Rocker put a hole in valve cover - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

leets4uc3 · 02-17-2017, 03:27 PM

Hello All.

I have a 2013 FRS running a 210 sprintex supercharger and last week while I was doing a mountain run, a rocker punched a hole in the valve cover. I'm planning to rebuild with new internals, but I need some advice on what I need and how far I should go depending on the shape of the motor.

I'd like to run the same setup, but with a little more boost. I was running about 6 psi when everything went south. What parts do you guys think I should upgrade to have a stable car in the distance future? Rods? Valves? Piston? Springs? Internals are new to me so I'm open to pretty much any idea and would like to learn more.

http://imgur.com/mOTf0Hv

guybo · 02-17-2017, 03:30 PM

Damn only 6psi? I'm sorry for engine dude. How many miles did the engine have before you installed the window?

leets4uc3 · 02-17-2017, 03:36 PM

Quote:

Originally Posted by guybo

Damn only 6psi? I'm sorry for engine dude. How many miles did the engine have before you installed the window?

Car has 30K. Had the new SC head unit on for 4 days then this happened... It was without a SC for 2 months before that...

scottman · 02-17-2017, 04:04 PM

That suck's.
Thaaaats going to be pricy.

Tokay444 · 02-17-2017, 04:36 PM

Quote:

Originally Posted by guybo

Damn only 6psi? I'm sorry for engine dude. How many miles did the engine have before you installed the window?

Boost is irrelevant.

Pat · 02-17-2017, 04:38 PM

Go to a trusted local race shop that has experience with forced induction on this platform. Do what they say.

humfrz · 02-17-2017, 07:48 PM

Quote:

Originally Posted by Pat

Go to a trusted local race shop that has experience with forced induction on this platform. Do what they say.

@leets4uc3 ........ in addition ....... I suggest you have them do it for you .....

humfrz

leets4uc3 · 02-17-2017, 07:56 PM

Quote:

Originally Posted by humfrz

@leets4uc3 ........ in addition ....... I suggest you have them do it for you .....

humfrz

Honestly that's the plan. I need to find a tuning in Arizona. JDL and USM won't do it. Thought I could get some info here before I find one

muckypuppy · 02-17-2017, 08:14 PM

Look into upgrading your heads and/or upgrading springs and valves. My 2013 BRZ did the same during January 2014 while still n/a. The feedback from Subaru was that it was due to the design of the roller rocker retaining pins and that they are liable to work loose, which is what happened to mine sending a valve into my engine bay. I was talking to the Subaru Master Tech who rebuilt mine and he said that he shimmed my springs to make them stiffer. He also mentioned that in the last couple of years he has seen at least another 5 with the same issue while working at my local dealership, but not to the same extent as mine lol. Pretty sure this explains changes to the valves and springs and other slight changes to head designs over consecutive model years. Mine was an April 2013 build.

leets4uc3 · 02-17-2017, 08:58 PM

Quote:

Originally Posted by muckypuppy

Look into upgrading your heads and/or upgrading springs and valves. My 2013 BRZ did the same during January 2014 while still n/a. The feedback from Subaru was that it was due to the design of the roller rocker retaining pins and that they are liable to work loose, which is what happened to mine sending a valve into my engine bay. I was talking to the Subaru Master Tech who rebuilt mine and he said that he shimmed my springs to make them stiffer. He also mentioned that in the last couple of years he has seen at least another 5 with the same issue while working at my local dealership, but not to the same extent as mine lol. Pretty sure this explains changes to the valves and springs and other slight changes to head designs over consecutive model years. Mine was an April 2013 build.

That was my original thought with the heads. I still don't how messed up my motor is. I haven't check for metal shavings or anything yet. Will probably get motor out next weekend and see. Im assuming have the old rockers in mine. I wish it happened before I was modded.

muckypuppy · 02-17-2017, 09:49 PM

Yeah, I was lucky mine was covered under warranty. I think mine may still have the MY13 spec springs and valves but I do know the tech said he 'shimmed the hell out of them' . My block required flushing but was given the all clear and then rebuilt with all new factory internals.
In response to the other part of your query I have been running a Cosworth supercharger for 2 years now with no issues, but will be looking at rebuilding the engine when it comes time to go higher boost. My kit runs just a touch over 7 psi so about the same as your Sprintex. Cosworth have hinted that around 8 psi is what they consider to be a 'safe' limit for engine longevity due to the way the rods are constructed, and that they are the weak link in the bottom end. Heres a link to a video with their chief engineer who briefly describes their testing process and how they came to this conclusion.
[ame="https://www.youtube.com/watch?v=2pP7SxeKcJQ"]Product Showcase | Cosworth GT86 Supercharger | Autosport International 2016 - YouTube[/ame]

weederr33 · 02-17-2017, 10:50 PM

Quote:

Originally Posted by muckypuppy

Yeah, I was lucky mine was covered under warranty. I think mine may still have the MY13 spec springs and valves but I do know the tech said he 'shimmed the hell out of them' . My block required flushing but was given the all clear and then rebuilt with all new factory internals.
In response to the other part of your query I have been running a Cosworth supercharger for 2 years now with no issues, but will be looking at rebuilding the engine when it comes time to go higher boost. My kit runs just a touch over 7 psi so about the same as your Sprintex. Cosworth have hinted that around 8 psi is what they consider to be a 'safe' limit for engine longevity due to the way the rods are constructed, and that they are the weak link in the bottom end. Heres a link to a video with their chief engineer who briefly describes their testing process and how they came to this conclusion.

I posted that video in the Cosworth owners thread

Ultramaroon · 02-18-2017, 12:01 AM

You guys are all over the fucking map. It's just a rocker arm with the shitty pins.

Replace all rocker arms with decent ones, and whatever else is broken.

Check valve lash and shim everywhere necessary.

Put it back together.

Drain & refill oil.

Drive it for 20 minutes.

Drain & refill oil. Replace oil filter.

Drive it.

Pat · 02-18-2017, 12:50 AM

You may be ignoring the root cause.

02-17-2017, 03:27 PM	#1
leets4uc3 Member Join Date: Feb 2017 Drives: Sprintex carbon fiber wide body Location: arizona Posts: 77 Thanks: 28 Thanked 15 Times in 13 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Rocker put a hole in valve cover Hello All. I have a 2013 FRS running a 210 sprintex supercharger and last week while I was doing a mountain run, a rocker punched a hole in the valve cover. I'm planning to rebuild with new internals, but I need some advice on what I need and how far I should go depending on the shape of the motor. I'd like to run the same setup, but with a little more boost. I was running about 6 psi when everything went south. What parts do you guys think I should upgrade to have a stable car in the distance future? Rods? Valves? Piston? Springs? Internals are new to me so I'm open to pretty much any idea and would like to learn more. http://imgur.com/mOTf0Hv

02-18-2017, 12:01 AM	#13
Ultramaroon 義理チョコ Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,871 Thanks: 52,137 Thanked 36,522 Times in 18,923 Posts Mentioned: 1107 Post(s) Tagged: 9 Thread(s)	You guys are all over the fucking map. It's just a rocker arm with the shitty pins. Replace all rocker arms with decent ones, and whatever else is broken. Check valve lash and shim everywhere necessary. Put it back together. Drain & refill oil. Drive it for 20 minutes. Drain & refill oil. Replace oil filter. Drive it. __________________ service manuals

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02-17-2017, 03:30 PM	#2
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	Damn only 6psi? I'm sorry for engine dude. How many miles did the engine have before you installed the window?

02-17-2017, 04:04 PM	#4
scottman Member Join Date: Jun 2012 Drives: 13 mt fr-s Location: Halton Hills, Ont. Posts: 171 Thanks: 73 Thanked 96 Times in 48 Posts Mentioned: 0 Post(s) Tagged: 1 Thread(s)	That suck's. Thaaaats going to be pricy.

02-17-2017, 08:14 PM	#9
muckypuppy Member Join Date: Nov 2015 Drives: MY13 SWP BRZ Cosworth 2.3 Location: Australia Posts: 76 Thanks: 32 Thanked 43 Times in 32 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Look into upgrading your heads and/or upgrading springs and valves. My 2013 BRZ did the same during January 2014 while still n/a. The feedback from Subaru was that it was due to the design of the roller rocker retaining pins and that they are liable to work loose, which is what happened to mine sending a valve into my engine bay. I was talking to the Subaru Master Tech who rebuilt mine and he said that he shimmed my springs to make them stiffer. He also mentioned that in the last couple of years he has seen at least another 5 with the same issue while working at my local dealership, but not to the same extent as mine lol. Pretty sure this explains changes to the valves and springs and other slight changes to head designs over consecutive model years. Mine was an April 2013 build.

02-17-2017, 09:49 PM	#11
muckypuppy Member Join Date: Nov 2015 Drives: MY13 SWP BRZ Cosworth 2.3 Location: Australia Posts: 76 Thanks: 32 Thanked 43 Times in 32 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Yeah, I was lucky mine was covered under warranty. I think mine may still have the MY13 spec springs and valves but I do know the tech said he 'shimmed the hell out of them' . My block required flushing but was given the all clear and then rebuilt with all new factory internals. In response to the other part of your query I have been running a Cosworth supercharger for 2 years now with no issues, but will be looking at rebuilding the engine when it comes time to go higher boost. My kit runs just a touch over 7 psi so about the same as your Sprintex. Cosworth have hinted that around 8 psi is what they consider to be a 'safe' limit for engine longevity due to the way the rods are constructed, and that they are the weak link in the bottom end. Heres a link to a video with their chief engineer who briefly describes their testing process and how they came to this conclusion. [ame="https://www.youtube.com/watch?v=2pP7SxeKcJQ"]Product Showcase \| Cosworth GT86 Supercharger \| Autosport International 2016 - YouTube[/ame]

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