Transmission Problem

[Peter Aziz]

My 67S, has developed a problem and not sure what it is. Last week, she locked up in reverse, and I was able to dislodge through some rocking. When I started up again, I was able to drive off OK, but a soft clonk, clonk noise, is now eminating from the trans. It is most noticable in neutral when coasting.(no motor noise. ) She shifts fine, and that includes reverse. I first thought it might be a CV joint, and took them off and checked, and they seemed OK. I got under the car and had my wife spin the rear wheels and I can hear the noise emanating, from the front part of the tranny.Can I still drive the car with no problems and Is this a major tran problem? Any advice appreciated; Thanks; Peter Aziz

[roblav]

I would have this one looked at - recommend removing the front cover to the transaxle to inspect for play / wear. You never know - it might be a simple fix - like maybe the big nut on the end of the pinion (layshaft?) shaft came loose. Then again, it may be the selector fork (reverse) wearing out or needing adjusting.

[Peter Aziz]

Thanks for the reply Rob; ; The only other reply I received was from Pelican parts technical desk, and they advised me as well to stop driving, pull, and take apart the tranny and and have a look inside; Looks like thats the only alternative;

[roblav]

You're welcome Peter.
Yes, I believe you should take it apart before some very major damage occurs or you get stuck on the road somewhere. I've never had a Porsche 901/911/915 box completely apart, but I have had Hewland racing boxes apart many times, and they are very similar. Check the reverse selector fork adjustment after making sure the pinion shaft nut is tight.