What is all this B3 B6 stuff?

[Gomez]

^LOL

[drddan]

Yes! It is the same engine block as the B3! Bigger displacement is all

[Flw Sock]

If you go B6 shouldn't you upgrade the transmission too?

[jimdigs]

the B designates the "family" of the engine. that is to say that the basic architecture/layout of the block is very similar within that family. all Bs are inline 4cyl. mazda has other families of engines such as G, MZR, K, etc. the number after the B is a ballpark value for the displacement in cc. there are B1, B3, B5, B6, B8, BP, BPD, BPT displacements and configurations in this B family.

Thanks for the info. So is the stock engine in a festiva a B3? Or are the B1, B3, etc. the Mazda engines?

[navdoc101]

Thanks for the info. So is the stock engine in a festiva a B3? Or are the B1, B3, etc. the Mazda engines?

B3 They ARE Mazda B3 engines. Our Festivas are basicly Mazdas.

[jimdigs]

B3 They ARE Mazda B3 engines. Our Festivas are basicly Mazdas.

I never knew this. Thanks for breaking it down for me. I'm the type that needs things broken down to the bear bones before I understand.

[Safety Guy]

FLW Sock wrote:

"If you go B6 shouldn't you upgrade the transmission too?"

No need to if you use a quality clutch, do it right, and don't beat on it too much. Plenty of folks use the stock transaxle with the B6 with no issues. My guess is the stock trans and clutch will be fine up to around 90 hp, and more if you are careful. I have about three years now on my stock clutch (A-Zone brand) and stock B6 (rated at 82hp).

Karl