1275cc A+ Engine for sale

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ampwhu
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1275cc A+ Engine for sale

Postby ampwhu » Mon Dec 03, 2018 6:36 pm

engine was removed around 5 years ago from a running car. It has sat in a mate's garage since. Plan was to put it in a car, but it never happened.

it turns freely with some compression, so its not seized. judging by under the rocker cover, the engine looks to be in ok condition, with possible regular oil changes. I cant confirm this though. the rear backplate has snapped where the started motor would fit, so you'll need to source another.

so its for sale. we all know the worth of these, you just have to look on ebay to find that out. I'm not going to ship it. It either needs to be collected or depending on location, I may be able you help with delivery. I can of course help loading this end. I'm not desperate to sell, so if it doesn't sell, i'll push it to the back of my workshop.

I am located in New Malden, Surrey. Postcode is KT3
I'm looking for £425 with no offers.
1275 pic 2.JPG
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Attachments
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1275 pic 1.JPG
1275 pic 1.JPG (56.24 KiB) Viewed 453 times

les
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Re: 1275cc A+ Engine for sale

Postby les » Mon Dec 03, 2018 6:54 pm

I don't think it's an A+, my understanding is an A+ has a ribbed block.


ampwhu
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Re: 1275cc A+ Engine for sale

Postby ampwhu » Mon Dec 03, 2018 7:24 pm

Ok, I didn't know that.

les
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Re: 1275cc A+ Engine for sale

Postby les » Mon Dec 03, 2018 9:05 pm

It's still a useful engine for someone.


irmscher
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Re: 1275cc A+ Engine for sale

Postby irmscher » Mon Dec 03, 2018 11:16 pm

Isn,t it a 1300 Marina engine.

mgdavid
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Re: 1275cc A+ Engine for sale

Postby mgdavid » Tue Dec 04, 2018 12:38 am

irmscher wrote:
Mon Dec 03, 2018 11:16 pm
Isn,t it a 1300 Marina engine.
Yes, but also looks like it's already been in a Morris 1000 - the fan is not Marina, it has the Morris / Midget front plate, and that clutch IIRC is Morris or 1098 Spridget. It may well have a Midget sump too, I can't really see if the Marina-type extension plate is there or not.
midget1380@btinternet.com

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Re: 1275cc A+ Engine for sale

Postby philthehill » Tue Dec 04, 2018 7:48 am

mgdavid is correct in that the engine appears to have been converted and previously fitted to a in-line BMC/BL vehicle.
The engine whilst mated with the thick rear engine plate is fitted with a 948cc flywheel and clutch assy.
The 948cc 6 spring clutch assy is not sufficiently robust to transmit the 1275cc engine power long term and needs to be changed to a minimum of the 1098cc clutch assy which may involve replacing the flywheel as the bolts of the 1098cc cover have a different PCD.
It is a pity about the engine rear plate as a replacement conversion plate from ESM or the 1275cc Midget/Sprite plate are not cheap.
Having enlarged the side photo of the engine I also cannot make out if it still has the Marina sump with extension plate but no matter as the extension plate can easily be shortened to suit. The Midget and Marina/Ital sumps are interchangeable.

I consider that the asking price is fair and reasonable.

Phil


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Re: 1275cc A+ Engine for sale

Postby midget » Tue Dec 04, 2018 8:59 am

Are we sure that it is not a midget? I can't see the oil pressure pick up point?
John

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Re: 1275cc A+ Engine for sale

Postby midget » Tue Dec 04, 2018 8:59 am

Are we sure that it is not a midget? I can't see the oil pressure pick up point?
John

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Re: 1275cc A+ Engine for sale

Postby midget » Tue Dec 04, 2018 8:59 am

Are we sure that it is not a midget? I can't see the oil pressure pick up point?
John

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Re: 1275cc A+ Engine for sale

Postby midget » Tue Dec 04, 2018 8:59 am

Are we sure that it is not a midget? I can't see the oil pressure pick up point?
John

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Re: 1275cc A+ Engine for sale

Postby philthehill » Tue Dec 04, 2018 9:09 am

It is not a Midget 1275cc engine as the oil filter is in the wrong position and the block has the Marina engine mounting points halfway down the block.
The oil pressure pick up point is positioned just below the oil filter on the Marina engine and cannot be clearly see even without the distributor fitted.
Pictured below is a 1275cc Marina/Ital 'A' Plus engine. The additional ribbing on the block can be discerned.
The sump to bell housing strengthening plate can be clearly seen.
A Plus 5..JPG
A Plus 5..JPG (1.59 MiB) Viewed 366 times


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Re: 1275cc A+ Engine for sale

Postby midget » Tue Dec 04, 2018 11:38 am

Yes,sorry I forgot that. Mechanical fuel pump too, although that could be added.
John

ampwhu
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Re: 1275cc A+ Engine for sale

Postby ampwhu » Tue Dec 04, 2018 5:15 pm

Phil, if your on about the small plate at the back of the sump with 2 bolts holes in, then yes, the engine does have this fitted.

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Re: 1275cc A+ Engine for sale

Postby philthehill » Tue Dec 04, 2018 7:39 pm

Thank you for the confirmation that the sump is Marina/Ital.
I could never see the point of the plate as the holes in the plate are slotted and the sump is not precision fitted so in theory there could be articulation between the Marina/Ital engine and gearbox bell housing even with the plate and bolts fitted.
The 1275cc Midget/Sprite managed without the plate but the gearbox of the Marina/Ital weighs about 6 times heavier than that of the Midget/Sprite so I suspect someone came up with the bright idea to fit the plate to resist articulation between engine and gearbox.
As they say 'every little helps'
Phil


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Re: 1275cc A+ Engine for sale

Postby ampwhu » Wed Dec 12, 2018 7:16 pm

would I be right in thinking that the parts for the 1275 mg midget will fit the marina 1300 engine?

things like bearings, shells, pistons, pumps etc.

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Re: 1275cc A+ Engine for sale

Postby philthehill » Wed Dec 12, 2018 8:16 pm

Some parts are interchangeable and some are not.

The main difference is in the crankshaft and con rods.

The main journals for both 1275cc MG Midget/Sprite and 1275cc Marina/Ital are the same.

The big end journals are different sizes. The Marina/Ital big end journals are bigger to compensate for the Marina/Ital using a lesser grade steel in the manufacture of the Marina/Ital crankshaft.

The big end journals of the 1275cc Midget/Sprite are smaller because the crankshaft is made from a much better grade steel. Originally it was made from EN40 and Nitrited - subsequently down graded to EN16T (T = Tuftrided).

Therefore you have to use 1275cc Marina/Ital connecting rods with a Marina/Ital crankshaft

and

1275cc Midget/Sprite connecting rods with a Midget/Sprite crankshaft.

You will have to use the relative shells to the relative crankshaft due to the difference in size.

The 1275cc Pistons can be used with either rods.

The camshaft for either engine can be slot drive or spider drive to the oil pump so you will have to choose an oil pump to match the camshaft.

At the front of the block the camshaft drive for the 1275cc Marina/Ital is simplex chain and tensioner. For the 1275cc Midget/Sprite the drive is via duplex chain without tensioner.
Parts are interchangeable as sets but the duplex chain can benefit from having the chain tensioner fitted.

The distributer, distributer drive and distributer mountings are different and cannot be interchanged.

The Marina flywheel is too big to fit inside a Minor/Midget/Sprite bell housing and needs to be replaced with either a 1275cc Midget/Sprite flywheel/clutch assy or use a ESM modified flywheel.

The top end (940 head) is fully interchangeable but rockers must be changed in full sets.

The camshaft fitted to the Midget/Sprite is the same as fitted to the Marina/Ital so no problems there.

Any other questions please ask.

Phil


ampwhu
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Re: 1275cc A+ Engine for sale

Postby ampwhu » Wed Dec 12, 2018 8:24 pm

thanks for the comprehensive reply Phil. If nobody wants to buy the engine, i'll mothball it until I have got the parts to rebuild it.

I'll then slot it into my '53 S2 further down the line.

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Re: 1275cc A+ Engine for sale

Postby Admin » Sat Dec 15, 2018 10:21 am

philthehill wrote:
Wed Dec 12, 2018 8:16 pm
Some parts are interchangeable and some are not.

The main difference is in the crankshaft and con rods.

The main journals for both 1275cc MG Midget/Sprite and 1275cc Marina/Ital are the same.

The big end journals are different sizes. The Marina/Ital big end journals are bigger to compensate for the Marina/Ital using a lesser grade steel in the manufacture of the Marina/Ital crankshaft.

The big end journals of the 1275cc Midget/Sprite are smaller because the crankshaft is made from a much better grade steel. Originally it was made from EN40 and Nitrited - subsequently down graded to EN16T (T = Tuftrided).

Therefore you have to use 1275cc Marina/Ital connecting rods with a Marina/Ital crankshaft

and

1275cc Midget/Sprite connecting rods with a Midget/Sprite crankshaft.

You will have to use the relative shells to the relative crankshaft due to the difference in size.

The 1275cc Pistons can be used with either rods.

The camshaft for either engine can be slot drive or spider drive to the oil pump so you will have to choose an oil pump to match the camshaft.

At the front of the block the camshaft drive for the 1275cc Marina/Ital is simplex chain and tensioner. For the 1275cc Midget/Sprite the drive is via duplex chain without tensioner.
Parts are interchangeable as sets but the duplex chain can benefit from having the chain tensioner fitted.

The distributer, distributer drive and distributer mountings are different and cannot be interchanged.

The Marina flywheel is too big to fit inside a Minor/Midget/Sprite bell housing and needs to be replaced with either a 1275cc Midget/Sprite flywheel/clutch assy or use a ESM modified flywheel.

The top end (940 head) is fully interchangeable but rockers must be changed in full sets.

The camshaft fitted to the Midget/Sprite is the same as fitted to the Marina/Ital so no problems there.

Any other questions please ask.

Phil
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