piston/deck clearance: how much is too much?

87hilux7mge · 07-09-2011, 03:51 AM

so, im wondering, would i be able to get away with .030" above deck? when i had my n/a block done, i ended up with a total of .024" above deck, i believe stock is .020?

i could always get a 2.0mm mhg to avoid piston to valve contact, im just worried about top ring and ringland.

if anyones got an opinion about this, lemme know, itll help with the easy stroker setup.

kamikazemkiii · 07-12-2011, 09:17 AM

I dont believe you'll have any problems, just use a thicker headgasket.

87hilux7mge · 07-13-2011, 06:23 AM

thats my thought, but im also concerned with squish area. i think itll be ok.

two-step-n · 07-13-2011, 06:25 AM

your fine just run a 2mm hks stoper

87hilux7mge · 07-13-2011, 06:31 AM

aight. this is for the stroker, they are basically gonna be custom 1.181" compression height pistons for a b-series honda with machined wrist pin sizes. decided the 1.52:1 rod/stroke ratio was too little, so these will allow keeping the stock rods. any more info if anyone wants to pipe in?

kamikazemkiii · 07-13-2011, 06:54 AM

Honda pistons dont belong in a supra...

87hilux7mge · 07-13-2011, 07:28 AM

yea i know, but they are the ones with the right compression height, and since they are forged and would be modified. sooooo...i say they are serving the higher toyota purpose.

07-09-2011, 03:51 AM	#1
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	piston/deck clearance: how much is too much? so, im wondering, would i be able to get away with .030" above deck? when i had my n/a block done, i ended up with a total of .024" above deck, i believe stock is .020? i could always get a 2.0mm mhg to avoid piston to valve contact, im just worried about top ring and ringland. if anyones got an opinion about this, lemme know, itll help with the easy stroker setup. __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.

07-13-2011, 06:23 AM	#3
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	thats my thought, but im also concerned with squish area. i think itll be ok. __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.

07-13-2011, 06:31 AM	#5
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	aight. this is for the stroker, they are basically gonna be custom 1.181" compression height pistons for a b-series honda with machined wrist pin sizes. decided the 1.52:1 rod/stroke ratio was too little, so these will allow keeping the stock rods. any more info if anyone wants to pipe in? __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.

07-13-2011, 07:28 AM	#7
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	yea i know, but they are the ones with the right compression height, and since they are forged and would be modified. sooooo...i say they are serving the higher toyota purpose. __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.

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07-12-2011, 09:17 AM	#2
kamikazemkiii 3" Exhaust Join Date: Mar 2009 Location: raleigh Posts: 138	I dont believe you'll have any problems, just use a thicker headgasket.

07-13-2011, 06:25 AM	#4
two-step-n 3" Exhaust Join Date: Oct 2009 Location: mesa az Posts: 51	your fine just run a 2mm hks stoper

07-13-2011, 06:54 AM	#6
kamikazemkiii 3" Exhaust Join Date: Mar 2009 Location: raleigh Posts: 138	Honda pistons dont belong in a supra...