55 replies to this topic

[Cooperman]

Yes, it does appear to be an 850 engine.

[ludiluka]

But is it mini cooper ? was the engine changed ?

[jaydee]

Sorry just to be more precise, its a late austin morris 850 engine, so its possible they've changed the engine.

Edited by jaydee, 23 May 2012 - 07:07 PM.

[jaydee]

Your chassis number is from an early 998 innocenti cooper Mk1.
http://www.miniminor...e_innocenti.htm

[ludiluka]

well this will be a quick project because chasis is rust free :) this was my last project

[ludiluka]

Hi there

i took the cilinder head of the engine today. Head Nr: is 12g295 and cilinder diameter is 64mm.

Is the engine 850 or 1000ccm ?

[jaydee]

998 cc
(Or an 850 with 998 pistons..)

Are pistons flat tops or D shaped?

[Spitz]

848 stock bore is 62.9
998 stock bore is 64.58

From the attached engine tag...it's an 848, and as someone mentioned a 295 head would be proper for an Inno 848

[ludiluka]

Pistons are D shape

So if i understend you correctly head number; 12g295 is for 848ccm engines ?

[Naughty 40]

Yes that is correct

[jaydee]

295 is a cooper head, matched to D shaped 998 pistons, it could be either a cooper engine with a mismatched engine number (i dont get it as the shell is a cooper) or a replacement engine of some sort.
Are you able to get a rough measurement of the crank stroke?
850 bored out to accept D shaped pistons -> 2.88" (68.26mm)
998 cooper -> 3" (76.2mm)

[Spitz]

Pistons are D shape

So if i understend you correctly head number; 12g295 is for 848ccm engines ?

295 can be used on 848cc ( like someone said..Inno used them on 848 )...and would have had to use raised top pistons
I don't think any other production 848cc cars used it though, just the 998 Cooper ( I think the Sport 850 did also,...but that wasn't a factory kit )

Edited by Spitz, 25 May 2012 - 04:00 PM.

[Cooperman]

Now I'm confused. I've never seen any D-Top pistons for the bore of an 850. Were they special D-Tops?
I think there needs to be some accurate measurement of bore & sroke here to avoid all this guessing.

[jaydee]

I think hes got the 998 D tops we know, infact he measured about 64mm and D tops are 64.5mm

[ludiluka]

Hi there

I find out that engine is 998ccm. Some guy who know almost everything about inno, mini told me that in italy they put engine number that was closest to hand :)