Re: Engine Deck Height Tool - What are you using ?
[Re: vinnyd76]
#2627050
02/28/19 12:32 PM
02/28/19 12:32 PM
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Joined: Jan 2012
Posts: 2,678 Stuttgart, Arkansas
rickseeman
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Posts: 2,678
Stuttgart, Arkansas
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You can use an ordinary outside micrometer with a ball attachment on the end. Imports can be bought cheap or on ebay. It won't get everywhere you want but it will give you an idea.
BHJ used to sell a dial caliper with a radiused attachment on the fixed jaw that worked but they were pricy.
2011 Drag Pak Challenger
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Re: Engine Deck Height Tool - What are you using ?
[Re: vinnyd76]
#2627251
02/28/19 09:43 PM
02/28/19 09:43 PM
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Joined: Jan 2003
Posts: 31,076 Oregon
AndyF
I Win
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I Win
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Posts: 31,076
Oregon
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Curious to see what the Mopar community is using to perform a simple engine block deck height check. Outside of taking a block to an engine shop, what measuring device are you using to check engine deck heights? Depends how accurate of a measurement you want. If you want a good measurement you need a large outside micrometer. If you don't have one of those you can use a machinist scale and read it within 0.010 of an inch depending on how good your eyes are.
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Re: Engine Deck Height Tool - What are you using ?
[Re: 6PakBee]
#2627255
02/28/19 09:49 PM
02/28/19 09:49 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
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About to go away
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Posts: 14,889
up yours
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As do I, but don't know if the OP is asking how to determine a block's deck height from the crank centerline, or getting an accurate measurement of how far below (or above) the deck the pistons are at TDC. Don;t think the OP knows either
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Engine Deck Height Tool - What are you using ?
[Re: Supercuda]
#2627380
03/01/19 02:41 AM
03/01/19 02:41 AM
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Joined: Feb 2005
Posts: 4,320 Prospect, PA
BSB67
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Prospect, PA
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As do I, but don't know if the OP is asking how to determine a block's deck height from the crank centerline, or getting an accurate measurement of how far below (or above) the deck the pistons are at TDC. Don;t think the OP knows either Certainly the question could be more clear
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Re: Engine Deck Height Tool - What are you using ?
[Re: 451Mopar]
#2627533
03/01/19 02:34 PM
03/01/19 02:34 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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12" dial caliper from main bearing bore to deck, then add 1/2 the bearing bore diameter. Got any feel for the accuracy of that approach? It's obviously correct mathematically, but how about getting consistent & usable measurements? Not looking to bash at all; I have a machined block that already needed some work redone by a different shop. One of questions I have is the deck height, especially if I need to order new pistons for the build.
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Re: Engine Deck Height Tool - What are you using ?
[Re: AndyF]
#2627633
03/01/19 06:40 PM
03/01/19 06:40 PM
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Joined: Jan 2003
Posts: 10,758 North Dakota
6PakBee
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I Live Here
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Posts: 10,758
North Dakota
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A dial caliper is fine for determining if a block has already been decked. But for something more precise, installing the entire rotating/reciprocating assembly and checking every piston not only gives you a figure for the deck height but insight into how uniform the final rod/piston length is for each cylinder. I mean in the end, what are you really trying to accomplish, a certain deck height (crank centerline to block face) or a desired piston height (piston crown to block face)?
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
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Re: Engine Deck Height Tool - What are you using ?
[Re: 6PakBee]
#2627659
03/01/19 08:37 PM
03/01/19 08:37 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I'm assuming you want piston to deck distance for (A) a SCR number and (B) possibly achieving quench (.040). As said I would FIRST mockup the short block & measure all of em (as said the deck bridge/micrometer works OK) or at least the corners which will tell you how much to mill the block & you can potentially swap rods around if that will get em all more even or alter the rod C to C lengths slightly when you have them rebuilt & that is much more critical IF you are desireing quench as opposed to just getting a reasonable SCR number, then dissassemble it all for final balancing. Alot of work but when the long block is right it is right & with the right cam/intake/carb/converter & ign tuning & some spot on tuning you will have the BEST combo that YOU are capable of producing.
live every 24 hour block of time like it's your last day on earth
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Re: Engine Deck Height Tool - What are you using ?
[Re: AndyF]
#2627977
03/02/19 05:18 PM
03/02/19 05:18 PM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
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Aurora, Colorado
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A 12" dial caliper would get you close but not precise due to the curve on the main bearing housing. But it should be within 0.005 of the actual number if you're careful. The number you get will be bigger than the real number. Like Andy said. You want to use the outer edge of the caliper that is narrowed down and then find the minimum reading so you know your on the bearing bore part that is closest to the cylinder / square to the deck. That is the hardest part. I have a micrometer and dial bore gauge that I can use to measure the bearing bore, but usually I just look up the bearing outside diameter spec. I just use the measurement to check if the block has been cut and of the four corners are the same height. If I want the block decked for a specific piston to deck clearance, I just tell the machine shop and let then set it up.
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