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Rouge Cylinder?
I have a set of P&C’s, 5 of them have the stamping on the jug as in the photo. (sorry the camera won’t focus at that distance). One has a fainter stamping of B with either 0 over 3 or 0 over 5 on the left. There are no numbers on the other side, but I’ll check with a magnifying glass to make sure.
The 5 cylinders have casting marks of W 15 after an identical string of numbers before it. And the one odd ball stamped cylinder has W 16 cast on it. One of my machinists said to check the deck height number group on the base of the cyls. Which one is it and how so I decipher them to make sure I don’t have a bastard cyl. The set was bought off of e-bay. The box had been unsealed. The seller said they were new and they look new. But they don’t match up. What gives? Would Mahle mix up castings in a set along with a different stampings?   
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10-15-2003, 07:37 AM
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Wanted to add- the Cylinder is not rouge- IT'S ROGUE! Blast it.
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78SC coupe, Silver Metallic |
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10-15-2003, 07:57 AM
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Not sure what year you have, but see my post below with regards to a 70/71 2.2. The little spec book says the height group is the number inside a triangle. I don't think the casting mark is anything to worry about as machining happens afterward.
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Robert Williams 70' 911T |
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10-15-2003, 07:59 AM
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I got a magnifying glass out and looked at the stampings. The stampings don't jive with the few people I've talked to as the keep referring to a triangle for the height group. There are no triangles on my set. There are only these letter number combinations. I haven't the foggiest of what they mean.
But the good thing is that the different cast cylinder does have the same number letter combination as the other five. There is the B in the center surrounded by 0 over 5 on the left and I made out a 1 on the right on the bottom. It was very faint but it was of the same font as the other five. I could not make out the 0 that should have been above it on the right. It looks like the stamp wasn't square to the cyl. |
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10-15-2003, 05:58 PM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 16,494
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You need to look on another section of the cylinder to find the stamping with the triangle. It is real easy to miss. Here is a picture of one of mine:
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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10-20-2003, 10:35 AM
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Thanks for the photo clarification. These match pretty much exactly to the ones I took off the car.
I have contacted Mahle USA and they have forwarded the questions to Germany. I'll share the answers. |
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10-20-2003, 02:38 PM
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Silver 911SC
1970 Porsche 911T
