mystery crankshaft -- need help to identify

Matthew

I pulled this crankshaft out of a motor I picked up at the local scrap yard. The yard only wants the non-ferrous metals so I got the cranshaft and flywheel and a few other hard parts for free. The crank is a 69mm that threw a rod due to a rod nut backing off (they weren't staked). The engine had 92mm pistons and cylinders. It also featured a cast iron oil pump (won't be using that) and an unmarked cam with aluminum bolt on gear.

There are some markings on the crankshaft near the center main journal. One one side it is stamped INPAVI and on the opposite site (180 degrees) LEPE . On the top of the crank looking straight on from the pulley end it is stamped 69. I assume it's 69mm and it is also stamped 9 99 which I assume is a date code for sept of 1999. What I want to know is who sold this crank and more importantly if it is a cheap cast unit or a forged crank. It is definately not a welded stocker as you can see it is a one piece unit. I checked with rimco and I can have this crank reground for $40 plus shipping. I'm trying to figure if it's worthwhile. If the mains measure out good, I would only have the rod journals ground. I am thinking of using this crank for a mild 1776 project. Any help identifying this crank is greatly appreciated

Image may have been reduced in size. Click image to view fullscreen.

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turboblue · Posted: Tue Jan 18, 2005 6:54 pm Post subject:

Well as best I can tell with that blurry picture, it is cast crank.
Look and see if there is a thin parting line somewhere on it that would look like two halves of a mold had separated. That flywheel looks cast too. Most lightened forged 'wheels have a nice fat radius rather than a sharper 90* at the area near the ring gear.
_________________
Gary

Turbo VW Sand Drag Buggy

"If you don't run into the Devil every once in awhile, you must be going in the same direction!"

Type 5 Joe · Posted: Tue Jan 18, 2005 7:14 pm Post subject:

Cast Crankshaft for shure... Improperly lightened German Flywheel.

Build a Torquey Single Port with it Wink

- Joe

Matthew · Posted: Tue Jan 18, 2005 8:11 pm Post subject: mystery crankshaft

Thanks guys for the quick replies. Here's a picture that's a little more clear. The single port motor is a great idea! I was thinking of using it for that if it was a cheap crank. It has to be better than using a non counterweighted stock crank on a stock engine. So for my 1776 what crank do you recommend? It will be running carbs at first (kadrons) and I would like to set it up with a blow through turbo system down the road. Heads will be some 041s I have with 40x35.5 valves with mild port job and low compression for turbo use like 7:1. I'd like to use a turbo grind camshaft possibly Engle or CB performance.

fredybear · Posted: Tue Jan 18, 2005 8:18 pm Post subject:

I have one of those in a 78.4 mm.....I asked about the crank a few years ago than i found the reciept.......It says it was a Clouds Crank made back in the 80s or so

turboblue · Posted: Wed Jan 19, 2005 5:09 am Post subject:

fredybear · Posted: Wed Jan 19, 2005 8:16 am Post subject:

Thats what was written on the reciept.......When did CB change thier name?? This was back in 87 when daddy bought the engine used......Still havent found any actual proof of the maker...

turboblue · Posted: Wed Jan 19, 2005 12:59 pm Post subject:

fredybear · Posted: Wed Jan 19, 2005 1:23 pm Post subject:

I posted about it on the CLF....thiers a link to the crank maker if u wanna go check it out....

Rome · Posted: Wed Jan 19, 2005 4:01 pm Post subject:

Matthew: great find in your scrapyard! How about building a 1776 single-port with that crank? 1500 heads (35x32) with 3-angle valve job, Engle 100 cam, stock pushrods, NEW stock springs shimmed a bit, HD rocker arm shaft kit or at least those spacer washers. About high 7's CR. For those heads, find anything from a set of used 32 PDSIT's (watch for worn throttle shafts) to Kadrons.

I built such an engine 2 years ago, but with a forged CW crank, HD steel pushrods, single HD springs, 7.7:1 CR and Kads; 1 3/8" header and single QP muffler. Full doghouse cooling shourd and thermostat system. Drove it for about 2 months just general cruising in a '69 Beetle until the engine developed an oil leak that I have not yet fixed. But it ran GREAT and pulled up moderate hills surprisingly well in 4th.

If you use that crank and the valvetrain I suggested on top, limit your revs to 5G and you should be fine.

k29349@yahoo · Posted: Wed Jan 19, 2005 6:05 pm Post subject:

I thought that Scat was the only one who made a cast CW crank.
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Ace · Samba Member Joined: July 07, 2003 Posts: 1903

By those markings, i'd say it's an old scat volkstroker III crank from the 80s. Not sure about the 9-99 part though.

rote baron · Posted: Tue Jul 29, 2008 10:41 am Post subject:

just bought an 78,4mm crank also with lepe and INPAVI markings...

does anyone know more about those than 3 years ago?
are you really sure, that it is a cast crank?

cheers
max

turboblue · Posted: Tue Jul 29, 2008 11:47 am Post subject:

Your pictures don't show enough to tell but I think it is a cast piece.

These are not VW cranks but shows the difference.

Cast crank parting line.

Forged crank parting line.

_________________
Gary

Turbo VW Sand Drag Buggy

"If you don't run into the Devil every once in awhile, you must be going in the same direction!"

rote baron · Posted: Tue Jul 29, 2008 12:28 pm Post subject:

there is neighter a parting line like the forged one nor one that looks like cast. material looks more like the forgend one you have posted..i am gonna do better pics tommorrow...

night

stoneloco808 · Posted: Tue Jul 29, 2008 6:24 pm Post subject:

Like mentioned cast crank has INPAVI and LEPE stampings. CB Performance(Claudes Buggies), Scat and Bugpack used to buy these cranks with various strokes in bulk and market them as there own. IMO if its for a daily driver that is not going to see any drag slicks with drag race launching, it would be fine.

earthquake · Posted: Tue Jul 29, 2008 8:59 pm Post subject:

You can also tell if its cast or forged by tapping it with a wrench or something, if it rings like a bell its forged, if its a dull thud its cast. I read this pretty quick so I hope one else did not post this already.

Earthquake
_________________
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rote baron · Posted: Wed Jul 30, 2008 1:04 am Post subject:

hey guys thanks for your help.. it rings so it might be forged..

here are some more detailed pictures...

turboblue · Posted: Wed Jul 30, 2008 7:22 am Post subject:

rote baron · Posted: Wed Jul 30, 2008 8:54 am Post subject:

there is no parting line to see.right in the middle the crank is grinded or something. you can see it on the pictures. bur the material looks more like forged but the signs seem to say it is cast


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