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baldy Alfasud
Joined: 23 Jan 2006 Posts: 67
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Posted: Thu Nov 01, 2007 12:14 pm Post subject: gearbox question |
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Has anyone noticed on the gearbox external bell housing that there are various colours used by alfa ive seen green blue and white up to present, on differant gear boxes. im thinking it could be an indication of the ratios used does anybody know? as it would be a quick usefull guide.
Lee |
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Alan Alfasud
Joined: 15 Aug 2007 Posts: 48 Location: Slovenia - Ljubljana
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baldy Alfasud
Joined: 23 Jan 2006 Posts: 67
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Posted: Thu Nov 01, 2007 11:29 pm Post subject: |
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If your looking at the gearbox from the gear lever input shaft end ,its at the opposite side to the clutch lever opening at the top. Lee |
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Ben_nz Gold Cloverleaf
Joined: 30 Sep 2003 Posts: 575 Location: Auckland, New Zealand
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Posted: Fri Nov 02, 2007 9:43 am Post subject: |
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Here's another gearbox question.
At the rear end of the gearbox there's a long support arm attached, stretching toward the back of the car. The end of this arm has a hoop with a rubber bush, and a pin passes through this to mount the support arm to the car.
Should there be massive clearance around this mounting pin, or should the bush take up all the spare space in the support arm's hoop?
I just want to know whether mine is massively worn or whether it's designed that way. _________________ "Now, all that is left to do ... is wait that something else brokens, to fix up again!" |
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john 33_16v 16 Valve
Joined: 27 May 2005 Posts: 1406 Location: herts, uk
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Posted: Fri Nov 02, 2007 10:02 am Post subject: |
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Ben- Think they normally have quite alot of clearance.
Lee - If anyone knows the answer to colour thing it will probably be Ramesh Bharadia the boss of Alfarama 020 8951 4100. I know he himself is an alfa gearbox specialist, and i've heared that he used to do rebuilds on behalf of main dealers and alfa uk.
Would love to know the answer. Just bought a spare box myself!
John _________________ If it aint broke, fiddle with it until it is!
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93 33 16v Mirtle Met
08 Fiat Grande Punto Exotica Red
90 Yamaha FZR600 Genesis- Silky white/red/blue |
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Alan Alfasud
Joined: 15 Aug 2007 Posts: 48 Location: Slovenia - Ljubljana
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Eddie_W Alfasud
Joined: 08 Aug 2007 Posts: 74 Location: New Zealand
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Posted: Wed Nov 07, 2007 10:03 am Post subject: |
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Ben, when new those mounts have a hole you could drive a bus through. The engineering rational escapes me.
Regards Eddie _________________ The pop star formerly known as Eddie W |
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bobbber P4
Joined: 14 May 2003 Posts: 2162 Location: The Greatest Town on Earth - Swadlincote, UK
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Posted: Wed Nov 07, 2007 10:09 am Post subject: |
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Eddie_W wrote: |
Ben, when new those mounts have a hole you could drive a bus through. The engineering rational escapes me.
Regards Eddie |
Eddie, I agree. When I look at the design and then attempt to work out the purpose - I draw a blank.
Bob _________________ Fiat Bravo 165 Sport |
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Alan Alfasud
Joined: 15 Aug 2007 Posts: 48 Location: Slovenia - Ljubljana
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hugh jinjin Alfasud
Joined: 04 Sep 2004 Posts: 68 Location: Glasgow
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Posted: Thu Nov 08, 2007 12:38 pm Post subject: |
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the bush in the end of the gearbox extension isn't really to hold the gearbox rigidly in place but more to transfer crash loads to the chassis to stop the footwells crushing in the event of a head on crash. The Sud was originally designed with a lightweight alloy gearbox extension but after crash testing of prototypes this was abandoned and the heavy duty steel one seen on all production suds and 33 was adopted. |
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john 33_16v 16 Valve
Joined: 27 May 2005 Posts: 1406 Location: herts, uk
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Posted: Thu Nov 08, 2007 1:16 pm Post subject: |
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hugh jinjin wrote: |
The Sud was originally designed with a lightweight alloy gearbox extension but after crash testing of prototypes this was abandoned and the heavy duty steel one seen on all production suds and 33 was adopted. |
Hi,
I think my 1982 sud had an alloy extension- fairly sure.
My 1985 sprint had a steel one, along with 33 type axle, front brakes etc.
If anyone has the haynes sud manual to hand, there are pics of the underside.
John _________________ If it aint broke, fiddle with it until it is!
- - - - - - - - - - - - - -
93 33 16v Mirtle Met
08 Fiat Grande Punto Exotica Red
90 Yamaha FZR600 Genesis- Silky white/red/blue |
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rsfruitbat Alfa Sprint
Joined: 13 Jun 2007 Posts: 241 Location: Kidderminster
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Posted: Thu Nov 08, 2007 2:37 pm Post subject: |
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I think early Suds had the p***k in a shirt sleeve back mounting but the tailshaft was bolted straight onto the rear gearbox casing with no rubbery bit inbetween.
Changing to this I have found does improve the gear change quality. I also think the Sprint gearlever might be a bit shorter which reduces throw.
rsfruitbat |
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Admin Site Admin
Joined: 19 Feb 2003 Posts: 1223 Location: Stafford, UK
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Posted: Sat Nov 10, 2007 2:40 pm Post subject: |
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john 33_16v wrote: |
I think my 1982 sud had an alloy extension- fairly sure. |
As far as I know they didn't even make it into production, let alone through 10 years of production. The manuals show the allow extension (as does the Haynes which uses reproductions of the Alfa drawing in places I think), but they were produced before the car was 100% finished in development. The alloy extensions was too rigid for impact absorbtion from memory.
All the best
Keith _________________ I owe, I owe, its off to work we go.
Bimota Forum
Stafford Christmas Lights
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ZeNiTh-PbArM Alfa 33
Joined: 14 Mar 2003 Posts: 388 Location: Paris, France
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Posted: Mon Nov 12, 2007 7:23 pm Post subject: |
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Hi,
as far as i know the alloy extension was only fitted to italian cars.
export suds all featured the steel one
regards,
zp |
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RBL Alfa Sprint
Joined: 30 Mar 2003 Posts: 162 Location: Leicestershire
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Posted: Fri Aug 01, 2008 4:33 pm Post subject: |
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Lee
Did you ever work out exavtly what the blue mark indicates? I've also got a 5 speed 'box with the same marking.
Rich _________________ Porsche 550 spyder replica with Alfa Sprint 1.7 engine |
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