Mike Simard

Does anyone have any CAD drawings of a 928 crankshaft that I could use? Any other engine drawings would be helpful too. I'm waiting for an engine to be delivered from a Rennlist member, the first thing I'll do is measure all the parts for CAD. I would like to get started on a custom crank right away.
I use DynoSim for engine projects and need head flow data and possibly cam timing data to build an accurate simulation. The cam timing data is in the manuals and the valve lift rate can probaly be assumed but the head flow numbers at .1 lift increments would be the holy grail.
I'll be glad to share mine once I accumulate some data.

SharkSkin

From the 78/79/80 tech specs booklet:

Mike Simard

Thank you Dave! Now I need all the misc dimensions in order to make one from scratch, or at least have it quoted.

Jim bailey - 928 International

Simply call Moldex 313-561-7676 and they will quote you a custom 928 crank.They have made many stroker cranks. The road you are planning to travel is deeply rutted simply follow the path ...

Mike Simard

That does sound like good advice and I have talked to Moldex, they do seem to have a good looking product and a fair price but the delivery is a concern. They say 16 weeks which would be fine if it were real, I just don't want to be waiting for a crank a year from now. Do you think that the 16 week lead time is trustworthy? BTW, the crank will have some non-Porsche rods and pistons on it

Sterling, will you carry a pager for the next year or so? I may have some ideas to run by you

Jim bailey - 928 International

Nope it seems it always takes longer but NOW is a good time to order since racing is winding down in many parts of the country Teams get new budgets the first of the year . And no problem with custom rods be careful with pistons pay much attention to rod length counterweight clearance to skirts.

JEC_31

Hoooo haaa hahahahaha you kill me, best comment of the Friday!