S60 vvt

[Bigsi15]

Hi guys
I have a 02 s60 t5 with I believe vvt on one cam.

Following another of my posts on poor compression I want to remove the cylinder head to see what it looks like inside. Of course this means splitting the cylinder head so the cams are loose and I am a little concerned about the VVT aspects.

Bit of a silly question perhaps but if I'm not going to remove the VVT system from the camshaft can I just literally remove the timing belt and lift the whole system out as one and then on reassembly lay it all back in the cylinder head so the timing marks line up without any further adjustments or will I have to set up the VVT as well anyway separately?

Thanks in advance

[Harvey]

the only problem to remove it as one would be the camshaft seal as it sits in cam cover and head ,half & half.

[Kingsford G]

Before u do that check the compression again and then put some oil in the bores and check again,if it goes up then rings is the problem if not leaky valves.At least u`ll know what parts will be needed.

[Bigsi15]

Thanks guys, balls yes forgot about that seal, might just have to do it properly then, I did put some oil then but only improved the compression by about 20 at best so I don't know if that is good or bad?

[Bigsi15]

Thinking about it would the seal slip on from the other non-geared end of the camshafts all the way up to the VVT housing? If I'm going to remove the cylinder head anyway I might get away with that if it fits over the cams…

[Kingsford G]

Your piston rings clogged up or worn so consider they need changing also do all the valve facing.Mixing oils when topping up cheap oil filters and late services do that.

[Kingsford G]

By the way BG engine flush is worth trying.I`ve tested it on my wifes car with the BG rep and it lined up the compression to 13Bar all across +- 0.1 the biggest increase is about 1Bar and thats on a healthy engineand running it about 10min,in yr case I`d run it 30-40min and do oil change and check again.BG claims its the best product that removes deposits from piston ring groves.

[Bigsi15]

Thanks kingsford, what you're saying is definitely plausible, there is quite a lot of crap generally in that engine I think so it could've stuck some rings. I'm not a massive fan of engine flushes just because I've read some bad things about dislodging bits and causing more problems especially with a turbo but it sounds like your experience was good so might be worth a go especially if I pull the head as well so can clean up any big deposits anyway

[Dream3r]

ECM would go crazy unless prorammed

[Bigsi15]

Sorry dream3r I'm not sure what your reference to the ecm relates to?

[Dream3r]

well it thinks it has VVT due to it's SW config, removing it correctly you'd need to remove the VVT settings in the SW on the ECM also. That is assuming you'r removing the VVT and I didn't misread your post lol

[Bigsi15]

Ah okay I think I've got you now! LOL! I am potentially looking at removing the VVT but only temporarily in order to do repair not as a permanent fixture like the older 850 engines, I didn't think there was any issue disassembling the Vvt so long as it is put back and set up correctly to avoid the check engine light with incorrect timing?

[Dream3r]

Ah okay I think I've got you now! LOL! I am potentially looking at removing the VVT but only temporarily in order to do repair not as a permanent fixture like the older 850 engines, I didn't think there was any issue disassembling the Vvt so long as it is put back and set up correctly to avoid the check engine light with incorrect timing?

No issue, but consider a new solenoid if it's done a few miles, vida will show you the timing adaption so you know you've done it right. That and it starts lol.

[Dream3r]

oh I think you'll need to buy or make a tool to time it up right.


edit which cylinders are down iirc 0 is at the belt end

[Bigsi15]

Ok thanks for your reply, I don't suppose you have a copy of vida or that section with the timing to hand do you?!

Thanks again

[Dream3r]

Ok thanks for your reply, I don't suppose you have a copy of vida or that section with the timing to hand do you?!

Thanks again

I don't mate sorry, someone will chip in hopefully. My VIDA sub was cancelled last year.

[Bigsi15]

So cylinder head removal began today, hopefully this is going to be worth it I guess if not is interesting and a good experience! I will try and take some pictures as I go. Already run into one or two problems namely getting bolts out being really difficult and one broke, it's the little sprung bolt on the back left of the engine as you look in from the engine bay which I think hold on the heat shield for the turbo. Pita especially on this car, my 850 was bad enough and bent nearly breaking but It didn't have a pipe in the way! Any ideas if this bolt is especially important?!

[Bigsi15]

Another quick question, on the cylinder head itself around each spark plug hole there are 4 torx bolts. Any idea what these are? My 850 doesn't have them and at what stage do these get removed when trying to take the head off? Thanks very much

[Bigsi15]

So big problem today... Rounded head bolt was doing it very carefully with new sockets but it's knackered. Anyone got any tips baring in mind it's all still in the car. Looking into specialist sockets but a lot won't fit into the bloody hole above the bolt

Thanks guys

[Bigsi15]

Right sorry for the long delay! Been delayed through that bolt (removed with a special socket) work and Volvo only sending me 10 head bolts! All back together now and to my surprise started immediately! However with a check engine light. Figured probably the vvt on the exhaust not quite right so got the code read and apparently it is 463a camshaft sensor signal exhaust. Can't find much to this on google and seems is missing a bit (most codes I find have either low or high at the end?)

Anyone shed any light on this?

Thanks!