Original Nylon Timing Gear Cracked

[Gripper]

Tore apart yesterday found original nylon gear set cracked and split.
Anyone ever seen this before ?

Thanks Gripper

 

[toolmanmike]

It's 60 years old. You need a new timing set. I can see the loose chain from here.

 

[pnora]

Tore apart yesterday found original nylon gear set cracked and split.
Anyone ever seen this before ?

Thanks Gripper

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View attachment 1812404

Not uncommon. I doubt anyone replaces a timing set with the aluminum and plastic style.

 

[dodgeboy440]

Tore apart yesterday found original nylon gear set cracked and split.
Anyone ever seen this before ?

Thanks Gripper

View attachment 1812403

View attachment 1812404

Does that suprise you ????????

It’s amazing it lasted this long……

You are blessed it didn’t disintegrate & cause
Lots of internal damage!!!!

Those components were designed with one thing in mind . NVH . Negligible Vehicle Harmonics . ……….. quiet running engines ….

 

[Bird 426]

They were cheaper and quiet, usually they schuck the teeth. Put a good Rollmaster double roller on it. You are lucky that you caught at this stage.

 

[eldubb440]

It's 60 years old. You need a new timing set. I can see the loose chain from here.

the wife told me that exact thing on my birthday

 

[Photon440]

Having an original timing gear on a car that old is like having the original tires. They can't be trusted.

 

[MarPar]

the wife told me that exact thing on my birthday

 

[dadsbee]

Mine made it at least 40 years, engine rebuilt in '76 and I changed it 2016. But who knows if it was even replaced back then...

Usually you find all the tooth plastic in the pan...

 

[Gripper]

I have seen several destroy the teeth just never seen one with cracked gear.
Replacing with double roller.

Thanks Gripper

 

[DeltaV]

Usually you find all the tooth plastic in the pan...

But not in your pictured cases as your pans are shown on top.

 

[qkcuda]

Interesting pattern on mine when I replaced it.

 

[dodgeboy440]

Interesting pattern on mine when I replaced it.

View attachment 1812593

Man that’s FUGLY !

 

[Lefty71]

The factory assumed those would all be gone by the time the 70's ended lol.

 

[Runner 68]

Worst design they ever came up with. Replace it with a true roller.

 

[RemCharger]

It was a decent design, did exactly what the factory wanted it to do. Just not what us far future people want for performance.

 

[dadsbee]

Most guys are running headers! No need for the old "silent" timing chain and gear.

 

[Fury63]

A friend raced his Bronco off-road and always used the OEM timing set. I ask why and he explained that it was lighter than steel, and cheaper but, he did replace it yearly.

 

[toolmanmike]

A friend raced his Bronco off-road and always used the OEM timing set. I ask why and he explained that it was lighter than steel, and cheaper but, he did replace it yearly.

Save weight. You could save weight with a 7 1/4 rear end under your race car too.

 

[58belvedere]

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