Piston dish?

[cuel]

I have a set of JE pistons, and the box says the dish is -.315. I'm guessing its in cubic inches, but not sure. I need to get a general idea of what cr these would be. The calculator I used said they'd be 5cc dish, which doesn't seem right.

Here's a pic of the tag on the box:

Thanks

 

[mk3ukr]

7M JE pistons dome volume "-18.5cc" from their leaflet
I also wonder what is dish figure?
My 6 years old picture of +0.5mm JE pistons

 

[Zumtizzle]

Try contacting a tech at JE; if worst comes to worst you could CC the piston.

 

[88_7mge]

thats what i hate about companies like JE. Half the specs listed on that label are Imperial measurements and the other half are Metric. Since all the metric measurements are labeled with the units and all the imperial measurements are not, i believe they are measuring the dish in cubic inches.

 

[cuel]

JE told me they're a custom piston, as their standard piston for a gte is -.185. They said they want the part number to tell me what they are.

I guess I'll go get some plexiglass and a cc dropper, and see if I can get a solid number. Thanks for the help all.

 

[IJ.]

Stock from memory is -19cc if that helps any.

 

[Mark Conte]

That's an old old JE box. Back then especially that measurement you were looking at is the dish depth, not volume. I just got ahold of JE for you. Dish volume is -29.5cc for that Job Number.

 

[Zumtizzle]

^Hi Mark!

Welcome to SM!

 

[cuel]

Thanks Mark.

I had talked to JE(finally), and they told me the same, -29.5 cc, which would work out to around 7.5:1 with stock head and block dimensions, and a stock head gasket?

 

[2jz88mk3]

I have a set of JE pistons, and the box says the dish is -.315. I'm guessing its in cubic inches, but not sure. I need to get a general idea of what cr these would be. The calculator I used said they'd be 5cc dish, which doesn't seem right.

Thanks

Didn't read much of the other posts =P but for what its worth 0.315 Cubic Inches is 5.16192516 cc

1 (cubic inch) = 16.387064 cc

Hope that helps

 

[gofastgeorge]

Most likely the .315 is a depth measurement from the top of the piston.
Stick a caliper on one, see if that is what it is.