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 Post subject: Hirth Crankshaft Pictures, Ident Required
PostPosted: Tue Nov 20, 2012 11:58 pm 
356 Fan

Joined: Thu Jun 12, 2008 12:28 am
Posts: 93
Many thanks to Joris Koning regarding his Hirth Roller Crank articles, in the last two 356 Registry magazines. These crankshafts, and the engines that they were installed in, seem to hold an everlasting interest to lots of people.

Over ten years ago, a friend here in Sydney, purchased in the one lot, 3 Pre-A cars and some boxes of assorted parts. Included in the parts was a Hirth Roller Crank, which I've attached pictures of.

I tried to include as much of the finer details in the pictures, as I could, including
the stamped numbers 1 1 72 and
light scribing on another crank throw which says
RENN SPORT WERKE
01 5/10/68 0010
11/16/88 +0.8.8.8

If anyone can provide us with any comments and information about this Crank, especially which type of engine it was made for, we would greatly appreciate it.

Many Thanks
David Nicholls


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 Post subject: Re: Hirth Crankshaft Pictures, Ident Required
PostPosted: Wed Nov 21, 2012 12:10 am 
356 Fan

Joined: Wed Mar 26, 2008 11:45 am
Posts: 3379
Location: San Francisco
I'm sure not the pro on roller cranks, but that looks a lot like my SPG door-stop.

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 Post subject: Re: Hirth Crankshaft Pictures, Ident Required
PostPosted: Wed Nov 21, 2012 12:15 am 
356 Fan

Joined: Tue Mar 25, 2008 9:28 pm
Posts: 1658
Why not ask the man who rebuilt that crank on 11-16-1988, Jim Wellington.

If interested, call me for Jim's phone number and details.

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 Post subject: Re: Hirth Crankshaft Pictures, Ident Required
PostPosted: Wed Nov 21, 2012 12:28 am 
356 Fan
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Ron-
I think this one is a Hirth, but I did get my 5th or 6th SPG boat anchor in a deal earlier this year. I am stockpiling them for the Zombie Apocalypse, figure I can drop them off the roof like bombs!

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 Post subject: Re: Hirth Crankshaft Pictures, Ident Required
PostPosted: Wed Nov 21, 2012 12:37 am 
356 Fan

Joined: Thu Oct 15, 2009 11:06 pm
Posts: 898
Location: Vista, CA
Hirth crankshaft, for early Super pushrod engines...


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Jon Bunin
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 Post subject: Re: Hirth Crankshaft Pictures, Ident Required
PostPosted: Wed Nov 21, 2012 1:18 am 
356 Fan

Joined: Thu Oct 15, 2009 11:06 pm
Posts: 898
Location: Vista, CA
David,

According to Joris Koning's excellent series of articles, the crankshaft you have is the final pushrod version, a
Hirth 5097c with integral rod journal on the rear flange.

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Jon Bunin


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 Post subject: Re: Hirth Crankshaft Pictures, Ident Required
PostPosted: Mon Nov 26, 2012 6:19 am 
356 Fan

Joined: Thu Jun 12, 2008 12:28 am
Posts: 93
Many Thanks to Brad and Jon for your replies

Meanwhile Joris has given us another wonderful article, on Hirth Roller Crankshafts.

Brad, I'll let the owner deceide where to go from now,
and
Jon, thanks for that defining photo

Much Appreciated
Regards, David


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 Post subject: Re: Hirth Crankshaft Pictures, Ident Required
PostPosted: Mon Nov 26, 2012 8:03 am 
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David,

Thanks for the kind words on my article. I have spoken to Jim and he is going to check his files to see what he can find. The numbers indicate he rebuilt the crank twice. Both times fitting oversize rollers.

Best,

Joris

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