Joe, To be honest, I can't see the crank clearly enough in the photos to make a clear decision for you - and I've not yet seen another Spit crankshaft in the flesh to compare it to. What I will say is that grinding copious amounts of the lobes away is normal practice for balancing, in some circles at least. When I worked for Perkins (industrial diesel engine manufacturers) I watched the process being done in the factory - the guy would spin the crank up on a machine which would tell him the state of balance, then he would take it off and just press one lobe or another up against a grinding wheel for a few seconds, then return to the testing machine.
Whether this was done in the Triumph factory I don't know, although I have some vague feeling that they didn't bother trying to balance the cranks at all after the bearing surfaces had been machined - but I don't remember where I heard that, so don't take it too seriously. In any case, it is quite possible that the crank has been re-balanced during some previous rebuild. So I wouldn't take the grinding evidence as any issue that should cause you to think about replacing the crankshaft. Richard & Daffy This email and any attached files are confidential and copyright protected. If you are not the addressee, any dissemination of this communication is strictly prohibited. Unless otherwise expressly agreed in writing, nothing stated in this communication shall be legally binding. /// [EMAIL PROTECTED] mailing list /// Send admin requests to [EMAIL PROTECTED] /// or try http://www.team.net/cgi-bin/majorcool /// Archives at http://www.team.net/archive /// Send list postings to [EMAIL PROTECTED] /// Edit your replies! If they include this trailer, they will NOT be sent.
