Identifying my engine

[William]

Is there any way of telling what type of m20 mine is, B20 etc??

thanks

[Simon13]

u wanna hope it's a 2.5 on that motorsport of yours! it's all they came with

[William]

Yeah i bloody hope so simon!! I thought there were production variations that were labelled with a "B" prefix, am I wrong, is every m20 exactly the same?

[jmc330i]

M20B20 is the 2.0ltr 6cyl.

M20B25 is the 2.5ltr 6cyl.

Look on the exhaust side of the head just above the exhaust manifold, between the sparks for cylinders 1 and 2, it should say 2.5/2.7 in a small circle if its a 2.5.

[William]

o i see, i never realised that was how simple it was, when people mentioned b20/b25 I thought it referred to when the engine was made, and therefore which 'edition' it was !!

[kam-325i]

Here is a Pic of the Stamp/Circle thingy on a 2.5

[William]

awesome, cheers man I'll check mine out, the way it goes and sounds though I think I know whats going to be on that stamp!!