Putting My 996 Porsche Carrera’s Engine Back In Time!

[@Mckorzi]

Excellent Video. I learned a lot 👍 many thanks 🙏

[@FunAhead_TV_Official]

Love to hear it! Thank you for watching

[@JustinBekkerCanada]

I have mine opened up right now and one thing that I haven't seen mentioned anywhere is that the chain from the IMS to the exhaust cam can easily skip teeth at the IMS. Perhaps this is obvious, but I was under the impression that it would stay on the correct teeth. As I was trying to set the time it seemed like it was too far out, so I took the sprocket bolts out again and sure enough, by giving a little slack in that chain I could skip teeth. Seeing that makes me realize the importance of having tension on the chains when doing things like IMS bearing replacements.

[@FunAhead_TV_Official]

Great call! You're right on though... You definitely need to be very careful of that, especially when the cam sprockets are still in place, but the tensioners are out.. Try not to rotate the engine at all during that time! Good luck with getting the rest of it back together. If you hit any roadblocks, I'm here if you want to talk it out.

[@FreePalestine1173]

This is by far the best video I’ve seen of how to time it properly. I just wish you gave some more info for bank two, as you need to turn the crank a couple times in order to begin the process of timing it. Thanks a bunch for your hard work tho.

[@FunAhead_TV_Official]

Thank you, I appreciate it! Yeaa, admittedly, I realize I definitely should have done a better job communicating how to do that. The info i said is everything you need to know, but I needed to not gloss over it so quickly. Pay attention to what I said about where the cams need to be pointing when working on each bank. They’re only 360deg of the crank apart from each other, and the process is the same on each bank. Outside of that, let me know if you have any specific questions and I’ll do my best to answer in comment form haha

[@walsher01]

Can you please provide instructions on how to make sure bank 1 and then bank 2 are in proper position. I am preparing to replace the guides this week and the statement about bank 2 made me curious and want to make sure I do them correctly.

[@mercar525]

Super. Thank you very much.

[@FunAhead_TV_Official]

You’re welcome. Thanks for watching!

[@ChrisMcPorsche]

When you rotated to the crankshaft TDC, did you have to go around almost 2 rotations?

[@FunAhead_TV_Official]

Not sure I understand what you’re asking. Basically, yes, it’s 2 full rotations of the crank to fully rotate the engine. Crank has TDC every 360deg, but valvetrain is 720. Then, each bank of cams has it’s own respective TDC position that are 360deg from each other.

[@danpliss]

@@FunAhead_TV_Official I think I get what Chris was asking. you started out @ 0T TDC. after you installed cams, you went to UT Valvetrain TDC. So, you would have had to rotate 2 full rotations to get to UT. correct?

[@je753]

Hi David and great video! I'm doing this same job and have a question about bank 1-3 timing. When you go from 6# to 1 Ot on crank, it's only to get away from chain slack right? If you later on rotate engine and check the timing , the cam rotor faces out and exhaust cam is flush with head cover when crank is 1 Ot? (Of course the cams are timed together with links/marks when assembled first) Thanks in advance! 🇸🇪🇺🇲

[@FunAhead_TV_Official]

Hey! Apologies for my slow response time. Yes, the intention of doing that 6 to OT movement is to take out any possible slack. Finally, you time each cylinder bank to The OT mark. Hopefully that helps. Good luck with the rest of your build, and let me know if you have any more questions along the way, I’ll do my best to answer!

[@je753]

Thanks, fast answer if you ask me! Timing bank 1-3 is done. Now I just turn 360° to OT again and assambly cams on bank 2 with cam rotor pointing down/in if I am right?😊

[@FunAhead_TV_Official]

That’s correct!!

[@gerglmuff]

ive done this 6 or 8 times now, and my motor doesnt spin over. i didnt take anything out of hte block, and my cam lobes, rotors etc, are all facing the same way. it doesnt spin. spins without the cams attached, and cams spin in the heads just fine when not attached. timing is fucked, i have no idea where though.

[@FunAhead_TV_Official]

Does the crank spin after you’ve installed / timed the first of the 2 banks when you need to go from one bank’s TDC to the next?

[@gerglmuff]

@@FunAhead_TV_Official no, the first bank is all thats done, the head isnt even on the other side.

[@FunAhead_TV_Official]

@ Ah! Make sure the primary chain for the opposite bank is fully extended and taught. They get bound up super easily on the sprocket and could easily make it impossible to turn the crank.

[@FunAhead_TV_Official]

That’s one of the main reasons why I prefer to do this job on an engine stand. The bank I’m not working on hangs so the chain does not get bound up.

[@gerglmuff]

@@FunAhead_TV_Official i found that problem yesterday. so that wasnt my issue. honestly, im not sure what the issue was, because i did it one final time, i spun the cams to prove to myself that they spin without the lifters in so the valves werent moving. and then i put everything back together. didnt find anythin wrong, nor did i clean anything special, just kept enough assembly lube on it to make it work, and it worked. i think maybe something in a chain guide, maybe a link was on an edge or something? idk. the cam phasor chain guides and whole thing sure seems pretty sketch to me in these cars lol. it works now. cant really tell you why lol. thanks for the videos and help, really helped me out, even if i cant give you a smoking gun.

[@HelpMeDIY]

Hey BTW, where are you located? I'm in Greensboro NC. Nice to have some more detailed Porsche content out there!

[@FunAhead_TV_Official]

Cool, that’s a nice area. I’m in Columbus, Ohio.

[@HelpMeDIY]

@@FunAhead_TV_Official Alright your video was a big help! After finishing the job now I have one point for you... you and I both incorrectly released the tension in the variocam BEFORE reinstalling the cams. I don't know if you noticed, but I did, that the gears of the cams touch the side of the variocam when you do this. Following the service manual, you should install the cams back into the engine first and THEN release the tension after the cams are bolted back into place. This will make sure that the sprockets don't touch the variocam at any point :)

[@FunAhead_TV_Official]

Good eye! Yes, I did realize that, but only after realizing my mistake on bank 1. Unfortunately, for me, my cheap variocam compression tool stripped out on me as I was working on bank 2, so I used it only to the point of getting the solenoid back in between the chain and had to remove it because it had failed. Fortunately, even still, I was able to reinstall everything on both banks without damaging the sprockets or the solenoids!

[@RidicULooseAutomotive]

Hey man, I'm gonna be doing a similar bit of work to my 996.2 watched all the vids super awesome detail in the process. I'm curious where you got the timing tool kit from?

[@FunAhead_TV_Official]

Hey, thanks for the compliment! So, funny you ask… it used to be available on Ebay, which is where I got it from… however, it seems that the seller no longer has it available. Several people have now asked me about that and I honestly don’t know where to get the kit I have, aside from buying the actual one from Porsche. Sorry man, good luck, but keep me posted if you end up finding it.

[@RidicULooseAutomotive]

@fun_ahead_tv well I appreciate the reply man. I'll try to scour the webs a little more. I think I found the old ebay listing but no stock lol. Hope the car is still treating you well!!

[@michaeljohncox3898]

Really great video. I feel like I could do this with the time and tools someday. How much were the special tools?

[@FunAhead_TV_Official]

Hey Michael. Thanks for the kind words! I picked up an entire kit on ebay for about $135. It included each of the special tools. I was a little skeptical of the quality, given they're knock off tools, but I know other people have successfully reassembled Porsche engines with the kit, now myself included haha. Worth it, considering the actual Porsche tools cost 10x that. I'll throw a link in the description to the kit I used.

[@Mike_Regan_Fabricator]

I’m curious if you had any other warnings of pad wear other than parts in the oil? I am trying to diagnose a problem on my 99C4. First start of every day I get a chain rattle that sounds like it is coming from bank one, all other starts throughout the day are fine. I replaced the lower chain tensioner because it’s cheap and easy but it did not solve the problem.

[@FunAhead_TV_Official]

Hey Mike! Sorry for the slow response. Actually, no, I had no other signs that anything was wrong. Since your rattle is still there, it might be worth replacing the other 2 chain tensioners. It’s always hard to pinpoint a sound like that, so it’s possible that it could be coming from elsewhere on the engine. Just a thought

[@HelpMeDIY]

Hey Mike... just replaced the chain guides on my buddy's car (and made a video). His warning was using a Durametric his cam deviations for bank 1 was -8.4, where the spec is between +6 and -6. After replacing them the deviation was around -4.9

[@nathandan7079]

Great video fyi the variocam body also need to be disassembled to replace two green O rings that maintain the pressure and seal the unit internally

[@fakeaccount4092]

Thank you

[@FunAhead_TV_Official]

You're welcome!

[@gerglmuff]

i dont see video two on your channel.

[@FunAhead_TV_Official]

Finishing Up Engine Out Services on my 996! kzbin.info/www/bejne/pWO2k3uCaquno6M

[@FunAhead_TV_Official]

That’s the next video in the series

[@gerglmuff]

@@FunAhead_TV_Official that doesnt have timing bank 2 in it.

[@FunAhead_TV_Official]

That's an older video and , admittedly, I don't love the way I explained it there... This video explains it better: kzbin.info/www/bejne/Y5zUqqtnaZtjZ6ssi=fN4sAXfKOw4vU4Uo To elaborate on this, once you complete the timing of one of the banks, the crank then needs to be turned 360deg to put it into the opposite bank's top dead center position, then the next bank can be timed... In actuality, you can turn the crank clockwise 300deg from the OT position (where the crank is located when you complete timing of the first bank) to the U6 position, which is where it will need to be to start the timing procedure of the opposite cylinder bank. As a double check to make sure you have the cams in the correct orientation, the cam position tabs on the intake camshafts of each bank should ALWAYS be facing the same direction, relative to the crank when the crank is at OT... either both IN or both OUT. If one is IN and the other is OUT then you've got a bank 360deg out relative to the crank. Hopefully that helps!!