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Proper tools to remove crank/cam sprockets
Proper tools to remove crank/cam sprockets
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Old 09-20-11, 07:21 AM   #1
wiretap_MD
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Default Proper tools to remove crank/cam sprockets

Hi guys. I'm getting all the necessary tools needed for my Cosworth longblock swap installation. Will be transferring my current cam sprockets from my 2011 STI EJ257 engine to the cosworth and use a Grimmspeed crank pulley.

1. For the OEM crank pulley removal and Grimmspeed lightened crank pulley installation, I will be using this tool: GrimmSpeed

2. For the cam sprockets, I plan on using this tool: Assenmacher SU3625 Subaru Cam Sprocket Holder
This is equivalent to the ST 499977500 tool stated in the FSM.

However, I found this tool from AMS: AMS 2008+ Subaru STI/EJ257 Cam Gear Wrench - Automotosports, Inc.
According to the website, this is for the exhaust cam removal only. I called up AMS and inquired about it and they confirmed that it is only for the exhaust cam. For the intake cam, you will need to use this tool from the 02-07 STI: AMS EJ20/EJ25 Cam Sprocket Tool - Automotosports, Inc.

The 2011 FSM only showed one tool that is to be used. Was the AMS tech guy know what he is talking about?

Grabbed some pics from NASIOC and I can't seem to picture out how to use those AMS tools in the sprockets. Where do they fit?



Thanks in advance guys.
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Old 11-20-18, 05:21 AM   #2
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Default Re: Proper tools to remove crank/cam sprockets

Were you ok with just the one tool mentioned in the FSM for installation and removal of the intake and exhaust cam sprockets? Or did you have to get separate tools for intake and exhaust?

Might have to replace a cam seal and am trying to get the tools needed straightened out.

Thanks.
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Old 11-20-18, 10:59 AM   #3
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Default Re: Proper tools to remove crank/cam sprockets

All Subaru Tools by Company 23


You're welcome.



Pay attention to the AVCS cam tools and non-AVCS tools
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Old 11-20-18, 11:04 AM   #4
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Default Re: Proper tools to remove crank/cam sprockets

I tried to use the Company 23 tools on my setup and ended up resorting to using the timing belt and clamp to holding it in place. The tool for the plastic cam gear (non-AVCS) took chunks out, so I had to buy new gears.

As for removing the bolt, I'd just start with a drill bit.

Honestly, no special tools are needed if you have any sort of experience doing this stuff on other vehicles.
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Old 11-20-18, 02:38 PM   #5
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Default Re: Proper tools to remove crank/cam sprockets

This was my setup.
EJ257 Cam Sprocket / crank bold removal - YouTube Irwin Bolt Grips...
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Old 11-20-18, 07:28 PM   #6
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Default Re: Proper tools to remove crank/cam sprockets

TIC FU Bolts for the win. I used company 23 tools for initial removal.
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Old 11-21-18, 09:04 AM   #7
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Default Re: Proper tools to remove crank/cam sprockets

Thanks for the input. I'm aware of the Company 23 tools (I have the cam lock and the crank pulley tool) and it seems it's the popular suggestion. What I'm confused about is why would you want to buy 2 of the Company 23 tools to do the job of what's supposed to be possible according to the FSM with 1 of the factory style (Subaru OEM #499977500) tool?

https://www.amazon.com/dp/B076N57GNQ - $50

vs

Dual AVCS Exh Cam Sprocket Tool - $40
AVCS Int Cam Sprocket Tool - $50

Also, this guy says the Company23 tools can snap the pin within the AVCS. Has anyone had issue with that? How might that have happened?

Subaru STI AVCS Cam Gears Tools Explained - YouTube
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Old 11-21-18, 07:00 PM   #8
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Default Re: Proper tools to remove crank/cam sprockets

Because that tool from CTA holds on to the actual center section of the cam gear, basically where the camshaft slides into. The center section on the gears are identical on all fours, which is why that tool can do the job of two tools.



And yes, I'm investigating the issue of using Company 23 cam gear tools damaging the alignment pins when I swap out my exhaust gear with a new one. My car makes a strange "clack clack" noise on some hot starts and I'm pretty sure a damaged AVCS gear is to blame, as this was an issue with my previous build. I used a brand new gear just a couple months ago and it's already showing the same symptoms and noises. I believe those tools are made for removal ONLY and not meant for installation.
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Old 11-23-18, 09:00 PM   #9
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Default Re: Proper tools to remove crank/cam sprockets

I used the grimmspeed crank pulley tool and it works fine.

As for the cambolts I recently watched a well known Subaru build shop use an cheap mig welder to zap the cam bolt out in 2 minutes

Subaru Cam Bolt Removal by Outfront Motorsports Inc. - YouTube

Last edited by blacknblue06STI; 11-23-18 at 09:06 PM.
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