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| 1275LS engine Prefix? https://www.ausmini.com/forums/viewtopic.php?f=2&t=87655 |
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| Author: | MINI66 [ Thu Nov 06, 2014 2:32 pm ] |
| Post subject: | 1275LS engine Prefix? |
Hi there I have been doing a little research about the engine in my 66 Deluxe. (It is a 1275 and I have fitted an SC12 blower). I purchased the block which was listed as a 1100S engine off ebay (in 2005). The engine number is 12H902UH which would possibly suggest a 1275LS and not an 1100S as listed. Does anyone more knowledgable know what it is from?? Cheers Rick P.S - Incidently, my 2nd car was a 1275LS HI Ho in 1995 and was awsome (Before it ended up on it's lid!) (First car was a 1961 Morris 850 powerhouse) |
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| Author: | bluewhitecoopers1968 [ Thu Nov 06, 2014 7:19 pm ] |
| Post subject: | Re: 1275LS engine Prefix? |
I believe the 1275 LS blocks had pushrod covers at the back of the block, 1100s are solid. |
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| Author: | drmini in aust [ Fri Nov 07, 2014 5:56 am ] |
| Post subject: | Re: 1275LS engine Prefix? |
Nope it's the GTs that had covers on the back (Cooper S block). 1275LS block is solid, looks like an 1100S one, but different engine prefix. 1100S (most) is 12YD/Ta/H prefix, I'm not 100% sure of the 127LS one. But 12H/902/U/H rings a bell. Mini King book agrees. |
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| Author: | 1970cooper [ Fri Nov 07, 2014 6:04 am ] |
| Post subject: | Re: 1275LS engine Prefix? |
12H902UH engine is a 1275LS engine .That is what's in my 78 LS. Regards Felix |
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| Author: | MINI66 [ Fri Nov 07, 2014 7:42 am ] |
| Post subject: | Re: 1275LS engine Prefix? |
Sweet. Worth more than 1100s engine I would imagine. Yes, the block is solid (no pushrod covers). Good to know as I would like to restore a 1275LS at some stage. Might be able to pickup a body less engine some day. (I know, he's dreaming) |
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| Author: | 1275LS [ Fri Nov 07, 2014 11:51 am ] |
| Post subject: | Re: 1275LS engine Prefix? |
12H902 is a 1275LS prefix. Mine is 12H897UH whcih doesn't match any codes I have found. Both of the mechanics I have spoken to about it say it is correct and someone has mis-stamped it. As it is an early 1275LS (July) it may be the prototype  or early in the batch before they knew what the number should be. Going out on a limb there but hey who knows..
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| Author: | MINI66 [ Fri Nov 07, 2014 1:15 pm ] |
| Post subject: | Re: 1275LS engine Prefix? |
OK - Thanks everyone. Good to know. It is a strong engine and 40thou over bore. Has had 9psi of non intercooled boost thrown into it for a few years now with no dramas. |
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| Author: | drmini in aust [ Fri Nov 07, 2014 1:17 pm ] |
| Post subject: | Re: 1275LS engine Prefix? |
1275LS wrote: 12H902 is a 1275LS prefix. Mine is 12H897UH whcih doesn't match any codes I have found. Both of the mechanics I have spoken to about it say it is correct and someone has mis-stamped it. As it is an early 1275LS (July) it may be the prototype or early in the batch before they knew what the number should be. Going out on a limb there but hey who knows..John Smidt's Mini King book also lists 12H897UH as a 1275LS motor. |
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| Author: | 1275LS [ Fri Nov 07, 2014 5:33 pm ] |
| Post subject: | Re: 1275LS engine Prefix? |
Thanks Doc. |
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