27 replies to this topic

[blister]

hi i was just looking around on internet and i found someone who bored a 1275cc into a 1430 is this possible

[Jimmyarm]

Yes and no. To get 1430 you offset bore and then have the crank stoked iirc

[blister]

well i got a 998cc and i want more power without showing modification so my insurance dont change (am i bovvad if its illegal) lol so i am going to get a 1275 metro engine and make it to highest bore possible and is that a 1430 or can it go more also where can i take it for overbore

[miniman1969]

The largest bore possible is 74mm which with a standard stroke gives 1399cc, i would go to 73.5mm giving 1380cc. You can have the crank stroked to give 1600cc but not a very nice road engine, If I were to do mine I would go for a +20 giving 1293cc. Any good machine shop will be able to do the work, you can bank on spending around £80-£100 on rebore

[Retro_10s]

Yes and no

great answer

yes it is possible. but i wouldn't bother. they are short lived engines, buy a cheap 1275 and rebore it so that it's fresh.

[blister]

sorry what do u mean short lived? will it explode or summin lol

[miniboo]

right then.

you will need to tell your insurance iof any mods you do as it will null and void your insurance if you do not.

Also please post in the correct sections.

[blister]

my mini has had a engine changed so many times since first person so another wont matter and with a bigger cc engine its not reli noticeable and the car will just be swapped back to 998 if there is a crash

[Guess-Works.com]

above 73.5mm the blocks liable to flex, and not all blocks can be taken out to 74mm anyway, I have one in my garage which blew an oil way when bored to 74.

and there's absolutely not point trying to disguise a 1275 block as a 998

[metro1275]

ok i think a good 1275 is the way to go, it will be plenty fast with a decent cam

[Guess-Works.com]

my mini has had a engine changed so many times since first person so another wont matter and with a bigger cc engine its not reli noticeable and the car will just be swapped back to 998 if there is a crash

Not if it's in an compound waiting for the inspectors to have a look...

[miniboo]

ok well here is a scenario for you: "so the car gets writen off you are in hispital and 2 other people are seriously injured and you are going to swap the engine over!!!DON'T THINK SO SOMEHOW."

dont be STUPID or IGNORANT get insured properly

Edited by miniboo, 07 December 2006 - 08:54 PM.

[The Matt]

Pretending to not be 'bovvad' is just ludicrous. As people have already said, to change your engine from a 998 to a 1275 and not tell your insurance is stupid. How old are you? Insurance will be a killer with any mods if you are a young un.

Please be more responsible when posting threads like this!

If, however, you do wish to change your engine for a more powerful unit, then fit a standard MG Metro 1275 engine, they are a good engine (if you find one in good nick).

Whatever you do, tell your insurance or you could end up in serious trouble (no matter how bovvad you are).

[miniman1969]

I've another idea - go buy a SAXO! pmsl

[Dog]

a Paxo..... nah mate a Corsa is where its at....
I mean come on... a full 1,1 engine