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23rd April 2017, 11:37
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Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,386
Thanks: 1,587
Thanked 3,749 Times in 3,181 Posts
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Expansion tank cap 'O' rings
I've been looking at mine today with a view to renewal and have made a surprising discovery. I don't remember this being mentioned on the forum.
The two 'O' ring retaining channels on my original cap (rated '100') are different sizes. Measured with a vernier caliper, the top one is 24.1 mm diameter and the lower is larger at 25.1 mm. So I checked (as best I could) the OD of the two original 'O' rings and, sure enough, there was a difference of 1 mm in the diameters of these too. So it appears that two new 'O' rings of differing sizes are required. I wonder whether the aftermarket suppliers of these for the 75/ZT have spotted this? Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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