Shim under bucket

[peterbaron]

[quote="The ferret_imp" pid="5380" dateline="1667735700"]
Almost all of the manufacturers have adopted that system as the most dependable and trouble free Honda,Yamaha, Suzuki, Triumph etc

Yes, tis so. Particularly impressed with Harley's use of a zero-maintenance hydraulic self-adjusting lifters though. That 1250 engine has bags of character. A low 5,000-mile oil service interval but maybe that is there to give the hydraulics a fighting chance.

I’m unfamiliar, but what is the rev limiter?

For someone like me that does not pay attention I put Harleys in the same category as the classic pushrod American cars that are perfectly happy for you to shift it 4000, 4500.

I know there are a few high-performance models of American cars that can compete with the Germans, etc. but that is a relatively recent and high cost option compared to the normal stuff.

Although I suppose for what Harley charges for the bikes they should compete and not be what they were when I was a kid.

But I would still guess with hydraulic lifters, their RPM limit is probably 7K, 75? Maybe 8K w/ a bikes smaller valves compared to cars- but I wouldn’t expect much past that.


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I’m unfamiliar, but what is the rev limiter?

For someone like me that does not pay attention I put Harleys in the same category as the classic pushrod American cars that are perfectly happy for you to shift it 4000, 4500.

I know there are a few high-performance models of American cars that can compete with the Germans, etc. but that is a relatively recent and high cost option compared to the normal stuff.

Although I suppose for what Harley charges for the bikes they should compete and not be what they were when I was a kid.

But I would still guess with hydraulic lifters, their RPM limit is probably 7K, 75? Maybe 8K w/ a bikes smaller valves compared to cars- but I wouldn’t expect much past that.


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It is actually a tasty 9500rpm and it loves being thrashed. They went for DOHC, for component lightness I suspect and Variable Valve Timing. The 150HP on tap is very top end, very unHarleylike (if that is a real word).

Tev, is it VVT or or CVVT...and on both cams, EX + INT?