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Help computing dish volume #1177505 02/13/12 01:01 AM 02/13/12 01:01 AM
Joined: Oct 2003 Posts: 3,698 NE Oklahoma V Von OP master
Von OP master V Joined: Oct 2003 Posts: 3,698 NE Oklahoma	Looking for help computing dish volume. The dish will have a radius of 1.6 inches, and approx .040 deep. Thanks for any help. 72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.

Re: Help computing dish volume [Re: Von] #1177506 02/13/12 01:32 AM 02/13/12 01:32 AM
Joined: Jul 2010 Posts: 2,091 Delray beach, Florida P Performance Only top fuel
Performance Only top fuel P Joined: Jul 2010 Posts: 2,091 Delray beach, Florida	is that a round dish with straight walls and no radius at the bottom edge? (not likely) or a D shaped dish? machine shop owner and engine builder

Re: Help computing dish volume [Re: Von] #1177507 02/13/12 01:48 AM 02/13/12 01:48 AM
Joined: Aug 2003 Posts: 43,274 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,274 Bend,OR USA	Go to the local feed store or drugsatore and buy a 50 CC syringe and measure that rascal to get it right. Maybe contacting the piston company with the piston part number may get you the exact CC of that part number Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Help computing dish volume [Re: Von] #1177508 02/13/12 02:17 AM 02/13/12 02:17 AM
Joined: Oct 2007 Posts: 4,210 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,210 New York	You're describing a shallow cylinder. The volume is the same as any other cylinder: R^2 � H � Pi, then � 16.387 to get cc from inches. 1.60" � .040" = .322", or 5.3cc Last edited by polyspheric; 02/13/12 01:59 PM. Boffin Emeritus

Re: Help computing dish volume [Re: polyspheric] #1177509 02/13/12 03:06 AM 02/13/12 03:06 AM
Joined: Oct 2003 Posts: 3,698 NE Oklahoma V Von OP master
Von OP master V Joined: Oct 2003 Posts: 3,698 NE Oklahoma	Quote: You're describing a shallow cylinder. The volume is the same as any other cylinder: R^2 � H � Pi, then � 16.387 to get cc from inches. 1.60" � .040" = .1024", or 1.7cc Thanks for the info. I couldnt remember the conversion factor to get to ccs from inches. By the way, I come up with 5.26 cc? 72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.

Re: Help computing dish volume [Re: Performance Only] #1177510 02/13/12 03:06 AM 02/13/12 03:06 AM
Joined: Oct 2003 Posts: 3,698 NE Oklahoma V Von OP master
Von OP master V Joined: Oct 2003 Posts: 3,698 NE Oklahoma	Quote: is that a round dish with straight walls and no radius at the bottom edge? (not likely) or a D shaped dish? The piston(s) do not have a dish in them. I am needing to cut a dish in them to lower the compression. Trying to approximate the dish volume. 72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.

Re: Help computing dish volume [Re: Von] #1177511 02/13/12 06:03 AM 02/13/12 06:03 AM
Joined: Feb 2007 Posts: 1,025 Las Vegas, NV dodgeboy11 super stock
dodgeboy11 super stock Joined: Feb 2007 Posts: 1,025 Las Vegas, NV	For your application, diameter X diameter X depth X .7854 X 16.38 = dish in cc's Keep in mind this is only accurate if the dish is perfectly cylinder shaped and has no rounded corners at the bottom. Best way is still to actually measure it, but this will get you close.

Re: Help computing dish volume [Re: dodgeboy11] #1177512 02/13/12 11:38 AM 02/13/12 11:38 AM
Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey J jamesc master
jamesc master J Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey	Quote: By the way, I come up with 5.26 cc? 5.27 actually, he forgot to use pi

Re: Help computing dish volume [Re: jamesc] #1177513 02/13/12 02:01 PM 02/13/12 02:01 PM
Joined: Oct 2007 Posts: 4,210 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,210 New York	Ooopps! Thanks, calculator bit me again. Fixed it. If at all possible, the dish should be contained entirely in the open area of the chamber - not under the quench surface. Boffin Emeritus

Re: Help computing dish volume [Re: polyspheric] #1177514 02/13/12 02:09 PM 02/13/12 02:09 PM
Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey J jamesc master
jamesc master J Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey	oh sure blame it on the machine...which you built just kidding i knew what happened, and yes keep it away from the quench don't want to lose that turbulence

Re: Help computing dish volume [Re: jamesc] #1177515 02/14/12 12:50 AM 02/14/12 12:50 AM
Joined: Oct 2007 Posts: 4,210 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,210 New York	The calculator in question is the one under my haircut... Gimme some slack, I waved at Harry Truman when he was President. Boffin Emeritus

Re: Help computing dish volume [Re: polyspheric] #1177516 02/14/12 12:56 AM 02/14/12 12:56 AM
Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey J jamesc master
jamesc master J Joined: Jan 2003 Posts: 5,875 communist bloc of new jersey	comon Jeffrey u know i was just bustin your chops...now go explain the piston speed question posted

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