Piston Tech. - ZR-1 Net Registry Forums

flyin ryan · 12-14-2008

Thought you guys might find this interesting. this is a mock-up/checker piston for a Comp. Elim. car i'm building the engine for. we have to squeeze the compression so hard i'll have a semi-finished piston sent to me so i can mock-up, then i tell the piston manufacturer exactly what i want/need for valve to piston clearance. notice this piston has no upper ring lands yet.

flyin ryan · 12-14-2008

XfireZ51 · 12-14-2008

FR,

Very impressive. Huge intake valve! Do you do the machining?

QB93Z · 12-14-2008

Thanks for posting the pics. I always wondered how that is done.

Jim

flyin ryan · 12-14-2008

sorry the pics didn't turn out as good as i would have liked, i tried with the flash on & off

. i should have also mentioned this piston is for a Sm. Blk. Chev. with Chevrolet Splayed Valve Bow-Tie heads. have to have a GM part number to be NHRA accepted/legal in the class (C/SMA). i'm not crazy about the valve sizes but on this particular set of heads it wasn't my call, i got what i got

. Intake is 2.20" Dia. w/7mm stem. Exhaust is 1.625" Dia. w/.3125" stem. i generally do my own machining just for the fact i want things the way i want them. on this set of pistons i am working with really good guys that do/understand exactly what i want, so i'll very little to do in the way of machining, which is kinda nice for a change.

12-14-2008	#1
flyin ryan Join Date: Aug 2006 Location: Edmonton, Alberta or Phoenix, Arizona Posts: 2,736	Piston Tech. Thought you guys might find this interesting. this is a mock-up/checker piston for a Comp. Elim. car i'm building the engine for. we have to squeeze the compression so hard i'll have a semi-finished piston sent to me so i can mock-up, then i tell the piston manufacturer exactly what i want/need for valve to piston clearance. notice this piston has no upper ring lands yet. Last edited by flyin ryan; 12-15-2008 at 11:39 AM.

12-14-2008	#2
flyin ryan Join Date: Aug 2006 Location: Edmonton, Alberta or Phoenix, Arizona Posts: 2,736	Re: Piston Tech.

12-14-2008	#3
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,683	Re: Piston Tech. FR, Very impressive. Huge intake valve! Do you do the machining?

12-14-2008	#4
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,684	Re: Piston Tech. Thanks for posting the pics. I always wondered how that is done. Jim

12-14-2008	#5
flyin ryan Join Date: Aug 2006 Location: Edmonton, Alberta or Phoenix, Arizona Posts: 2,736	Re: Piston Tech. sorry the pics didn't turn out as good as i would have liked, i tried with the flash on & off. i should have also mentioned this piston is for a Sm. Blk. Chev. with Chevrolet Splayed Valve Bow-Tie heads. have to have a GM part number to be NHRA accepted/legal in the class (C/SMA). i'm not crazy about the valve sizes but on this particular set of heads it wasn't my call, i got what i got. Intake is 2.20" Dia. w/7mm stem. Exhaust is 1.625" Dia. w/.3125" stem. i generally do my own machining just for the fact i want things the way i want them. on this set of pistons i am working with really good guys that do/understand exactly what i want, so i'll very little to do in the way of machining, which is kinda nice for a change.