The motor needs to not come out.Originally posted by 3-fords1000@Aug 31 2004, 06:42 AM
Does the motor need to come out?
Do the cam bearing need to be replaced?
Do the pushrods need to be replaced?
Are there any special tools required to do it?
Any concerns I need to aware of?
Thanks for your help.
Well, I don't think we'll get 330 rwhp with new lifters but if worked for you, I'll do it. What kind of warrenty does your advice come with?Originally posted by 95SE@Sep 1 2004, 08:52 PM
Unless this is a 1988 3.8L it shouldn't matter.. All 89+ 3.8L's use a roller cam, and roller lifters.. If a lifter collapses, you'll have noisy valves.. Big deal, just replace the bad lifters. I don't see how roller lifters go bad anyway.. I reused mine on my Thunderbird SC (same part number lifters as 3.8 taurus) during the hi-po rebuild, and after neaerly 200k they are holding up to the new high lift cam, hi-po valve springs, and 7k rpm a few times by accident. Not to mention the hp and tq numbers listed in my sig..
The police cam is exactly the same as the NA cam of equal years.
My friend had a '91 taurus 3.8L he bought with a collapsed lifter.. Turns out the oil hadn't been changed in 2 years..
It was remedied by changing the oil, and running a bottle of engine flush through the crankcase in 5 minutes.. Dumping it, then puttign fresh oil in it again.. It free'd up the sticky lifter.. Go figure!
The lifters and the cam lobes wear down to match each other's surface. If you replace one but not the other, it's like replacing brake pads but not the rotor. The worse the condition the rotor is in, the faster it will wear down the new pads... but they WILL work if there's no damage to the rotor.Originally posted by 3-fords1000@Sep 1 2004, 08:39 PM
Okay, here's the situation. The repair manual says to replace the cam if you have to replace ALL of the lifters. Well, if we replaced 1 two weeks ago, 3 this weekend, and a couple more in a few weeks, we don't replace the cam but all the lifters get replaced. How is this different from replacing all the lifters and leaving the cam alone? Will it hurt anything? Are we looking for trouble by not replacing the cam? Money is tight and another $175 for a cam is making things tighter.
We replaced a collapsed lifter a couple weeks ago and now we have found one more that has collapsed and a couple that don't seem to be as "tight" as others. So we are just going to replace them all to avoid having to tear apart the motor again.Originally posted by FlamingTaco@Sep 2 2004, 08:40 AM
Of course, we don't know why you are changing the lifters at all in the first place. Did the spring fail, causing them to stick?
In that case, if the cam lobes look good, don't bother replacing it. You can still replace the bearings if you want to improve oil pressure, but it's a lot of additional work over just replacing the lifters.Originally posted by 3-fords1000@Sep 2 2004, 10:33 AM
We replaced a collapsed lifter a couple weeks ago and now we have found one more that has collapsed and a couple that don't seem to be as "tight" as others. So we are just going to replace them all to avoid having to tear apart the motor again.