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czerial
 Post subject: 1098cc crank sizes
PostPosted: Sun Jul 23, 2017 2:26 pm 
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1275cc
1275cc
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Joined: Fri Oct 15, 2004 2:46 pm
Posts: 5281
Hi all,

I found a crank in the garage and I have some questions
1. The stamp is 12g82 I googled and it seems like it is a 1098cc crank, is that correct?
2. How do I find out if it has ever been ground I.e what are the standard measurements for all the journals?

Thanks for your help!

Chris
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drmini in aust
 Post subject: Re: 1098cc crank sizes
PostPosted: Sun Jul 23, 2017 6:27 pm 
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39643
Location: near Baulkham Hills, NSW
Mains are 1.750" dia, big ends 1.625". Standard undersizes are -.010", -.020", -.030", -.040" off these sizes.
Before grinding it, get it crack tested. They were prone to cracking.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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