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03-12-2013, 05:14 PM | #126 |
Scooby Newbie
Member#: 292364
Join Date: Aug 2011
Chapter/Region:
MWSOC
Location: Neeebraska
Vehicle:2011 WRX ISM |
Car is going back in the garage for a week..when i get back from Texas I'm gonna pull the drivers side valve cover and see what the hell is goin on
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03-12-2013, 10:00 PM | #127 |
Scooby Specialist
Member#: 175898
Join Date: Mar 2008
Chapter/Region:
South East
Location: Ga
Vehicle:2002 Impreza WRB |
I have been following this thread for a while because my built long block ticks but my tuner assures me it is noisy injectors. I double checked the lash on the heads because it has cams but everything is within spec, will contine to beat on it until it blows and let you know if tuner is correct, 5k miles on it so far and no problems.
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03-12-2013, 10:05 PM | #128 |
Scooby Newbie
Member#: 292364
Join Date: Aug 2011
Chapter/Region:
MWSOC
Location: Neeebraska
Vehicle:2011 WRX ISM |
I took it to a Subaru tech and had him listen and he told me to double check the valve lash on the cyl 2 exhaust valves
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03-14-2013, 05:23 PM | #129 |
Scooby Newbie
Member#: 171471
Join Date: Feb 2008
Chapter/Region:
SWIC
Location: Phoenix AZ
Vehicle:2002 35r wrx Silver |
Here is what i have had in the past with subaru dealer ships installing the intake cam gears wrong. The came gear is not fully on the cam pin. So what ends up happening is, the cam gear cannot spin the cam all the way over causing a slapping sound. Take the cam gear off on that side and make sure its in the right spot.
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03-14-2013, 06:00 PM | #130 |
Scooby Newbie
Member#: 261447
Join Date: Oct 2010
Chapter/Region:
NWIC
Location: Mt. Shasta
Vehicle:2004 Impreza WRX WRB |
^ If his cam wasn't rotating all the way, then he would be bending valves/ hearing all kinds of bad news.
Also I think he said earlier that he had re-assembled the motor, so i doubt improper cam gear assembly. OP did you check rod bearings while the motor was out? Its possible that when your wrist pin went out, it was putting added stress on the bearings. |
03-14-2013, 06:06 PM | #131 | |
Scooby Newbie
Member#: 292364
Join Date: Aug 2011
Chapter/Region:
MWSOC
Location: Neeebraska
Vehicle:2011 WRX ISM |
Quote:
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03-15-2013, 10:47 AM | #132 |
Scooby Newbie
Member#: 171471
Join Date: Feb 2008
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SWIC
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Vehicle:2002 35r wrx Silver |
You would think that it would bend the valves but it doesn't. the cam never spins over allowing the valves to open. That is not rod knock. far from from it. Check your cam gear. it does not matter that he has taken it apart if the pin hole is messed up, it will allow the cam gear to slip. Put a scope on it and listen to where the noise is coming from.
This video is rod knock . https://www.youtube.com/watch?v=sik-OddhWzo |
03-15-2013, 11:38 AM | #133 |
Scooby Specialist
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SWIC
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Vehicle:2013 Sti World Rally Blue |
If the valves don't open then it runs on 2 cylinders which would be obvious immediately.
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03-15-2013, 12:24 PM | #134 | |
Scooby Newbie
Member#: 292364
Join Date: Aug 2011
Chapter/Region:
MWSOC
Location: Neeebraska
Vehicle:2011 WRX ISM |
Quote:
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03-20-2013, 12:28 AM | #135 |
Scooby Newbie
Member#: 292364
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Chapter/Region:
MWSOC
Location: Neeebraska
Vehicle:2011 WRX ISM |
Valve lash on the drivers side head is all in spec except cyl 4 intake valves which measured at .010-.011 where all the others were about .006-.008. Is this really enough to cause the noise I am hearing?
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03-20-2013, 12:14 PM | #136 |
Former Vendor
Member#: 190729
Join Date: Oct 2008
Chapter/Region:
NWIC
Location: Marysville, WA
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10 intake and 11 exhaust WILL cause lots of noise.
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03-20-2013, 02:47 PM | #137 |
Scooby Newbie
Member#: 292364
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Chapter/Region:
MWSOC
Location: Neeebraska
Vehicle:2011 WRX ISM |
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03-20-2013, 03:06 PM | #138 |
Former Vendor
Member#: 190729
Join Date: Oct 2008
Chapter/Region:
NWIC
Location: Marysville, WA
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The bigger the cam and the faster the ramp rates the more noise it will make.
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03-21-2013, 10:14 PM | #139 |
Scooby Newbie
Member#: 292364
Join Date: Aug 2011
Chapter/Region:
MWSOC
Location: Neeebraska
Vehicle:2011 WRX ISM |
So if I were to say that my valve lash wasn't the problem what would be the next thing to look into?
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03-21-2013, 10:17 PM | #140 |
Scooby Newbie
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Chapter/Region:
MWSOC
Location: Neeebraska
Vehicle:2011 WRX ISM |
I'm wondering if I have a problem with a valve spring or retainer. There's just nothing else left to be bad lol
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03-21-2013, 10:23 PM | #141 |
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Member#: 170602
Join Date: Jan 2008
Location: j-ville fl
Vehicle:06 Wrx RWD Auto 76MM-AEM-2200's |
Seems like you'd notice a retainer issue though when you reassembled
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03-21-2013, 10:26 PM | #142 |
Scooby Newbie
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Join Date: Aug 2011
Chapter/Region:
MWSOC
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Vehicle:2011 WRX ISM |
I didn't pull the valves out though. Also have been reading tons of issues with weak Brian crower valve springs
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03-21-2013, 10:29 PM | #143 |
Scooby Guru
Member#: 170602
Join Date: Jan 2008
Location: j-ville fl
Vehicle:06 Wrx RWD Auto 76MM-AEM-2200's |
Hmm good point. Maybe that's something you could try if/when you get back in there. Disassemble head and check everything. Maybe aspiring is weak or broken or retainer binding up
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04-02-2013, 07:47 PM | #144 |
Scooby Newbie
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NESIC
Location: Connecticut
Vehicle:2005 Sti Psm |
Any updates? I have bc cams and springs and I am also experiencing some of these issues as well.
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04-02-2013, 08:06 PM | #145 |
Scooby Newbie
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Vehicle:2011 WRX ISM |
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04-23-2013, 04:05 PM | #146 |
Scooby Newbie
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MWSOC
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Vehicle:2011 WRX ISM |
No cracked retainers, valve springs look ok. One weird thing however is on all of the exhaust valves the valve locks seemed to be stuck in the retainers and I had to hit the retainers fairly hard to get the locks to pop out. I'm about to just order all new springs and retainers and replace all of the buckets.
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04-24-2013, 12:14 AM | #147 |
Scooby Specialist
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Make sure the heads are torqued to the block when you measure and adjust the valves. Otherwise they can be adjusted out of spec.
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04-24-2013, 02:16 AM | #148 |
Scooby Specialist
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NWIC
Location: CA
Vehicle:06 WRX 30r 6 speed 99L EJ255 6 Speed |
Check your AVCS values in RomRaider or whatever logger you use. If the values are off between left and right you could have an AVCS gear or solenoid issue.
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04-24-2013, 02:35 AM | #149 |
Scooby Newbie
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MWSOC
Location: Neeebraska
Vehicle:2011 WRX ISM |
Thanks for the idea, thought about that and checked them in my aem and they were fine. Also swapped solenoids between heads and nothing changed
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04-24-2013, 09:10 PM | #150 |
Scooby Newbie
Member#: 292364
Join Date: Aug 2011
Chapter/Region:
MWSOC
Location: Neeebraska
Vehicle:2011 WRX ISM |
I'm going to take the drivers side avcs gear apart tmr when I get to work and see if its possibly sludged up. I did have a bearing failure on my old engine and ended up reusing these cam gears without cleaning them
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