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1330 -hydraulic valve actuators ?
- Thread starter irvin48
- Start date
Roadster Renovations
New member
Not sure how they work. They may be a disk system here by the looks for them.
I could find nothing else but these in the breakdown. It looks like the black part is what makes contact with the cams.
billybovine
Active member
Hydraulic lifters was one of the promoted features of the 1330 engine. Never have to shim the valves again.
Bob Denman
New member
...Not that the 998s seemed to need much adjusting... :clap:
I know a rider with over 123,000 miles on his GS: no adjustments! :thumbup:
I know a rider with over 123,000 miles on his GS: no adjustments! :thumbup:
Roadster Renovations
New member
They say hydraulic, but darned if I can see how they did it.
BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
VALVE ADJUSTMENTS
. But how many owners got NERVOUS un-necessarily and had them checked at 14,000 & 28,000 etc and PAID $ 600.00 + ( hoping the Stealer actually did it ?????? )...........jmho........Mike :thumbup:
Bob Denman
New member
I'm pretty sure that there are 998s out there that could use a bit of tinkering under the valve covers.But for most folks; I'll bet that 50,000 miles would not be a risky proposition... :thumbup:
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irvin48
New member
had a 650 nighthawk. bulletproof. great bike.
billybovine
Active member
Not sure what you mean? The exploded view of parts in a previous post shows the internals of the hydraulic lifter. They are not any different than almost every modern car on the road today. Really simple tech.
billybovine
Active member
Hydraulic lifters are not compatible with high revs. So the maximum rpm the engine is designed to rev at will most likely determine if a solid lifter or hydraulic lifter is used.
JayBros
Well-known member
As I look at the parts in the diagram Doc included, #9 is the lifter bucket that holds a small quantity of oil and #8 is the Cotter Valve that keeps the volume of oil in the lifter bucket. Not shown, I believe because of the detail of the drawing is the bore system in the buckets through which oil under pressure is pumped into the bucket but may be in the circumfrential groove in the outside of the bucket. If you blow up the drawing you can see six of twelve bores in the cyclinder head through which pressurized oil is pumped into the buckets. It is a truly simple system. Anyway, that's my story and I'm sticking to it. YMMV.
Bob Denman
New member
:agree: 8100 rpm, versus 9500 rpm for the 991 series engine.
(7500: if you're revving it up in neutral.)
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Roadster Renovations
New member
They are usually grooved on the outside in the cages I have seen so that oil can be pumped into through the oil galleries. The name it has nothing in it about hydraulic. They are calling them: Valve Lifter Bucket Block.....:yikes:
Expensive little buggers - $24. each and you need 12....
[FONT="]Valve Lifter Bucket Bloc[/FONT]
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