Crank Identity

[les]

Is this a marina/ital crank number please-----cam6421 ?

[philthehill]

Les
This is a 1275cc BL Marina crankshaft with Pt No: 12G 1303 embossed upon it.

The BL Pt No: for a 1275cc Marina crankshaft with bearings is 8G2744.
Unfortunately the BL parts list AKM0034 does not list a crankshaft as a separate item only as a crankshaft/bearing assy.
The BL Pt No: for a 1098cc Marina crankshaft is 8G2745 again as a crankshaft /bearing assy.
Hope the above is of help.
Phil[frame][/frame]

[bmcecosse]

Picture of the flywheel mounting flange will tell all.....

[les]

Hmm, the crank was in a 1275 in line A+ Block.

[philthehill]

Les
There are only two true in line (fore and aft) 1275cc crankshafts and they are the 1275cc Marina/Ital and the 1275cc Midget/Sprite crankshafts.
The Austin Maestro crankshaft and block has been and can be used in the fore and aft position after modification.
There has been a series of threads relating to the fitment and use of the Maestro 1275cc transverse engine on here.
A picture of the block and crankshaft especially the crankshaft tail would be appreciated.

This is a picture of a maestro engine that was on 'e' bay and converted to fore and aft use.

http://www.ebay.co.uk/itm/1-3cc-1275cc- ... 7675.l2557

Note the numbers just under the top edge of the block and the front engine mounting bolt holes on the front of the block under the temp transmitter.
Phil

[les]

Right I'll get some more pictures, I bought this unit years ago as an ital, the filter is in the right position for this engine, so assumed the crank was in order, it has 6 threaded bolt holes.

[bmcecosse]

If one dowel = Marina/Ital. If two dowels = Spridget. If Maestro it has a longer tail - and an external rubber seal arrangement on the rim of the flange.

[les]

I'll check it out, I can't find any reference to the number so far.

[philthehill]

http://www.mmoc.org.uk/viewtopic.php?f=4&t=30551

[les]

Well I've searched all my books but that number eludes me, I dismantled the engine myself so know it was complete and assembled ok.

[bmcecosse]

So - how many dowels ???

[les]

[frame][/frame][frame][/frame][frame][/frame][frame][/frame][frame][/frame]
Any clues here? Also engine number----12V 639ELZ. Not sure of this either.

[bmcecosse]

Marina crank

[philthehill]

Les
You have a Ital 'A' Plus 1275cc engine.
The crankshaft is Ital 'A' Plus 1275cc.

[les]

Thanks for your replies and patience, that is what is was bought as but the number on the crank threw me.
Anyone got a flywheel for this? I want to see what's involved in adapting it.

[philthehill]

Les
If you are not going to be transmitting oodles of power it would be easier to buy a ESM Marina to Minor already adapted flywheel.

http://morrisminorspares.co.uk/shop/pro ... da9cf0daf0

otherwise a one off steel flywheel from the likes of Peter May Engineering.

http://www.petermayengineering.co.uk/catalogue.htm

The Marina/Ital flywheel is way too big to fit inside the Minor bell housing and that is why the smaller ESM flywheel (modified 1098cc) is most suitable.

I hope that you are not going to use wheel studs (see picture above) to secure the flywheel

Phil

[philthehill]

Les
Looking at the engine list in the link below
You will see your engine number listed as 1275cc Marina with the 12V639EHZ 0000
Whether this means that your engine is a low compression or you have mis-read the H for a L who knows.

http://mgaguru.com/mgtech/engine/be100.htm

Phil

[les]

Thanks for the links Phil. I worry about the number of holes drilled into the modified flywheel ! Can imagine the centre disintergrating, well maybe a slight exaggeration! I just Wondered if the marina one could be machined down. What do you reckon on the modified ones? I doubt I'll be going overboard on the tuning, actually I hope to add a shorrocks to it, for a while at least, just to try it out. Just read your latest reply, the letter is L ( maybe from a van) I'm going to read the link now.
Don't be silly Phil, not wheel studs, I'm hoping to use snug fitting split pins if I can get behind to open them out!

[bmcecosse]

I 'gave away' a Marina flywheel a couple of weeks ago - so the lad could have it turned down and fitted with a Minor ring gear. If you do drill a Minor flywheel - make sure the holes are really 'snug' on the shank of the retaining screws - since there will be no register to locate the fly on the Marina crank. I do wonder though if it would be possible to machine up a steel ring to fit in the Marina crank register - and machine a matching register in the Minor fly - trapping the ring between and so holding the fly concentric to the crank?

[les]

I'll experiment with that Roy if I use a minor flywheel but would like to at least see a marine one and its potential.
At least someone made use of your flywheel----- just a shame it wasn't me!