Name this crankshaft

[Speedwrench79]

Got this in a parts acquisition. I am not familiar with the name on the box it was in. Can anyone tell me about this company, quality, and history? It has 3.0L main journals with 50.8mm (2 inch) rod journals. Appears to be new, has cosmoline on it, some writing on the box reads " paid 2014" Thanks Pelican!

[Trackrash]

9 or 6 bolt flywheel? Interesting there are no counterweights. With those hollow rod journals, how is oil supplied to the rod bearings?

[Speedwrench79]

Hey Gorden, it's a 9 bolt flywheel. The rods are supplied with oil from the mains just like the factory cranks, a drilled passage from the main bearing journal to the rod journal at the leading portion of the rod journal before the hollow

Steve

[roblav]

The stroke looks awful short! 66mm? Non-counterweighted...

[MST0118]

Never heard of Chambon before but looks like Capricorn bought them. Would be interested in how much the crank weighs. It reminds me of the 66mm supercrank that Henry had Marine Crank make.

[dannobee]

The rods are supplied oil by the full groove in each main bearing journal, not by the factory way of holes drilled in the crank and oiled from the #1 and #8 main bearings. Totally different oiling pattern on that crank.

Other than that, no idea on it. Have you measured the stroke?

[Neil Harvey]

Chambon was/is a French Crankshaft company that as suggested was bought out some years ago. They made many cranks for and had a strong pedigree in F1 with Renault particularly and many others. They were among the leaders back then.

The lady that ran the company was one of the nicest people you could ever meet. Her name has just left me, it has been many years since we talked. Some else may remember her name.

[dannobee]

They also supplied cranks for nascar teams. We'd get hand me downs once in awhile. The machining on them was always spot on. As in perfect.
The 2.000" rod journals are a standard small block chevy "small journal" bearing size. You'll need custom rods for it.
Lots of consolidation and merging went on in the industry. We used to use "Vandervell" bearings with these cranks. Looks like Mahle bought out Vandervell and no longer produces many sizes.
Like I said, the oiling on it is different than a regular Porsche, FWIW. And measure the stroke to see if it even fits your needs.

[Speedwrench79]

Thank you all for your valuable input. MST0118 may have nailed it. I also got with this group of parts another crank, a stock 3.0L with knife edge counter weights and threaded for oil galley plugs. The box it was in said Pauter written with a sharpie, but the imprinted logo on the box which was roughly crossed out with a sharpie said "Marine Crankshaft". after checking out their website it most certainly looks like their work. It is a late(bolt in pilot bearing) 3.0L crank, 70.4mm stroke weighing 24.8 lbs. compared to the stock late factory crank at 30.4 lbs. bare. I will give Marine Crankshaft a call and see what more they can tell me. Again, I thank you all for sharing your knowledge. Next, how to work that oiling system? and with no counter weights, what does this do at high revs?

[Speedwrench79]

Dannobee nailed it too. No oil holes in the crankshaft #1 and # 8 main bearing journal

[dannobee]

From an engine builder's point of view, you don't need to change anything in the oiling system. It's just a different way to oil the rods. We can argue the merits of fully grooved journals, but it's one way to guarantee oil all the time.