A good story about Cam Tensioners
#31
01-29-2012, 02:18 PM
Seasoned HDF Member
Here's mine at 90,000 miles!
#32
01-29-2012, 02:48 PM
What most people don't know is this:
The strong one piece crank went out with the EVO.
The problem with gear drives is that "if" your T/C pressed crank has a little extra run out, like a good percentage may have, you might eventually find broken gear teeth, and even more broken internal parts when she locks up. It's the same potential time bomb, just in a different package...
The strong one piece crank went out with the EVO.
The problem with gear drives is that "if" your T/C pressed crank has a little extra run out, like a good percentage may have, you might eventually find broken gear teeth, and even more broken internal parts when she locks up. It's the same potential time bomb, just in a different package...
Starting in 06, the moco started increasing the amount of maximum allowable tolerance for pinion shaft run out by quite a bit. Up through 05, chances are very good that your pinion shaft run out will be less than .003, and well within tolerance for gear drive cams. 06 or later, chances aren't as good.
#35
01-30-2012, 07:44 AM
They are not even remotely the same material as the spring loaded shoes. The spring loaded are a hard bakeolite type material and are often times porous under the finished surface, which causes excellerated deterioration as soon as the surface begins to wear and are prone to cracking. The new style shoes are similar to the material used on the tensioner in your primary to control slack in the drive chain. At the rate of wear I've seen on these new shoes for the mileage, I see no need to check more often than 50,000 mi intervals minimum.
#36
01-30-2012, 08:43 AM
Friends don't let friends drive with old tensioners! Here is my outer with 50k, the inner was just as bad. Too close for my comfort. Went with the Hydraulic upgrade and Andrews 21 cams. Could not be happier.
#37
01-30-2012, 09:44 AM
They are not even remotely the same material as the spring loaded shoes. The spring loaded are a hard bakeolite type material and are often times porous under the finished surface, which causes excellerated deterioration as soon as the surface begins to wear and are prone to cracking. The new style shoes are similar to the material used on the tensioner in your primary to control slack in the drive chain. At the rate of wear I've seen on these new shoes for the mileage, I see no need to check more often than 50,000 mi intervals minimum.
#38
01-30-2012, 09:59 AM
Seasoned HDF Member
Because of the amount of pressure that the spring loaded tensioners exert the softer material of the hyd unit would be worn out very quickly.
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