Installing the exhaust cam with multiple lobes. 2.0T CAEB EA888 engine

[NitroViper]

2.0T CAEB EA888 engine

I am about done putting my motor together and never have dealt with this type of cam before with multiple cam profiles. I never realized that these lobes slid back and forth according to RPM's it seems weird to me... anyways... I put the cam cover/valve cover on and had to move the cam lobes by hand to get the lid on. Little did I know they needed to be in a certain spot. I guess its because Im just used to throwing a cam in and not think about the lobes being able to move lol. I turned the motor over by hand and heard a clank noise and wasnt sure what it was because the wrong lobes were probably in the wrong position. Dunno what that clanking sound was but probably the lobe slipping off the rocker, im not sure. So after crapping my pants I took the cam cover back off and looked at it, everything seemed normal.

The manual says to use spacer tools but I dont have those.. I says nothing about doing it without them. So my question is do I just move the lobes so that the full lobe hits to rockers or the half lobes, or is it a mixture? I have searched for hours for a DIY or youtube videos but there is absolutely no info anywhere. So if anyone has a DIY or some info it would be great I wanna have this done by tomorrow!

[Smac770]

The variable valve lift system (AVS aka AVL) on the exhaust cam in the EA888 Gen2 longitudinal motor is discussed on pages 10-19 of SSP 436 (easily found via google search). Of particular note to you would be page 13. There you will see how the lobe is slid back and forth on the cam via the two pins, with the head cover integrated bearing serving as the slide limiter and the spring loaded ball as a retainer.

Did you get the spacers tool? You'll need two of them because Audi is a tool. https://audi.snapon.com/SpecialTools...temId=17870123 You're supposed to use a /2 on the cog end of the cam and then /1 between each sliding lobe, and then a fourth /1 (thus why you need two) on the end of the last lobe.

But then you need the drifts tool (https://audi.snapon.com/SpecialTools...temId=17860123) to slide the lobes into the proper startup location. Why not just put them into the correct location with the spacers? I don't know. Is there some need to do the transition after the cover is on? Looking at the pic of the post installation drifts positions, 1, 4, 5, 8, it would seem 1 and 3 are sliding the lobes one way and 2 and 4 the other way. Seems odd.

My suspicion is the spacers set them where there won't be conflict with the rockers, and then the drifts are used to push them into position over the rockers?

It's $43 in tools to do it right. Might even find it cheaper on the net, or maybe someone who has them and no longer needs them would unload them.

[NitroViper]

It's $43 in tools to do it right. Might even find it cheaper on the net, or maybe someone who has them and no longer needs them would unload them.

That sounds complicated, over complicated lol.

I see these on amazon https://www.amazon.com/Elf-Bee-Camsh...4691438&sr=8-1
This issue with those is u have to remove them to put the top on, so why couldn't you just position them first without the tool if you had a picture or something to go by. I can order them but I really want this done tomorrow. Not looking to promising I guess.

[NitroViper]

My manual doesnt say anything about Camshaft Pins, I have some tho I think in the timing chain kit I bought.
My service manual says line up the tools and put the camshaft lid on.

[Smac770]

Use of T40196 comes before the timing and head covers come off and after the head and timing covers go back on. The spacers are used to place the cam into the head, then cover goes back on, then set all ththen the drifts are installed in the correct holes and the crank manually turned over four times. So at your position, the drifts would not be relevant. But they are involved in putting everything where it belongs before you start cranking the engine.

If you don't have the spacers, maybe someone who does have them can provide you the widths so you can try and eyeball the correct positioning for laying it into the head.
https://www.youbeli.com/vw2c-audi-en...p-2533136.html pic of them in place as a reference But I don't have them so can't tell you their actual width.

[NitroViper]

I ordered the red spacers on amazon, 2 day shipping. Thats just going to kill my planning of having my car running by wednesday.

I appreciate the help, I seriously have been looking for ANY diy, or youtube vids or even pictures... I am wondering how there is none. There is videos on everything these days lol.

[NitroViper]

No one has done this without those red spacer tools? Or has the measurement for them so I can make my own? I ordered them but id like this get this done asap!

The manual doesnt say which go where either which is weird.

[Smac770]

The pic you posted has that, /2 goes at the front, /1 goes in the other four spots.

[Theiceman]

you may find this helpful

https://www.audizine.com/forum/showt...di-Tool-T40196

[NitroViper]

you may find this helpful

https://www.audizine.com/forum/showt...di-Tool-T40196

Yea I read that post. Right now I have all the cam sections sitting on the small lobes. I can put the cover on and time it again.
Do you guys know if you should start timing the cam on the small lobes or large lobes? My understanding with engines is the smaller lobes are for lower RPM's so Im guessing thats what I should time it on.
That clanking sound was one of the cam sections being only half way on a lobe, Im almost sure of it. I put air in every cylinder and no valves were bent.
What is wierd is the audi mechanic said it doesnt matter which lobes. He also said I dont need to use those pins in the solenoids either after timing it even tho the manual says to do it and turn the engine over 4 times... Im gunna do that step anyways.

I called the Audi shop today and all the red things are for is so that you can get the cover on.

[Smac770]

Well, we know that arrangement can't be right, as there's no gap between the cyl 4 lobe (center) and cyl 3 lobe. Doesn't match what using the spacers would accomplish. The gap between the cyl 4 lobe and the flange piece to the vacuum pump looks much larger than what a /1 looks like it might be. If you slide the cyl 4 lobe right to the other detent, can you set that same new spacing (between 4 and end) between all four lobes?

Never having had one in hand, are the high profile lobes not on the same end for all four cylinders? It appears the high lift lobes are the forward ones on the cyl 4 lobe, but are the rearward ones on the cyl 3 lobe? Guess that would explain the different placement of the drifts (front vs rear) on each cylinder to set it to the same profile.

[NitroViper]

im just gunna install it the way I have it tomorrow, time it, do the pin thing with 4 revolutions of the engine and see what happens I guess. If nothing binds up the worse that can happen is it runs like crap

[Theiceman]

The mechanic is correct. The cam on where it sits in corelation to the other cam and crank has zero to do with what lobe it is sitting on.
Btw i didnt use the pins either but the thread indicates where they are supposed to be.
You are over thinking this.


Sent from my SM-G973W using Audizine mobile app

[NitroViper]

The mechanic is correct. The cam on where it sits in corelation to the other cam and crank has zero to do with what lobe it is sitting on.
Btw i didnt use the pins either but the thread indicates where they are supposed to be.
You are over thinking this.


Sent from my SM-G973W using Audizine mobile app

I for sure am overthinking it. Im going to install it the way it is tomorrow and do the pins with 4 revolutions. Im 100% sure I had one of those slid off center and one of those double lobes were both hitting the rocker wheel at once causing it to make a loud clank.

[Theiceman]

You may havs trouble seating the pins if the cam lobes are not lined up initially.
Dont force it if this is the case .


Sent from my SM-G973W using Audizine mobile app

[liamduong]

Here are measurements I got when I took off the cover off of my 2014 Audi Allroad 2.0 Quattro. DB200B40-5BF8-41CE-B439-0C159D734B3B.jpg91F93AAA-74C1-4018-B4BB-2166D8CB89E0.jpgE235F0A8-A097-49DF-AFFA-566863F2DA27.jpg066F982D-A828-4E56-8F33-7D9DE5281FFA.jpg210C8D90-763A-4CE8-8B9C-689C61BBD826.jpg

[Allowencer]

I never paid attention to the spacing of the lobe pairs. I ensured they were seated in their ball bearing positions on the lower life sets. Installed the cam and then used the tools in the actuator bungs, in the orientation the manual says and rotated the engine over 4 times with those. You can then flip the tools to the other holes to ensure the cam lobe pairs move properly, but then shift them back.

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[Chillaxin]

https://youtu.be/k2e_3yqmvYY