Quote:
Originally Posted by RedCoupe
If I increased the “texture” of my Nikasil cylinders, I would want to check them for surface roughness with a profile meter. Nikasil is so hard that if you get it wrong and have the cylinders too rough, the rings wear out very quickly and the cylinders stay rough. Not like typical cast iron where the cylinders start rough and smooth out as the new rings seat.
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That is my thinking too, Nicasil is to hard to "wear in". On my 3.6 rebuild I cleaned the "glase" off with Scotch Brite and WD40, that gave me a duller finish. Seemed to be the safer way for someone lacking a RA gauge.
I think there was a lengthy thread about Nicasil and RA here somewhere....
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Magnus
911 Silver Targa -77, 3.2 -84 with custom ITBs and EFI.
911T Coupe -69, 3.6, G50, "RSR", track day.
924 -79 Rat Rod EFI/Turbo 375whp@1.85bar.
931 -79 under total restoration.
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