Hi
I got this 998 motor and I want to know what it is out of?
engine number is: 99H79P121027
Can anyone help?
Please help I am in the mess of engine block's everything except 1275
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| what is this out of? https://www.ausmini.com/forums/viewtopic.php?f=2&t=58526 |
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| Author: | mini is my ride [ Thu Nov 05, 2009 6:57 pm ] |
| Post subject: | what is this out of? |
Hi I got this 998 motor and I want to know what it is out of? engine number is: 99H79P121027 Can anyone help? Please help I am in the mess of engine block's everything except 1275
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| Author: | drmini in aust [ Thu Nov 05, 2009 6:58 pm ] |
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998 Clubby, around 1976. |
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| Author: | mini is my ride [ Thu Nov 05, 2009 7:03 pm ] |
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How can you tell? |
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| Author: | blue_deluxe [ Thu Nov 05, 2009 7:08 pm ] |
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The 99 mean it is a 998. The H means high compression i think The 79P would mean clubman. The rest is the engine number. |
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| Author: | drmini in aust [ Thu Nov 05, 2009 7:09 pm ] |
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The number prefix. Which is actually 99H791P, if you look again. Later ones (with the air injection pump etc) were 99H834AJH prefix. |
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| Author: | Morris 1100 [ Thu Nov 05, 2009 7:12 pm ] |
| Post subject: | |
99 = 998cc H = Transverse engine 791 = Leyland Mini/Leyland Mini S from 75 to mid 76. P = Breather system The rest is just numbers. 
Nothing means Clubman. They ditched that name in 72. 
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| Author: | mini is my ride [ Thu Nov 05, 2009 7:25 pm ] |
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Ok so if thats the case, I thought that up until the mid of 1975 they used 1100 before being changed back to 998cc . I have a source for that info Watto from the mini experince mag Please note: the engine is in a 75 clubman or leyland mini Explain that please |
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| Author: | Morris 1100 [ Thu Nov 05, 2009 7:34 pm ] |
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mini is my ride wrote: Ok so if thats the case, The Zetland factory that made the 1100 motors closed in October 74. Some engines were assembled and fitted to the Enfield built cars until stocks run out sometime in the first half of 75 up till stocks of the 998's were imported from England.
I thought that up until the mid of 1975 they used 1100 before being changed back to 998cc . I have a source for that info Watto from the mini experince mag Please note: the engine is in a 75 clubman or leyland mini Explain that please The last 1100 motors in 75 had the engine number prefix 1015. The first imported 998 motors in 75 had the prefix 99H791P. There is no such thing as a 75 Clubman. It is either a Leyland Mini or a Leyland Mini S. |
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| Author: | mini is my ride [ Thu Nov 05, 2009 8:05 pm ] |
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Yeah I understand it’s a Leyland mini So does that mean even if it was made in May 75' it’s the original 998 engine? So where do you get your info? thank you for your time and help 
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| Author: | drmini in aust [ Thu Nov 05, 2009 8:34 pm ] |
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Watto is only human, so there are a few minor typos and inaccuracies in TME here and there. Morris1100 on the other hand is inhuman, he has 1st hand experience of that period of Leyland production. 
And, I had an engine the same as yours in a `76, and I have the later one I mentioned still, from a `78.
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| Author: | mini is my ride [ Thu Nov 05, 2009 8:38 pm ] |
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Hi Wow that’s amazing ,
Still disappointed with myself, I thought I could have got a car with an engine bigger than 998 but beggars can't be choosers especially when trying to keep original. I can't really knock the 998 either Thanks to both of you |
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| Author: | drmini in aust [ Thu Nov 05, 2009 8:41 pm ] |
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With a bit of work and $$$ you can turn a 998 into an 1188, or even a 1220.. with 60HP+ at the wheels, (NA) so don't knock them.
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| Author: | mini is my ride [ Thu Nov 05, 2009 8:51 pm ] |
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Thats insane thats a bore of at least 180 inch Have you done that? It would be high risk I guess I can't say much as I dont know much |
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| Author: | drmini in aust [ Thu Nov 05, 2009 9:03 pm ] |
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1220 is got by boring to 68.0mm and using a 1098 crank. So it's both bored and stroked.
Yes I've built 3x 1220 motors- 1 Mini and 2 A/H Sprite ones. They last OK if you keep revs to 6500-7000 max. 
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| Author: | mini is my ride [ Thu Nov 05, 2009 9:08 pm ] |
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ok thanks I once again learn something new, I dont mean to be annoying sorry if I am |
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