Valve train noise 525 efi after top ends
08-10-2019, 02:03 PM
#11
When you replaced the rockers, did you reuse the OEM polylocks or use the ones that came with the Harland Sharpes? The OEM polylocks are shorter than the ones that usually come with other brands and the valve covers could be hitting them.
08-10-2019, 02:28 PM
#12
Platinum Member
Platinum Member
iTrader: (6)
you said one of your engines, twin engines, one is stock and the other one is not ?
08-11-2019, 12:06 AM
#14
Charter Member # 55
Charter Member
Easiest way to do it is with the intake manifold off. Then you can actually see when the lifter compresses.
08-11-2019, 10:58 AM
#15
Registered
Thread Starter
Join Date: Aug 2019
Location: Vermont
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
yes, I'm only doing one engine at the moment, had a pushrod pop off a rocker due to a valve stuck in the guide. Trying to get it back on the water asap so I'm not wasting the entire short summer here in Vermont.
08-11-2019, 11:27 AM
#16
Registered
Thread Starter
Join Date: Aug 2019
Location: Vermont
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
I used the polys that came with the rockers, the center pin on the harlands is recessed, the installed height of the poly is lower than the top of the rocker arm. I'm gonna run it today with covers off and see what happens.
08-11-2019, 11:47 AM
#17
Platinum Member
Platinum Member
iTrader: (6)
just curious why you didnt stay with the OE lifters and push rods unless the Dart heads didnt allow for it
08-11-2019, 12:06 PM
#19
Registered
Had two 500efi’s refreshed including new lifters. Had issues with both motors from the get-go. Lifters did not want to stay pumped up. Thing sounded like a tractor at idle. Played with pre load and oils. Nothing worked. Ended up replacing with Johnson’s. Problem went away and haven’t had an issue since *knock on wood*
