I run the same bearings in my TR250 vintage racer, they are the bearing
to run. FWIW, I have never done the coating route, and in 20 seasons on
track in a TR3, TR4 and the 250 have never had a bearing issue either.
Set the correct clearance, and you will be fine.
On 2019-06-26 22:37, Tony Drews via Fot wrote:
> For the TR-4 (race engine) I do the Tri-Metal bearings (rod and main)
> from www.bpnorthwest.com [1]. I also have them ceramic coated by
> Calico coatings. I've not had issues due to the bearing / coating in
> 15+ years of hard racing.
>
> I know you're asking for the TR-6 - they have tri-metal for that too.
> Of course I have no direct experience on the 6 cylinder motor.
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