Adjustable pushrod
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Tourer
Joined: Sep 2009
Posts: 292
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From: Westland, Michigan
Adjustable pushrod
ok, i got a set of vthunder Adjustable push rods. and the sheet says to adjust 18 flats. and do it on the low spot on the cam.... does it have to be right on the low spot? or is this just so you don't hit the head with the valve... thanks..
Stellar HDF Member
Joined: May 2009
Posts: 2,856
Likes: 127
From: Middle of Kansas
Do it on the low side of the cam. Use a straw in the sparkplug hole and turn the back wheel to get the piston to the top of the stroke which you can see when the straw is at its highest point. Then rock the wheel back and forth a little to make sure you are on the firing stroke and not the intake exhaust stroke. If you are on the firing stroke the pushrods will not move when you rock the wheel. It is best to have it in fourth or fifth gear for this. If the pushrods move you need to turn the engine one revolution to get it on the firing stroke where both valves on that cylinder will be closed.
Stellar HDF Member
Joined: Jul 2011
Posts: 2,583
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From: Boston, MA
You know I may take some flack for this but I like instant gratification so I disassembled the JIMS lifters and thoroughly cleaned them and put them back together and replaced them. Checked cam for clearance then adjusted pushrods to one exact flat past manufacturer's recommendation but as per cam manufacturer. Started her up and she awoke on first rpm. Never looked back.
Why bleed down overnight? I knw the only result would be to make me nervous and or 2nd guess. They (lifters) didn't bleed out the exact same rate. I would do what Jim K said but wait the fifteen minutes of afforded bleed down then hit the start button. You bend a pushrod? Drop a valve? Mash the crank, cam and pinion gears? You did something wrong. I cannot see how an overnight bleeding session would have prevented any disaster.
Now if I'm wrong please tell me but explain it too.
Why bleed down overnight? I knw the only result would be to make me nervous and or 2nd guess. They (lifters) didn't bleed out the exact same rate. I would do what Jim K said but wait the fifteen minutes of afforded bleed down then hit the start button. You bend a pushrod? Drop a valve? Mash the crank, cam and pinion gears? You did something wrong. I cannot see how an overnight bleeding session would have prevented any disaster.
Now if I'm wrong please tell me but explain it too.
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
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From: la la land jerzey
i start with an intake as it is in the center turn the bike rear wheel in Hi gear w/ no sparkplugs till one of the intakes is at full lift < the other intake is at the low spot at that point < adjust that one - than do the same for the other -- same thing for the exhaust turn till one is at full lift adjust the other
been doing it this way since 1965 in a bike shop - solid and hyd lifters does not matter
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