Below is a
picture of the stock Supra turbo cam with 100,000 miles on it and the HKS cams
with 50,000 miles on it. I started having timing belt problems at 30,000 miles,
the teeth on the belt started to come off after only 20,000 miles on a new belt.
I replaced the tensioner and the pulley thinking that was the problem but 6
months later I started losing teeth on the belt again. This time after a thread
on the Suprafourms recommended checking the gears for wear I found the problem.
This was not money well spent Im very upset with HKS for making a substandard
product. With a stock gears back on the car, she runs better now that there
isn’t play in the belt. With the gear wearing down it affected my
timing.
Click on any photo to see a larger version