M20 question.

Post Wed Jan 26, 2005 8:15 pm

is there any way of telling engine size from the block?

friends looking at a s/h engine an needs to be able to check what the it actually is

Post Wed Jan 26, 2005 8:28 pm

i remember someone saying the motor size is stamped on the block at some point, but not sure where

Post Wed Jan 26, 2005 8:33 pm

oh and the other question is does the crank have size or number stamped on it anywhere?

Post Wed Jan 26, 2005 8:43 pm

not sure bruvs, and im not sure where it is in the block or on the head,

i heard that the numbers should be the same ,i.e m20b20 on the block and the same on the head, as for crank i think it a given that they belong in the block found in.

Post Wed Jan 26, 2005 8:56 pm

johnono wrote:not sure bruvs, and im not sure where it is in the block or on the head,

i heard that the numbers should be the same ,i.e m20b20 on the block and the same on the head, as for crank i think it a given that they belong in the block found in.

i see what ur saying but its not always gonna be the case johnno.

say u were buying an eta or diesel crank?
or an eta bottom end.

how cud u tell it was what ppl said it is?

Post Wed Jan 26, 2005 9:18 pm

aha

good point bruvs, like said, im not sure but it has been discussed, have a search in the tech sec. and i think its there

iÃƒ”šÃ‚´ll have a butchy aswell

Post Wed Jan 26, 2005 9:26 pm

The head should have the engine size stamped/cast into it on the spark plug/exhuast side towards the front. A 325 engine will have 2.5/2.7 stamped into it if I remember correctly.

Hope this helps

Steve

Guest · Post Thu Jan 27, 2005 2:10 pm

An M20 2.5 litre engine will have something like "25 6K 1" (i.e. 2.5 litre, 6 Cyl) stamped next to the engine number (looking from the inlet manifold side the engine number is to the right of the base of the dipstick tube).
As 325SME says the head will have "2.5/2.7" embossed on it on the exhaust manifold side towards the front.

If you need piccies of the locations and numbers to help let me know, I have a spare 2.5 out on an engine stand at the moment ready to be stripped.

Post Thu Jan 27, 2005 6:12 pm

325SME wrote:The head should have the engine size stamped/cast into it on the spark plug/exhuast side towards the front. A 325 engine will have 2.5/2.7 stamped into it if I remember correctly.

Hope this helps

Steve

You remember correctly, mines got 2.5 stamped just below the sparkplugs..