Manual gearbox noise - synchro issue?

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nbracken

Well-known member
Joined
Aug 13, 2014
Messages
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Location
Cologne, Germany
My Car
1972 Mach 1 Cobra Jet
I have a 72 351 Q with manual four speed.

I've noticed a very short duration (1 secondish) kind of grinding noise intermittently from my gearbox that happens when the car is in reverse. I've not noticed it (yet) in any forward gears. It happens when the car is moving so the clutch engaged

Any ideas what this might be? I wondered whether it could be a sign of worn synchro (if there is synchro on reverse...?).

I don;t have any issues when using the forward gears.

I have not checked the gearbox fluid level yet but must....

Thanks in advance for any comments/ideas

 
Not a synchro. May be a lubrication or wear issue with the reverse idler gear. I would check the gear oil level, but if you don't have any obvious signs of leaking it should be OK.

 
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