David Mac Posted May 22, 2007 Report Share Posted May 22, 2007 I have a reground cam (not stock) and I have noisy valves. What is the best method to find the lowest spot on the cam lobe so to be sure I am adjusting the valve properly. I tried bringing #1 up to TDC and you are suppose to be able to adj. both the In. & Ex. for #1. but at DC the Ex. value isn't at its lowest point. Anyone with a procedure to adjust the valves when having a reground cam would be helpful. Thanks guys, David Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted May 22, 2007 Report Share Posted May 22, 2007 Regrind of a cam to for longer duration and higher lift does not alter your ability to set the lash on the valve...the base is undercut so the ramp and toe can be ground offset for duration and adjusted lift. Set your valves according to your timing card..sometimes they are say set a bit more open by a few thousandants. Be sure you ARE on TDC and not 360 out..the exhaust will be off-seat if you are on exhaust stroke of the engine... Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted May 22, 2007 Report Share Posted May 22, 2007 Be sure you ARE on TDC and not 360 out..... Tim; Not sure how you can be 360 degrees out? 180 degrees is possible on the cam but not 360:confused: Best way to set the valves is with the engine running and using a "go-no-go" set of feeler gauges. Chances are the recommended setting for valve lash with a regrind are not the same as the stock settings. Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted May 22, 2007 Report Share Posted May 22, 2007 1 complete rotation of the 4 stroke is 720 degrees at the crank which is 360 on the cam..... Quote Link to comment Share on other sites More sharing options...
Don Coatney Posted May 22, 2007 Report Share Posted May 22, 2007 1 complete rotation of the 4 stroke is 720 degrees at the crank which is 360 on the cam..... I agree Quote Link to comment Share on other sites More sharing options...
bkahler Posted May 22, 2007 Report Share Posted May 22, 2007 Tim;Not sure how you can be 360 degrees out? 180 degrees is possible on the cam but not 360:confused: Best way to set the valves is with the engine running and using a "go-no-go" set of feeler gauges. Chances are the recommended setting for valve lash with a regrind are not the same as the stock settings. Don, You got me on this one. How in the world do you set the valve lash with the engine running on these flat head engines? Even with no fenders on my truck and just the exhaust system in place I don't see how you could get your hands down in there without getting burned to a crisp The pilot-house pickups don't have the access panels that the cars do which would make it even tougher once the fenders are on. Inquiring minds want to know Thanks, Brad Quote Link to comment Share on other sites More sharing options...
Plymouthy Adams Posted May 22, 2007 Report Share Posted May 22, 2007 Very carefully with good gloves...see Louman Earle..he be the regional expert on flathead valve adjust..he has the patience of Job.... Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted May 23, 2007 Report Share Posted May 23, 2007 Don,The pilot-house pickups don't have the access panels that the cars do which would make it even tougher once the fenders are on. Inquiring minds want to know Thanks, Brad Sure they do. The whole inner fender comes out. Then pull the wheel off and you have access to the side of the engine. Quote Link to comment Share on other sites More sharing options...
bkahler Posted May 23, 2007 Report Share Posted May 23, 2007 Sure they do. The whole inner fender comes out. Then pull the wheel off and you have access to the side of the engine. Merle, its been so long since I took my truck apart (10 years ) that I don't remember the geometry of the inner to outer fender, etc. Knowing that I can do this sure makes me feel a LOT better One of my big worries had always been how to adjust those darn valves "hot" like the manual says. Dang, now I can't wait to get the fenders on just so I can try it :D Thanks, Brad Quote Link to comment Share on other sites More sharing options...
Jim Saraceno Posted May 25, 2007 Report Share Posted May 25, 2007 Here is a procedure for adjusting valves that should work... 1 Quote Link to comment Share on other sites More sharing options...
David Mac Posted May 25, 2007 Author Report Share Posted May 25, 2007 Thanks for the input and advice, as usual the forum is a great resource. David Mac Quote Link to comment Share on other sites More sharing options...
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