New crank and pistons...what cc
Turbo Mini Forums

Ok im thinking of putting an 110 crank in a 998 with =120 pistons from minisport australia, what cc would that give me?

cheers

The 998 pistons have a higher compression height than the 1100.

Hence, it would give you pistons sticking out the deck by +0.150".

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

If I used 1100 pistons then would that work? Minisport aus do them in +60

Edited by bertieboo on 15th Jul, 2008.

Yep, using 1098 pistons would be ok. The only difference between a 998 and a 1098 is the pistons and crank. Well, they had different heads from the factory but they are interchangeable

EDIT: Thats how my build is put together. A 998 donor engine with Hypatec 1098 +0.060" pistons and a 1098 crank

Edited by GaryOS on 15th Jul, 2008.

On 12th Nov, 2009 Paul S said:

I think Gary OS has taken over my role as the forum smart arse

Yes, but you can only get them up to +0.060".

I was looking into this the other day for some reason.

I posted a chart giving capacities and combustion chamber volumes for common overbores, including 1098s a few days ago.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

1100 Turbo build with Hypatecs..

http://home.online.no/~lyngset/1300.cfm

If you look hard, you can see where the block came from:

Edited by Vegard on 15th Jul, 2008.

My dad has an 1100 engine from a moris minor, would that have the same crank from the 1100 mini engines?

No, the in-line cranks have a different end for flywheel mounting.

ah right. I remember a fella telling me that you could get a 998 out to 1215cc? I cant remeber exactly what it was but it used a 1100 crank and hillman imp (?) pistons.......cant remember if they were the right pistons, can any body correct me?

Edited by bertieboo on 16th Jul, 2008.

Yup, a 1098 with Imp +0.040" pistons gives you 1251. I think Vizard talks about it in the "Big Motors" section of his book

On 12th Nov, 2009 Paul S said:

I think Gary OS has taken over my role as the forum smart arse