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| big bore head precariously balanced on a small bore block https://www.ausmini.com/forums/viewtopic.php?f=2&t=7536 |
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| Author: | cush [ Wed May 25, 2005 1:10 pm ] |
| Post subject: | big bore head precariously balanced on a small bore block |
Is the 940 head on a small bore block worth it? In bang for buck terms. Other than the block pocketing, is there anything else that needs to be cut/shaved/waxed  to get the head to fit. I vaguely recall hearing something about waterways needing re-alignment.
What's it cost in the end, head plus butchery. My new signature got me thinking... Morris 850 with 998 engine with 1098 internals..... may aswell finish "the mongrel" off with a 1275 head 
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| Author: | Gadgets mini [ Wed May 25, 2005 1:27 pm ] |
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Cushy when I read the subject line I thought you may of been talking about an ausmini member or perhaps yourself. 
the mods you are talking about i'd love to see a pictures in progress thread later
cheers Gadget |
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| Author: | WhoDat [ Wed May 25, 2005 2:17 pm ] |
| Post subject: | |
Nah won't fit - I'll do you a swap for a 202
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| Author: | cush [ Wed May 25, 2005 2:18 pm ] |
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you can swap all you like... i don't have a 940 head...
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| Author: | WhoDat [ Wed May 25, 2005 2:22 pm ] |
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Bugger - was worth a try! 
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| Author: | cush [ Wed May 25, 2005 2:23 pm ] |
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dont' you have a 1275 anyway? |
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| Author: | WhoDat [ Wed May 25, 2005 2:27 pm ] |
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Well I hve one 1275 but there's always room for more 
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| Author: | cush [ Wed May 25, 2005 2:35 pm ] |
| Post subject: | |
just in case people forgot
Is the 940 head on a small bore block worth it? In bang for buck terms. Other than the block pocketing, is there anything else that needs to be cut/shaved/waxed Shocked to get the head to fit. I vaguely recall hearing something about waterways needing re-alignment. What's it cost in the end, head plus butchery. My new signature got me thinking... Morris 850 with 998 engine with 1098 internals..... may aswell finish "the mongrel" off with a 1275 head |
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| Author: | cush [ Wed May 25, 2005 2:40 pm ] |
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also... if i got the 1275 head, do i need to get 1275 LCB's to go with it... |
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| Author: | drmini in aust [ Wed May 25, 2005 8:00 pm ] |
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940 head on a pocketed block... Do it. 
Back in the 60s BMC UK offered it as a go-faster kit for 850 and 998..
I had one years ago on a 1098 bored to 1220cc, in a light 850. Works 544 cam, twin Amal Monobloc carbs- then twin HS4s, it was revved (too often) past 8500 and did low 16s at Castlereagh dragstrip. It was fun, while it lasted. At 20,000 miles, a circlip broke, gudgeon pin scored the bore, new crank had 8 cracks already. Oh well... I then got a 1275, but it didn't go as hard.
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| Author: | miniimports [ Wed May 25, 2005 8:56 pm ] |
| Post subject: | pocketed block |
yeah i agree with the dr,i had a 998 with a full 12g940 race head and scatter pattern race cam on it years ago and it rev'd harder than my 1380 motor which was a similar spec.i think on dyno it made 54 kw at the wheels which is unreal for a 998 only thing extra than pocketing block is possibly filing down the water pump alloy housing on its topside as they sometimes wont let the head seal down properly(after 2 blown headgaskets found this out) might do another of these engines as i have a 997 cooper motor with pockets in it already with a 998 crank and centre main strap mmmmmmmmmm |
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| Author: | cush [ Thu May 26, 2005 9:46 am ] |
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DO EET 
right.... so the next steps are .. What does it take to get the block pocketed? casho , etc.. is there any other work other than the pocketing needed? How much is a stock 940 these days? and who's got one? and , again , i use the 1275 head gasket and lcb exhaust?
would my 1.5" su be ok? |
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| Author: | miniimports [ Thu May 26, 2005 11:24 am ] |
| Post subject: | casho needed |
yes cash is the needed thing to do this no other work is needed(just check water pump clearance) stock 940 heads are plentiful i have a few of them for $180 each complete with valves and springs inn s/hand condition 1.5 inch carby is ok but if you want more power chuck on a 1 3/4 ($120 for a hif series :ie float bowl built onto bottom of carb )or a weber big $$$$ regards josh |
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| Author: | cush [ Thu May 26, 2005 11:52 am ] |
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noice.... yaw just the boize noize, miniimpawts.. |
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| Author: | drmini in aust [ Thu May 26, 2005 7:42 pm ] |
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I have heard that a stock 940 head outflows a worked 295 head, so there, for wot it's worth.
BTW you don't need dirty big valves for this on a 998/1098, stocko 1100S or 1275LS (or stock Metro) ones are fine. Fit decent double valve springs and a cam though.
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