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S40 T5 engine question

  #1  
Old 01-05-2019, 12:19 PM
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Default S40 T5 engine question




Hello everyone,

I am working on my $250.00 find, car was not maintained well be ran well. As I went threw it, I replaced T stat, replaced oil trap and filter, filter was collapsed. So I removed the top end to replace timing belt and other items involved. Because of the condition of the oil filter, I want to drop the pan and clean it out and replace with new o-rings in there. What do you think about me replacing the Piston rings, rod and main bearings? the car was NOT knocking or smoking. Has 112,000 miles on the engine now?

Thanks
 

Last edited by usmarine0905; 01-05-2019 at 12:34 PM. Reason: Updating
  #2  
Old 01-05-2019, 12:31 PM
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when you say you removed the top end, are you saying you have pulled the head off already? Did you do a compression test before opening up the engine or have any signs of oil burning to suspect bad rings? I suppose you can pop off the rod caps to inspect the bearings and was asking about the head being off where you can see if there's any wall damage. Dropping the pan is a good idea as you can check for any sludge or metal debris before deciding to rebuild the lower half. When you noted the filter was collapsed - were you talking about the oil filter? I'd suspect that somebody just put the new one in wrong and just tightened the cap to crush it. If there's no sludge or debris in the pan, then I'd doubt you have any ring or bearing damage.
 
  #3  
Old 01-05-2019, 12:36 PM
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@ mt6127 Yes the head is pulled, and the oil filter is what I was talking about. compression was very good, car was running very well when I got it started
 
  #4  
Old 01-06-2019, 11:46 AM
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Sorry for the misread - I saw the post on my phone and didn't see you posted the pics until I was viewing on my PC. Since the head is off, you can inspect the cylinder walls for any scoring. I did a similar job years ago on a BMW 2002 (my second favorite car of all time behind my Audi 4000 Quattro) - I pulled the head, dropped the oil pan, inspected the rod bearings, pushed the pistons out and rehoned the walls (Harbor Freight etc sells tools that fit drills) to deglaze, measured / fitted new rings etc. Since my rod bearings looked perfect, I just left the crank in place. If your cylinders look good, I'd probably leave as is and just drop the pan to clean any debris and sludge, clean the PCV ports, replace those parts (about $125 for the kit - check out tascaparts.com for the best dealer prices) as part of the rebuild. With the pan off you can also redo the gasket and o-rings around the oil pump and you should be good for a long, long time.
 
  #5  
Old 01-06-2019, 07:00 PM
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@mt6127 thank you for the advise. I will deglaze the cylinder walls and inspect the rod bearings. if bearings are good I will assemble and clean out the pan and replaced the o-rings with the kit I have. Thank you again in advance... As for the PCV , I have gutted the oil trap of the sludge and cleaned all oil passages already, what a mess it was....
 
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