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Old 06-25-2016, 09:48 PM   #1
dreadz
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Default Cannot remove cam sprocket bolts on EJ255

I tried removing the cam sprocket bolts on my EJ255 with a compressed air impact wrench. They didn't budge. I then bought a 150 psi air compressor that runs at 4.0 CFM at 90 psi and an Ingersoll Rand impact wrench (model eb2125x) that boasts 690 ft-lb reverse torque with an average air consumption of 5 CFM. The bolts are still not coming out. I am using a 10mm allen key socket with a 3/8 to 1/2 inch adapter for the impact wrench. Are these bolts reverse threaded or did someone way over tighten them? Is my air compressor or impact wrench not strong enough?

Also I noticed that the mark on the upper passenger side cam sprocket is not lined up with the mark on the timing belt cover. I'm not sure if it has been like this or the cam sprocket jumped teeth on the belt while I was trying to loosen the bolts. The green mark I put on the cam sprocket is still aligned with the green mark I put on the timing belt so it seems like it might have been like this already. Are my valves ****ed? Can I just loosen a tensioner and move the cam sprocket back to the correct index?

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Old 06-25-2016, 10:05 PM   #2
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Old 06-25-2016, 10:10 PM   #3
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drill the heads off. its the safest method by far.
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Old 06-25-2016, 10:11 PM   #4
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Old 06-25-2016, 10:30 PM   #5
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Quote:
Originally Posted by Mahtava View Post
My bolts are not rounded off so this method is the same as what I've tried, which is using an impact wrench.

Quote:
Originally Posted by n2oiroc View Post
drill the heads off. its the safest method by far.
I guess I'll be doing this, after the method suggested in the reddit thread, holding the cam sprocket with a large pipe wrench and breaker bar, and an allen key with breaker bar.
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Old 06-25-2016, 10:36 PM   #6
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Can anyone tell me if my one cam sprocket being out of index with the other sprockets means my valves are damaged?
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Old 06-25-2016, 10:38 PM   #7
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Quote:
Originally Posted by dreadz View Post
My bolts are not rounded off so this method is the same as what I've tried, which is using an impact wrench.

I guess I'll be doing this, after the method suggested in the reddit thread, holding the cam sprocket with a large pipe wrench and breaker bar, and an allen key with breaker bar.
dont hold the sprocket with anything but the belt. all that does is guarantee you will have to buy an expensive sprocket. all that torque you are applying is trying to overcome huge pressure between the bolt head and cam face. bolts are like super stiff springs. 1/8"-1/4"-3/8" drill bits in a series right in the center of the bolt will pop the head off and not damage the cam or sprocket. as soon as the bolt head is off, the tension is gone and the remaining threaded stud in the can will unscrew with your fingers.

drill slow and spray lube on the tip of the bit and it will take 5 min tops per bolt. too fast of drill speed or too much heat from no lube and you work harden the surface and make more work for yourself.
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Old 06-25-2016, 10:43 PM   #8
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Quote:
Originally Posted by dreadz View Post
Can anyone tell me if my one cam sprocket being out of index with the other sprockets means my valves are damaged?
cam sprocket slipping and going to its natural resting position isnt going to bend valves if its released slowly.
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Old 06-25-2016, 10:46 PM   #9
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Originally Posted by n2oiroc View Post
dont hold the sprocket with anything but the belt.
Quote:
Originally Posted by n2oiroc View Post
cam sprocket slipping and going to its natural resting position isnt going to bend valves if its released slowly.
Okay, thank you.
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Old 06-25-2016, 11:12 PM   #10
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If all the other marks line up, you could be hosed! Those double marks are suppose to be pointing down.


The pic looks like it is the sprocket on the intake of the passenger side. If it is, you might of lucked out. The pistons will be half way down and no exhaust valves are open on the passenger side when lining up timing marks.
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Old 06-25-2016, 11:58 PM   #11
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Try using a chain wrench and your old timing belt. cut your old timing belt and wrap it around the gear, cut the excess belt. then wrap the chain around and try to break the bolt with 10 mm allen and breaker bar. it works for me . its a crank pulley holder but it works on cams . https://www.amazon.com/OTC-24-Ratche.../dp/B000I1R27K
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Old 06-27-2016, 12:11 AM   #12
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Got the bolts out this morning with PB Blaster and a breaker bar. Had someone hold a socket wrench on the harmonic balancer bolt, they also had to hold the engine down because I was lifting the engine and engine stand off the ground. The 1/2 to 3/8 socket adapter snapped on the 3rd one, so we got the last two out with a regular allen key and breaker bar. I was so surprised the bolts didn't round out on any of them.

Thanks for the help guys!
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Old 03-23-2018, 05:43 PM   #13
easy fix
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Default Subaru Cam bolt removal trick!

Check this video out. It solves all your cam bolt removal issues as long as you haven't stripped the allen head. I hope it helps!
~shaun

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Old 04-01-2018, 12:35 PM   #14
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Quote:
Originally Posted by dreadz View Post
Can anyone tell me if my one cam sprocket being out of index with the other sprockets means my valves are damaged?
As long as the crankshaft mark is still in the correct lined up position you should be ok
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Old 04-02-2018, 05:33 PM   #15
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Man my bolts were in there right as hell. We used 3/4 drive and got em out. Rediculous
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Old 04-15-2018, 08:59 AM   #16
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Default Cannot remove cam sprocket bolts on EJ255

I really don’t understand why people try to use an impact that has a lot of torque. These bolts are soft AF. Use the right tools:

Company 23 cam sprocket tool and a breaker bar. Maybe grab a buddy to help out. And when you strip it out, which happens grab an axle nut and weld the center point slowly to allow the heat to dissipate and back it out with a socket.
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Old 04-16-2018, 11:58 AM   #17
parf909
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Default Cam Sprocket Tool

Buy the Cam Sprocket tool for $100 and use a breaker bar. When you hold the cams with the tools from Company 23, and use a proper breaker bar it's easy to remove these bolts. Then buy the hex head bolts from IAG to build your new motor.

http://www.company23.com/products/subarutools
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Old 04-16-2018, 02:47 PM   #18
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Quote:
Originally Posted by parf909 View Post
Buy the Cam Sprocket tool for $100 and use a breaker bar. When you hold the cams with the tools from Company 23, and use a proper breaker bar it's easy to remove these bolts. Then buy the hex head bolts from IAG to build your new motor.

http://www.company23.com/products/subarutools
IAG has some absolutely outstanding hex head cam bolts. They have a proper hex for grabbing onto, PLUS since the hex is 17mm you can use the Company 23 cam holder tool with the fitting for the old NA Subarus. In fact, I'm pretty sure they among one of the most amazing ideas for Subarus I have ever seen. Whomever came up with the idea for these is pretty likely a totally awesome dude, and people should send him cookies.
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Old 04-18-2018, 01:44 AM   #19
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Quote:
Originally Posted by Turn in Concepts View Post
IAG has some absolutely outstanding hex head cam bolts. They have a proper hex for grabbing onto, PLUS since the hex is 17mm you can use the Company 23 cam holder tool with the fitting for the old NA Subarus. In fact, I'm pretty sure they among one of the most amazing ideas for Subarus I have ever seen. Whomever came up with the idea for these is pretty likely a totally awesome dude, and people should send him cookies.
I will gladly send cookies if you can post up a link to these unicorn cam bolts. I searched the IAG site for a half hour and came up blank.
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Old 04-18-2018, 10:11 AM   #20
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I will gladly send cookies if you can post up a link to these unicorn cam bolts. I searched the IAG site for a half hour and came up blank.
https://www.iagperformance.com/searc...&Submit=Submit
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Old 04-18-2018, 12:22 PM   #21
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Hahahah! I should have known! Yeah, without question, whoever came up with these things is a totally awesome dude indeed! LOL

Thanks for the link!
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