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4-speed transmission--popping out of 4th gear

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NormBrewer

Freshman Member
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I have a Jensen Healey which has the almost-same 4-speed transmission as the Sunbeam Alpine. It's popping out of 4th gear when I accelerate. Does anyone have a similar experience, and know how to correct the problem? Please advise. Thanks.
 
Worn shifter fork and/or sliding hub groove for the fork would be my guess. New parts are pretty much unavailable for that sort of thing so about all you can do is have the fork faces built up and recut to match the sliding hub.
 
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