irishflame27

do these look like 9:1 pistons for a b16a? they should be JE SRP part #149216... please let me know what you think

boostedcivicsir

that pic is about 6 years old but they are my 9:1 b16 je pistons.

irishflame27

i think the SRP uses a different dome/dish design, im not to sure, the box matched the part number i ordered for 9:1, but something makes them look different to me...

ashb82

those are 9.7to1

irishflame27

With a b16 head would that be okay or too high compression for boost?

irishflame27

I just spoke with alex at je and he said it should still be 9:1, they look like a higher compression, because they use a bigger valve relief, which requires a slightly larger dome to compensate for the lack of surface area....

ashb82

sorry my bad those look just like my 9.8:1 srp i had.I boosted them and ran great

99B16Si

most off the shelf flat top pistons will be 9:1 in a b16a block and just under 10:1 in a B18a/b/c block. Keep in mind the combustion chambers in the head will make a slight difference also.

tokesGTR

Yep, those pistons boostedcivicsir posted look like they'd be 9:1 in a 1.8 block, and around 8.0:1 in a B16.