1275 crank
Turbo Mini Forums

After checking my crank today it appears to be bent, so looks like I'll be needing a new one!

I'm after a fully worked crank, wedged and bladed etc, but if someone has a standard crank (preferably with good mains) and good taper that'll be fine too. :)

Cheers
Matt

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1/4mile in 13.2sec @ 111 terminal on 15psi

Get it straightened!

If something is worth doing, it's worth doing half of.

I was thinking that, but then the taper isn't great on mine (probably as the flywheel has been vibrating around since being bent). And I wanted some more work done to it anyway, to get some more weight out of it.

My main concern is that it has been stressed now, and it will probably be weaker at that point once straightened.

It's got 0.28mm run out which seems a fair bit!

Edited by matty on 4th Jul, 2013.

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1/4mile in 13.2sec @ 111 terminal on 15psi

Matty i have a couple of good standard cranks here, you can pinch one a replace it when you find another if you like

Cheers Neil, I may well take you up on that.

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1/4mile in 13.2sec @ 111 terminal on 15psi

If your going to avon on the 20th I could drop it to you if you like?

Drives
-Ford S-max Mk2 Ecoboost
-Rover 100 VVC #2 - track project

Searching is all you need on TurboMinis

Straightening it is easy if you have access to a fly press and wont induce stress of affect its reliability, it's how cranks are straightened at the factory on some very expensive modern crankshafts.

Remember this, the crank I had in the 16 vaver when I had the center main bearing failure flexed enough to allow the pistons to touch the head. That was the thickness of the head gasket, and I drove the car home 28 miles A regrind and line bore, and it went back in for another 3000 miles

Do you think it got bent in a hydraulicing incident?

Thanks for the offer Paul, but I don't think I'll make mitp this year.

Colin - yeah I have access to a press, but I'm not too convinced that it'll be as strong as it was. We straighten cranks at work by preening the radii in different places on the journals/mains, then get the journals reground. But they are 5 bearing cranks, that aren't having the nuts rev'd off them. I'll keep hold of it for a rainy day though. Lol

Nic - I don't think so as that was years ago now, the centre main bearing wasn't looking too healthy but considering the crank was bent it could of been worse. the last trip I did in it was coombe, it could of happend then. the shitty grade of centre main cap bolts wouldn't of helped either! I'm tempted to go for one of them cast mini spares 4 bolt centre cap instead.

Edited by matty on 6th Jul, 2013.

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1/4mile in 13.2sec @ 111 terminal on 15psi

Got some of them hard core Cat bolts from carl for your centre main strap.

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.