Subaru EJ25 SOHC Camshaft Timing
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- Опубліковано 7 вер 2024
- Setting camshaft timing on a Subaru EJ25 SOHC
Tools used:
MATCO Crank Pulley Holder
www.matcotools...
Company 23 Crank Pulley tool
www.company23.c...
Lisle seal puller
www.tooltopia....
www.amazon.com...
Flat Irons Tuning, seal installers
www.flatironstu...
I'm doing the timing sprockets and pulley's. Be aware some belts don't have the timing marks on them.
Thanks very much,,,
Aloha, great video. I have a couple of questions. My daughter has a 2005 Subaru Impreza RS 2.5 SOHC. I had to have the valves replaced and after reinstalling the headers and putting everything back on the engine, I was preparing to install the new timing belt kit and found the driver side camshaft sprocket and the crankshaft sprocket were not aligned properly. I was able to turn the driver side camshaft sprocket so the red dot lined up with the line on the engine but the crankshaft wont budge. any advice? I still haven't installed the timing belt yet because I dont want to have to remove it again and reinstall it. Mahalo!
It is good practice to make sure everything freely rotates before putting the heads on. The crankshaft timing mark places all of the pistons in the half way position. This allows you to rotate the camshafts without the valves hitting the piston tops. It may be that you have made valve to piston contact. It would probably be best at this point to remove the heads and check for damage.
Thanks man 😊
Thanks...big help!
On EJ25 SOHC non-turbo, 4 cylinder I put new timing belt on and between phone calls I forget to release the tensioner; and I went ahead to turn the engine two rounds in order to make sure things are Ok, that's were I found out that the belt jumped. Now, how do I set all three markers of Crankshaft and camshafts are back in were they should be.
I'd recommend taking the belt off and following the timing procedure. Since you haven't pulled the pin to release the tensioner, this will be the fastest and easiest way.
Do you have to rotate the crankshaft half a tooth in order to have everything be aligned when you pull the pin from the tensioner pulley? If so what direction do you turn it.
No, the marks should all line up.
@@tolsgarage1641 awesome. Thank you.
Tol, I’m Lining up just as you have outlined and when I turn the crank the valves are hitting the piston on the drivers side at about 25 degrees rotation. I’m stuck. Any ideas on what could be wrong? same engine.
Hey marxtr6, don't forget that the cams are not timed at TDC. The timing is marked with the pistons half way in/out so you can rotate the cams without the valves hitting the piston tops. Double check that you are using the correct timing marks. I have added a few pictures for you to check out at my link below. www.tolsgarage.com/2018/09/right-pulley-timing/
Hi Tol, Thanks for your response. Both cam sprockets are oriented to the correct timing marks and the crank gear is aligned to the mark as you discuss, but as I rotate the crank, it hits stops at about 25 degrees, leading me to belive that something maybe wrong internally. Any thoughts?
@@marxtr6 did you ever figure this out? I might have a similar issue. Was it that your camshaft was one rotation off?
@@rebeccapattengale3612 sorry, I just saw this and @marxtr6 left a head bolt washer in the cylinder. He had to take the head off to remove it.
this prolly a dumb question but how would i rotate the crank shaft without the pulley and the bolt in? can i just thread the bolt back in and be fine? should i put the pulley back on with the bolt and run it that way? how will i get the bolt back out without the pulley to be able to hold it still? i just wanna see if its in time or if i need to mess with it
You can put the pulley back on but there is also a tool to do that. Here is the link for the tool. www.amazon.com/CTA-Tools-7630-Socket-Subaru/dp/B076N2WNR2
Good luck! Thanks for watching.
I'm confused with tightening the crank bolt. Maybe there are different options per the year of your ej25. My manual says initial torque of 33ft/lbs and then 138.5ft/lbs but you must exceed 65 degrees when reaching the torque value. Am I reading it correctly about exceeding 65 degrees? I saw a channel where they said to not exceed 65 degrees when reaching final torque value.
Hey Allen, good question.
The crankshaft pulley bolt on this Subaru is a torque to yield fastener (TTY) or stretch bolt.
TTY fasteners are tightened beyond the state of elasticity and undergo plastic deformation which results in the fastener becoming permanently elongated.
TTY fasteners usually have to be replaced when loosened. Some, like your crankshaft pulley bolt, can be
reused if they pass both a visual inspection and the procedure listed in the service manual.
From the 2002 Subaru service manual for the 2.5 SOHC engine: clean the threads then apply oil, initial
tightening torque is 33 ft-lb. Then tighten to 130.2 ft-lb. The bolt should rotate 65 degrees or more.
If not, then the bolt has reached its limit and should be replaced.
Just to add to the confusion, when replacing the bolt with a new one, the procedure is different. With the new bolt, the first three steps in the manual are the same but the manual does not specify tightening to 130.2 ft-lb. The procedure is to initially torque the bolt to 33 ft-lb then additionally tighten the bolt to between 45 degrees and 60 degrees.
For more information, here is a link to a Technical Service Bulletin that discusses this.
cms.gates.com/~/media/Files/Gates/Automotive/Resources/Tech%20Tips%20and%20TSBs/Subaru_Loctite.pdf
I hope this helps. Good luck!
Tol, my ej25 soho rebuilt and ran fine. I recently had the timing belt fail. The ac idler belt tensioner failed and wore through the cover and damaged the timing belt.. anyway when replacing the timing belt I noticed that there are more than one distinct paint marks on the driver’s side cam sprocket. How do I insure/find TDC on this cam regardless of the marks? How would you find TDC with the cam sprocket off? Thanks
Just a quick reminder that cam timing is not done at TDC. The timing marks are placed
where the pistons are at mid stroke. This is to prevent the valves from coming into
contact with the piston tops. I'll attach a picture to show the correct mark. I hope this helps.
Thanks for watching!
Here is the timing mark:
drive.google.com/file/d/1hPyqEKvadv3tO87VbUqUQahTMC7hFJCv/view?usp=share_link
I was doing my timing and I don’t know if I bumped the camsprocket no.2 but it turned and I tried manually turning it but it keeps wanting to jerk back in the off position how do I manually turn into the aligned position so I can finish timing much help would be greatly appreciated
Make sure the crankshaft is aligned with the timing mark. This puts the pistons half way down so that as the valves open they won't hit the piston top. Then rotate the cams to the correct position. You will feel resistance to turning as the valves open, this is normal.
@@tolsgarage1641I have the same issue but no matter which one I turn it don’t line it up and jerks to one end or the other please need help
@@550_Alex , first make sure the crankshaft is aligned with the timing mark. This is not TDC. With this mark on the crankshaft aligned it puts the pistons halfway down so you can rotate the camshaft and as the valves open, they won't hit the top of the piston. Once you have the crankshaft timing mark aligned, rotate the cams to the correct position. You will feel resistance to turning as the valves open, this is normal.
This video title is misleading in that it has nothing to actually setting cam in correct time. It is about how to install timing belt and misleading at that. Also, tell me you haven't actually counted the teeth on the belt without saying it. The service manual is wrong for most of the ej25 engines in respect to belt tooth count either side including mine. The correct numbers are available online. If the info I found on the 40.5/44 number was correct it was for a very early model but I cannot confirm that.
after having heads done and reinstalled, Cams seems to be hard to stop on the cam timing marks, they just want to spring past them is this normal?
First, make sure that the crankshaft timing mark is aligned. This places the pistons halfway between top and bottom which allows you to rotate the camshaft without the valves striking the piston tops and potentially bending them. The camshaft normally will rotate with uneven force as the camshaft pushes against the pressure of the valve springs to open the valves. Rotate the camshaft slowly to align the timing mark.
thanks crank is on the timing market just seemed touchy to keep the left cam on the timing mark as if it coming of the lobes @@tolsgarage1641
MATCO Crank Pulley Holder
www.matcotools.com/catalog/product/SUBCPH198/subaru-crank-pulley-holder/#to-details
Company 23 Crank Pulley tool
www.company23.com/products/subarutools/503v2
Lisle seal puller
www.tooltopia.com/lisle-58430.aspx?adpos=1o2&scid=scplpLIS58430&sc_intid=LIS58430&gclid=Cj0KCQiAhrbTBRCFARIsACY7MW0mxkT-Lrk1M_bPQGatzkUn34QRgFeVjC4KllzIcYHQ-QVsM-ubZksaAq1SEALw_wcB
www.amazon.com/Lisle-58430-Shaft-Type-Puller/dp/B000FPYW4K
Flat Irons Tuning, seal installers
www.flatironstuning.com/c-1153-subaru-specialty-tools.aspx
my crankshaft doesn’t line up with the cams how do i get it to line up together
Align all of the timing marks with the belt off. Once everything is lined up then put the belt on. I hope this helps!
@@tolsgarage1641 Are the Crankshaft Sprocket along with the two Camshaft Sprockets supposed to spin together even with the belt off? I have a problem where my Crankshaft Sprocket lines up with the mark and my Cam Sprocket #1 (passenger side) lines up along with the Crankshaft Sprocket But, my Cam Sprocket #2 (driver side) is facing nearly 180⁰ towards the bottom while the other two are lined up. When spinning without the belt, only the Crank Sprocket was spinning but not the other two. I put the belt back on to get all three to spin. Was able to get the Crank Sprocket and Cam Sprocket #1 to line up but can't figure out what to do with Cam Sprocket #2. I'm considering taking off belt again and trying to turn it over. Any tips?
@@LoveInstead line up the crankshaft sprocket with the crankshaft timing mark, then remove the timing belt. With the timing belt off and the crankshaft sprocket aligned with the crankshaft timing mark, you can safely rotate the cams into the correct position. Then replace the timing belt.
@@tolsgarage1641 to rotate the cam sprockets to line up with their marks, how would I do that? Do I simply just turn it clockwise with their pulley bolt like it's done with the Crankshaft sprocket?
@@LoveInstead yes
Hope you're still out there. I just bought a kit and the new belt does not have timing marks. What now? Are these marks just for timing after installation? Thanx in advance.
Hey Cornfused Atbest, (awesome name BTW!) You can use a paint pen and put alignment marks on the belt. The first one will be the crankshaft, the right side cam mark will be 44 teeth away and the left will be 40 and one half teeth. Left and right are in relation to where the driver is setting. I hope that helps! Good luck!
Can a cam be 180 out?
If the marks line up it is in the correct position.
@@tolsgarage1641 I’m in the same debate, just did timing & I’m getting codes P0336 & P0340 (crankshaft & camshaft sensors). There’s absolutely no possible way for the cams to be off? The symptom I have is that the engine will ignite for half a second on crank up, then shit right off. Checked continuity & resistance on the sensors and it’s all ok. I’m stumped on what to try next.
@@WigglerRiggler
Hello Aaron:
Let’s focus on DTC P0336 first. The big hint here is that this describes the crankshaft position sensor harness as open or shorted. If the crankshaft sensor checks out, the ECU is detecting that the crankshaft position sensor circuit has a poor electrical connection. Check for damage at the connector and harness. Look for damage to the connector body and make sure that it clicks and locks into position. It may not be fully seated. Also check for broken, bent, pushed out, or corroded connector pins.
You can also monitor the rpm signal with a scan tool.
Low battery voltage can cause starting issues, so make sure you have a good battery with clean terminals and that it's fully charged.
Good luck!
is it common to have a slight play in the cam. My passenger side cam was 12-O'clock, but after lining up the 3 marks on the belt, it is slightly off, clock wise (CW) - 1/2 tooth, after installing the gear pully and idler bottom pulley , not yet pulled the pin. see picture. Is it common to have small play in the cams, I can just finger touch and move a little back and forth. drive.google.com/file/d/1vpBJQ2M9nsTmY0NzBJ145bykh9K9J3qN/view?usp=sharing
What it sounds like from your description is there is still slack in the belt, and since you haven't pulled the pin yet that would be normal. Thanks for watching!