Stepnose 105 gearbox woes
Discussion
A well known specialist used another well known gearbox specialist to rebuild the gearbox on my GT Junior last year.
However, although several new bearings were used and better spec synchros, the box still whines excessively and even when warm, the shift quality is not great. It doesn't baulk or graunch, but doesn't go into gear particularly well.
I'd be grateful for recommendations for someone to take a look at the gearbox (i.e. take it apart). The gearbox issues make me think twice about taking the car out as it's not particularly enjoyable to drive.
Recommendations for rolling road tuning would also be welcome.
What mods (if any) can easily be done to the little 1300 to make it more peppy? I already have a 123 dizzy (not mapped on a rolling road), along with a lightweight flywheel...
However, although several new bearings were used and better spec synchros, the box still whines excessively and even when warm, the shift quality is not great. It doesn't baulk or graunch, but doesn't go into gear particularly well.
I'd be grateful for recommendations for someone to take a look at the gearbox (i.e. take it apart). The gearbox issues make me think twice about taking the car out as it's not particularly enjoyable to drive.
Recommendations for rolling road tuning would also be welcome.
What mods (if any) can easily be done to the little 1300 to make it more peppy? I already have a 123 dizzy (not mapped on a rolling road), along with a lightweight flywheel...
Alfa101 said:
I'm told that using Redline 75/90 NS oil in the alfa boxes improves them. I'm about to try that with one of mine. It might be worth a try before you take the box out. Cloverleaf transmissions in Cumbria have a strong reputation.
Thanks. CL trans did the original work....RicksAlfas said:
fergus said:
It doesn't baulk or graunch, but doesn't go into gear particularly well.
Could it be something like the clutch, or simply a badly fitted rubber gaiter on the lever?I'd give Charlie a ring and chat it through before you start taking it all apart.
Just a thought - did you have the flywheel lightened before the gearbox rebuild, or as part of it?
If it's been skimmed rather than notched, it might be too thin for the clutch to work properly?
Double de-clutching has it straight into gear, making me think that the oil may be too slippery for the synchros to grip properly. I'll try redline 75w90 NS and see if that helps. Will also call Charlie. Thanks
ToothbrushMan said:
did the 75/90 oil help?
Not got round to changing it yet. Having some bathrooms done, so the Alfa has slipped down the priority list a bit!Need to take it somewhere to get the 123 dizzy and webers setup though, as my first car, a Vauxhall Astra 1300S felt quicker....
Will get the redline NS oil and see how it goes. How easy is the box to fill on the 105?
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