Porsche Pandemonium. Tales of woe.

[CarreraLightweightRacing]

Had the pleasure of opening up my engine yesterday to sort out a hydraulic lifter issue. Well today, after having it all sealed back up and confirming timing was all good, I fitted the head plugs into the rear camshaft cavities and then moved onto the final one where I decided it would be a good idea to start all over again





So to make me feel a little better whilst I reorder new plugs and spend the night cleaning cylinder head mating faces; please share your wonderful stories that still keep you up at night

[Escy]

I bet your heart sank when that happened.

Tell me more about the job as I think i've got similar on my Boxster. What was it doing? Are the timing tools necessary if you don't remove the chain on the cams? I know the crank can be locked with a drill bit.

[LeighB]

Escy said:

I bet your heart sank when that happened.

Tell me more about the job as I think i've got similar on my Boxster. What was it doing? Are the timing tools necessary if you don't remove the chain on the cams? I know the crank can be locked with a drill bit.

Do you have a knocking/tapping sound as a mate of mines Boxster does and wondered if it was anything to do with a sticky lifter?

[Escy]

https://youtu.be/aF-zkizY-O8

This is mine. It's low on compression on cylinder 2. Had been sitting a year, apparently when it was started this is how it sounded.

[LeighB]

Yours sounds a little more aggressive and can't remember if his had any low comp readings but did note slight bore scoring but wouldn't' know if that was related or not. The noise is on the RH bank and he's kinda thinking the worse case with a rebuild prior to anything drastic happening.

But, if there is a bit more knowledge to be learned then would love to pass on some good news.

[CarreraLightweightRacing]

Escy said:

I bet your heart sank when that happened.

Tell me more about the job as I think i've got similar on my Boxster. What was it doing? Are the timing tools necessary if you don't remove the chain on the cams? I know the crank can be locked with a drill bit.

Here is a cut and paste from another thread where I documented the job in more detail
I also think I may have added a video there. Tools are necessary but only around £120. There is no need to remove the cams from the variocam solenoid assembly but you need the tools to secure the cams when you remove the head cover...:

All the parts arrived today so the afternoon was spent replacing the tappets on cylinders 1-3. So incase you ever need to do this job here is a little guide on Tappet (hydraulic lifter replacement):

Here are the parts and tools I ordered:


If the engine is installed then you need to strip away exhaust, manifold, brackets, coil packs... to gain access and clean away any debris/oil stains...:


You'll then need to drain the engine oil then pull out these plug so that you can set TDC on the bank you are working on:


You'll need to look in this hole to check the bank you are working on is at TDC:
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Lock in TDC:


Fit this special tool into end of camshafts:

Disconnect cam solenoid plug and the cover 2xbolts:


Undo oil pump 4x10mm bolts:


Undo head cover 23x bolts and prise open:



Then remove cover:


Here is how it looks inside:


Fit cam special cam support tool:


Remove tensioner:


Remove oil pump:


Unbolt the chain sprocket but ensure you tie wrap in place to keep the timing:


Unbolt variocam solenoid 3xbolts then remove securing tools and drop out complete cams with vario cam assembly:


Here are the tappets:


Pull them out and jobs a goodun

[Escy]

Thank you for that. It doesn't look too bad. It's nice to see the timing tools being used to get a good understanding.

[Pope]

While the cams are out I would be replacing the variocam tensioner chain guides; they are known to wear quite considerably - and you want to hope on only having to have it apart once!