Im looking for a new bore gage since my old unit is only accurate to .0005" How does this unit look and how easy is this unit to read vs. other 200+ units like Mituyoyo? Keep in mind, im no professional builder so I'll only be using this mayber once a year or so whenever I help a friend rebuild a motor or one of mine.

http://cgi.ebay.com/2-6-BORE-G...l1262

 

that's the worst part of buying such precision tools. we get to use them rarely as a hobbyist yet they're so expensive.

i haven't got to use that particular tool model but i recommend something with of higher resolution like 0.00005"/.001mm such as this one. it's what i use.

it's $122+ more but worth it rather than having to probe wrong measurements and redo the block's bores, rod bores and other precised clearancing procedures. let alone the time and other materials(i.e. pistons, bearings, etc.) you'll need when going oversized in case of wrong and/or unprecised measurements.

 

Maybe pick up a nice Mitutoyo 2nd hand? If you don't have a precision ring gage then it's also a good idea to have a .0001" graduation 3"-4" micrometer to calibrate the bore guage to. Makes it easy to measure the piston and calibrate the bore guage to the piston and when you use the bore gage it reads piston to wall clearance.

You can never have too many tools.

Pirate

 

so true!

you'll need a micrometer to calibrate the bore gage's rod length before droping them into the cyl. bore.

well, at least you'll use the micrometer 5x and not only once during the whole assembly session, LOL

1 during piston skirts measurements
2 calibrating the gage's rod for cyl bore measurements
3 calibrating the gage's rod for conrod big ends measurements
4 calibrating the gage's rod for mains bore measurements
5 crank mains and rod journals measurements

 

Thanks for the info, any links to sellers of good bore gages. I've been looking at the Mituyoyo and Fowler gages.

 

Don't forget Starrett and Brown & Sharpe also other good brands

 

I have used the bore gauge you linked to. Its not bad at all, especially for the money. You wouldnt want to use it if you were actually doing the bore & hone yourself during the machining process, but it is absolutely fine for checking taper, out of round.

 

Yeah, all I want it for is to check taper, out of round, main and rod bore, so I know what size pistons and bearings to order. Then use it again after having the block machined to check clearances during reassembly.

 

all-mtr-teg, is there any 1-6" instead of the 2-6" bore gauge from ebay?

 

Good thread. I'm looking for a good bore gauge also but don't want to spend $1000 + as I am only using it for personal use.

 

as you stated if youre not building day in, day out and want a good inspection b.gage get it...for a 100 clams you would be silly if you didn't

I have the same b.gage its from a chinese brand named shars(they actually make decent tooling) except I switched out the dial indicator with a .050" movement, .0001" mitutoyo gage instead(about an extra 120$ at the stool supply store)...its all about the jewels

p.s. the only downfall is that is probably does not have carbide contact *****

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lubo_25 &raquo;</TD></TR><TR><TD CLASS="quote">as you stated if youre not building day in, day out and want a good inspection b.gage get it...for a 100 clams you would be silly if you didn't

I have the same b.gage its from a chinese brand named shars(they actually make decent tooling) except I switched out the dial indicator with a .050" movement, .0001" mitutoyo gage instead(about an extra 120$ at the stool supply store)...its all about the jewels

p.s. the only downfall is that is probably does not have carbide contact *****

</TD></TR></TABLE>

I was wondering about that, how long will it stay accurate and precise if the contact material is low grade metal and is soft or dents easily?

 

For occasional use it is fine.

 

the contact ***** are most likely 56-62 Rc which is plenty strong for occasional use as stated by contraption...dont quote me here though but there has to be aftermarket carbide contacts out there to purchase...

a very important step with using these gages properly is to slightly grease the contact points for smooth needle movement when doing roundness sweeps...jumpy needles suck

 

Thanks CC and Lubo, looks like I'll be purchasing this unit then.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all-mtr-teg &raquo;</TD></TR><TR><TD CLASS="quote">Thanks CC and Lubo, looks like I'll be purchasing this unit then.</TD></TR></TABLE>

Hey. wanted to find out what your impression of the bore gage you bought. Meet your expectations for 100.00? I'm in the market for one, however I will only be using it very minimal. I hate buying junk, but I don't need the best because I will not be assembling motors once a week.

 

For what I'm using it for, it works just fine. I just wanted a bore gauge to measure cylinder out of round so I could order the right overbore pistons. I also use it to measure rod bore and verify plastigage measurements

I got a decent digital dial caliper .0001" from harbor freight

 

Me personally, reguardless of wheather or not I will be daily using the measuring equiptment I want satification that my measurements are percise. This is to the opposite of using a micrometer to measure a brick; over kill. I think I will spend the extra 200 and stick with a mitutoyo bore gage. Goes with all measuring equiptment; get what you pay for.

 

http://www.RutlandTool.com Good Deals

Mitutoyo

Nothing Compares especially in small graduations!

you might wanna try a digital one! easier to read! lol

 

The best online store that I have seen so far that sells mitutoyo is
http://www.use-enco.com

 

Question about graduations with Bore gages: I'm able to pick-up a new Mitutoyo bore gage from someone, but my only concern is the graduation is .0005". I had my eye on the .0001" but I seen this one is available at a good price. Is this idea completely out the door since were are working with close tolerances when assembling a bottom-end?

THANKS.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93Civic_hb &raquo;</TD></TR><TR><TD CLASS="quote">Question about graduations with Bore gages: I'm able to pick-up a new Mitutoyo bore gage from someone, but my only concern is the graduation is .0005". I had my eye on the .0001" but I seen this one is available at a good price. Is this idea completely out the door since were are working with close tolerances when assembling a bottom-end?

THANKS.</TD></TR></TABLE>

Anyone?

 

I finally got my order confirmed from goodson for this one yesterday,

http://www.goodson.com/store/t...b3615

ive never gotten anything crappy from them before so I hope i like this one. its not a bad option especially for the price.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bluedlude &raquo;</TD></TR><TR><TD CLASS="quote">I finally got my order confirmed from goodson for this one yesterday,

http://www.goodson.com/store/t...b3615

ive never gotten anything crappy from them before so I hope i like this one. its not a bad option especially for the price.</TD></TR></TABLE>

Let me know how that one works out for you. Not sure how much better it is than the ebay stuff. I wonder what brand it is? Thanks...

 

they overnighted that **** to me ? I had to exchange another part and I checked yesterday to make sure that they received it and had them add the bore gauge on there. it was at my door when i got home . im going to pull my engine next week but ive got a couple blocks i can measure up real quick tonight. It looks good, kinda like the Ebay one because its in a red box. It's got a PhaseII indicator?