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Old 02-07-2010, 01:52 PM   #51
JDMFLCL
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kind of

I think a better example would be a dam with water
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Old 02-07-2010, 02:01 PM   #52
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Originally Posted by JDMFLCL View Post
kind of

I think a better example would be a dam with water
A water dam will not show how it works. There is nothing being taken out of the water going through a dam, the water is just getting redirected. In the bus scenario, the bus is the air and the children are the oil droplets. The children(oil droplets) are removed from the bus(air) when the bus(air) has to take wicked turns.
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Old 02-07-2010, 02:10 PM   #53
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Bus works, just kind of is a bit macabre
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Old 02-07-2010, 03:14 PM   #54
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Default Re: Grimmspeed AOS review

Installed mine today on a 2007 STi and it was pretty smooth. Had to make a few modifications to the installation instructions which I will share here:

1) I had to bend the oil dipstick out of the way as it would not clear the AOS in the stock location. Grab it and pull it toward the front of the car until it will clear.

2) The supplied hose is too small to fit over the nipple at the PCV. I adapted from the supplied hose to a bit larger piece using the same kind of adapter that they supplied.

3) The supplied cap for the nipple at the PCV entrance to the intake tube is too long. I trimmed it about 1/2".

4) It's much easier to do the job with the intercooler off so while it's off fill it about 1/4 full of unleaded gasoline and slosh it about to clean off the oily residue. Drain well and use all the normal precautions you would with gasoline.

5) Fitting the center cap of the AOS is a bit tricky with the hoses attached. Be careful not to cross thread.

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Old 02-07-2010, 03:16 PM   #55
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Even though I've seen video of the Grimmspeed guys' driving abilities, I'd never let them drive my kids schoolbus
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Old 02-08-2010, 08:25 PM   #56
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Quote:
Originally Posted by GrimmSpeed View Post
Exactly. Here is another way of thinking of it....

A school bus is traveling down a highway and its in a big long tunnel(a very curvy tunnel). Instead of kids in the bus, there is floating oil droplets and all of the bus windows are open. Now imagine the bus is traveling at 80mph through this tunnel and it has amazing race suspension and all of the sudden the bus has to make a 90 degree turn(lets imagine it takes the turn perfectly)...BAM, many of the floating oil droplets fly out of the windows and hit the inside of the tunnel wall. Then in a very short amount of time the bus takes another 90 degree turn and more oil droplets come flying out of the bus and hit the walls of the tunnel. Repeat these 90 degree turns 5-7 times(this is how many 90 degree turns our AOS has).

As you can see, it will be very hard for any remaining oil droplets, or children, to stay in the bus.

Does the school bus example make sense?
that was awesome! me and a few others i see are still waiting pictures on 08+ wrx's and i think a guy said LGT. they just dont look as easy as the sti's people are giving pics for.
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Old 02-08-2010, 10:37 PM   #57
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Quote:
Originally Posted by GrimmSpeed View Post
Exactly. Here is another way of thinking of it....

A school bus is traveling down a highway and its in a big long tunnel(a very curvy tunnel). Instead of kids in the bus, there is floating oil droplets and all of the bus windows are open. Now imagine the bus is traveling at 80mph through this tunnel and it has amazing race suspension and all of the sudden the bus has to make a 90 degree turn(lets imagine it takes the turn perfectly)...BAM, many of the floating oil droplets fly out of the windows and hit the inside of the tunnel wall. Then in a very short amount of time the bus takes another 90 degree turn and more oil droplets come flying out of the bus and hit the walls of the tunnel. Repeat these 90 degree turns 5-7 times(this is how many 90 degree turns our AOS has).

As you can see, it will be very hard for any remaining oil droplets, or children, to stay in the bus.

Does the school bus example make sense?
that is one hell of an example. hahaha. so many different/strange images that went through my head as I was reading this (Bus racing through a tunnel handling like a mofo, kids inside that turn into oil droplets and getting smashed into the tunnel walls). that's great. makes sense though, I think. hahah

Last edited by boogieboogz; 02-09-2010 at 11:45 AM.
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Old 02-08-2010, 10:49 PM   #58
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Quote:
Originally Posted by GrimmSpeed View Post
Exactly. Here is another way of thinking of it....

A school bus is traveling down a highway and its in a big long tunnel(a very curvy tunnel). Instead of kids in the bus, there is floating oil droplets and all of the bus windows are open. Now imagine the bus is traveling at 80mph through this tunnel and it has amazing race suspension and all of the sudden the bus has to make a 90 degree turn(lets imagine it takes the turn perfectly)...BAM, many of the floating oil droplets fly out of the windows and hit the inside of the tunnel wall. Then in a very short amount of time the bus takes another 90 degree turn and more oil droplets come flying out of the bus and hit the walls of the tunnel. Repeat these 90 degree turns 5-7 times(this is how many 90 degree turns our AOS has).

As you can see, it will be very hard for any remaining oil droplets, or children, to stay in the bus.

Does the school bus example make sense?
Makes sense to me, and I'm not mechanically inclined hah.
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Old 02-09-2010, 01:13 PM   #59
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I am already using a Crawford AOS...can you comment about using this setup *after* a non-PCV'd AOS for a second defense?

I am considering running the outlet of the can to the inlet of the GS-AOS, capping the second GS-AOS inlet then running the G-AOS outlet to intake. Thoughts?
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Old 02-10-2010, 12:51 AM   #60
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It'd be nice if the mods cleaned up the off-topic posts in this thread but here is a pic of it installed on my '08. Thankfully, the '08's have much greater separation between the filler neck and dipstick. I'll be monitoring the oil and any condensation/sludge over the next couple months. It's pretty damn cold here still (-6C right now), so it should provide a nice test bed.



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Old 02-14-2010, 12:23 PM   #61
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why can no one install on a 08+ wrx?
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Old 02-15-2010, 07:40 PM   #62
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Originally Posted by lancelucas View Post
I am already using a Crawford AOS...can you comment about using this setup *after* a non-PCV'd AOS for a second defense?

I am considering running the outlet of the can to the inlet of the GS-AOS, capping the second GS-AOS inlet then running the G-AOS outlet to intake. Thoughts?

I wouldn't bother running the two together. Using both will take away the benefits of using ours alone.

Mike
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Old 02-15-2010, 08:20 PM   #63
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Originally Posted by GrimmSpeed View Post
I wouldn't bother running the two together. Using both will take away the benefits of using ours alone.

Mike
Thank you for the reply! I'll continue using my well-functioning Crawford Air/Oil Separator only and will spend elsewhere.
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Old 02-15-2010, 11:55 PM   #64
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why can no one install on a 08+ wrx?
wouldnt it be the same as the 08 sti above?
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Old 02-17-2010, 04:51 PM   #65
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bump this! still waiting on mine to be shipped!
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Old 02-17-2010, 07:13 PM   #66
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has anyone installed this with an APS hard inlet?
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Old 02-18-2010, 06:09 PM   #67
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Just install the aos today, have one slight problem. The hose supplied seemed to small for the pcv port, I was only able to get about half inch of the hose onto the pcb port.
Were you guys able to get the hose on all the way or how did do this?

Thanks
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Old 02-18-2010, 07:36 PM   #68
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We haven't had any issues as of yet. Was the hose too short or was the ID not large enough? This was on your 06 sti?

Mike
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Old 02-18-2010, 07:43 PM   #69
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^I think the ID was too small, but im going to do the same thing this guy did just to be safe.
Thanks for the reply.
Quote:
Originally Posted by SonicWRX View Post
2) The supplied hose is too small to fit over the nipple at the PCV. I adapted from the supplied hose to a bit larger piece using the same kind of adapter that they supplied.
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Old 02-19-2010, 11:27 PM   #70
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wouldnt it be the same as the 08 sti above?
you have an 08+wrx, what do you think?
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Old 02-20-2010, 04:32 AM   #71
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Yea...the hose itself is beefy. Too beefy actually for the pcv connection. The ID of the hose is too small. I had to strecth the hose and kind of get it in because it was too late for to find another hose.
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Old 02-20-2010, 04:49 AM   #72
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I decided to take a look at the intake hose on the GS AOS after 1000-1200km. Snapped a few pics:












The intake hose looks clean and dry for the most part. I did notice slight dampness near the end of the stock hose that goes from the intake tract nipple to the plastic coupler. This might have been there from before when the car didn't have an air/oil separator or it might just be water.
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Old 02-20-2010, 04:53 AM   #73
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Quote:
Originally Posted by GrimmSpeed View Post
We haven't had any issues as of yet. Was the hose too short or was the ID not large enough? This was on your 06 sti?

Mike
The ID of the hose that connects to the top of the PCV tee is too small. I basically took needlenose pliers, put them in the hose and opened them to stretch the hose as much as I could. After doing this, I put a tiny bit of oil on the PCV tee and forced the hose onto it. Took quite a bit of effort but it's on fully, though probably never coming off.
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Old 02-20-2010, 01:08 PM   #74
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Quote:
Originally Posted by Digitalfiend View Post
I decided to take a look at the intake hose on the GS AOS after 1000-1200km. Snapped a few pics:












The intake hose looks clean and dry for the most part. I did notice slight dampness near the end of the stock hose that goes from the intake tract nipple to the plastic coupler. This might have been there from before when the car didn't have an air/oil separator or it might just be water.

Looks great! I see that you in are Canada too so i'm assuming you have been using it in very cold temperatures?

Justin
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Old 02-20-2010, 02:56 PM   #75
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Quote:
Originally Posted by GrimmSpeed View Post
Looks great! I see that you in are Canada too so i'm assuming you have been using it in very cold temperatures?

Justin
Yep. We had a few -12C (ambient) days and the car was driven on those days, so yeah, it definitely seems to be working.
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