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Author Topic: Gearbox interchangeability  (Read 1110 times)
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Angle Grinder
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« on: 13 January, 2015, 10:36:50 AM »

I've got a noise coming from the gearbox which I assume to be worn layshaft bearings. As a possible replacement / parts donor, I bought a gearbox from a chap who is relatively local to me.

My initial intention was to re-build the original gearbox using the spare box as a source of parts, but I am now thinking that I might as well stick the spare box on just to see if it is a good one. This would obviously save a lot of time and money if the God's of good mechanical fortune were to smile upon me.

However, I am now having doubts about the interchangeability of the gearboxes. For starters, the original gearbox has P/N 815 331 (Serial no. 937) and the spare box has P/N 815 533 (Serial no. 208).  

But there is another difference, on my original gearbox the dipstick sits in the box right up to the "hilt" of the plastic dipstick. However, the same dipstick inserted into the spare box will not fully insert and there is a gap of ~1cm between the hilt of the dipstick and the surface of the gearbox.

My Flavia is a 1967 1.8 (Carb) coupe. Can anyone offer any information about which gearbox Part Numbers should be compatible?

P.S. I am guessing that the 815 533 box has come from a Flavia Zagato so the 4th gear will be a bit higher.
« Last Edit: 13 January, 2015, 11:12:34 AM by Angle Grinder » Logged

Current Cars: 1994 2.0 VIS Thema Station Wagon, 1967 Flavia 1.8 PF Coupe.

Previous cars:
1983 Prisma 1600
1991 Thema 16v i.e. SE
1988 Thema 8v Turbo
1992 Thema 16v i.e.
1983 Gamma Coupe (manual)
1993 Thema VIS
1994 Thema VIS LE
1990 Thema 2.8
brian
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« Reply #1 on: 15 January, 2015, 01:02:16 PM »

I will check my spare coupe box with the spare Zagato and see. Although on reflection as I was about to hit the send button it may be a 1500 one! I have Parts Books and will look there.
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Brian Hands


1922 Hands Tourer
1934 Augusta standard saloon
1938 Aprilia S1 saloon
1953 Aurelia B10
1965 Flavia Sport
Angle Grinder
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« Reply #2 on: 15 January, 2015, 06:14:21 PM »

Thanks Brian, that would be appreciated.

The difference with the dipstick is a bit strange, but the dipstick that came with the box (not necessarily the correct dipstick either) doesn't fully insert to the hilt either. Maybe the different gear sizes for the 4th gear meant adjusting the dipsticks "funnel" so that it cleared the larger diameter cogs. Who knows?

Be good if I could source a replacement box that was known to be trouble free as a gearbox swap is a lot more appealing than trying to do a rebuild.
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Current Cars: 1994 2.0 VIS Thema Station Wagon, 1967 Flavia 1.8 PF Coupe.

Previous cars:
1983 Prisma 1600
1991 Thema 16v i.e. SE
1988 Thema 8v Turbo
1992 Thema 16v i.e.
1983 Gamma Coupe (manual)
1993 Thema VIS
1994 Thema VIS LE
1990 Thema 2.8
brian
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Posts: 220


« Reply #3 on: 27 February, 2015, 03:44:28 PM »

Very sorry to be so slow in responding but life had overtaken Lancias.
I checked my spare 815-533 box and my 815-130 box (ie 1500 cpe) have different dipstick/breather. The older one is a nicely made metal one and the later one is all plastic but they both fit the other box and the marks are the same depth. The parts book gives the same picture and number and origin (815.00) for both cars.
Hope this is helpful.
Brian.
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Brian Hands


1922 Hands Tourer
1934 Augusta standard saloon
1938 Aprilia S1 saloon
1953 Aurelia B10
1965 Flavia Sport
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