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EJ25 Oil Burning Fix | TIRESIDE In The Shop
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- Опубликовано: 4 дек 2017
- Today Nic is fixing an EJ25 that is burning oil by replacing the rings and getting the pistons knurled to prevent rocking in the cylinder.
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Awesome! That knurling of the pistons is pretty cool idea. We had a 1981 Chevy pickup with 250 inline 6 that burned oil so bad it fouled the plug nearest the firewall. Pull that head off and took to a machine shop where they knurled the valve guides to reduce the internal diameter fit to the valves. Worked like a charm! Never knew they could knurl internally.
Nice job. You work like real mechanic. Not like the RUclips commenters that watch a couple of videos and then think they're an A-tech. If you replaced the pistons you most likely would have had to split the block and bored the cylinders one oversize.
Knurling pistons and valve guides used to be a common practice back in the day. It gets the customer back on the road cheaply for a couple or few more years. Sometimes that's all they need.
Just rebuild the full engine if you have committed this much energy...
Y'all some hard working dudes 💪 that was a huge job great work!
Frickin badass work man. You are extremely knowledgeable, I love the confidence you have in what you are doing. It shows you are experienced and not just demonstrating things to get views.
Ok, I'd like to offer some advice. New parts are very inexpensive. But when you get the piston kit, throw away the rings. The old consumption issue is caused by junk compression rings. Deglaze your cylinder walls and install new pistons with hastings iron rings. That will permanently fix oil consumption problems.
how can i get the iron rings. what do i search for
I think I have a box at home. EJ255??? Hastings 2C5140 they should fin the new aftermarket pistons. They are thicker than Subaru factory.
This is what i need to do for my EJ25D soon... I want to pull the engine, get the heads machined, put some better rings on, maybe new pistons, new seals everywhere, MLS head gaskets etc... rebuild the whole thing
May I suggest.... definitely pistons
@@vermili0n be careful....not too much mill on the heads. It'll offset your intake.
The problem I have is changed the oil every 3500 miles, used synthetic, and mine burned oil after 40,000 miles (H6 engine). Never badly but it does burn. Now has 90,000 and still burns oil. Won't bother to replace the rings as it otherwise runs fine and never had any other problems. Just a problem with the engine no matter how well you take care of it. Nice video.
Just wasn't broken in properly. I rolled over 241K miles and I use zero oil in 5000 mile OCI ('13 3.6R)
@@PolishAlexx No, you were just lucky. Here are plenty of videos of Subarus burning oil as it is a fault in certain engines, particularly the EJ engine made around 2006-2012. Here are a few, the last a class action lawsuit. ruclips.net/video/C6LyZBlM4Qc/видео.html ruclips.net/video/bJSYDBjkJNQ/видео.html ruclips.net/video/5zKc6IAGvPc/видео.html ruclips.net/video/khvZ0U85pgU/видео.html
Interesting that you didn't hone the cylinders!! Also knurling the pistons is only a short term fix. Would have been better to have replaced the pistons. Just my 2 cents from someone who rebuilds V12 aircraft engines🙂
My 08 tribeca is consuming a quart every 500 miles. No smoke or poor performance. Regular oil changes too. Have a bad feeling it’s the piston rings. About to get rid of it before it worsens
How many miles? Thought of just replacing all the pistons and saving it if you can?
Just repair! these are not disposable cars, there are infinitely Rebuildable....
And the "Burning" question is.... What's your oil consumption like now?
I did the head gaskets on a 2009 legacy 2.5l NA. Took 2 weeks of nights working on it. Did not pull the motor. Next project is a 2010 Forester that my brother in law's son ran out of oil. Gonna pull that motor lol.
Amazing work, wasn't aware of that knurling trick, I'd probably get the skirt machined back into tolerance though. Ring gaps are also super important with these, and hypereutectic pistons are unfortunately quite brittle and ring-lands can fail if tune is not perfect. Always maintain tune. How is it running in 2019?
I think is crazy just buy new piston with a file you never can get perfect fit.
Just buy a low mileage JDM import motor, save time and money.
Nice! I had no idea you could pull the EJ25 pistons out without splitting the block. Thanks for this!!
You actually cant split the case until the pistons are out
Even if you could pull the pistons without splitting the block its probably just a better idea to do it. You can get the heads machined, throw some MLS head gaskets on it and clean everything up nice for a rebuild
WoW! Great job! Huge “labor of love”! Who can afford it… Labor alone far outweighs the value of the car! … ATF for assembly? Why not “assembly Lube”? Also, interesting that cylinder was still “round” & not “scored” or damaged, and didn’t require honing? … My 2004 (180k miles) had All these things when replacing failed head gasket, but no excessive oil consumption!
Very nice garage man!!! God I hate subarus tho no idea why I just bought a STI 😢
Well done buddy, very impressed 👍
Did you hone/deglaze the cylinders? How was the result and what was the cost of the knurling (compared to just buying new pistons)?
Thats what id like to know... is it better to have the old pistons knurled or to just buy brand new ones
I agree its like duh
This would take me over a year to do.
How much does it cost to restore cylinder 4. What's the current price for the kind of work you did? Thanks
Good work man! I had no idea worn pistons could be knurled!? 🤔 that's a new one on me ☻ what did it cost roughly for the treatment ?
11green11 I would guess it could be done for 300 or so depending on what quality headgaskets you use
It would be interesting to know how long this took you in real time.
I’m so confused why he didn’t get forged pistons or at least new stock ones.
I needa run a compression test but I'll bet dollars to fried dough circles this is the issue I've been having. Third owner of a 2013 wrx. Bastards.
WOW. Do newer Subaru motors like the FA20DIT and FB20 have this problem too?
This video deserves a lot more likes 👍🏻
OMG bravo! are you a mechanic? i dont know how you remember the parts! Hope i can ask you to do my Subaru Forester 2011. having same problem. yesterday i send it to subaru dealer telling to replace the cylinder block. is that true. the enhine oil drain like crazy. was change last May 27 and drained by July 11. What can you recommend?
Good job dude, I will prob not be going this far without a garage
you are a master!
If an engine has over 100k on it, its best just to do new pistons and bore oversize. Those skirts wear down over time, thinning the metal. I have seen the skirts actually break at the wear spot because of that. I also seen a guy put his engine back together with part of the skirt missing. He convinced himself it was perfectly fine that way. Its yours to do what you want. As far as a garage doing it...never going to happen, ever. I wouldnt want my garage name on a job like that. As an owner, the liability is too much of a risk. Clearly, doing it yourself gives you freedom to choose your own method. A garage cannot do that.
This is exactly what happened to my STI. Same cyclinder, same ring problem same everything!!!!
So sick.. I'm about to build an engine for my STI.. :)
Hey can you please tell me ROUGHLY how much oil that car was consuming? I’m trying to figure out if this is what is happening to my Subaru. It has passed every other test. I go from full to empty oil in 100 miles. STI with perfect compression and leakdown test. Not a drop of oil leaking anywhere. And I don’t really see any smoke. A tiny bit every once in a while.
Here are all the McMaster Carr part numbers I used. 1302N082, 9262K357, 1302N087, 91610A512, 98055A465, 98055A444
Good job! One subaru save! But I have to ask will it be more cost effective just swap the motor
Ng Anson maybe cheaper to get a second hand motor or block, but you could end up with the same problem.
And basically need to do the same amount of work just skip the head removal step.
why do you use ATF? to lube the engine? does ATF cause any problem? if not ATF can i still use a thin layer of engine oil instead
They sell engine assembly lube. It's a light grease. And an old school trick is to pack your oil pump with vaseline for the initial start up.
ATF is some handy stuff. It's super high detergent lubricating and hydraulic oil. You can soak your lifters in ATF to get all the gunk out. You can soak frozen parts in ATF to free them. You can soak cables frozen in their housings to restore their operation.
Any home garage rebuilt engine should have the oil changed after a couple hundred miles, anyway. And knurling is very old school and rarely recommended today; new parts are always recommended for repairs. But guess what - knurling still works! You can knurl and ream your valve guides too.
That’s fine that you filed the Pistons I guess, but how did you actually get the pistons out of the cylinders without splitting the block?
Subaru has access holes to remove the wrist pins that connect the rods to the pistons. You actually have to remove those wrist pins before you can split the block.
I am not a subaru mechanic but on the pistons why not have the skirts calico coated?
thanks for sharing for the first. would some one give a video to detail how to get the engine out (disconnect from all other parts) and how to get it in (re-connect to all other parts). that would definitely help "newbies". appreciate in advance.
Is epr and moa product by BG helps cleaning build-up
Looks like all the blocks (Ej253, 255, 257) are the same, basically what makes them different of the rest, is one have reinforcement pins in the cooling chanels, better crankshaft, and the heads. It means that you can actually swap the ej 253 block to a 255 block or 257 block with 253 heads. and take the 255 and put 257 heads. This is interesting!
Pretty sure my piston rings are fkd causing my engine to burn 1 quart of oil every 1000 miles or so, my CEL is on for clogged cat which is now rattling and probably falling apart. Need to pull the engine, possibly get new pistons with thicker rings, machine the heads, MLS head gaskets, new seal kit etc. rebuild the whole thing. Cant wait, never done a job like that
I have a 99Legacy and has a nasty vibration at bout 2500rpm. Its actually piston slap and makes the whole car shake. After 3000 its smooth as ever. Only consumes 1qt 3000mi which is amazing considering 🙄.
What about the old mechanic in a can Marvel Mystery Oil?
Very interesting on your unique work on the pistons bro. Great job on the budget. I would do the same too. :)
Best place an price for a engine rebuild 99 subaru SUS ej25? I am in lincoln city oregon
my two cents: I wish you would have stated your exact oil usage, your compression results, piston to cylinder wall clearance, (could have used feeler gauges ) and ring end gaps before and after. Like already stated knurling usually don't hold long. I'll check your channel and see if you've updated your results. Interesting
what oil would you suggest to use on a old engine the same as that one.
You need more subs. Good shit man
Are you in texas ? What would you charge to put pistons in the same engine For labor?
That is a lot of work LOL but it's worth it.....
I see some comments that this is not the right way to fix. But is this cheaper?
Cheap is the proper word. However Im betting inexpensive over time i am thinking not....
Very interesting, how did you manage to extract the wrist pins as you call them? In the UK we call them gudgeon pins. Surprised you didn't "glaze bust" the bores, why not? I'm also shocked Subaru are fitting "slipper pistons" with three rings, no wonder they burn oil, they're for race cars, the standard pistons are cast, while race pistons are forged as are the STI pistons.
Sti pistons arent forged, they're almost identical to the wrx pistons. Also a few years of the fxt and lgt shared the exact same internals as a 257 sti motor. The main difference between the internals from sti to WRX comes from the cc difference in the heads to create the different compression ratios. The only really different part is the rods for the sti
@Chris Santos
Hmmm well that's strange as I have oem wrx cast pistons sitting here in front of me, oh, & I also have oem forged sti pistons on the bench.
@@sgt-willkillumuch wow so you got some 02-04 207 pistons whoopty doo.
@Chris Santos
What??
You said sti pistons are not forged. So I'm commenting that sti pistons are in fact supplied in cast & forged versions.
So what exactly are you whoopty dooing about?
@@sgt-willkillu for 2 years in the u.s. sweet deal! Thats awesome buddy want a cookie for your awesome knowledge? Slap those 02-04 pistons in some 06+ sti motors make power whooptie dooo
Do my Outback next !
Wow why not just buy new pistons? Alot of money to spend just to cheap out on pistons
I don't know why I would have ever considered buying a Subaru. Glad I didn't. Anyways I'm here because of a buddies subi. You guys ever have luck seafoaming heavily or running a flush, heating the motor up and taking it for a spirited drive to free sticky rings? Seems like you could spray into the cylinders the night before and let them soak a bit
You don’t know what you’re missing
@@darylhill9400 nah I'll stick to jeeping and trucks haha.
filing by hand?!!!
I came here because I have a piston knurler. If you think he cheaped out without new pistons then you missed the whole point of the video. The idea is to save money on reusable pistons.
Wow, so much work for a little subie.
You are so quick - I wish you'd come and help me build my EJ motor :-)
1/2 thou.. Isn't it. 003 piston to wall clearance? Just throw new pistons in it.
What oil viscosity and brand of oil do you use?
Every thing about that knurling seems awful. Y not just get the skirts re-coated?
Would you be willing to help me 20x swap my legacy gt limited? Just advice mainly?
Were in WA are you can I bring you my motor to look at 😬
Hey homey, Subaru has a terrible problem on their vehicles burning oil excessively. Class action was settled which resulted in Subaru doing little or nothing to correct the problem. They do oil consumption test where they change your oil, over fill it, oil consumption goes away until later it “magically” reappears. I think I’ll be calling my attorney to help get this crap taken care of. Hellof a way to treat customers because of a crap design.
Mine does the same. If I overfill it it's good for a couple weeks and then BAM.......nothing on the dipstick
What year and model you got? Had a forester that burned about a quart between changes if I drove it hard but nothing crazy
And the beat goes on . . . No QC. . . . Subaru Profit is Everything.
These engines are *still* designed to allow *Generous Oil Blo-By.
The inverted oil filter empties in
not many people would pay out that money on a 2000 subaru .I own one and luckily don't have that problem but got it with 90k miles and change the oil regularly . It beats a new car payment though and with new head gaskets it could go another 100k easily
Exactly, repair and rebuild and relax without a car payment
Sleeves also need to be replaced, or it will just ruin those pistons.
Nice work, I have the same N/A 2.5 SOHC in my 07 Impreza, no issues yet, there will come a day when I will be pulling the engine for reconditioning, Peace
How much oil were you burning
Bacon pancakes, bacon bacon, pancakes.
Can you remember the usage? I've heard 1l/1000 miles is fine
SuperHans I'm burning quart every 1000 miles. In my sti
My 2002 Impreza is burning oil at that rate... with 315k miles on it. So far, knock on wood, just been adding oil and getting away with it. Passes pollution inspection. At least so far! Runs fine other than having to add oil.
You could have fixed that engine with high probability by dropping 2 cans of RVS triboceramic engine restore. It fills up the micro ridges in worn engines and restores compression + lubricates. Every metal to metal surface gets a ceramic coating. Cost is only 150 bucks per treatment.
how is that stuff? I hear it is amazing but have also been told it can really cause damage ??
@@joelturnill105 No, it's been TüV tested in Germany (a very famous testing facility). It does what it promises and causes no damage. I've been personally using it for a decade in my Mercedes engines and Jeep CRD and my Jeep passed emissions with 0% smoke at 150k miles on the clock... The engineer didn't believe the result and did the test again with another device. Same result...
@@marttiinnanen4911 thanks for getting back to me. Is it easy to do the procedure? I am from vancouver Canada. Where are you from ?
@@joelturnill105 I'm from Finland. RVS treatment is really easy, follow the instructions ;)
No really, put 1 portion in, let it idle, then drive for 30 minutes at random speeds... then do step 2 which is about the same. On many engines you'll notice near immediate smoothing of engine sound and better running. I have fixed 3 whiny power steering pumps of my Mercedeses successfully and avoided thousands of dollars of repair.
Where you located bro?
Why didn't you just buy new STD size pistons ?
Everyone here talking about not getting new pistons but ignored that he put in new rings without a hone or anything
👍👍
Это круто!
Most people would just junk the car since its uneconomical to repair. It's understandable since most people cannot work on an engine like this, and they would need to pay someone for all the labor that costs more than the car is worth .I like seeing this, a perfect car being restored by professional hands and not thrown away to the scrap yard.
I remember when Americans used to repair and rebuild there automobiles! And reupholster seats! Whatever happened.
👍🙂
No Hone??!? probably off camera... shouldn't leave it out forthe viewers! lol
Good but not good
Not even close to correct rebuild for those that are thinking of doing it exactly like this.
1 Rebuild engine using oem spec oil only as lube for all parts
2 Check cross hatching, honing is not needed if it is intact
3 use bore (T) gauge to measure how warn cylinder is
4 always check ring gap on piston at three separate heights in cylinder
5 lining up wrist pin clips properly will save your engine
6 be meticulously clean, majority of engine failures are caused by contaminated oil
7 pre fill OEM oil filter and pull crank/cam sensor connectors to keep engine from firing to prime oil system, turn engine over with ignition(key) for 30seconds then replace sensor connectors and start engine
8 change oil asap after reaching normal operating temperature as any contamination from rebuild will be in the filter at this point
9 change oil using oem spec oil and oem filter for longest subaru engine life, always reach normal operating temp before shutting car off and resist long idle times to warm up car, get in and drive
10 you did really well and saved money doing it. Dont stop learning and taking on new projectsb what I covered only scratches the surface of proper engine rebuilding but can save you from doing it twice and thats worth time/money
PS I vote engine swap from low km doner vs rebuild unless your time is worth nothing and gaskets etc are free
Great vid- Bjorn Racing on FB
What would the correct wrist pin clip line up be? This is the first i've heard of that.
@@drkbltn you a master tech or engine builder? I left tons of info out for the proper rebuild. Im not teaching a full engine building class via youtube comments. It takes thousands of hours and many learning opportunities to be an actual mechanic, just because mom cooks doesn't mean she is a chef.
Think about the forces acting on the piston and install clips accordingly.
RUclips lets people watch others get away with murder and call themselves pro all the time. Makes for messy inefficient work and many steps missed that may cause failure.
Subaru has had piston problems since the 1980's. It's a failure in their management and engineering process.
And Chevy, and Honda, etc. Trying to eek out 1 mpg for CAFE is killing engines!
We are the lab rats.
My 2008 STi burn to much oil 😑fuck
That isn't going to fix the problem, all your doing is a cheap fix instead of replacing the pistons...Waste in my opinion and that filing is in no way accurate...But props on the mechanical skills.
anthony aguilar you’re right, that’s why the car is still running great.
Right, but is it really worth it? I would do it the right way; Overbore and new pistons.
anthony aguilar at least a re hone and new pistons and rings, but the engine did sound fine at start up
I figured as long as you are going that far, just have the cylinders rebored and install oversized brand new pistons. I have done several rebuilds and too many engine replacements to count over the years. I am not tearing an engine down that far just to " fluff" up the engine. If you have over 100k on that engine, a rebuild is in order, period.
omg I would never buy a subaru.
To each his own man, but I've got 4 of them and I really have no issues. Up to 350k miles no issue.
If you treat your engine like sh*t you could drive a toyota/honda and screw it up more. If you take care of your car and actually do maintenance at the recommended intervals. You will rarely have issues period.
You don’t know what you’re missing, wonderful cars! Don’t believe all the propaganda.
Gbjk
I disliked video just because you didn’t put new pistons in. Other than that a pretty good video.
This is why I like electric cars.
Say the guy that doesnt drive.
Electric cars are soulless pieces of shit for simple minded non engineering type folk