Timing chain + Wear Pads replacement

[Hamstuh]

figured id add a video of the current situation. The chain is audibly heard upon acceleration with the misfires happening only in bank 2. Oddly enough no codes for cam deviation although dropping the engine seems to be the best bet for this issue and potentially any in the future

https://youtube.com/shorts/iTu4ZqKmRhs?feature=share


these are currently the codes ive been getting:
STORED:
P0300 - Random/Multiple Misfires detected
P0306 - Misfire Cyl 6
P0304 - Misfire Cyl 4
P0305 - Misfire Cyl 5

PENDING:
P1319 - Misfire Emission Related
P1318 - Misfire Cyl 6 Emission
P1316 - Misfire Cyl 4 Emission
P1317 - Misfire Cyl 5 Emission

P1524 - Camshaft Adjustment Bank 2

[78F350]

Maybe review this before going further. It has some helpful info you may have missed.
https://www.pelicanparts.com/techarticles/Boxster_Tech/15-ENGINE-Engine_Drop/15-ENGINE-Engine_Drop.htm

[theiceman]

Originally Posted by Hamstuh

will look into that threaded rod, i added the porsche # in my list although ill need to find out whether mine is left or right threaded as a 99' 2.5L. Regarding the pads thats the first im hearing about them not being the ideal upgrade, from my research it seems everyone gets the beige ones as they ARE the updated part. Both Pelican and Parts Geek seem to have the same ones labeled as genuine although ill look into the red ones as well. I did thankfully purchase new OE spark plug tubes prior to this job so thats one thing i can cross off too.

yeah they work .. but the old ones took a fair bit of force to pop off.. the beige ones just kind of sit there .. i even thought i had wrong ones but nope, they depend on tensioner to hold them in place. I don't know if anyone else noticed this.

yes your tool will do exactly the same thing. I goggled it after i posted and saw what it was, so good to go.
The Porsche service manual only states to reaplce bolt#2 with microencapsulated bolt, i just used thread sealer and have zero leaks.

[Newsguy]

Originally Posted by Hamstuh

will look into that threaded rod, i added the porsche # in my list although ill need to find out whether mine is left or right threaded as a 99' 2.5L..

Just rechecked my 99–they are left-hand threads.

[Hamstuh]

Originally Posted by theiceman

you want tensioner rebuild kits .. search around the net and you will find a racing shop that sells them , i think they are in the UK.

in regards to this, wouldnt they just be to 2 seals associated ? or are there literal part replacements because i know the sites that sell OE seals have 2 per tensioner, thatd save me $200+ on just new tensioners if im just replacing those

[theiceman]

Originally Posted by Hamstuh

in regards to this, wouldnt they just be to 2 seals associated ? or are there literal part replacements because i know the sites that sell OE seals have 2 per tensioner, thatd save me $200+ on just new tensioners if im just replacing those

you would have to research as i have never done it .. the whole tensioner from Porsche is in the thousands I think.,

6 caps total , 3 per side.

those are more expensive than the ones supplied by Porsche. Did you ask your local dealer ??

https://www.pelicanparts.com/More_Info/99610525301.htm?pn=996-105-253-01-M100&SVSVSI=785&DID=363

always be aware of what you are buying:

https://www.made-in-china.com/products-search/hot-china-products/Genuine_Parts.html

[Hamstuh]

Originally Posted by theiceman

you would have to research as i have never done it .. the whole tensioner from Porsche is in the thousands I think.,

6 caps total , 3 per side.

those are more expensive than the ones supplied by Porsche. Did you ask your local dealer ??

https://www.pelicanparts.com/More_Info/99610525301.htm?pn=996-105-253-01-M100&SVSVSI=785&DID=363

always be aware of what you are buying:

https://www.made-in-china.com/products-search/hot-china-products/Genuine_Parts.html

thank you very much for the detailed responses. shortly after my previous replies i placed an order from pelican with OE replacements including the guides. i figured if the brown/red ones whatever colour they are, lasted me this long, id do it again. I do just have one more question regarding those rebuild kits, did they involve more than just the 2 seals needed to be replaced on the tensioners themselves or were they just those 2 that can be bought off Pelican ? thank you for the assistance again

[theiceman]

Originally Posted by Hamstuh

thank you very much for the detailed responses. shortly after my previous replies i placed an order from pelican with OE replacements including the guides. i figured if the brown/red ones whatever colour they are, lasted me this long, id do it again. I do just have one more question regarding those rebuild kits, did they involve more than just the 2 seals needed to be replaced on the tensioners themselves or were they just those 2 that can be bought off Pelican ? thank you for the assistance again

as i said i haven't done it , but there is a user on here that has and bought the kits .. hartywags or something like that is his user name, he is pretty active on here so if you can find him PM him. I think he was going to try and start a business rebuilding them so he would know.

oh can you let me know if your new guides snap in when the time comes ? my old ones i used channel locks to pry off, my new ones just kind of sat there and kept falling off until i put the chain and tensioner on.

[Newsguy]

You don't need to disconnect the AC lines. If you follow the Pelican DIY, just remove and set the compressor inside the cabin, behind the driver's seat.

[The Radium King]

what i do is look for where porsche updated the part numbers . i can't speak for the 2.5, but for the 3.2 the pads and the tensioners were updated. typically there is a reason for this. make sure you get the updated part #'s regardeless if from porsche or jobbers.

[997_986]

I subscribed because I will do this job as well, but will not drop the engine. I found something that should find your interest. When removing the shafts there is a chance that a tapped could drop.This is copied from the WSM:

Concern:

Magnetization of the hydraulic valve tappets (lifters) can result in failure.

Information:

Magnetized tools or magnets must NOT be used during removal and installation of the valve tappets. This applies to all valve tappets that are to be reused

The magnetic properties of a magnetized tool or magnet, if used during engine repairs, can cause the valve tappets to fail. For example, the ball of the check valve inside the valve tappet may become magnetized and stick.

When performing engine repairs, only use a suitable non-magnetic tool such as a rubber suction cup (e.g. valve lapping tool) to remove and install the valve tappets.


Another important resource

Addition:
From June 1999, modification of the tensioning element (VarioCam). The tensioning screw was changed to a left-hand thread. This can be identified by the index (57) in the area of the slide rail.
It was used from engine number 65X19696 onwards.

[Newsguy]

I don't know that it will help you, but I was just on the phone with :Pelican parts about this yesterday. I got the rebuild gasket kit and it looks like the o-rings come with it. They confirmed their presence in the kit.

[997_986]

Thanks, to be clear, I would like to rebuild the *actuators" at the same time when I tackle the rails. Du you have a Pelican partnumber for that kit?

[pilot4fn]

Originally Posted by 997_986

Thanks, to be clear, I would like to rebuild the *actuators" at the same time when I tackle the rails. Du you have a Pelican partnumber for that kit?

I got the VarioCam actuator seals kit from Hartech in UK. Very good firm and nice people there.

Hartech are, at least to my knowledge, first and also the only company who you can purchase these seal kits from - Slakker (Hartech partner for US clients) used to sell them in US, but I guess no more.

[Newsguy]

Originally Posted by 997_986

Thanks, to be clear, I would like to rebuild the *actuators" at the same time when I tackle the rails. Du you have a Pelican partnumber for that kit?

I bought it some years ago and am just now finishing the rebuild. Keep in mind this contains everything but head gaskets so it it far more extensive than you need. You might just call them to order just those o-rings. The are very helpful.