What are the benefits of replacing the pushrods?
#1
What are the benefits of replacing the pushrods?
Most of mine look like the one in the photo below... I'm assuming the benefits would be marginally greater valve opening since the material that's worn off the old ones would be replaced? Or do the hydraulic lifters account for that difference?
Last edited by Brandon318; 01-19-2022 at 09:10 PM.
#2
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Brandon318 (01-20-2022)
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#9
Perhaps it depends on how many miles you think you'll drive the beast. Shop manual says wear pattern at cam contact surface should be even and circular. If pitted or square wear pattern (i.e. lifter is not rotating properly) then replace the lifter. Likewise, if rod contact surface is pitted, then replace the lifter. The gap under a straight edge on the flat end of the lifter should be less than 3 thou, as I recall. New lifters are flat, so they contact the cam in a very specific way to help them spin in the bore. You won't be sorry installing new lifters and a new cam now, versus later wishing you'd done it. The cams and lifters are known to wear out in Rover V8s, so if you have the engine apart, it makes sense to renew those parts, if mileage is more than 80K or so. The good news is these parts are easy to get, and you'll save on gas down the road.
RPI Engineering (England) has very good write ups about what to look for with photos on line. They really know these engines. That's my two cents worth.
RPI Engineering (England) has very good write ups about what to look for with photos on line. They really know these engines. That's my two cents worth.
#10
Perhaps it depends on how many miles you think you'll drive the beast. Shop manual says wear pattern at cam contact surface should be even and circular. If pitted or square wear pattern (i.e. lifter is not rotating properly) then replace the lifter. Likewise, if rod contact surface is pitted, then replace the lifter. The gap under a straight edge on the flat end of the lifter should be less than 3 thou, as I recall. New lifters are flat, so they contact the cam in a very specific way to help them spin in the bore. You won't be sorry installing new lifters and a new cam now, versus later wishing you'd done it. The cams and lifters are known to wear out in Rover V8s, so if you have the engine apart, it makes sense to renew those parts, if mileage is more than 80K or so. The good news is these parts are easy to get, and you'll save on gas down the road.
RPI Engineering (England) has very good write ups about what to look for with photos on line. They really know these engines. That's my two cents worth.
RPI Engineering (England) has very good write ups about what to look for with photos on line. They really know these engines. That's my two cents worth.
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