Morris Minor Owners Club

Anyone know the Ferodo fan belt number for a 1962 948cc Minor please?

Standard dynamo or converted to alternator? The belts are slightly different.

Dynamo.

BMC Part Number: 3H2134. Later re-numbered to 2A414 & 2A801.
Ferodo Part Number: V500

https://www.ebay.co.uk/itm/Morris-Minor ... OSwIwtfBLe~

http://www.oldengine.org/members/diesel ... doMan1.htm

That appears to be Series II only which had a thicker belt. There seems to be some difference between the 948 and 1098 fan belts, but I'm not sure what.

See this link:-
https://www.moss-europe.co.uk/shop-by-m ... 51-71.html

V500 is NOT the right belt for the 1000. It is indeed the thick belt for the Series II.

The correct belt for a 948 engine appears to be Unipart GFB102.

Interestingly, the Mintex belt WFT 319 is listed to fit a 1098 Minor engine from 1963, but a 948 Minor is not listed in spite of said belt's suitability for an A35 and A40 948. But WFT 319 is also listed for a 5 cwt. Minor van from 1957.

Bizarre. I am still no closer to a definite answer if the 948 and 1098 belts differ. There's probably not much in it, but there could be an important subtle difference in V angle or belt length.

JOWETTJAVELIN wrote: ↑Sun Oct 25, 2020 9:21 pm That appears to be Series II only which had a thicker belt. There seems to be some difference between the 948 and 1098 fan belts, but I'm not sure what.

Are the 1098blocks a slightly different depth, or just a larger bore.
That's the only reason I can think of for there to be a different size.
A different depth/height to the block would chance the overall size of the triangle formed between the 3 pulley centres.
But there again, any difference is probably so small the adjustment to tighten the belt would likely cope with it

Part way through Series III production, around 1960 a higher output dynamo was introduced. It has a smaller pulley to run at a higher RPM. Thus the belt is a little shorter. They higher output dynamo body has a step down in diameter and the older one has a straight cylindrical body.

There is a limit to the rpm a dynamo can continually run at.
If the dynamo is run at too high a revs the commutator can fly to pieces.
To overcome the problem BMC/BL fitted a larger diameter pulley to reduce the rotational forces acting on the commutator so keeping it all together.