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PCA Member since 1988
Join Date: Feb 2018
Location: SW Washington State
Posts: 4,627
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IMO, chains and sprockets don't wear quickly. In other engines on which I've worked, chain replacement is common, but on these engines, with the double row chains, I have not observed significant wear of the chains or sprockets at 100K+ miles. That's of several dozen disassembled SC and Carrera engines I've looked at. I have not been able to find a specification for chain length. That's something I would like to know. I have measured the length of 20 links on several chains with 65Kmi, 115Kmi, and one of unknown mileage. They were about the same length, within my ability to measure. I have not measured a new chain.
When you order the new chain, please measure the length between 20 links and compare to your old chain.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners.
Cars are for driving. If you want art, get something you can hang on the wall!
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