HPL Piston Photo
- Thread starter buster
- Start date
I am quite certain we have seen HPL cleaning the ring area of the pistons in the Durango, as we have seen many filters with hard carbon collected from somewhere inside the engine. Same with the Charger, just not to the degree that we have seen from the Durango. The Charger only had 55,000 miles when I started using HPL, while the Durango had 110,000 miles.
Can you remove the rings from the piston and take a couple pictures of the ring grooves?
How many total miles on this piston?
Can you remove the rings from the piston and take a couple pictures of the ring grooves?
How many total miles on this piston?
Will do in an hour or two. This is 242,000 mile piston
Out of a completely stock (and mostly gently driven unless I get my hands on it) 2002 Subaru WRX with 242,000 miles.
The engine is being rebuilt because it burned an exhaust valve due to oil consumption from (I believe) the intake valve stem seals.
I saw inside this engine (somewhat) when I first met it at 174,000 miles when it burned a different exhaust valve due to (at the time unknown) oil consumption and a leaky fuel injector on a different cylinder leaning out all the others (only 1 bank fuel adjustment for all cylinders) for AFR.
Driver had always had oil changed every 3,000 miles so it was a couple quarts low every oil change until I entered its life. Driver is now my fiance, I've kept very close tabs on oil level and other aspects of car from 174,000-242,000 current.
Engine had been unopened or touched besides routine maintenance until 174k.
Every filter change from about 180-242k. It has had very fine hard carbon in every filter so far
Glad you looked, it confirms HPL was cleaning.
Impressive. For all the potential downsides and haters of the boxer engine, this piston looks pretty great.
I agree entirely. This engine has been run low on oil several times before I met it, even enough to make the light flicker for about 10 miles straight. 2psi oil pressure for the light and it runs with ~80 psi. It has the original turbo still and no visible leaks or excess bearing movement. Lead and copper had been trending up and the upper rod bearing shells all uniformly worn a bit down to the copper. The main bearings look new. Engine is getting a refresh and back on the road for the long haul. It's a rust free and actually very well used car
It's always nice to read these things in context, so before it's lost to time, here's the OP, where anyone can read a little more from where this was originally posted, although there are more details here.
Car is originally from Oregon. We met in NY when it burnt the first valve and I undercoated it with fluid film before it saw salt. It has had several reapplications of fluid film, still no rust and moving back to OR.
Good thing you applied fluid film. New York has some extremely corrosive road salt. I researched the NYSDOT regarding what type they use. 3 different types. All controlled by temperature. The lower the temperature, the more additives used to plain rock salt to prevent re-freezing ( brine and some other types sprayed during salt process ) Will eat an underbody in a few years. NYSDOT does not care about YOU'RE corrosion problem. Asphalt stays white most of the winter. Eats the asphalt too. Pistons look great for 242K !
R&P would take that hard carbon off.
Fluid film and other soft type self healing undercoating has allowed our vehicles to survive more than 8-10 years here. It pays for itself and then some. This needs to become common knowledge to the automotive world. Our roads have so much salt that you really cant make out the white paint lines in winter when the roads dry. Add in dirt roads, salt brine being applied to dusty dirt roads to keep dust down, and you're up against year round corrosion. The salt doesnt even leave undercarriage cavities in vehicles in the summer months.
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