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 Post subject: Re: 1220 auto build
PostPosted: Mon Dec 21, 2015 2:38 pm 
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998cc
998cc
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Joined: Wed Jul 08, 2015 3:29 pm
Posts: 857
Location: Brisbane QLD
Have finally got around to trying to pop the convertor so I can split the block and box and get the top end work done after christmas

Learning all the away and this was no different .....i left this keyed washer in place whilst trying to pull the convertor...needless to say I wasn't having any success :lol:
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take it out people...its a lot easier! :mrgreen:

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once i removed the key .... the rattle gun did the rest and she came off with no drama

Next was side covers

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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: Tue Aug 23, 2016 8:10 pm 
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998cc
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Joined: Wed Jul 08, 2015 3:29 pm
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Location: Brisbane QLD
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box separated from block, pulled the little 998 cranky out. Question does anybody know whether I have to keep my rods for the new 80thou over Pistons from GR? Or do I have to buy new rods?


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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: Tue Aug 23, 2016 8:17 pm 
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848cc
848cc

Joined: Sat Aug 20, 2016 7:06 pm
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Discovered this block had 30,000 over pistons in it so it's obviously been rebuilt in the past. I have a confession!
it's been decided that will go only 80thou over on this block making it about 1161 mL? Reason being it's the original block for car and I don't want to muck it up so we are playing it safe with regard to block boring and staying clear of the 1220 offset bore just in case. It seems with discussing this engine with a few experts that building The 1160 and matching the camshaft for a high torque low rpm engine would be the best compromise for the automatic.


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 Post subject: Re: 1220 auto build
PostPosted: Wed Aug 24, 2016 1:22 pm 
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Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39621
Location: near Baulkham Hills, NSW
You can use the 998 rods, they are same as 1098 ones. Check the rods for straightness. I would not use lock tabs, new ones are soft- just oil the rod bolt threads then torque to 35 ft/lb.

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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: Wed Aug 24, 2016 4:56 pm 
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998cc
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Location: Brisbane QLD
If the block is already got 30thou over Pistons... What do I do to work out how much to bore to get 80thou over Pistons in there?
How would I communicate that to the machinist ?


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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: Wed Aug 24, 2016 8:15 pm 
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998cc
998cc

Joined: Mon Mar 10, 2014 11:38 am
Posts: 1139
Location: Tassie
Give him your 80thou pistons and say make these fit!
All he needs to know is that it will be 80thou over std

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1963 Morris 850 Smoke Grey
1963 Morris 850 Shadow Blue
1965 Morris Mini Smooth Van
1966 Morris Mini Van
1969 Morris Mini Deluxe Resto
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 Post subject: Re: 1220 auto build
PostPosted: Wed Aug 24, 2016 10:22 pm 
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Location: near Baulkham Hills, NSW
I would use Russell Engineering's +.080 pistons. These have 2 compression rings. Avoid pistons with 3 compression rings on a 1098 stroke crank, the ring lands are tiny width and break easy.
Ask Graham what the recommended bore clearance is when you buy them. Or, send the block down and let him bore and hone it.

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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: Tue Feb 20, 2018 11:47 pm 
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848cc
848cc

Joined: Sat Mar 01, 2014 2:29 pm
Posts: 267
Location: Maryborough, Qld
Any progress?


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 Post subject: Re: 1220 auto build
PostPosted: Sun Feb 25, 2018 8:09 am 
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998cc
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Location: Brisbane QLD
NOT850 wrote:
Any progress?
project was sold on last year mate . Hopefully the new owner has it going by now ....he never got back to me though ...


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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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