Piston To Head Clearance - Diesel Forum

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Piston To Head Clearance

7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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03-08-2007, 07:21 PM	#1 (permalink)
icanfixall Senior Member Join Date: Sep 2000 Location: whittier ca usa Posts: 3,430 iTrader: (0) My Photos: (0)	Piston To Head Clearance Anybody know what the clearance between the piston and head is supposed to be? I have been posting 30 thousands but now I can't find those specs anywhere. My motor appears to be 19 thousands and that just sounds like its not enough but what is enough? Thanks... [img]/ubbthreads/images/graemlins/biggrin.gif[/img] __________________ 89 7.3 crewcab w/ Banks Sidewinder Wastegated Turbo. 4 inch straight piped. BTS E4OD trans with 2 extra gallons of ATF in a Mag Hy-Tec pan. Gear Vendors. Rodney Red custom aluminum radiator. Moose Pump with "G' injectors. Motor rebuilt with new after market ported heads. Mahle low comp pistons milled 12 thousands. Balanced to 1/4 to 1/3 gram. Lined bored. Block decked and sleeved on all 8. Shimed oil pump for higher pressure. Intake and exhaust logs ported too. Hypermax in shop waiting to be installed later....

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03-08-2007, 08:51 PM	#2 (permalink)
cdnsarguy Senior Member Join Date: Jan 2003 Location: Neepawa, Manitoba Canada Posts: 16,819 iTrader: (0) My Photos: (66)	Re: Piston To Head Clearance Sending email..... I think the valve clearance to head face is the important one, the piston can protrude above the block as seen in the info I sent. __________________ http://photos.thedieselstop.com/show...0/ppuser/28329 93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93 has 160K+, it's basically a stock truck with all the Ford options, just no disc player. Toys: 26'Jayco FK TT, 18'Sylvan Pro Fish. Proud Canadian BOOB man too!!

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