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Hydraulic lifters on these cars questions...

Johnny-5
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Johnny-5 Member

Johnny-5

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Does anyone know if the lifters are supposed to be soft when pushing in the piston or are they supposed to be hard? Im reading conflict information on these. I have a few that are hard to push down and the rest seem to be soft.

 

Any advice would be great....thanks

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Johnny-5

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19 minutes ago, JFP in PA said:

When working properly and pumped up full of oil, they should be firm.

 

Thanks for the response. I was finally able to find more info on the computer rather then sitting on my phone outside in 100 degree weather! 🤪 JFP do you know anything about popping these out and cleaning them up? I read you just have to hit these hard on some 2x4 and they should pop out? I tried that and was having a hell of a time getting it off. It did bleed out oil and is now softer to push with my fingers. Im thinking of doing that or just try to put them into clean oil and pump them a few times. Any suggestions?

 

On a side note I did what you suggested and removed the oil pan and found a few plastic pieces but other then that nothing else. So now Im in the process of changing out the variocam guides on bank 1 and hopefully completed by tomorrow and bank 2 started as well. After that its the IMS and I think Im good after that! Oh and the RMS which I have as well. 

 

Trying to get the boxster up and running within the next month or two! Fingers crossed!

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Johnny-5

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3 hours ago, JFP in PA said:

We have not resorted to taking them apart, we replace them if they have issues.

 

Makes sense. So once I dunk these in oil and press on them a bit they should keep the oil inside and should be hard right? Once I take them out should there be a time frame of when I put them back in to see if they are bad? Im assuming if they don't get hard after a few presses in oil they are bad right?

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JFP in PA Member

JFP in PA

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The problem with this style unit is they are "dead end", meaning oil does not flow through them, but just enters and stays there.  Result is crud builds up in them, causing problems.  One favorite method to clean them out is to put them in heated Marvel Mystery oil and pump them to get as much crud out as possible, then do the same in clean room temp engine oil before reinstalling them.

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Johnny-5

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34 minutes ago, JFP in PA said:

The problem with this style unit is they are "dead end", meaning oil does not flow through them, but just enters and stays there.  Result is crud builds up in them, causing problems.  One favorite method to clean them out is to put them in heated Marvel Mystery oil and pump them to get as much crud out as possible, then do the same in clean room temp engine oil before reinstalling them.

 

so when doing this are they supposed to get hard when oil is in them? Or still semi spongy? I was out playing around and had the one lifter that was out and was pumping it in clean oil to see if it gets hard and doesn't. Tried it with another one I had laying around and still doesn't get hard either?

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JFP in PA Member

JFP in PA

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Just now, Johnny-5 said:

 

so when doing this are they supposed to get hard when oil is in them? Or still semi spongy? I was out playing around and had the one lifter that was out and was pumping it in clean oil to see if it gets hard and doesn't. Tried it with another one I had laying around and still doesn't get hard either?

 

Sounds like they may be done. 

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Update: So I ended up taking all the lifters out and soaked and was pressing on them all and it doesn't appear to be getting firm. just looks like its pumping out the oil from the small hole on the side. Anyways so Im ordering a full new set for both sides! 

 

Question JFP:

So when I get these new ones is there anything else I need to do to the lifter guide plate or anything? Other then just lubing them up and soaking the new ones in oil? When I press on them they should get firmer right? And Im assuming out of oil they shouldn't get soft? 

 

Thanks JFP for all the help!

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JFP in PA Member

JFP in PA

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When full of oil, they should be firm.  Before installing them into the engine, pump them full of oil, and then apply some assembly lube where the cam lobes contact them to prevent them from developing wear before the engine oil starts moving around.

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Johnny-5

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Ok so I got my full set of new lifters and about to dunk them in oil. How long should I let them sit before putting them in? Also when I press down on them they are extremely hard. So a few questions. 
 

Ive heard these should be semi firm prior to install as they can cause issues if it’s to hard? Is this true?

 

and if it’s to hard what can I do to loosen them up a bit?

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2 hours ago, JFP in PA said:

They should individually be pumped up while submerged in oil, and should come firm when the air is out of them.  Then leave them submerged until you are ready to install them.


well in my case they all came extremely firm as I can’t push down on them at all. So do I just put them on or do I need to soften them up first?

 

im just hearing conflicting information stating that you should not put in extremely firm lifters as it can cause issues with valves hitting pistons, etc and that they should be semi firm with a little press ability. 
 

also reading that I should leave them out of oil and let them sit for a few days and see if they leak and soften. If so they are bad. 
 

just trying to figure this all out prior to putting them in. 

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Johnny-5

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2 hours ago, JFP in PA said:

Let them soak overnight, then try pumping them.


ok I’ll dunk them in oil and let them sit with the holes facing up and tomorrow I’ll try to push down on them and see what happens. I got some 0w40 which I was using before but since moved to 5w40 but it really shouldn’t matter just using what I have for oil and dispose off once I get these all in. 

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Johnny-5

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12 minutes ago, JFP in PA said:

Then I would say to leave them submerged in the oil until you are ready to install them; they sound like they are ready to go.


So these followers should be pretty solid when they go back in correct? Not semi firm meaning I can still press on them? That’s pretty much what I need confirmation on?

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On 6/13/2021 at 2:42 PM, JFP in PA said:

Correct.👍


I’m thinking of taking off the follower plate is there a particular order I need to remove and reinstall the plate? Figured since I’m there I remove and check for cracks etc I’m pretty sure it’s not a crucial but figured I ask. 
 

by the way thanks jp for all your help!

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JFP in PA Member

JFP in PA

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1 hour ago, Johnny-5 said:


I’m thinking of taking off the follower plate is there a particular order I need to remove and reinstall the plate? Figured since I’m there I remove and check for cracks etc I’m pretty sure it’s not a crucial but figured I ask. 
 

by the way thanks jp for all your help!

 

Can you be more specific on what "follower plate" you are referring to?

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Johnny-5

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10 minutes ago, JFP in PA said:

 

Can you be more specific on what "follower plate" you are referring to?


hydraulic lifters / followers the plate those sit on in the cylinder head. It’s held in with Allen’s if I’m not mistaken

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JFP in PA Member

JFP in PA

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6 minutes ago, Johnny-5 said:


hydraulic lifters / followers the plate those sit on in the cylinder head. It’s held in with Allen’s if I’m not mistaken

 

If this is what you are referring to:

 

spacer.png

Porsche literature describes it differently (lifter housing), but to answer your question, there is no particular procedure to remove it, but it needs to be retorqued to 7.5 ft. lbs. when reinstalled

 

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Johnny-5

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1 minute ago, JFP in PA said:

 

If this is what you are referring to:

 

spacer.png

Porsche literature describes it differently (lifter housing), but to answer your question, there is no particular procedure to remove it, but it needs to be retorqued to 7.5 ft. lbs. when reinstalled

 


that’s exactly what I was referring too. Sorry I still don’t know all the correct terminology for everything. 
 

I figured it didn’t have a particular procedure but figured I ask.

thanks 🙂 

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