During testing of pistons for the BSL we had endless trouble getting small batches made, with the small shape changes needed.
When we finally got it right we wore our last couple of sets out , after doing some 300+ laps when testing at Sepang.
They actually rattled on the overun into corners.
HPC coatings in Auckland applied a Moly based baked on coating, that they said would get us back running till replacements arrived.
The coating was thick enough that when first put together there was ZERO bore clearance.
I was super nervous about Steve Briggs being thrown down the road at Puke when running it in, but after a few laps he gave it death with no issues at all.
It did around 30 laps that day, and after pulling it down there was no sign of scuffing or the coating wearing away.
I put one piston into the single cylinder dyno engine that night, and it made just over 1.5Hp more in 56 repeatably.
Cheap method to retrieve worn pistons, and for sure the coating lasted well.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
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