Porsche Factory 2.2 Nitrated Steel Racing Rods Matched

[72targa]

Tough set to find...not mine...

http://cgi.ebay.com/ebaymotors/Porsc...item23129c036a

[Frank Beck]

I knew this process was used in growing plants but never realized that it was applied to engine parts also. Early green movement.
Editing my former post regarding nitriding as I didn't check the auction. This seller doesn't make mistakes.

[72targa]

Nitrated is correct...

http://books.google.com/books?id=QJV...20rods&f=false

http://www.pbase.com/slidevalve911rs...tched_nitrated

At least in the old literature I've seen...

[Cliff]

Nitriding is a heat treating process that diffuses nitrogen into the surface of a metal to create a case hardened surface. It is predominantly used on steel, but also titanium, aluminum and molybdenum.

Typical applications include gears, crankshafts, camshafts, cam followers, valve parts, extruder screws, die-casting tools, forging dies, extrusion dies, injectors and plastic-mold |ˈnītrīd|
noun Chemistry
a binary compound of nitrogen with a more electropositive element.
verb [ trans. ] [usu. as n. ] ( nitriding) Metallurgy
heat steel in the presence of ammonia or other nitrogenous material so as to increase hardness and corrosion resistance.
ORIGIN mid 19th cent.: from nitr- (from niter ) + -ide . (wikipedia..................),,,,,,,,,,,Cliff

[72targa]

Now, if we could just get all of the old literature updated...

[Frank Beck]

Goes to show how words and meanings change... unless of course it was a variation of the current process of nitriding.

[MountainRoads]

Guidance question please, because I'm asking from an amateur's perspective: I'm mildly interested in starting to collect some parts for a future engine build. The fact that there are zero bids might possibly be a clue and this is E-Bay, so things sometimes happen very quickly. Plus, optimisitc sellers are the norm

Anyone care to offer an opinion on what a reasonable price for these would be, if they are as advertised? Yes, I know that ultimately they are worth whatever someone is willing to pay, reasonable or not.

- MR

[72targa]

If you bought a set of Carrillo rods, you'd be looking at $2000+

http://www.ebsracing.com/content.wws...ting-rods.html

These are factory NOS...but they're hidden inside an engine...depends upon the goal for your engine...originality vs. modern components.

[MountainRoads]

If you bought a set of Carrillo rods, you'd be looking at $2000+

http://www.ebsracing.com/content.wws...ting-rods.html

These are factory NOS...but they're hidden inside an engine...depends upon the goal for your engine...originality vs. modern components.

K, thx. I'm mostly interested in reliability combined with a moderate performance gain, while retaining an original or period-correct external appearance. What's the diff between "S" rods and "racing" rods? I'm guessing the additional treatment makes them either stronger or they are made lighter while retaining the same strength? Also, perhaps more closely balanced?

- MR

[72targa]

In my experience, it's more an issue of availability. These are old engines and they're aren't that many sources for parts for them. So it's not so much "original" vs. "race" as it is "what can I get that is original" vs. "what can I get aftermarket that will perform well in my vehicle". Then it's just a cost choice. My .02...other comments welcome!