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Old 12-25-2014, 04:45 AM   #1
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Default 1.8 vs 1.6 propshaft

Hi,

I want to add a 1.8 diff to my car at some point but its a kit car and I will need to shorten the prop-shaft to fit if I use my existing 1.6 prop or a replacement 1.8 prop so my question was, is the 1.8 prop-shaft the same as the 1.6 prop-shaft in all but length? If it is I may as well shorten the one I already have rather than buy another one and have to shorten it anyway.

Cheers
Stot

Last edited by Stot; 12-25-2014 at 06:10 AM.
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Old 12-25-2014, 09:42 AM   #2
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The bolt circle is different, so you will need to use the 1.8 shaft with a 1.8 diff regardless.
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Old 12-25-2014, 03:54 PM   #3
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Great thanks. Ill trawl ebay then.

Cheers
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Old 12-29-2014, 07:54 PM   #4
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Bolt circle and lenght are different because the input shaft on the diff as well as the flange are different 1.6 to 1.8.
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Old 12-29-2014, 08:29 PM   #5
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When I bought a 1.8 diff swap from hustler way back in the day the driveshaft he gave me was from an automatic car and didnt fit into the 5-speed tranny. Fortunately he had another one that worked and brought it to my house and touched me.

So heads up about the auto vs 5-speed difference, but I wouldn't think it would be a problem in the UK (autos dont exist there). I used to have a picture of it somewhere...
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Old 12-30-2014, 01:19 AM   #6
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Quote:
Originally Posted by Bond View Post
When I bought a 1.8 diff swap from hustler way back in the day the driveshaft he gave me was from an automatic car and didnt fit into the 5-speed tranny. Fortunately he had another one that worked and brought it to my house and touched me.

So heads up about the auto vs 5-speed difference, but I wouldn't think it would be a problem in the UK (autos dont exist there). I used to have a picture of it somewhere...
Must of changed the auto tranny in the NB. NA autos used the same drive shaft as manuals. Also looks like the Mazdaspeed Turbo got a different shaft with replaceable U-joint guts.
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Old 12-31-2014, 08:16 PM   #7
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Quote:
Originally Posted by Bond View Post
Fortunately he had another one that worked and brought it to my house and touched me.
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