|
|
|
|
Thread Tools | Display Modes |
12-01-2012, 10:54 PM | #1 |
Scooby Newbie
Member#: 282972
Join Date: May 2011
Chapter/Region:
Tri-State
Location: New Jersey
Vehicle:2006 Sti cgm |
Crawford or Grimspeed AOS?
I understand what these products are supposed to do, but they are such different looking set ups with the same purpose which would be better? I have a 2011 STI custon stage 2 tune. Ive taken my IC off many times and i always have oil in it so i figured i should get one of these. whats your thoughts...
* Registered users of the site do not see these ads.
|
12-01-2012, 10:59 PM | #2 |
Scooby Guru
Member#: 255776
Join Date: Aug 2010
Chapter/Region:
MWSOC
Location: Laramie, WY
Vehicle:2010 LR WRX MPS powered. |
Well, one works fairly well, the other...Not so much.
|
12-01-2012, 11:05 PM | #3 |
Scooby Specialist
Member#: 233501
Join Date: Dec 2009
Chapter/Region:
MAIC
Location: Fairfax Va
Vehicle:07AD 337/335SAXWAGON 99 outback sport |
One collects the oil blow by (Crawford)the other one recirculates it to the intake/ back to the oil pan (GrimmSpeed)
GS aos have been know to allow oil to slosh back up into the intake tract on hard right turns. Crawford: awesome for track does what its supposed to. You have to empty it periodically though. GS: set it and forget it don't use it on the track, unless you like burning oil. I personally use the GS and have no problems with it, but I also do not track the car. It has definitely stopped all/most of the blow by making it to the tmic, and I only burn an 8th~16th of a qt per oil change (3750 mi) ~Evil |
12-01-2012, 11:10 PM | #4 | |
Scooby Specialist
Member#: 117980
Join Date: Jun 2006
Chapter/Region:
NESIC
Location: Rochester, NH
Vehicle:2005 sti wr blue |
Quote:
|
|
12-01-2012, 11:53 PM | #5 |
Big Ron
Super Moderator Member#: 18062
Join Date: Apr 2002
Chapter/Region:
MAIC
Location: I can save you a ton of cash
Vehicle:on car parts so PM me b4 j00 buy |
Don't get either and save all that money as I've been on this forum since 1865 and have a favorite quote:
My car exploded due to the lack of an oil catch can/air oil separator----nobody |
12-02-2012, 12:03 AM | #6 |
Scooby Guru
Member#: 255776
Join Date: Aug 2010
Chapter/Region:
MWSOC
Location: Laramie, WY
Vehicle:2010 LR WRX MPS powered. |
Unabomber, the same could be said for intakes, downpipes, or any mod really...It's not like it's a bad idea to get one. I do think that you can often spend that money elsewhere, but it's just a way to keep oil out of the intercooler and keep it more efficient.
|
12-02-2012, 08:39 AM | #7 |
Scooby Specialist
Member#: 136314
Join Date: Jan 2007
Location: A$$achusetts
Vehicle:2014 Grand Cherokee |
^ +1
Who said anything about AOS keeping your car from exploding? A mod is only worth it if it keeps the car from blowing up? Every turbocharged subaru I've owned without AOS had oil in the intercooler...the intercooler in my current 2012 STI with a GS AOS is bone dry, which makes it more efficient. |
12-02-2012, 09:26 AM | #8 | |
Scooby Newbie
Member#: 282972
Join Date: May 2011
Chapter/Region:
Tri-State
Location: New Jersey
Vehicle:2006 Sti cgm |
Quote:
Only track would be the 1/4 mile. thanks |
|
12-02-2012, 09:27 AM | #9 |
Scooby Newbie
Member#: 282972
Join Date: May 2011
Chapter/Region:
Tri-State
Location: New Jersey
Vehicle:2006 Sti cgm |
Yeah it seemed like the crawford would be more work to take car of. Well if i buy one ill most likely get the GS. thanks guys
|
12-02-2012, 09:28 AM | #10 | |
Scooby Newbie
Member#: 282972
Join Date: May 2011
Chapter/Region:
Tri-State
Location: New Jersey
Vehicle:2006 Sti cgm |
Quote:
You had a lot of oil in the IC? i get a pretty good amount sometimes |
|
12-02-2012, 09:35 AM | #11 |
Medium Frank
Moderator Member#: 140114
Join Date: Feb 2007
Chapter/Region:
MAIC
Location: Common Sense, VA
Vehicle:2020 Subaru Outback |
Oil in the intercooler is normal mind you.
|
12-02-2012, 09:46 AM | #12 |
Scooby Specialist
Member#: 136314
Join Date: Jan 2007
Location: A$$achusetts
Vehicle:2014 Grand Cherokee |
|
12-02-2012, 09:48 AM | #13 |
Scooby Newbie
Member#: 62985
Join Date: May 2004
Location: Normal, IL
Vehicle:2005 STi Platnium Silver |
|
12-02-2012, 11:30 AM | #14 |
Scooby Specialist
Member#: 330625
Join Date: Aug 2012
Chapter/Region:
NESIC
Location: MA
Vehicle:2006 WRX WRB |
|
12-02-2012, 12:53 PM | #15 | |
Scooby Specialist
Member#: 280572
Join Date: Apr 2011
Chapter/Region:
E. Canada
Location: southern ontario canada
Vehicle:2011 sti sedan plasma blue pearl |
Quote:
how do u figure the Crawford aos would be higher maintenance??? For every day use go with gs aos, if u r ever considering tracking or otherwise go with the Crawford aos especially if u live where u will be driving in the winter as they utilize your turbo coolant lines so condensation will not freeze up your vacuum lines. Do a search there is lots of info about people having issues with the gs aos. Gs makes good products but from what I've read I won't touch their aos. |
|
12-02-2012, 01:11 PM | #16 |
Scooby Specialist
Member#: 330625
Join Date: Aug 2012
Chapter/Region:
NESIC
Location: MA
Vehicle:2006 WRX WRB |
Whoa, reading the crawford aos description this sounds like one of the few mass market aos that are actually designed correctly. At the very least they make it sound like they did it right. I wont run a normal catch can draining back to the pan, I've run multiple manual drain ones and you get serious milk shake built up in there, crawfords sounds like it should mitigate that problem. At least they realize its a problem.
|
12-02-2012, 01:37 PM | #17 |
Scooby Specialist
Member#: 279525
Join Date: Apr 2011
Chapter/Region:
Tri-State
Location: QUEENS NY
Vehicle:06 Fxt |
Yea i currently have a grimmspeed aos. Its for sale if anyone wants it. I removed it after advice from a tuner. He says remove it asap. The milky residue left behind is not good at all. After the residue accumulates it mixes and u get half water half oil.. Not good at all
|
12-02-2012, 02:48 PM | #18 |
Scooby Guru
Member#: 255776
Join Date: Aug 2010
Chapter/Region:
MWSOC
Location: Laramie, WY
Vehicle:2010 LR WRX MPS powered. |
Leafy, the Crawford one really is about the only one. That's why I'm getting one for my built engine...But that's different than on a stock motor.
|
12-02-2012, 04:20 PM | #19 |
Scooby Newbie
Member#: 337700
Join Date: Nov 2012
Location: Minnesota
Vehicle:2013 WRX Ice Silver Metallic |
Are there numbers out there showing the cooling differences of a TMIC w/ and w/o an AOS for everyday driving purposes?
I can understand the crawford piece in racing applications as you are constantly under boost and temps are always an issue but for DD? This question also applies to octane rating. I keep hearing about blow-by decreasing octane rating but I haven't seen any numbers. Are some of you guys running your cars at the level where even a fractional drop in octane or TMIC temps is going to be detrimental to your engines? Not poking here. I'm just asking honest questions. |
12-02-2012, 05:09 PM | #20 | |
Scooby Specialist
Member#: 280572
Join Date: Apr 2011
Chapter/Region:
E. Canada
Location: southern ontario canada
Vehicle:2011 sti sedan plasma blue pearl |
Quote:
|
|
12-02-2012, 05:58 PM | #21 |
Medium Frank
Moderator Member#: 140114
Join Date: Feb 2007
Chapter/Region:
MAIC
Location: Common Sense, VA
Vehicle:2020 Subaru Outback |
|
12-02-2012, 06:26 PM | #22 |
Scooby Guru
Member#: 255776
Join Date: Aug 2010
Chapter/Region:
MWSOC
Location: Laramie, WY
Vehicle:2010 LR WRX MPS powered. |
^^^Except in a front mount, it will collect and just sit...
OP probably doesn't have a front mount, but it's worth mentioning. |
12-02-2012, 07:31 PM | #23 |
Scooby Specialist
Member#: 330625
Join Date: Aug 2012
Chapter/Region:
NESIC
Location: MA
Vehicle:2006 WRX WRB |
If you cut your stock top mount open right now. Ever single surface of it will have a fine oil film. The if the thickness of the oil film was known and the heat transfer coefs of the oil were known you could easily do the math to see how much it reduces the efficiency by. Octane wise, we know the octane of the oil, we dont know what mass is in the air stream. And the ratio of the oil mass to the fuel mass in the intake charge will determine how much it lowers the octane by.
|
12-02-2012, 07:33 PM | #24 |
Scooby Specialist
Member#: 245242
Join Date: Apr 2010
Chapter/Region:
MWSOC
Vehicle:2005 STI E85 Power |
Crawford unit is better. Hands down.
|
12-02-2012, 08:32 PM | #25 |
Scooby Newbie
Member#: 278705
Join Date: Apr 2011
Chapter/Region:
E. Canada
Location: Toronto, Ontario, Canada
Vehicle:04 STi |
I've used both the GS and Crawford.
The GS didn't work for me (suspect it was related to the power I'm making, +400whp) I choose the Crawford because it was maintenance free, heated and came highly recommended. The Crawford is my choice, I can't recommend the GrimmSpeed. |
Thread Tools | |
Display Modes | |
|
|