What difference 2.0 / 2.5

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jibbers
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Post Fri May 27, 2005 12:43 am

Before anyone says "500cc you fookin dinnie"
My Q is : Is the bore different or is there a longer stroke ?
I ask because i know they are both M20 lumps and a lot of the parts are the same , does this mean the heads are identical and the difference is in the bottem end , i want this to be the case cos i have not long moved from 320 to 325 and the 320 will soon be for sale , i also have a spare 320 doin nowt but sittin around , it has a sweet lump tho , so what i want to be told is that i can use the head should the worst happen to mine , as it seems to be all the rage on here at the moment to crack heads ! !

Please make me a happy bunny and say yes !

:lol:
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Davenotouring
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Post Fri May 27, 2005 12:49 am

320 = 80x66 (bore x stroke mm)

325 = 84x75

The heads and bottom ends are different I'm afraid. :?

:)
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jibbers
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Post Fri May 27, 2005 1:02 am

What a bitch , i thought i was gonna have a result there !
Oh well at least if the worst does happen i can drop the 320 in it , ermm
not fookin likely im never goin back there coppa !
Just have to get my hands dirty wont i !

Cheers for the info :D

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Davenotouring
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Post Fri May 27, 2005 1:14 am

No probs mate.

When my newly slotted in 325 engine's head went, I had a perfectly good 2.0 engine still there. Can't go back to being slower. Gotta be back to 2.5 or better!!

:D
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m1key
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Post Fri May 27, 2005 1:26 am

the 2.0 is about the same on fuel as the 2.5 ??

plus the 2.5 pulls better.
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jibbers
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Post Fri May 27, 2005 1:27 am

There aint a chance that i could go back either , i was over the moon with the 320 when i first got it , i had it for about a year and i would have stuck with it but the 325 came up at auction for Ԛ£460 and i had to take the chance and buy it , i was lucky as the only prob with it was the lack of clutch plate !

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I love her
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Andy_magic
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Post Fri May 27, 2005 10:52 am

320i heads will drop straight on the E28 525e block, giving a budget 2.7 motor that folks reckon will give about 175bhp and more torque than a 325i when fed with 325i injectors etc etc.
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m1key
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Post Fri May 27, 2005 11:11 am

now thats nice....
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Davenotouring
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Post Fri May 27, 2005 11:16 am

m1key wrote:the 2.0 is about the same on fuel as the 2.5 ??

plus the 2.5 pulls better.
This is about right too!
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