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Join Date: Aug 2009
Posts: 481
Dig the Vid! .
some long duration cams(overlap) can cause issues with finding the "heel" of the cam.
The surest way to do it is; if the rear intake lifter is at it's peak in travel- adjust the front intake and vise versa. then do the same for the exhaust rods.
If the rear ex lifter is at full rise adjust the front ex.
Example
zero lash= free spinning with no up and down play
1 front intake up = adjust rear intake
2 rear intake up = adjust front intake
3 front exhaust up = adjust rear exhaust
4 rear exhaust up = adjust front exhaust
this works for hydraulic lifters as well just have to set them the recommended turns after zero and wait for them to bleed down before setting the next rod.
Recommended turns = however many turns the pushrod manufacturer states in there instructions.
If you dont have the paper or dont know who made them you can get a thred gauge
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Join Date: Nov 2011
Posts: 136
Quote:
Originally Posted by Sky
Dig the Vid! .
some long duration cams(overlap) can cause issues with finding the "heel" of the cam.
The surest way to do it is; if the rear intake lifter is at it's peak in travel- adjust the front intake and vise versa. then do the same for the exhaust rods.
If the rear ex lifter is at full rise adjust the front ex.
Example
zero lash= free spinning with no up and down play
1 front intake up = adjust rear intake
2 rear intake up = adjust front intake
3 front exhaust up = adjust rear exhaust
4 rear exhaust up = adjust front exhaust
this works for hydraulic lifters as well just have to set them the recommended turns after zero and wait for them to bleed down before setting the next rod.
Recommended turns = however many turns the pushrod manufacturer states in there instructions.
If you dont have the paper or dont know who made them you can get a thred gauge
Bought ready to start my shovel, and was having a pain in the ass time finding the heel of my cam to adjust the pushrods.. thank you for this tip.
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Join Date: Jul 2010
Posts: 532
On my Ironhead I set the pushrods so they spin freely with no up and down movement after tightening the locknuts.
On the Shovel, set 'em so they can barely be turned with oily fingers or she rattles like rocks in a Tecate can. Gotta be careful that ya don't get 'em toooo tight.
Great vid! Good on ya for taking the time to film and post.
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Join Date: Feb 2010
Posts: 315
That's pretty much how i do it the only difference being is that once I get the pushrod to where I can barely spin it with my fingers, I rotate the engine and put tension on the pushrod before I lock the jam nut down. It saves me from having to use 3 wrenches since the bottom of the pushrod is held in place by pressure. Good vid