my66cruiser
Well-known member
- Joined
- Sep 17, 2010
- Messages
- 83
Back in the day Ford used a nylon surface or covering on the timing chain cam gear sprocket teeth. I heard doing so made the engine quieter.
Anyway, recently on my '69 Mustang my timing chain was stretched and my car skipped a few teeth (so I got surprised one day and was not able to start the motor). Long story short, I replaced the timing chain and sprockets. But some of the nylon on the old cam sprocket was gone - broken off or disintegrated.
I was happy until my cousin asked if I dropped my pan and cleaned out all of the bits of nylon.
I am bringing this up because the 390 motor that most of you have ( and so do I on my T-Bird ) also used the same type of timing chain cam gear with the nylon on the teeth surfaces.
My questions are:
1) Is the missing broken off nylon a concern due to blocked oil passages, or does the oil filter capture all of the bits over the years, or does the heat of the motor make the nylon melt and become part of one's oil?
2) If the bits are not caught in the oil pump screen, where are they? Did they get removed when you do your many oil changes over the decades?
3) Even if you replace your timing chain and sprockets with new ones, the nylon bits are still in your motor, right? Now what?
4) How do you tell if this is a problem, low or no oil pressure, an overheating motor?
Hope someone benefits from this.....
Anyway, recently on my '69 Mustang my timing chain was stretched and my car skipped a few teeth (so I got surprised one day and was not able to start the motor). Long story short, I replaced the timing chain and sprockets. But some of the nylon on the old cam sprocket was gone - broken off or disintegrated.
I was happy until my cousin asked if I dropped my pan and cleaned out all of the bits of nylon.
I am bringing this up because the 390 motor that most of you have ( and so do I on my T-Bird ) also used the same type of timing chain cam gear with the nylon on the teeth surfaces.
My questions are:
1) Is the missing broken off nylon a concern due to blocked oil passages, or does the oil filter capture all of the bits over the years, or does the heat of the motor make the nylon melt and become part of one's oil?
2) If the bits are not caught in the oil pump screen, where are they? Did they get removed when you do your many oil changes over the decades?
3) Even if you replace your timing chain and sprockets with new ones, the nylon bits are still in your motor, right? Now what?
4) How do you tell if this is a problem, low or no oil pressure, an overheating motor?
Hope someone benefits from this.....
