The bottom seals were dried out on this one too.
after reading more about it I noticed on the write up it stated the new lifters should be in oil over night. After chasing new spark plugs etc. after lunch I decided not to mess with it further. Tomorrow and Saturday won’t be able to get to it. Hopefully, Sunday we’ll be able to complete the job and start the car.

 

PS: fill them up with oil by submerging them in a pan of motor oil and working them a little before installing them. My understanding is that otherwise, they will be noisy when installed.
Andy ;-)

 

[QUOTE=71-3.0-911;17083556][QUOTE=Madturk;17083426]

The seals go first then the adjusters get scored and deformed. Mine died at about 60K miles. Probably near the average service life before the seals begin to fail.

Andy

 

You’ll be back to tearing up the mountainside in no time

 

Luckily, it’s raining here this weekend
So, technically I’m not missing any good driving.
I’m so selfish

 

I know it seems like good engineering sense, filling the lifters before assembly, but they drain of oil sitting in a non-running engine, and are designed to refill when started...so it's not a bad idea but will it make any difference? When they fitted them in the factory, they won't have sat in oil overnight - no Porsche garage/shop/specialist will have time to leave a customer's new lifters in oil overnight.... another reason you could say that you are the best person to work on your car

And just to be clear, the seals on the lifters that I removed were more 'fried' than 'dried' - five of them were working as designed, but had clearly hardened due to time/temp - when I removed the old lifters each seal broke into pieces, but they were all 'working'.

In my case, the seal that had failed in-situ must have been eaten by the engine, and then the lifter started making the noise.

My engine has done 70k miles and I have no record of any lifters being changed in the past.

 

Do you mean you have taken the lifters out, and the seals fell apart?

...and did they all have seals still in-place?

 

Everything was in place. When opened the valve cover one of the gasket/sseals looked bad.

 

Have you taken out the upper LHS lifters yet?

 

No
I have not yet.
It’ll be Sunday.

 

Interesting. I am still trying to get my head around the $10-15k quote to do this. Did that include dropping the engine and resealing the entire top end + new wires plugs and whatever is needed? If not these shops by you are smoking crack.

Hope it resolved the problem

 

Not sure soaking over night does much. I have soaked them previously and also simply dunked them all in oil prior to installing them...they slide right in. I also put a little dab of assembly lube on the lifter foot and rocker arm foot, but not really required. Be sure to not remove them once inserted as it will tear the seal. You can see the lifter has a radius/chamfer on the seal.





It's important that you remove the DME, crank the engine and build oil pressure, then replace DME and fire it up. They quiet down pretty quickly.

 

Agreed on soaking them. I soaked mine and still had a bit of a clatter for a few seconds until they all pumped up. This was even after I cranked with the DME removed. I'm not sure it made any difference.

 

Lifters are in on the left top and bottom. The sound is still there