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bradmax57
Newbie


Joined: 20 Mar 2017
Posts: 36
Location: Newcastle upon Tyne


PostPosted: Fri Apr 07, 2017 9:38 pm    Post subject: Gearbox issue? Reply with quote

Ok so a few weeks into 911 ownership I think I'm noticing a couple of potential faults with the car main one being the gearbox, car is a 997.2 Carrera later 09, has just gone 60k today, it had a clutch & flywheel fitted by 9excellence at around 50k 16months ago. I seem to have a little bit of crunching changing from 1st to 2nd, it doesn't happen all the time and it might just be me not hitting the clutch fully but they other changes are fine, all the same I'm a little concerned, I've only got 3 months warranty on the car so going to have to get this checked out for piece of mind only, just wondering if anyone else here with a 997 gen1 or 2 has suffered the same
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cheshire911
Paul Ricard


Joined: 10 Jun 2012
Posts: 3400



PostPosted: Sat Apr 08, 2017 4:38 am    Post subject: Reply with quote

Both 996 & 997 manual cars including Turbo and GT3 can suffer synchromesh problems on 2nd gear. After ruling out clutch adjustment issues, if it still persists, you will be looking at a gearbox strip and rebuild with minimum replacement of 2nd gear synchro, sleeve collar and cog plus possibly other parts that require replacement due to wear and tear.

Try to sort it out sooner rather than later under warranty. Be aware though it may not be covered under warranty wear and tear exclusion clauses.
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996 2002 X50 Turbo Manual
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cheshire911
Paul Ricard


Joined: 10 Jun 2012
Posts: 3400



PostPosted: Mon Apr 17, 2017 8:33 am    Post subject: Reply with quote

Have you managed to have the issue seen? Findings?
If you haven't spoken to Mike at Sports & Classic, I'd recommend it. He has a lot of expertise on these gearbox issues. You can also checkout his web site as it provides some guidance on typical issues he resolves.
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Scholester
Hockenheim


Joined: 16 Jan 2012
Posts: 653
Location: South West


PostPosted: Mon Apr 17, 2017 1:17 pm    Post subject: Reply with quote

Would engine mounts being banjaxed manifest itself in more ways than just 2nd gear changes?
Just a thought.
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997.1 Turbo Coupe, manual, black/black. 29k miles under its belt.
 
  
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timbo1811
Trainee


Joined: 13 Dec 2016
Posts: 52
Location: Dorset


PostPosted: Mon Apr 17, 2017 1:30 pm    Post subject: Reply with quote

Might be worth changing the gearbox oil to make sure correct grade is in there. I've had a few cars with this issue, which usually improves with temperature. The synchro cones get worn and have difficulty spinning up the gears when the oil is more viscous. One work around used to be to use a slightly thinner oil with higher specification so as not to increase wear. not sure if any one has tried this on here but it worked on a 944 I had.
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Lotus Elan, Lotus Elan +2, MGA Mk11, TR4, 230 Compressor, 320 coupe, 944, Boxster 2.7, 997.1(current), VFR 1200, CBR 1100 Blackbird
 
  
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infrasilver
Fast & Furious
Fast & Furious


Joined: 04 Oct 2010
Posts: 7074
Location: East Midlands

2001 Porsche 996 Targa

PostPosted: Mon Apr 17, 2017 2:12 pm    Post subject: Reply with quote

I had the 1st to 2nd crunching issue a few years ago, I changed the oil but it didn't cure it, I had a gearbox rebuild a few weeks later and that did cure it.
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cheshire911
Paul Ricard


Joined: 10 Jun 2012
Posts: 3400



PostPosted: Mon Apr 17, 2017 4:30 pm    Post subject: Reply with quote

Spot-on Chris. This issue could be due to things mentioned here, but according to Mike my local Indy, it usually points to a gearbox strip and rebuild.
Quite common judging by the number of gearboxes he has in his workshop for the same fault across 996, 997 and GT3 cars of the same model range.
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bradmax57
Newbie


Joined: 20 Mar 2017
Posts: 36
Location: Newcastle upon Tyne


PostPosted: Wed Apr 19, 2017 3:22 pm    Post subject: Reply with quote

Took it to a specialist near me and he had a drive of it, he said it seems fine and probably down to me not being used to it, have to say in the last few days of driving it I haven't noticed it at all, fingers crossed its fine
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