Re: Dummy Timing Chain Install Question

Posted by fred kanter On 2010/11/11 10:03:11

To Eric/Turbopacman:

I did not put forth any theories about nylon gear/aluminum sprocket equipped motors, what I did say was that I have taken apart motors with 100,000 miles with both nylon and iron sprockets , and found many to be in good condition. I stated facts that were personally observed. Yes, as you have experienced, nylon gears do fail.

My point was that while cars from the 20's/30's with 2" wide chains often needed replacement early, better metallurgy yields 100,000+ durability in modern engines with narrow chains and even nylon teeth yield high mileage.

The engine failure I have experienced with nylon tooth cam gears is from catastrophic disintegration of the nylon, not from wear. All were Ford products.

Fred Kanter