Phenolic teeth on timing gears
Senior User
Joined: Apr 2001
Posts: 321
Likes: 1
Phenolic teeth on timing gears
Hi,
This week I removed the timing gears on my 79 351M. I was suprised to see that the large gear body was metal, but the teeth were a funny phenolic or nylon material.
Anyone seen this before? Why would ford do that? Did it save them money?
BTW, my chain had 0.8" of slack, will the motor run any different/better/worse with the new chain set? Any other adjustments I should make (like timing the dist.?) with the new chain set?
Just curious,
-Brents
This week I removed the timing gears on my 79 351M. I was suprised to see that the large gear body was metal, but the teeth were a funny phenolic or nylon material.
Anyone seen this before? Why would ford do that? Did it save them money?
BTW, my chain had 0.8" of slack, will the motor run any different/better/worse with the new chain set? Any other adjustments I should make (like timing the dist.?) with the new chain set?
Just curious,
-Brents
Elder User
Joined: Mar 2001
Posts: 898
Likes: 0
From: SF Bay area
Phenolic teeth on timing gears
Brent, you will also need to check/adjust the ign. timing to complete the job. Timing will most likely change.
Wayne 60 F-350
e-mail
https://www.ford-trucks.com/users/whomrig
Wayne 60 F-350
https://www.ford-trucks.com/users/whomrig
Junior User
Joined: Jan 2000
Posts: 92
Likes: 0
Phenolic teeth on timing gears
Just a suggestion, but, you may want to bite the bullet and get an aftermarket roller timing set that will allow you to advance the cam ( 3 keyways on the crank sprocket ). These seem to run around $40.00. A friend of mine with a 351c Mustang says that the pre '73 timing sets are not retarded, so one of these may have the same effect.
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