Noisey Valves - Need advice from FE Experts!
#46
09-27-2018, 05:42 AM
No use being sorry, I feel your pain.
Listen, you cannot just simply throw differing push-rod lengths at it and expect correct results. FORD service push-rods came in STD., .030 U/S, .060 O/S and .060 U/S lengths to adjust a non-adjustable FE valve-train for service. This approach will determine tappet plunger depth/proper pre-load.
Now with an aftermarket performance cam to come to terms, you may have to use an adjustable push-rod(s) to determine correct lash (and order the lengths needed from a cam manufacturer). The tappet has to be collapsed to measure the lash and what length push-rod you will need to correct the lash.
And to throw a little more confusion to the discussion, you also need to study CORRECT VALVE-TRAIN GEOMETRY. If you bought a HI-PO CAM, you should be able to enjoy it.
Listen, you cannot just simply throw differing push-rod lengths at it and expect correct results. FORD service push-rods came in STD., .030 U/S, .060 O/S and .060 U/S lengths to adjust a non-adjustable FE valve-train for service. This approach will determine tappet plunger depth/proper pre-load.
Now with an aftermarket performance cam to come to terms, you may have to use an adjustable push-rod(s) to determine correct lash (and order the lengths needed from a cam manufacturer). The tappet has to be collapsed to measure the lash and what length push-rod you will need to correct the lash.
And to throw a little more confusion to the discussion, you also need to study CORRECT VALVE-TRAIN GEOMETRY. If you bought a HI-PO CAM, you should be able to enjoy it.
I think all the correct procedures recommended by Ford and Lunati were followed. But I will verify that the factory valve clearance of .1-.2 is being maintained.
My main issue right now is the #8 exhaust valve with seem to have excess friction.
I am going to the shop that build my engine today to talk to them about it...stay tuned!
#47
09-27-2018, 08:18 AM
I think all the correct procedures recommended by Ford and Lunati were followed. But I will verify that the factory valve clearance of .1-.2 is being maintained.
My main issue right now is the #8 exhaust valve with seem to have excess friction.
I am going to the shop that build my engine today to talk to them about it...stay tuned!
My main issue right now is the #8 exhaust valve with seem to have excess friction.
I am going to the shop that build my engine today to talk to them about it...stay tuned!
#48
09-27-2018, 11:35 AM
#49
09-27-2018, 11:42 AM
#51
09-27-2018, 09:10 PM
#52
10-04-2018, 08:48 PM
My guess, it probably should have had a seat put in. He excessively ground the worn seat till the valve was sunk so far that it needed a shim to get the right spring installed height.
#53
10-04-2018, 09:00 PM
... unbelievable ...
#55
10-07-2018, 07:17 PM
#57
10-07-2018, 07:35 PM
Cargo Master
#58
10-07-2018, 09:22 PM
Like I said in post 52, they should have put seats in. The valve train geometry, pushrod length, lifter preload, spring installed height as well as air flow is effected by sinking valves like that. I would say now is the time to learn how to check for pushrod length, it isn't that hard. All you need is a set of light checking springs and an adjustable pushrod to check for the right length. Just because lifter preload is ok does not mean pushrod length is right. I would want to see what the valve tip sweep across the valve stem looks like now and correct it if needed. The sweep could be so far off now with the valve sunk that the first time you lean on it the rocker tip could just barely go off the edge of the valve tip, bump the retainer and presto....... the keepers go flying leaving the valve to drop. Push rod length is very important.
#59
10-09-2018, 09:06 PM
#60
10-09-2018, 09:10 PM
Like I said in post 52, they should have put seats in. The valve train geometry, pushrod length, lifter preload, spring installed height as well as air flow is effected by sinking valves like that. I would say now is the time to learn how to check for pushrod length, it isn't that hard. All you need is a set of light checking springs and an adjustable pushrod to check for the right length. Just because lifter preload is ok does not mean pushrod length is right. I would want to see what the valve tip sweep across the valve stem looks like now and correct it if needed. The sweep could be so far off now with the valve sunk that the first time you lean on it the rocker tip could just barely go off the edge of the valve tip, bump the retainer and presto....... the keepers go flying leaving the valve to drop. Push rod length is very important.