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When I got the head it had very fresh looking valves. I'm not sure where it came from, but it had sucked a nut into one of the cylinders, which had trashed the motor. And it was subsequently parted. There was a light nick or two on the intake valve in that cylinder, and 5 - 10 very light nicks in the combustion chamber. All which were very superficial and taken out easily with a dremel. But it looked nastier in a little computer picture, which is why I got the head so cheaply on eBay.
Biggest issue with the head was that it had been shaved *WAY* down, way down beyond the realm of what would be usable in a street car. I think the chambers CC'd out to 32.5 when I first checked them. Ridiculously high CR on top of even a 2.0L bottom end. I reshaped the chambers slightly (unshrouding the bigger valves, widening the sides of the chamber to match the bigger bore) and got them up to 37.5 cc's. Then built the motor using dished B21FT pistons to regain another 12cc's of space. Now it runs very well on 93 octane pump gas.
But the R-Sport head came later, I still had a stock F head on it with the SU's. Then the DCOE's went on with the 32mm chokes, big improvement. ried the 36mm chokes and it didn't work well, so I put the 32's back in. Then came the rebuilt bottom end and the R-sport head, at which point the 36mm chokes worked just fine.
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'63 PV544 rat rod, '93 Classic #1141 245 +t
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