Morris Minor Owners Club

The only differences I am aware of between the pre 'A' Plus engine block and the 'A' Plus engine block is the way the distributer is secured and the additional ribbing on the outside of the block. Except for the distributer all parts are interchangeable between pre 'A' Plus and 'A' Plus engines. Som...

The 1275cc water pump was and still is fitted with a variety of impellors and what is fitted depends largely upon the manufacturer/supplier. They range from the small impellor to large impellor and from pressed steel impellor to cast impellor. The preferred water pump way back was the Cooper S which...

The standard 'A' Series water pump with by-pass stub will fit the 1275cc Ital engine without any problem This is the one I use which has the large impellor so circulates more coolant especially to the rear of the head:- http://www.minispares.com/product/Classic/Cooling_heating/Water/Pumps/GWP134.asp...

All of the BMC/BL breather set ups are after thoughts - mainly incorporated to continue sales to the USA. At one stage the BMC/BL 'A' Series cylinder heads incorporated air injection into to the engine to reduce emissions for continued sales in the USA but the equipment reduced the engine power dras...

If the pipe comes out of the carb body at an angle (similar to the one for sale in the 'e' bay link below) it as mentioned above the connection to the sealed breathing system. https://www.ebay.co.uk/itm/SU-HS2-Carb-AUD359-For-Mini-Reliant-Robin-850-Good-Condition-vintage/153487752172?hash=item23bc95...

Here is the list of standard production heads: The one that is missing from the list is the 12G1805 late Cooper S /1300 GT etc variation of the 940 head. 12G1805 is stamped on the head by the thermostat opening. cyl head details.jpg You can do the imperial to metric conversion :wink: The numbers may...

Your head appears to have been lightly skimmed. already Ex factory the head should be 2.75" or 69.85mm from top to bottom face. I would suggest that you can take a total of 0.060" off the face of the head without any difficulty. The limiting factor is the oil transfer cross gallery which runs across...

The number is 133 which is in all probability the casting batch number or casting identifier.

If you look on 'e' bay at 940 heads you will see a variety of secondary numbers which though different do not indicate differences in the basic 940 head.

N Well done in getting those pistons installed and well done for your perseverance. I have many tools that have only been used once or twice but they are an important part of my tool kit. Just when you think that you do not need them anymore a job will pop up and you will be glad that you have the t...

Declan Thank you for the reply. Goodness knows how they managed years ago on those engines which had cylinder head and block as one. A side step issue - those 4 ring BMC piston that require new rings and there are only 3 ring sets available - the bottom compression ring can be left off without detri...

Declan To clarify - did you put the jubilee clip around the outside of the ring clamp at the bottom so as to reduce any spread of the clamp or did you just use a jubilee clip on its own? My piston ring clamp of the same style is a Draper PRC2 57mm -125mm. The bottom band is 7mm from the bottom of th...

That clamp certainly does not look to be concentric around the piston/rings.

You say that you had no problems when using the clamp previously so there is certainly something strange going on now.!

There is no specification given in the Marina/Ital BL wksp man for the depth of piston ring groove.

All I can suggest is that you measure the width of the ring and measure the depth of the piston ring grove and compare the two.

To keep you going you could temporarily rob the adapter bolt off a rear cylinder. The adapter bolt Pt No: 27H7167 is the same item as fitted to the master cylinder and the rear brake cylinder. The banjo is also the same Pt No: 27H7189. To remove and replace the rear cylinder banjo and bolt is easier...

The ring orientation is only a consideration as regards the gap relationship to the ring above/below. The ring gaps should be at least 45 degrees to the ring above/below. With the wrap round ring clamp it is not so important to get the ring gaps away from the clamp gap as it would be with the motorc...

Thank you for the reply. I have never had any problems fitting pistons and rings into the engine bores using the type of clamp you are utilising. The clamp is suitable for both standard and oversize pistons. I use the same clamp for fitting pistons/rings into 74mm diameter bores without difficulty. ...

You should not have these problems - the pistons & rings should be easy to fit into the bores. It may seem a silly question but are you using the piston ring clamp up the right way??????? Looking at your pictures I cannot determine if the clamp is the right way up or not when fitted to the pistons. ...

It does state in the link above at the top of the home page the days of opening and the opening times.

Les
You must have a nice dry garage

Phil

Your piston ring clamp does not appear to be fitted square to the piston. Fit the piston ring clamp to the piston with the bottom of the clamp at the bottom of the gudgen pin - but do not fully tighten the clamp. Place the piston with clamp fitted into the bore. Lightly knock the piston down to squa...