A few quick engine questions (morris minor)

Side valve, 803, 948, 1098., 1275 and Vizard mods

A few quick engine questions (morris minor)

Postby Dave254 » Mon Aug 26, 2013 8:23 am

A few quick and easy questions (at least they are if you know the answers!) I'm having a break from body work whilst rebuilding the engine and have picked up a few questions.
1 The engine label is marked as 10v/189e/h48706 I think the 10v makes it a 1098cc however the v5 shows it as a 1275cc, the engine has not been bored out so is it a 1098 with the engine size recorded wrong?
2 I'm off to buy a new gasket set for the rebuild, why are a lot of them marked as "conversion gasket" set, what does the conversion part mean and will they fit a standard engine?
3 I have damaged one of the pistons removing it (number 3) one of the piston rings was corroded and stuck to the bore. The bore is completely fine but I was a bit enthusiastic removing it and have damaged the piston. Can you buy single pistons as I don't fancy replacing all 4 of them for the sake off it
Thanks guys,
Dave
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Postby MM » Mon Aug 26, 2013 10:51 am

Hi Dave,

A 10V engine should indeed be a 1098cc - 1275cc engines started with 12...

Another way to tell is, does it have the rectangular tappet chest covers on the inlet manifold side (1098cc engines do), or is it a solid wall block like the 1275cc engines have?

Most gasket sets state what engine size it's for, so as long as you have the correct size, it should fit.

You can sometimes get lucky and buy individual pistons - autojumbles are your best bet.

Seeing as you have removed the piston, why not measure its diameter - a 1098cc one should be approx. 2.54" (64.5mm) across.
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Postby woodywoodchipper » Mon Aug 26, 2013 6:33 pm

conversion gaskets, are everthing but for the cylinder head which is sold as a separete set, so you need 2, one for top and one for bottom,

these guys may be able to help on the piston ,

 www.minispares.com


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Postby MM » Mon Aug 26, 2013 10:39 pm

They appear only to have +0.040" ones in stock:

http://www.minispares.com/product/Class ... sic/1098cc piston.aspx|Back to search
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Postby woodywoodchipper » Tue Aug 27, 2013 7:22 pm

try ringing them, they got me a set of standards, for 1098 with rings,

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Postby bmcecosse » Tue Aug 27, 2013 9:16 pm

Just ask around the Minor forums for a piston - once you KNOW what size it is  (ie Std/010/020 etc..).  Conversion set is all the block bits - but NOT the sump set or the head set......  as far as I remember anyway....  A Mini 1098 piston may not be any use to you - they were not fitted with circlips in later life, and you need circlip pistons...
 









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Postby Dave254 » Wed Aug 28, 2013 4:21 am

Thanks guys,
It turns out that it is a 1098 and that the v5 has been filled in incorrectly.
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