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 Post subject: Re: 1220 auto build
PostPosted: Thu Sep 10, 2015 4:53 pm 
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998cc
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Location: Brisbane QLD
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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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Simonw
Brisbane QLD
1st car - 1964 Mini Panelvan 850
Previous - 1978 Leyland LS 1275 Gold
- 1969 Mini K


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 Post subject: Re: 1220 auto build
PostPosted: Thu Sep 10, 2015 4:59 pm 
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Joined: Wed Jul 21, 2004 10:32 pm
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I can confirm it is not out of a Mini K.
Probably out of a 74/75 Leyland Mini.


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 Post subject: Re: 1220 auto build
PostPosted: Thu Sep 10, 2015 5:06 pm 
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998cc
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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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Simonw
Brisbane QLD
1st car - 1964 Mini Panelvan 850
Previous - 1978 Leyland LS 1275 Gold
- 1969 Mini K


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 Post subject: Re: 1220 auto build
PostPosted: Thu Sep 10, 2015 5:23 pm 
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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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 Post subject: Re: 1220 auto build
PostPosted: Thu Sep 10, 2015 5:28 pm 
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998cc
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Location: Brisbane QLD
Merci!

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Simonw
Brisbane QLD
1st car - 1964 Mini Panelvan 850
Previous - 1978 Leyland LS 1275 Gold
- 1969 Mini K


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 Post subject: Re: 1220 auto build
PostPosted: Mon Sep 28, 2015 6:12 pm 
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998cc
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Location: Brisbane QLD
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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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Simonw
Brisbane QLD
1st car - 1964 Mini Panelvan 850
Previous - 1978 Leyland LS 1275 Gold
- 1969 Mini K


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 Post subject: Re: 1220 auto build
PostPosted: Mon Sep 28, 2015 6:53 pm 
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Location: near Baulkham Hills, NSW
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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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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 Post subject: 1220 auto build
PostPosted: Sun Oct 04, 2015 5:06 pm 
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998cc
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Location: Brisbane QLD
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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Simonw
Brisbane QLD
1st car - 1964 Mini Panelvan 850
Previous - 1978 Leyland LS 1275 Gold
- 1969 Mini K


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 Post subject: Re: 1220 auto build
PostPosted: Sun Oct 04, 2015 5:47 pm 
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Location: near Baulkham Hills, NSW
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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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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 Post subject: Re: 1220 auto build
PostPosted: Sun Oct 04, 2015 7:58 pm 
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1275cc
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Location: Sydney - strangely, I am glad of the sight of hills!!
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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the world is a book, and those who do not travel read only a page
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 Post subject: Re: 1220 auto build
PostPosted: Sun Oct 04, 2015 9:25 pm 
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Location: near Baulkham Hills, NSW
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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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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 Post subject: Re: 1220 auto build
PostPosted: Mon Oct 05, 2015 2:33 pm 
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998cc
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Location: Brisbane QLD
Ummm nup hence the hesitancy ... Got quoted 300+
I think many shops up here are getting used to mine prices .. :/

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Simonw
Brisbane QLD
1st car - 1964 Mini Panelvan 850
Previous - 1978 Leyland LS 1275 Gold
- 1969 Mini K


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 Post subject: Re: 1220 auto build
PostPosted: Mon Oct 05, 2015 2:38 pm 
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998cc
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Location: Brisbane QLD
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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:

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25.4 exhaust
29.2 inlet

It seems both ports have been seated

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Simonw
Brisbane QLD
1st car - 1964 Mini Panelvan 850
Previous - 1978 Leyland LS 1275 Gold
- 1969 Mini K


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 Post subject: 1220 auto build
PostPosted: Mon Oct 05, 2015 2:40 pm 
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998cc
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Location: Brisbane QLD
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Let the clambering fun begin !:)

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Simonw
Brisbane QLD
1st car - 1964 Mini Panelvan 850
Previous - 1978 Leyland LS 1275 Gold
- 1969 Mini K


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 Post subject: Re: 1220 auto build
PostPosted: Mon Oct 05, 2015 6:54 pm 
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1275cc
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Joined: Sun Apr 29, 2012 1:19 pm
Posts: 4336
Location: Wollongong, NSW
Just watch out for those pink manifold gaskets - they can have asbestos in them

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