Honda-Tech - Honda Forum Discussion - 9.1 B16a pistons in B18c?

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- - 9.1 B16a pistons in B18c? (https://honda-tech.com/forums/engine-machining-assembly-164/9-1-b16a-pistons-b18c-3347280/)

PGHintegra

Apr 16, 2020 07:21 AM

9.1 B16a pistons in B18c?

So I'm looking for a set of pistons for my B18c and I'd like to stay pretty close to factory compression ratio as I'm pretty happy with the drive ability on my current setup. I'm seeing a lot of options for 9.1 B16a pistons which i believe would put my B18 at about 10.1? I know they will fit and work just worried about compression ratio cause I plan on only running 93 octane. I've done some searches and I'm finding a lot of mixed answers. Just wondering if anyone has any experience with this?

JRCivic1

Apr 16, 2020 09:49 PM

Re: 9.1 B16a pistons in B18c?

With modern engine management, there is absolutely nothing wrong with running 10:1 compression... or more.

civic-steve-94

Apr 18, 2020 07:20 AM

Re: 9.1 B16a pistons in B18c?

https://www.zealautowerks.com/bseries.html

This is a good resource to reference

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