Wiseco Pistons?

ASSISTANCE Hybrids & Advanced Aftermarket Engine Performance
1

Whats up G2’ers. Im starting to build my first motor, and i need some help identifying some pistons. I have a GSR head, and i just tore down my spare b18a1 block.
These are the pistons in question,

They are Wiseco Pistons and the seller states that they are B16 pistons with a 12.5.1 compression ratio. However, from what I’ve seen, pistons with a 12.5 compression ratio have more of a pointed dome. Am I wrong? And also, i thought b16 pistons were somewhere around 11.1 - 11.6 compression ratio?

2

B16b which is from a civic type r have the dome top like the first pic

3

Dont CTR (PCT) pistons have more of a point at the dome than these Wiseco’s?

I think the Wiseco’s look more similar to a P30 piston than a CTR piston because they have a flatter dome.

But regardless, do you think these Wiseco’s would be okay to run in my LS Vtec?

4

The Wiseco’s are definitely bigger than the P30s.

They’d be fine to run in an lsvtec.

Those will NOT yield 12.5:1 in a B16 block.

CTR pistons in a B16 will yield 11.76:1…those Wiseco’s do not appear bigger than a CTR piston.

edit

These, in a stock deck-height LS block and stock surface B16 head makes about 11.5:1 ;