04-01-2020, 06:56 PM
(This post was last modified: 04-01-2020, 07:07 PM by Denis Sweeney.)
When I finished my restoration of my early type 36 Ruby 15 months or so ago I had the same problem.
The original fan belt I fitted came with the car “new” in its original Ferodo box .....but 30+ years old, this constantly ran off the back of the top pulley which was also original, in the end it disintegrated before the car was eventually back on the road.
I chose to replace both the belt and the top pulley, with no other alteration to alignment, it all runs fine.
Having not found any discernible differences between the new and original pulley, my guess was the rubber in the original belt had simply perished.
Freudian slip, I did mean bottom pulley.
Apologies.
The original fan belt I fitted came with the car “new” in its original Ferodo box .....but 30+ years old, this constantly ran off the back of the top pulley which was also original, in the end it disintegrated before the car was eventually back on the road.
I chose to replace both the belt and the top pulley, with no other alteration to alignment, it all runs fine.
Having not found any discernible differences between the new and original pulley, my guess was the rubber in the original belt had simply perished.
Freudian slip, I did mean bottom pulley.
Apologies.