Are 1.6/1.7 Boxer gearboxes interchangeable? - Alfa Romeo Forum
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Are 1.6/1.7 Boxer gearboxes interchangeable?

Can anyone tell me whether a gearbox from a 1.6 8V boxer engined 146 will fit a 1.7 16V 145?

I assume it would as it's the same engine block. Just want to check before I go taking two cars apart! I've changed a gearbox / clutch on a boxer before and it isn't a 5min job on your own so want to be 100% before I go ahead with it!

I assume the 1.7 uses a different clutch as it has a higher powered engine?

Cheers, Paul
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Re: Are 1.6/1.7 Boxer gearboxes interchangeable?

Going from when I changed my 33's gb the dimensions of different gbs are the same (not Sud with in-board brakes). Howevever check the ratios. The new clutch I put in, a Valeo, was listed for a number of cars so you might not need a different one, although there is difference of dia. shown for some. I only changed mine because the gb was coming off anyway, but the old one (with 70 000 miles on it since I changed it before) had no wear but the diaphgram 'fingers' were showing signs. Have a look at the following for clutch kits:-
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boxer , gearboxes , interchangeable

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