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| Hiw do I know if my engine is an A or A+. https://www.ausmini.com/forums/viewtopic.php?f=2&t=99545 |
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| Author: | Woody_Woodvine [ Sun Dec 22, 2019 7:29 pm ] |
| Post subject: | Hiw do I know if my engine is an A or A+. |
I bought a 1275cc engine that came out of a mortis mini 1300 auto and am going to do a rebuild, but the rebuild kits on Minisport there are 2 the 1275 not A+ and the copper s 1275. Is mine an Non A+? |
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| Author: | gtogreen1969 [ Sun Dec 22, 2019 8:23 pm ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
Engine prefix 12H169H, 12YAAH and 12YEAH are A series Automatic engines (not A+). The casting number at the back of the block is probably 12G 1279 which is the standard 1275 A series Non S casting. |
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| Author: | Woody_Woodvine [ Sun Dec 22, 2019 9:53 pm ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
gtogreen1969 wrote: Engine prefix 12H169H, 12YAAH and 12YEAH are A series Automatic engines (not A+). The casting number at the back of the block is probably 12G 1279 which is the standard 1275 A series Non S casting. So it's not an A+. Ok thanks |
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| Author: | Bill B [ Mon Dec 23, 2019 1:00 pm ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
Woody_Woodvine wrote: I bought a 1275cc engine that came out of a mortis mini 1300 auto and am going to do a rebuild, but the rebuild kits on Minisport there are 2 the 1275 not A+ and the copper s 1275. Is mine an Non A+? That would have been a "dead" mini 1300? If you plan using the auto block in a manual setup, are you aware that some changes to the block are needed? There is an detailed explanation on Ausmini: viewtopic.php?f=25&t=90470 |
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| Author: | simon k [ Mon Dec 23, 2019 1:23 pm ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
you do need to be a little bit careful - the two different sets they're talking about there aren't really A+ v's A series, it's the size of the crankshaft's conrod journals - A+ used the larger size, however Morris 1300 engines came in both sizes. You need to identify the crankshaft before you order anything. |
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| Author: | TK [ Mon Dec 23, 2019 2:03 pm ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
Well there you go. I did not know that Morris 1300's came out in a small journal. I knew that the Morris 1100S did. |
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| Author: | simon k [ Tue Dec 24, 2019 9:17 am ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
TK wrote: Well there you go. I did not know that Morris 1300's came out in a small journal. I knew that the Morris 1100S did. I'm only going by the auto 1275 I have in my garage - it has a small journal crank - I don't know if it came from an 1100S or a 1300 my advice is still to identify the crank before ordering anything |
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| Author: | drmini in aust [ Tue Dec 24, 2019 10:54 am ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
1300 auto blocks were 12YEAH prefix. I've had a couple, both same, with large journal cranks. These came out after the 1100S manuals were obsolete (replaced by Morris 1500 ohc). 1100S auto early motors 12A169H were thin flange and had a small journal crank. |
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| Author: | TK [ Tue Dec 24, 2019 7:13 pm ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
So Morris 1300s didn't come out in both sizes? I had an original Morris 1300 and it was large journal too. |
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| Author: | drmini in aust [ Wed Dec 25, 2019 3:50 am ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
@TK, Small journal crank was long gone by the time Morris 1500 manual and 1300 auto cars replaced the 1100S. |
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| Author: | Woody_Woodvine [ Sun Dec 29, 2019 8:57 am ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
Bill B wrote: Woody_Woodvine wrote: I bought a 1275cc engine that came out of a mortis mini 1300 auto and am going to do a rebuild, but the rebuild kits on Minisport there are 2 the 1275 not A+ and the copper s 1275. Is mine an Non A+? That would have been a "dead" mini 1300? If you plan using the auto block in a manual setup, are you aware that some changes to the block are needed? There is an detailed explanation on Ausmini: viewtopic.php?f=25&t=90470 |
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| Author: | Woody_Woodvine [ Sun Dec 29, 2019 9:00 am ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
simon k wrote: you do need to be a little bit careful - the two different sets they're talking about there aren't really A+ v's A series, it's the size of the crankshaft's conrod journals - A+ used the larger size, however Morris 1300 engines came in both sizes. You need to identify the crankshaft before you order anything.
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| Author: | gtogreen1969 [ Sun Dec 29, 2019 9:20 am ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
Large journal. Now just to get it measured and crack tested and machined and then start to worry about the bearings you need to buy. |
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| Author: | Woody_Woodvine [ Sun Dec 29, 2019 9:35 am ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
gtogreen1969 wrote: Large journal. Now just to get it measured and crack tested and machined and then start to worry about the bearings you need to buy. I wanted to get it up to 1380cc and I know it will need a new crank with a longer through, new pistons due to the larger bore. Do I still need need to get the right journals? |
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| Author: | TK [ Sun Dec 29, 2019 9:54 am ] |
| Post subject: | Re: Hiw do I know if my engine is an A or A+. |
a standard stroke with oversize pistons can get you to 1380. Remember to offset bore the block. Why do you need a new crank? |
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