Std 1600/1750/2000 105 Gearboxes interchangeable?

[fgc]

Hi,

I have a question about the inside of the Std 1600/1750/2000. Do they have the same ratios and are the internals interchangeable between themselves?

I ask because I own a 1750 and I want to buy spare gearboxes to canabalise gears and any other good bits to build a fresh box. 1750 is very rare where I am. there are plenty of 1600 and 2000 around. So I have access to a few cheap 105 boxes but the mechanic tells me that the ratios are different on the inside??

I hope to canabalise enough parts (primarily gears/synchros sleeves and dog teeth gears/bearings/etc) to make a good box plus with enough gears to experiment with lightening them so that even if I killed a couple of them I will still have 1 good std box (thats the hope anyway!!)

Greatly appreciate any input on this. Thanks!

Thanks!
fgc
1750 spider

[Alfar7]

The ratios of all are the same. The gear tooth count on earlt 101 5 speeds are different from late models and the 101, 105 series uses smaller syncro dog housing parts than the 115 cars so that will be different.
Some of the bearings can interchange, the rear bearings will not. The later have larger roller bearings than earlier models.

Parts boxes are needed for every era as no dog housings are available new for any of them.
The 115 and Alfetta/Milano share the same syncro parts (not gears)

[fgc]

Thanks Alfa7 for your reply.

OK I will go look for the 105s primarily as donors rather than the rest.

Having said that... you indicated that the later 115 uses bigger synchro etc... is it a case of bigger = beefier = more lasting? If so can it be swapped over the the 105s?

Thanks again for your kind reply.

I am going hunting this weekend!

fgc

[Alfar7]

No,
Larger where they press into the gears

[fgc]

Quote:

Originally Posted by Alfar7 No, Larger where they press into the gears