Hey all,

http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=150246461191&_trksid=p2759.l1259

Can a mini engine be worked to have 1422cc? Or is the guy a lunatic?

Seems like a nice car

He owns a mini, of course he's a lunatic

Yes I think they can go that big but I think because it's a high comp motor the true cc may not be that high...but still a 1400 though. Also with a compression that high I would be a rather cautious because as soon as it breaks you'll need a hole new engine block, possibly a new head and in the worst case a new box

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Respect mine and I'll respect yours.

Well that's kinda obvious

The question is can it be done?

Look at the location of the tacho. That should tell you the sort of lunatic you are dealing with.

if I was think ing of a purchase I wouls be asking the seller who built the motor and what the brake conversion was..atleast

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Stop Licking the Dog...I Don't Care Who Started It

Ask theminiman about his stroker donks, he's had a 1510cc stroker for years. Not sure if its still a runner but last time I saw it running it was still in his Targa Mini. If it can be done he's done it...

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Mini, its in my blood........

After 1380 you have to offset the bores I believe.
I've known of 1440cc to be a big job, didn't know you could stretch to 1510!

Yea, you gotta offset bore, stroke the crank and just about everything else. Biggest Problems is the bearings. You cant get the oversizes you require anymore.
check out the minimans web page. http://www.miniman.com.au/blew.htm Have a look how thin the metal is between the bores on his 1500cc donk. He took me for a spin in the blue beast when I used to live in Brisbane. I remember like it was yesterday, the wheels spun in 3rd and 4th from memory.

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Mini, its in my blood........

1426cc was quite popular in the olden days

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"Show me the Mini!"

1412cc mini donks are pretty common place these days

just about any overbore after 1310cc i will offset bore them anyway, the head gasket will then line up (You all may have to think about that one yeah??? There`s a story to it, some of you will know )

& yes, we even have a 1600cc mini engine right here, right now,,, yes it`s actually a 1591cc (we just round it up a tad to make it easier to say) & yes it`s all mini, just massive bore & massive stroke

1422cc is a bit of a strange one tho, but i`ve seen people use the oddest of pistons so it`s quite easy to do, there are plenty of other configurations about too,,, 1430, 1440, 1450, 1460, 1485, etc etc etc all using different pistons & crank stroke relationships

You can offset bore out to 1426cc easy enough & then add a 84mm stroke crank to that & end up with a 1485cc pretty simple.

& yes my 1510cc has lasted & lasted & lasted, but it`s out of the car & apart now , it`s meant to be getting a re-ring & bearing job, it`s just that i havn`t got to it for reasons beyond my control,,, i will soon tho, i`ll crack the shits soon & actually slip it onto the bench in front of everything else & just do it instead of some poor customers motor ,,, But SSHHhhhhhh... don`t tell anyone

Sooo,,, yes, the answer is a 1422cc mini donk is quite possible, just ask him the bore & stroke measurements & also ask him what pistons he used & that should show his knowlege & honesty.

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.

i always see this car in the area, looks nice.

$7K... I bet he's pissed, woulda (shoulda) cost him a lot more than that...

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did I tell you that I won a trophy?

Bugger got stuck at work for a few extra hours and was going to put in a bid of $7000 when I got home. Oh well.

Just a question if you had a standard 1275 in good condition what price would you be looking at to get say 1400 odd cc. and using decent parts that are going to last? I know its like saying how longs a piece of string but yeh.

Blake, a 1360cc or a 1380cc engine is going to cost the same price as a std basic engine re-build, it`s just that you use 73mm (95thou) or 73.5mm (114thou) oversize pistons.

It`s best to have them offset bored so there is a more even amount of meat(iron) between all the bores & in fact it helps line up the cyls to suit the head gaskets because the head gaskets are allready made with that offset bore in mind

If you chose to go much bigger in the bore than those sizes then you risk having quite a flexy cyl block & quite a lot of piston ring blow by occurs & the end result is lots of crank case pressure & not as much power is produced than you would think because of the lost pressure past the rings from the bore flexure , also possible head gasket issues & & & etc etc etc blah blah blah

Soooooo,,, hence one of the reasons why we lengthen the stroke of the crank shaft (commonly called a Stroker & generally end up at about 84mm instead of the std crank stroke of 81.3mm) we are able to suck more gas in that way rather than going any bigger in the bore size.... Now in doing a stroker crank we end up spending quite a bit more on the crank mods, also switching con rods to suit & doing a far chunk of work on those too, maybe a bit of work on pistons to suit (depending on the application & the pistons chosen) etc etc etc blah blah blah

so, yeah, how long is a piece of string???... ok,,, well... in this case you can add approx upwards of $1500 to the cost of a std issue full power unit re-build cost

1360cc with stroker crank turns out to 1415cc-ish
1380 with stroker crank turns out to 1440cc-ish
there are many other options on piston sizes & stroke lengths to end up with varying engine capacities more or less than those i`ve described

--> EG: my own personal road engine bore is 160thou oversize (which would be 1426cc with a std stroke crank) but i`ve added an 86mm stroke crank which then makes it 1510cc-ish

My good mate & next door neighbour Stewys race engine is 1591cc (we call it a 1600cc)

I`ve known them to go as big as 1620cc & my dad has worked out a way to make one nearly 1700cc (don`t ask, there`s way too much involved for me to dribble on about here)

so,,, It`s only the constraints of the size of your wallet which determines the length of that piece of string

If you work on the average power unit re-build costing $4500-$5000-ish ,,, then add another couple of grand-ish & you`d be pretty close to the right money.

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.