I have provided Diamond Pistons with the information for Jay's heads...

[blykins]

I'm doing a couple builds using Jay's new heads.  Jay provided me with the solid models and data so that I could get that information to Diamond.  They knocked out a full custom set of pistons for me in about 3 weeks.   Since they have the data now and have made pistons to suit, they can provide pistons for those cylinder heads at anytime. 

These are for a 511ci build, 4.375" x 4.250".  Moly coated skirts, vertical gas ports, setup for Molnar Power Adder rods and a .8mm ring pack.  I also had them provide a set of Trend tool steel H13 wrist pins since we will be pulling vacuum on the crankcase. 

Nice pieces.

[Gaugster]

Cool!

I ordered pistons through Jay's contact CP. They could arrive in another week or so. Will post up a thread just as an FYI.

[Joey120373]

Got mine through CP as well.

Curious Brent, what’s the CR on that motor? I was hoping to get a piston that looked exactly like that with a deep enough dish to get the CR where I wanted it ( still second guessing my CR….)
needed a bigger dish, so my pistons have very little in the way of quench pads .

[blykins]

Got mine through CP as well.

Curious Brent, what’s the CR on that motor? I was hoping to get a piston that looked exactly like that with a deep enough dish to get the CR where I wanted it ( still second guessing my CR….)
needed a bigger dish, so my pistons have very little in the way of quench pads .

12:1

You really don't need a lot of quench pad.  We've proven over the years that a full spherical dish (like a bowl) works really well. 

[jayb]

Brent, are the pistons set up so that they will work with stock FE head valve locations as well as the valve locations in my heads?  I thought that was important, all the CP pistons that I've specified have that feature...

[blykins]

Brent, are the pistons set up so that they will work with stock FE head valve locations as well as the valve locations in my heads?  I thought that was important, all the CP pistons that I've specified have that feature...

I didn't request that, so not sure.