Just picked up this little engine which the guy said came out of his mini K , can someone confirm this please?
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| 1220 auto build https://www.ausmini.com/forums/viewtopic.php?f=5&t=90434 |
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| Author: | simonw [ Thu Sep 10, 2015 4:53 pm ] |
| Post subject: | Re: 1220 auto build |
Just picked up this little engine which the guy said came out of his mini K , can someone confirm this please? |
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| Author: | Morris 1100 [ Thu Sep 10, 2015 4:59 pm ] |
| Post subject: | Re: 1220 auto build |
I can confirm it is not out of a Mini K. Probably out of a 74/75 Leyland Mini. |
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| Author: | simonw [ Thu Sep 10, 2015 5:06 pm ] |
| Post subject: | Re: 1220 auto build |
Thanks Morris , prompt and precise ... Love it . Could I ask if it is a 1100 engine and whether the gearbox may well be 4 synchro? |
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| Author: | Morris 1100 [ Thu Sep 10, 2015 5:23 pm ] |
| Post subject: | Re: 1220 auto build |
It's an 1100, one of the last Australian assembled 1100s. The box looks like a rod-change, so yes 4 syncro. |
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| Author: | simonw [ Thu Sep 10, 2015 5:28 pm ] |
| Post subject: | Re: 1220 auto build |
Merci! |
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| Author: | simonw [ Mon Sep 28, 2015 6:12 pm ] |
| Post subject: | Re: 1220 auto build |
    Got the crank back and it ok , no cracks. Can anyone enlighten me please : How does one determine how much to shave off the journals (if at all) ? There is a ridge down the middle journal but the other feel quite smooth apart from surface rust . Is this factory balanced or are those machine marks from maybe a previous build? Many thanks : learning as I go 
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| Author: | drmini in aust [ Mon Sep 28, 2015 6:53 pm ] |
| Post subject: | Re: 1220 auto build |
Measure the diameter of the main and crankpin journals. Std sizes (nominal)- Crankpins 1.625" Mains 1.750" Standard regrinds are to std -.010" -.020", .030", or -.040". If a 1098, I'd not grind it more than .020", and make sure they put a nice radius in the corners, as large as possible. The notches you see in the crank were put there when made, to hold the crank for machining & grinding. The grind marks on the webs are factory balancing, or have been done since. The centre main often wears more than the other two. |
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| Author: | simonw [ Sun Oct 04, 2015 5:06 pm ] |
| Post subject: | 1220 auto build |
So sorry for the modern metric but : Crankpins 41.1-41.4mm Mains 44.4 I'll see if I can translate  Update: more consistent readings indicate 41.2 on the crankpins So I guess this is a standard grind crank yippee . Maybe just 10 thou needed to clean up ? Or is it possible to run with it ?? Would save a heap of dollars on a grind :p |
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| Author: | drmini in aust [ Sun Oct 04, 2015 5:47 pm ] |
| Post subject: | Re: 1220 auto build |
If you measured accurately it is now more than .003" wear. Original size limits were 1.6254-1.6259" diameter. = 41.28-41.29mm. At .001" wear, taper or ovality (absolute max) from original size it's no good. I'd get it reground at less than this. You can't run it like that. A -.010" regrind will clean it up like a new one |
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| Author: | mickmini [ Sun Oct 04, 2015 7:58 pm ] |
| Post subject: | Re: 1220 auto build |
last grank grind i had done was only $150, so you don't really save much compared to lunching the engine and starting again because you "saved" money on a regrind. |
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| Author: | drmini in aust [ Sun Oct 04, 2015 9:25 pm ] |
| Post subject: | Re: 1220 auto build |
mickmini wrote: last grank grind i had done was only $150, so you don't really save much compared to lunching the engine and starting again because you "saved" money on a regrind. I think Spiro ( @ St George Cranks) charges $200 now for a full regrind. It may be cheaper up in cane toad country.
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| Author: | simonw [ Mon Oct 05, 2015 2:33 pm ] |
| Post subject: | Re: 1220 auto build |
Ummm nup hence the hesitancy ... Got quoted 300+ I think many shops up here are getting used to mine prices .. :/ |
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| Author: | simonw [ Mon Oct 05, 2015 2:38 pm ] |
| Post subject: | Re: 1220 auto build |
 Been testing out me new bead blasting cab. Still tweeting the settings but running AD size at about 80 psi ... Will crank it a little more to see if it changes speed ... In other head news:     25.4 exhaust 29.2 inlet It seems both ports have been seated |
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| Author: | simonw [ Mon Oct 05, 2015 2:40 pm ] |
| Post subject: | 1220 auto build |
 Let the clambering fun begin !:) |
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| Author: | timmy201 [ Mon Oct 05, 2015 6:54 pm ] |
| Post subject: | Re: 1220 auto build |
Just watch out for those pink manifold gaskets - they can have asbestos in them |
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