pushrod adjustment question

[bad chad]

hey guys i got a question, i adjusted my pushrods last year all went good.. im getting ready to adjust them again i went 4 turns past zero lash last year,and i want to go 3 now... i still have some ticking... so my question is i kinda getting confused some reason.. chacha instructions says get the front cylinder on tdc. and both rods will be at the lowest of travel. but he says he uses the travel method. so if i use the tdc method does that mean i can adust both intake and exhaust on front cylinder since they are at the lowest travel, while the piston is at tdc??? he says put tranny in high gear and watch for highest travel and do the opposite rod but what confusing is if you start turning on your tire your going to be on and off your compression stroke so if you use that method does it not matter as long as you watch for the highest travel rod and do the opposite rod.. im just making sure these are two different ways you can do it in his write up... thanks guys this is a easy task to do i just some reason went blank since last year....

 

[outdoorsman26]

if you are looking at the rear cyl.... rotate your rear tire (remove the spark plugs) until you see the rear exhaust valve go ALL the way down (so its open) think of your cam as egg shape.... an you are trying to find the small end, when you notice that the valve isnt going down anymore, thats it now go back and forth to find the center and adjust the

front exhaust!!!!

you all ready know bout leting it sit right?? now on to the intake rotate the tire so the rear intake is all the way open just like you did on the exhaust and adjust the

front intake

you get the idea??? same for the rear let me know if ya dont and I will call ya!!!!

 

[bad chad]

thanks men, yeah i uderstand how to do all of it. I was just wondering if you do the travel method like you taking about and chacha you dont have to worry about being on tdc....am i correct.. what i mean is when you rotate the rear tire it dosent matter about trying to find compression stroke you just watch for its very top travel and adjust the opposite rod witch it will be at its lowest point.. right guys

 

[bad chad]

what yall think????

 

[Raywood]

Well I'll chime in here. I just re-did mine again Friday night before my 340 mile ride on Saturday.

Just for background the S&S manual and the BDM manual have different instructions for adjusting these lifters.

When I do the front cylinder I just put the bike at TDC verified by the flywheel marks. Both lifters will be at the flat spots on the camshaft.
For the rear cylinder there are no marks (due to many cam options) unlike my ole shovelhead so I rotate the tire till both rear lifters are at there lowest point. This should be TDC on the rear cylinder. I then adjust the lifters together. Seems to have worked well for me so far.

:2thumbs:

 

[bad chad]

thanks raywood, i will tackle it, maybe tommorow.... that the way i thought just wanted refresh my memory....

 

[Olde Man]

There are two piston top dead centers when related to camshaft timing. One is after the compression stroke when the plug will be fired. The other is after the exhaust stroke. If you use the TDC method you need to use the compression stroke because the valves will be slightly open, barely detectable, due to overlap on the exhaust stroke. The way to tell the differance is to pull the plugs, put dog in 5th or 6th, turn tire while watching rockers or pushrods. The exhaust needs to go open then close and then the intake needs to go open then close and then slowly, going in the same forward direction, bring the piston to top dead center. A soda straw works well to tell where the piston is. You should be on the compression stroke at TDC ready to adjust valves.

 

[chacha]

3L&1D wrote;

The exhaust needs to go open then close and then the intake needs to go open then close and then slowly, going in the same forward direction, bring the piston to top dead center. A soda straw works well to tell where the piston is. You should be on the compression stroke at TDC ready to adjust valves.

Nice trick!

 

[john sachs]

There are two piston top dead centers when related to camshaft timing. One is after the compression stroke when the plug will be fired. The other is after the exhaust stroke. If you use the TDC method you need to use the compression stroke because the valves will be slightly open, barely detectable, due to overlap on the exhaust stroke. The way to tell the differance is to pull the plugs, put dog in 5th or 6th, turn tire while watching rockers or pushrods. The exhaust needs to go open then close and then the intake needs to go open then close and then slowly, going in the same forward direction, bring the piston to top dead center. A soda straw works well to tell where the piston is. You should be on the compression stroke at TDC ready to adjust valves.

You're RIGHT ON...............:2thumbs:
John