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Measuring deck height? #863306
11/25/10 05:54 AM
11/25/10 05:54 AM
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polkat Offline OP
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When measuring deck height (center of crank to top of block), without special tools, what other kinds of measuring tools can be used? A yard stick is, of course, not very accurate, but what else can I use that won't cost me a fortune?

Re: Measuring deck height? [Re: polkat] #863307
11/25/10 06:29 AM
11/25/10 06:29 AM
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I've gotten decent results with a 12" dial caliper.... Measure the height from the deck to the crank bore, add half the bearing bore diameter & you have a good number..

Re: Measuring deck height? [Re: polkat] #863308
11/25/10 10:28 AM
11/25/10 10:28 AM
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BSB67 Offline
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What will you be using the measurement for? I do what 1 Wild RT does for ordering or verifying what is needed for piston CH. It is surprisingly accurate but would not use it for determining final machining.

Re: Measuring deck height? [Re: polkat] #863309
11/25/10 10:44 AM
11/25/10 10:44 AM
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Quote:

A yard stick is, of course, not very accurate,





that is classic ... a yard stick

Re: Measuring deck height? [Re: JohnRR] #863310
11/25/10 10:54 AM
11/25/10 10:54 AM
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Quote:

Quote:

A yard stick is, of course, not very accurate,





that is classic ... a yard stick





Re: Measuring deck height? [Re: polkat] #863311
11/25/10 11:00 AM
11/25/10 11:00 AM
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Take it to a machine shop

Re: Measuring deck height? [Re: Challenger 1] #863312
11/25/10 11:00 AM
11/25/10 11:00 AM
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RapidRobert Offline
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May I ask what your wanting to accomplish? You could use the nominal deck height ie 10.725" for a RB and use that to decide if the pistons you have in mind will work then as said mockup & see how much you need to machine to get p/v clearance/quench/cr where you want it


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Re: Measuring deck height? [Re: RapidRobert] #863313
11/25/10 12:16 PM
11/25/10 12:16 PM
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Quote:

You could use the nominal deck height ie 10.725" for a RB and use that to decide if the pistons you have in mind will work




Only if you know the deck has not been cut.

Re: Measuring deck height? [Re: BSB67] #863314
11/25/10 05:00 PM
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polkat Offline OP
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Yes, the method 1 WILD RT suggested is what I have in mind. My reason for doing it is to determine if the block is square and if it has been cut. The 12" micrometer mentioned would be perfect, but I haven't been able to find one that size. I noticed that Harbor Freight has a 24" one, but it only measures in fractions or millimeters (no dial). I suppose I could convert a millimeter reading.

Re: Measuring deck height? [Re: polkat] #863315
11/25/10 05:46 PM
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I don't think anyone mentioned a micrometer.

Re: Measuring deck height? [Re: BSB67] #863316
11/25/10 06:16 PM
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Quote:

I don't think anyone mentioned a micrometer.




That would work... If you have a 10-11" ball end micrometer...

Re: Measuring deck height? [Re: 1_WILD_RT] #863317
11/26/10 12:44 AM
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RapidRobert Offline
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you can set a round rod in the bore and mike off of that then subtract the rods diameter then add 1/2 of the bore dia. As said comes down to the accuracy of your caliper type. When MP machines the decks it leaves straight machining marks whereas machine shop milling machines make circular marks. this might help you determine if yours have been cut


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Re: Measuring deck height? [Re: 1_WILD_RT] #863318
11/27/10 05:04 PM
11/27/10 05:04 PM
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Quote:

I've gotten decent results with a 12" dial caliper.... Measure the height from the deck to the crank bore, add half the bearing bore diameter & you have a good number..







I originally bought my 12" dial caliper for measuring brake drums but I've found other uses for it. It's nice to be able to check whether a deck is stock or hacked to death without hauling it to a shop and bothering someone who has better things to do.
[url=http://lmgtfy.com/?q=12"+dial+caliper]find one here[/url]

Re: Measuring deck height? [Re: 1_WILD_RT] #863319
11/29/10 01:57 AM
11/29/10 01:57 AM
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Quote:

I've gotten decent results with a 12" dial caliper.... Measure the height from the deck to the crank bore, add half the bearing bore diameter & you have a good number..




Floyd Lippencott IV






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