3 CV joints in 13 Months

I guys
Well i broke down again yesterday due to the inner passanger side cv joint going  
This is the second time this has happened and have now put on my 3rd cv joint in 13 months
The whole cage had shattered yet again, i did have a broken front engine mount which was sorted in December, don't know if that was the course of the prob or not, I don't rag my car i chill with her, so am confused as to why the cv joint went yet again, any idea as to why this happens???  :dontknow:

My car is a 1990 MK1 Golf Convertable, the CV joint is the smaller of the sizes (90mm)

Any help would be great on this as i realy don't want to have to put a 4th cv joint on in another 6 months

whare are you buying them from, cheapie ones arnt the best quality

shouldn't 1990 be 100mm driveshaft ?

i think 100mm was only on the 1.8 carb+injection ones, may be wrong. could possibly explain it if 90mm cvs are being fitted to 100mm shafts tho…

Has your car been lowered? The reason i ask is my mates mk1 was lowered by 110mm and he got through  4 inner cv's on the passenger side. We eventually found the problem was the angle of the drive shaft was at such a angle it was protruding out the back of the cv joint causing the cage to disintergrate. He fixed it by getting a machine shop to shave 5 mm from the end of the shaft.