14-07-2023, 11:05 AM
(14-07-2023, 10:55 AM)Tony Griffiths Wrote: What are people's thoughts on just nipping up two diagonal engine bolts and, in some cases, with a strong spring beneath one of the bolts? I know that some high-mileage, very experienced owners take that approach while others, of similar expertise, bolt the whole thing down as hard as possible. As far as I'm aware, both methods do not appear to cause any sort of problem.
Personally Tony I don't think it's a great idea using your crankcase to stiffen the chassis unless it was conceived to do so. It's enough trouble keeping three bearings in line without imposing an extra duty. Two-bearing owners may feel this gives them a holiday, but they still have block to crankcase joints.
On the flip side I've never done all my bolts up tight (I've gone through phases of doing one or two up fully, but the rest are just nipped up and with plenty of rubber - or as you say, springs - to permit flexing) and I have not yet discovered a problem - other than the need to check now and then that they haven't fallen out completely.