not sure what pic about ??? oil pump will pump lifters up with light oil within few seconds if set right , light oil allows you set desired depth easily , before running , and rest is set by oil presure after running , li how do fill lifters with out pressure oil ??? was just a thought . that is what they rely on ??? cheers
they have a light oil to protect them dureing storage , but it makes setting desired depth so easy , if you go to far in depth and not sure then back to top and start again , by then you have purged the oil out , if every thing okay , primeing time to lifter doent take long , but after seeing some engines i have started with rocker boxes of , the totaly different flow rates out of rocker exit hole to the spring and valves could explain a lifter being noisy , i had recenty a new set of lifters , ,had lifter rattle on rear intake , took top of eng and intake rocker flowing oil out like river , exhaust rocker blowing air rated oil only ,very small quanity , swapped lifter to exhaust tappet block and vice versa and exhaust flowing all of oil and intake rocker now starveing, pulled 4 lifters out of bike and stripped down , the lifter letting the all the oil presure go had different metering plate pressing dimensions ,these lifters can as set of 4 in unwrapped as packaged from factory , the lifter that was letting most oil flow thru starved the other lifter of presure , so noisy lifter , i wonder how many other builds i have done with similar issues, but not as bad , learning all the time about these bombs ,ps , i start all my builds now with rockers boxes of and put up with haveing to clean bit of oil of to see things are right ,cheers guys
Good idea that one, worked on the old pushrod car engines to find the lazy ones, but because of the fuel tank (injection) and the rocker cover location didnt even think of trying it. Might do that next time, cheap insurance, thanks dyno.
Your keen Hilly, I'll give you that. If you got the idea from another thread, it was a way we used to prime the lifter and stop it ticking. Mine weren't ticking before but it is a habit to do each time as it will often cure ticking lifters that won't stop ticking. The problem with the lifter noise before might have been that the hydraulic ones couldn't function as intended because of adjusting them differently. The answer there might have been to use a bit bigger cam to get more valve lift and set the lifters as per instructions if max lift was the goal, hard to know as they may have changed a lot of other parts too. The lifter trick is not much different to checking the gap on spark plugs to make sure they are right before putting them back in. Can be different for different lifters, depends on the internal construction, gets the air bubbles out of awkward little places inside the lifter and if done manualy flushes oil around inside as well.
if you dont mind litle oil mess , it will show you maybe lifter problems or other obstructions in push rod or rocker oil system ,Captain , these are things that have tripped me up latery
had that years ago brand new crane push rods for my clevo stroker one had not been drilled out at the factory solid centre all the way
