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View Full Version : Who's had a lifter collapse? Shovelhead



faceplant1980
06-19-2014, 8:04 PM
Can you guys give me some advice? I think my buddy's shovel has a lifter going down. It comes and goes, runs hard for days then suddenly starts to run like shit, pops, flame out the pipe ticking noise, all the good stuff. It's a 79 fx with dual plugged heads, electronic ignition. Thanks

Sky
06-19-2014, 8:34 PM
Sure it's got hydros? If so, stock, evo, velvas, limiters, or?
Easy enough to check adjustments. Check the tappet screen too.
Which one you think is collapsing? Front ex is farthest from the oil pump. Rear intake is first to get crud after the tappet screen.
Ruled out an intake leak?

faceplant1980
06-19-2014, 8:39 PM
We are pretty sure it's the intake valve on the rear cylinder

Sky
06-19-2014, 8:55 PM
Hopefully it's just dirt.
Tell your buddy to go solids. Can be done with evo style lifters too.
Had a pan that lost an exhaust guide today at work. Valve seats can drop too.

faceplant1980
06-19-2014, 8:59 PM
We are pretty sure it's the intake valve on the rear cylinder

faceplant1980
06-19-2014, 9:00 PM
Stupid phone. Thanks guys!