4" Micrometer [for measuring piston skirt diameters]

511-164 = 1.4"-2.5" Dial Bore Gauge [for measuring rod big-end ID and main bore ID]
511-166 = 2"-6" Dial Bore Gauge [for measuring piston to cylinder wall clearance/diameter, out-of-roundness, and taper]

Other tools you'll need:
600-0099 = micrometer stand
610-5026 = 0"-6" dial or digital caliper
505-1848 = 0"-1" dial indicator w/ magnetic indicator stand
605-4205 = 0"-2" dial indicator (with lug-back preferred]

If you want the digital stuff, be prepared to pay even more out the ***. But, at least they're easier/quicker to read and zero out.
543-252B = 1/2" travel digital indicator [for use with your dial bore gauge sets; features .00005" precision] - it's a good thing you'll only have to buy one to use with all your bore gauge kits

543-462B = 0"-2" travel digital indicator [for degreeing cams; features .00005" precision]
- You can get away with using the Enco 0"-2" listed above...no real need to splurge here.

Mitutoyo 293-722-30 = 1"-2" digital mic [.00005" precision]
Mitutoyo 293-723-30 = 2"-3" digital mic [.00005" precision]
Mitutoyo 293-724-30 = 3"-4" digital mic [.00005" precision]

Starrett digital mic part no's since the Mitutoyo digital mics are discontinued:
733XFL-1 = 0"-1" digital mic [.00005" precision]
733XFLZ-2 = 1"-2" digital mic [.00005" precision]
733XFLZ-3 = 2"-3" digital mic [.00005" precision]
No Starrett 3"-4" digital micrometer listed....I guess you'll have to use a regular 3"-4" mic.

You'll probably also want a few tools from Summit Racing too, but I'll leave it up to you to decide:
PRO-66774 = Proform Bench Top Spring Tester
PRO-66769 = Proform Bench Rod Vise (I'm not sure how well these things work....but at least you can return it w/o penalty if you don't like it)
ARP-100-9941 = ARP Rod Bolt Stretch Gauge
TAV-08050 = Tavia Cylinder Bore Indicator Stand (spans 4" bore)
SUM-G1056 = Camshaft Degree Kit (includes 1" dial indicator so that you don't have to buy the other one too)


Modified by IN VTEC at 1:59 AM 12/25/2004