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Discussion Starter · #1 ·
Hello,

Does anyone have experience with a 2007 V70R with hydrophilic lifter noise and the replacement of these lifters? My local Volvo and European car shops all sound hesitant to do the work. I was quoted to replace the head, which seems drastic for a sticky lifter...

I watched a video on YouTube and it doesn't look like a whole head is needed... Do the channels the lifters sit in get out of round, varnished etc, or is someone trying to get their kids into a better university?

The onset of this issue is believed to be around the time there was a cooling system failure and the engine got quite hot. No issues related to warping of the head have been spotted and it has been a few years since that incident.
 

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The R has solid lifters. Are you sure that you're not hearing the ticking of the injectors and/or a leaking exhaust gasket (especially if the noise decreases or goes away entirely once the car is at full operating temperature)?

Do you have to top up the coolant on a regular basis? I would be very suspicious of a cracked sleeve and/or warped block based on your report of a cooling system failure.
 

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Discussion Starter · #3 ·
It is oil thirsty, in my opinion (one top up between oil changes), but not coolant thirsty (don't need to top it up). There is no foam on the oil during oil changes. No sweet exhaust smell. I have not done a compression test or put a scope inside to see if it is steam cleaned but it gets a clean bill of health with every mechanical for the past three years. Nothing was mentioned when we had the plugs changed a year ago either.

Odd about the lifters... The dealership, a Volvo only private service shop, and two European car specialist shops all said it was hydraulic lifter noise... I have no faith in any trades these days, so this could be another job I have to do myself... No wonder they were all hesitant to do any work. They don't know what they are working on...

So, if there are no hydraulic lifters, is this just a matter of measuring clearances and getting an appropriate bucket / spacer?

The engine clacks, like taping a light sheet metal hammer on sheet-metal on an anvil. Very similar to our VW flat four. It will get worse as it gets closer to oil change time. It only lasts a few seconds on a first start. By the time the cold-start idle control drops the RPM the noise is gone. You can hear it now and again when driving if you are quick on the throttle and producing some torque. You can hear the clacking for a split second in these circumstances.
 

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Discussion Starter · #4 ·
I saw a post on methews site referring to tappets for the Volvo B5244T2 engine. They linked to volvopartswebstore. I went there and searched 2007 V70 2.5L 5 Cylinder Turbo. There, as clear as day, is the diagram with tappets and valve springs as soupandspoons said.

What is the technical model number for these engines in North America? Was the R the only 2.5L Turbo or is there a non 'R' model in 2007? I get confused as some parts searches seem to offer different menu options.

With this bombshell, I assume the next step is getting in there with a feeler gauge and measuring valve clearances. I don't see a reference to clearances in the tech sticky here. Does anybody know the valve clearances?
 

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That could be cam phaser noise. Tappet noise would be louder cold and decrease when engine warms up and expansion of metal decreases the clearance.
Oil consumption of one quart in 5000 miles is normal and nowhere near excessive. What is your oil change interval? All piston engines use oil. The valve guides weep oil and some oil is left on cylinder walls. Some fuel is scraped by rings into oil when started and run cold. When the loss of oil equals oil contaminant gain then you have no change on dipstick. The darkening color of oil as milage accrues is the sign of contaminant gain. Most R engines use oil at a low rate, one quart in 3500 miles more or less.
 

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Discussion Starter · #6 ·
Oil is changed every 7,000 Km which is 4.35 Miles. It will need a full quart before the oil change and some times it needs a quart and a top up before the oil change. This is thirsty compared to most other cars we have had. Sure all engines use oil, and some engines are tighter than others, but it sounds like this is within the norm for this engine.

The noise only lasts the few seconds before the cold-start disengages. I will get in there and listen to the header and the cams.

Thank you!
 
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