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Join Date: Sep 2000
Location: Frankfort IL USA
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Current pricing for bore and replate cylinders is $240 each for end user pricing. So figure about double the estimate of $600 for the set of six

https://www.millennium-tech.net/serviceInfo.php?id=7
https://www.usnicom.com/plating/pricing

CP pistons are on par with JE pistons and those are around $1200 for a set for an off the shelf set. You're right that twin plug comes into play and that starts us down another road of which twin plug solution to use- 964/993 dual distributor, JB Racing or Burnham 12 pin distributor with two MSD units, Electromotive ("dumb" coil boards or COP),........ All of this requires the chip mapping to accompany it or a replacement of the Motronic ECU. Original 3.2 exhaust can support it (best to install a cat bypass pipe and a free flowing muffler) but most like to go with equal length headers. If this displacement increase is done while already into an engine for a rebuild, the cost escalation climbs rapidly!

When all said and done with the NA build, we've put a lot of $ into it for not much return. The power increase is certainly noticeable but it's not earth shattering. It's not like installing a 3.6 from a 964 or 993. I think if I had a G50 car, I would lean toward the turbo install. It makes a LOT more torque, more than a 3.6, and I think most people would like the benefit of that.
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Kevin L
Present: '86 Carrera, '79 911SC widebody conversion rolling racecar shell
Past: '87 Carrera
Old 04-09-2019, 09:03 AM
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