IPD sale Volvo Parts
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

Cam bearing wear, would you reassemble?

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

highmiles
Posts: 28
Joined: Tue Dec 11, 2018 11:09 am
Year and Model: 2003 S60
Location: NC
Has thanked: 1 time
Been thanked: 0
United States of America
highmiles

Cam bearing wear, would you reassemble?

Post by highmiles » Sun Apr 28, 2019 12:01 pm

In the process of rebuilding a 2003 S60 2.4t motor that died from oil starvation and spun crank bearings at the hands of the PO. I am assembling the head now and have discovered some wear at two cam bearing locations. I would describe them as #3 and #6 on the intake cam. Photos attached of head and cam cover. I have cleaned these up as best I can. There is not any damage to the cam.
Would you carry on an reassemble as is? I am not looking trying to go another 100,000 miles.
If not, my next move would be to pull a head off a junkyard car if available.
Thanks,
John
Attachments
IMG_1856.JPG
IMG_1855.JPG
IMG_1854.JPG
IMG_1853.JPG



kallekula
Posts: 311
Joined: Sun Mar 02, 2014 12:34 pm
Year and Model: S70 2000
Location: Orange County, CA
Has thanked: 6 times
Been thanked: 2 times
United States of America
kallekula

Re: Cam bearing wear, would you reassemble?

Post by kallekula » Mon Apr 29, 2019 12:28 pm

Im no expert in engine rebuilding but I would have tossed that head and gotten another one from the junkyard, they’re pretty cheap.


S70 2000 Base
V70 XC AWD 2001
V70 2001 N/A *SOLD*
S40 2005 2.4i *RIP*
XC90 2005 2.5T FWD *SOLD*
S70 1999 T5 *SOLD*
BMW 540i 2002

veektor
Posts: 88
Joined: Tue Feb 06, 2018 11:48 am
Year and Model: 2008 S60
Location: Kansas City
Has thanked: 3 times
Been thanked: 2 times
United States of America
veektor

Re: Cam bearing wear, would you reassemble?

Post by veektor » Mon Apr 29, 2019 1:19 pm

I had considered replacing rod bearings on my '08 S60, which also had spun a bearing due to sludging. When I took the engine apart I noticed that all main bearings looked pitted. I decided that it would be cheaper to pull an engine at Pick-n-Pull than to buy all the required bearings. Tossed the old engine, and the new one from '06 XC70 seems to be purring quite happily so far, 2000 miles into it. If you are not looking to get another 100K miles anyway, then take the easy route, don't put any more good parts into the abused engine.



highmiles
Posts: 28
Joined: Tue Dec 11, 2018 11:09 am
Year and Model: 2003 S60
Location: NC
Has thanked: 1 time
Been thanked: 0
United States of America
highmiles

Re: Cam bearing wear, would you reassemble?

Post by highmiles » Mon Apr 29, 2019 1:33 pm

Thanks, good points all around.

In hindsight the engine swap would have been the right (well, more economical) choice. Though part of my reasoning was to learn about the engine rebuilding process. I do confess to be being naive about the cost of parts (not to mention the parts that were outright missing...)

I already rebuilt the bottom end with new big end bearings and new rings in the pistons, so I feel good about that assembly. I scouted out the junkyard yesterday and they have two cars with the B5244T3 motor, so I plan to go next weekend to pull a head. I don't think I will even disassemble it to lap valves and put in new valve seals, just clean up the mating surfaces and roll with it.



User avatar
RickHaleParker
Posts: 2736
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 303 times
United States of America
RickHaleParker

Re: Cam bearing wear, would you reassemble?

Post by RickHaleParker » Mon Apr 29, 2019 1:53 pm

highmiles wrote:
Mon Apr 29, 2019 1:33 pm
I plan to go next weekend to pull a head.
Make sure you get the Cam Cover that is on the junkyard head. The two where matched at the factory. Don't get the two Cam Covers mixed up, mark one of them with a paint stick.


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

highmiles
Posts: 28
Joined: Tue Dec 11, 2018 11:09 am
Year and Model: 2003 S60
Location: NC
Has thanked: 1 time
Been thanked: 0
United States of America
highmiles

Re: Cam bearing wear, would you reassemble?

Post by highmiles » Mon Apr 29, 2019 2:08 pm

...and that right there could be the reason why I have the current condition of the head... I didn't want to complicate the question with more details than necessary... But one of the parts that was missing from the project (it came to me disassembled) was the cam cover. So... I pulled one from the junkyard and mated it to the cams and head I had on hand. I had everything reassembled and (after replacing the fuel pump) it fired up and ran fine... briefly, then jumped time. At first I suspected the timing belt tensioner... but perhaps the mis-matched parts did not provide correct journal clearances and the cam actually locked up in the head.
I pulled the head, identified the bent valves and lapped them and swapped those out with good ones from another head, then noticed the damaged bearing surfaces. Plan to proceed with the junkyard plan.

Thanks Rick



User avatar
RickHaleParker
Posts: 2736
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 303 times
United States of America
RickHaleParker

Re: Cam bearing wear, would you reassemble?

Post by RickHaleParker » Mon Apr 29, 2019 2:27 pm

Get the entire upper end. Head, Cam cover, Camshafts .. etc.

Mark or organize the lifters so you can get them back in the same place.
I could be wrong but I think the B5244T3 are solid lifters, the lifters would already be matched to that head and cams.


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

highmiles
Posts: 28
Joined: Tue Dec 11, 2018 11:09 am
Year and Model: 2003 S60
Location: NC
Has thanked: 1 time
Been thanked: 0
United States of America
highmiles

Re: Cam bearing wear, would you reassemble?

Post by highmiles » Mon Apr 29, 2019 2:32 pm

Will do it. And yes, they are solid lifters... as a side note, the disassembled motor came to me with the lifters unmarked. Was a lot of fun trying to read their size, determine the gap and calculate which lifter went where....



User avatar
RickHaleParker
Posts: 2736
Joined: Mon May 25, 2015 2:30 pm
Year and Model: See Signature below.
Location: Kansas
Has thanked: 3 times
Been thanked: 303 times
United States of America
RickHaleParker

Re: Cam bearing wear, would you reassemble?

Post by RickHaleParker » Mon Apr 29, 2019 2:37 pm

highmiles wrote:
Mon Apr 29, 2019 2:32 pm
Was a lot of fun trying to read their size, determine the gap and calculate which lifter went where....
In that case don't deny yourself joy, mix them up. :wink:


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

highmiles
Posts: 28
Joined: Tue Dec 11, 2018 11:09 am
Year and Model: 2003 S60
Location: NC
Has thanked: 1 time
Been thanked: 0
United States of America
highmiles

Re: Cam bearing wear, would you reassemble?

Post by highmiles » Mon Apr 29, 2019 2:40 pm

Hah! I did make this awesome spreadsheet that did the calculations for me... Nah, think I will mark them!



Post Reply