Info needed: Morris C8 radiator

[pauldavies]

Thanks for the info Guy and yes I will have a closer look but the belt is nice and tight with no slippage.

[pauldavies]

Had a look at the adjuster assembly and I have 15mm give in the belt which is about right, to have any less would put pressure on the bearings.

[Richard Farrant]

Originally Posted by pauldavies

Had a look at the adjuster assembly and I have 15mm give in the belt which is about right, to have any less would put pressure on the bearings.

Hi Paul
In my experience I would say the belt is too narrow and not driving on the flanks but on its inner face and it will be prone to slipping. The outside of the belt should be nearly flush with edge of pulley. Take a photo of crank pulley so we can see how belt sits. I think this is what is causing your problem, belt slip.

[Mike K]

I discovered that modern V belts don't always match well with the older type pullies. There is a standard for V belts that's been around many years , the "B" type is commonly seen in older machinery.

My series 1 Land Rover is always a problem, finding the correct belt . I have fitted a modern belt that functions but somehow the modern belts don't quite fit correctly, the new belt makes a squeeling sound , as if something is rubbing . I believe the series 1 club in the UK had a special batch of belts made .

Yes I agree with the comments, that C8 belt isn't sitting as it should be , the profile is too narrow or the "v" angle isn't correct.

[Richard Farrant]

Originally Posted by Mike Kelly

I discovered that modern V belts don't always match well with the older type pullies. There is a standard for V belts that's been around many years , the "B" type is commonly seen in older machinery.

My series 1 Land Rover is always a problem, finding the correct belt . I have fitted a modern belt that functions but somehow the modern belts don't quite fit correctly, the new belt makes a squeeling sound , as if something is rubbing . I believe the series 1 club in the UK had a special batch of belts made .

Yes I agree with the comments, that C8 belt isn't sitting as it should be , the profile is too narrow or the "v" angle isn't correct.

Hi Mike,
You are correct on the belt V-angles. The standard A,B,C etc used on machinery and general engineering is still around and a lot of vehicle and engine makers used them, but, there was another British Standard for Automotive belts with a slightly different angle, no longer available now, I find that Austin, Morris and Rootes group engines were on this standard, and probably many others. The replacement belts are a compromise, and usually touch on outer edge, but will bed in without issues.
Looking at Paul's photo, as he was unaware that the pump pulley was adjustable, then I assume it is still set for an old belt, and it is the crank pulley that will define that. It would be impossible to fit the correct width belt without opening up the top pulley first, so my reckoning is the pump and fan was not turning fast enough as the belt was driving on the inner circumference and losing grip at times. The new belt needs to fit the crank pulley and likely will stand proud by about a millimetre or so, not sure if it would be a B or a C section.

[pauldavies]

Lots of info to take in and hopefully the picture has uploaded, what kind of fan-belt do you suggest Richard? Difficult to find old belts these days, I will take it off tomorrow after the Anzac service and will go ahead with replacing the individual bits as they are worn. Spring I should have an answer on Wednesday for replacement.

[Richard Farrant]

Originally Posted by pauldavies

Lots of info to take in and hopefully the picture has uploaded, what kind of fan-belt do you suggest Richard? Difficult to find old belts these days, I will take it off tomorrow after the Anzac service and will go ahead with replacing the individual bits as they are worn. Spring I should have an answer on Wednesday for replacement.

Hi Paul.
You need to determine the width of the top of the Vee on the crankshaft pulley. If approx. 16mm, then try a B section belt, but if 22mm then use a C section belt. The supplier should be familiar with B and C section belts as it is an International designation. As for length, you will need to open up your pump pulley and when belt is fitted the sheaves are adjusted up and engine turned over a few times, then recheck adjustment. When the belt reached the top of the vee on pump pulley it is near end of adjustment.

From what I have read here you fitted the belt without opening the adjustable pulley, is that is correct?

A Morris C8 owner might know the replacement belt number.

This might be of interest:
http://www.gatesaustralia.com.au/~/m...urope-2004.pdf