02 WRX Vacuum/Coolant Hose Install Guide - Page 3

CarmelValleyWRX · 12-30-2017, 03:13 PM

i have the mishimoto hose kit. it works ok. but in reality im probably going to just buy some 5/16 silicone heater hose for my coolant lines and use regular silicone line for breathers when i figure out a catch can situation. the mishimoto coolant lines going to the radiator dont fit that well. i was only able to use one of the coolant lines from the plastic tank to the turbo. the lower one did not fit. i deleted my GBOd so the valve cover breather hoses are not really practical to use anymore... the hose kit is good for a stock car but if you are modding and going to be changing things just use generic hose. no matter what dont spend $300 on hoses.

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eyekyu · 01-08-2018, 08:41 PM

how did you get the restrictor pill out/in ?

Valarius Starchaser · 01-08-2018, 11:17 PM

Quote:

Originally Posted by eyekyu

how did you get the restrictor pill out/in ?

cut the old hose make sure you reinstall it in the correct direction so it blocks air from leaving the booster then just dip it in some soap and water and jamb it in with a screwdriver or warm the hose itself by boiling it and then stab the pill in

eyekyu · 01-09-2018, 09:27 AM

Quote:

Originally Posted by Valarius Starchaser

cut the old hose make sure you reinstall it in the correct direction so it blocks air from leaving the booster then just dip it in some soap and water and jamb it in with a screwdriver or warm the hose itself by boiling it and then stab the pill in

Thanks, didn't know it was directional. Either way got the longer side closes to the turbo

Valarius Starchaser · 01-09-2018, 03:06 PM

Quote:

Originally Posted by eyekyu

Thanks, didn't know it was directional. Either way got the longer side closes to the turbo

Not sure about the restrictor pill for the wastegate I deleted that and run a grimmspeed EBCS I was referring to the valve/checkball pill from the intake manifold to the brake booster

pinci · 01-09-2018, 07:40 PM

Anyone have the part #'s for the OEM hoses for Y, V, and C listed in this tutorial? Having trouble finding them.

oaklandish_WRX · 01-12-2018, 11:33 PM

Quote:

Originally Posted by pinci

Anyone have the part #'s for the OEM hoses for Y, V, and C listed in this tutorial? Having trouble finding them.

Opposedforces.com is your friend

fleezy · 01-13-2018, 12:09 PM

are these hoses entirely replaced by the MISHIMOTO ancillary hose kit (https://www.tdotperformance.ca/mishi...EaAhTfEALw_wcB), or would I need more?

danwait · 02-01-2018, 01:09 AM

Quote:

Originally Posted by fleezy

are these hoses entirely replaced by the MISHIMOTO ancillary hose kit (https://www.tdotperformance.ca/mishi...EaAhTfEALw_wcB), or would I need more?

No; the kit itself doesn't list which hoses it can replace, but if you throw "2003 subaru mishimoto hose install" into a search engine, there's a youtube posted Feb 15, 2012 by Mishimoto Automotive that shows you where each of the hoses in the kit go.

IIRC it's all the hoses off the coolant tank reservoir- Hoses A, C, H, I (though I couldn't get the short 90 degree underneath to fit, and the two long ones to the radiator need different than stock hose clamps), plus the three to the IC hoses (B, D, and G). Hose U and... one I'm forgetting.

Hope that helps.

lakehaze · 02-26-2018, 09:18 AM

Thanks for the write-up and pics. Very helpful.

That 14mm breather hose mentioned in the beginning along with hoses E and X: I got it out no problem without futzing with the turbo. Mine was rock solid, and came out in about 30 pieces but should be easy if still rubber. All three hoses (14mm, E, X) and the junction fitting come as an assembly from Subaru for $38.

I opted against the silicone kit, but this guide was instrumental in checking each line and finally eliminating my persistent vacuum/?/boost leak.

Thanks again.

Tycinn · 04-26-2018, 09:33 PM

This post is perfect. I'm finishing up and engine swap and didn't take pics of all the hoses so I had a little trouble remembering the hose paths. This clearly laid it all out for me. made my life way easier.

Thanks a lot man!

oc2md · 08-09-2018, 07:18 PM

Maybe it's obvious but how do you get the restrictor pill inside of the tubing? I just ordered the same hose kit as you suggested and they look awesome. Can't wait to put them in this weekend.

sbragato · 10-28-2018, 08:56 AM

hi, on my impreza wrx 2005 there is an manual boost regulator, i want remove it and make it original, but i dont know the size of hoses and connectors.

someone says they need 3mm tubes, others 3.5mm ... 4mm is right?

thanks

pocketofthomas · 12-07-2018, 06:01 PM

Howdy, I was wondering if anyone could explain where does this hose hook up to? We can't find the other end and it has the same type of clamp as the rubber fuel lines. It came out suprisingly when we were removing the intake manifold but we can't seem to find any place that it came from. The clamp was very tight as well when it just came off.

https://i43.servimg.com/u/f43/18/81/28/53/wrx_ho11.jpg

pocketofthomas · 12-14-2018, 03:09 AM

We put the intake manifold and connected all the hoses and vacuum lines except for that one I mentioned in my previous post.

Not sure if it's related or not but, car idles fine and runs fine, however, when i'm at 3000rpm and push the gas in, the RPM's shoot up immediately but I don't feel the same reaction at the wheels, then the rpm levels out to the same speed the tranny is in and then it goes.

Could this be related? Could my clutch be a senior citizen? Or could it be the BOV which I got for free and just stuck on there for fun.

No check engine light or anything else that I can think of and I would appreciate if someone could shine some light on this? Thanks!

CarmelValleyWRX · 12-14-2018, 01:05 PM

sounds like a problem in the clutch or somewhere in the drivetrain.

pocketofthomas · 03-26-2019, 07:04 AM

Yes, the clutch was toast, put a new kit in and it works great.

However, still not sure what that hose was but no issues since placing all of the vacuum lines in after doing the annoying leaking fuel line fix that required us to remove the entire intake manifold + hoses.

If anyone figures out what that hose is, feel free to let me know please : )

russellh68 · 03-28-2019, 04:54 PM

Quote:

Originally Posted by pocketofthomas

Yes, the clutch was toast, put a new kit in and it works great.

However, still not sure what that hose was but no issues since placing all of the vacuum lines in after doing the annoying leaking fuel line fix that required us to remove the entire intake manifold + hoses.

If anyone figures out what that hose is, feel free to let me know please : )

The hose that you highlighted in green looks like the infamous hose to nowhere that has been referenced here. I just went thru the same thing, not knowing where to connect this but it turns out it doesn't connect to anything... There is one on each side of the engine.

Whit3Shadow42 · 04-11-2019, 03:19 PM

Ordered my set today! So excited to replace everything on this old girl! 02 WRX Wagon

Rigid80sMTB · 04-29-2019, 12:23 AM

Anybody know what this is called or where to get one? It broke in half causing a vacuum leak, I just superglued it for the pic. Tried looking up vacuum line fittings and none looked like it.

Rigid80sMTB · 04-29-2019, 02:57 PM

Quote:

Originally Posted by Rigid80sMTB

Anybody know what this is called or where to get one? It broke in half causing a vacuum leak, I just superglued it for the pic. Tried looking up vacuum line fittings and none looked like it.

Found it, it's part of the vacuum hose assembly 22310AC241. Tired of having to buy whole assemblies because of one little broken piece.

SIMPFLY · 05-14-2019, 06:32 PM

Thank you!!

found a small leak in the turbo<>engine block coolant hose (see pic). Replaced it while i was replacing all the other hoses on my 04 wrx using this thread.

If you have a mysterious coolant leak on the passenger side/turbo side, check this hose.

fleezy · 06-03-2019, 11:54 PM

what from the table was not included in the kit?

02WRX84 · 07-23-2019, 10:55 AM

Great write up man! Great stuff! Where does the hose just below the IACV and to the right of it go?

I’m looking around and notice that there isn’t a hose connected there or on the throttle body under the inter cooler. I’m thinking the hose popped off and that they should have a hose connected to each other. What do you guys think?

02WRX84 · 07-23-2019, 10:55 AM

Great write up man! Great stuff! Where does the hose just below the IACV and to the right of it go?

I’m looking around and notice that there isn’t a hose connected there or on the throttle body under the inter cooler. I’m thinking the hose popped off and that they should have a hose connected to each other. What do you guys think?

04-26-2018, 09:33 PM	#61
Tycinn Scooby Newbie Member#: 466175 Join Date: Apr 2017	The usefulness This post is perfect. I'm finishing up and engine swap and didn't take pics of all the hoses so I had a little trouble remembering the hose paths. This clearly laid it all out for me. made my life way easier. Thanks a lot man!

12-07-2018, 06:01 PM	#64
pocketofthomas Scooby Newbie Member#: 234335 Join Date: Jan 2010 Chapter/Region: NWIC Location: Kent (Brno, CZ) Vehicle: 2002 Impreza WRX Aspen White	What is this hose? Howdy, I was wondering if anyone could explain where does this hose hook up to? We can't find the other end and it has the same type of clamp as the rubber fuel lines. It came out suprisingly when we were removing the intake manifold but we can't seem to find any place that it came from. The clamp was very tight as well when it just came off. https://i43.servimg.com/u/f43/18/81/28/53/wrx_ho11.jpg

05-14-2019, 06:32 PM	#72
SIMPFLY Scooby Specialist Member#: 54794 Join Date: Feb 2004 Location: Bay Area Vehicle: 2004 WRX in the Barn 2018 Porsche 911	Thank you!! found a small leak in the turbo<>engine block coolant hose (see pic). Replaced it while i was replacing all the other hoses on my 04 wrx using this thread. If you have a mysterious coolant leak on the passenger side/turbo side, check this hose. Last edited by SIMPFLY; 05-14-2019 at 06:45 PM.

06-03-2019, 11:54 PM	#73
fleezy Scooby Newbie Member#: 436768 Join Date: Dec 2015 Chapter/Region: E. Canada Location: Toronto Vehicle: 2004 WRX Silver	what from the table was not included in the kit? Last edited by fleezy; 06-04-2019 at 02:38 AM. Reason: things

07-23-2019, 10:55 AM	#75
02WRX84 Scooby Newbie Member#: 504001 Join Date: Jul 2019	Hose Problem! Great write up man! Great stuff! Where does the hose just below the IACV and to the right of it go? I’m looking around and notice that there isn’t a hose connected there or on the throttle body under the inter cooler. I’m thinking the hose popped off and that they should have a hose connected to each other. What do you guys think?

12-30-2017, 03:13 PM	#51
CarmelValleyWRX Scooby Specialist Member#: 453872 Join Date: Sep 2016 Vehicle: 2005 wrx wagon 48w	i have the mishimoto hose kit. it works ok. but in reality im probably going to just buy some 5/16 silicone heater hose for my coolant lines and use regular silicone line for breathers when i figure out a catch can situation. the mishimoto coolant lines going to the radiator dont fit that well. i was only able to use one of the coolant lines from the plastic tank to the turbo. the lower one did not fit. i deleted my GBOd so the valve cover breather hoses are not really practical to use anymore... the hose kit is good for a stock car but if you are modding and going to be changing things just use generic hose. no matter what dont spend $300 on hoses. * Registered users of the site do not see these ads.

01-08-2018, 08:41 PM	#52
eyekyu Scooby Newbie Member#: 183670 Join Date: Jul 2008 Chapter/Region: SWIC Location: Reno Vehicle: 2002 Bugeye PSM	how did you get the restrictor pill out/in ?

01-09-2018, 07:40 PM	#56
pinci Scooby Newbie Member#: 444130 Join Date: Apr 2016 Location: Orange County Vehicle: 2002 Impreza WRX Midnight Black Pearl	Anyone have the part #'s for the OEM hoses for Y, V, and C listed in this tutorial? Having trouble finding them.

01-13-2018, 12:09 PM	#58
fleezy Scooby Newbie Member#: 436768 Join Date: Dec 2015 Chapter/Region: E. Canada Location: Toronto Vehicle: 2004 WRX Silver	are these hoses entirely replaced by the MISHIMOTO ancillary hose kit (https://www.tdotperformance.ca/mishi...EaAhTfEALw_wcB), or would I need more?

02-26-2018, 09:18 AM	#60
lakehaze Scooby Newbie Member#: 462821 Join Date: Feb 2017	Thanks for the write-up and pics. Very helpful. That 14mm breather hose mentioned in the beginning along with hoses E and X: I got it out no problem without futzing with the turbo. Mine was rock solid, and came out in about 30 pieces but should be easy if still rubber. All three hoses (14mm, E, X) and the junction fitting come as an assembly from Subaru for $38. I opted against the silicone kit, but this guide was instrumental in checking each line and finally eliminating my persistent vacuum/?/boost leak. Thanks again.

08-09-2018, 07:18 PM	#62
oc2md Scooby Newbie Member#: 488800 Join Date: Jul 2018 Location: Maryland Vehicle: 2004 WRX Wagon Silver	Maybe it's obvious but how do you get the restrictor pill inside of the tubing? I just ordered the same hose kit as you suggested and they look awesome. Can't wait to put them in this weekend.

10-28-2018, 08:56 AM	#63
sbragato Scooby Newbie Member#: 493295 Join Date: Oct 2018	hi, on my impreza wrx 2005 there is an manual boost regulator, i want remove it and make it original, but i dont know the size of hoses and connectors. someone says they need 3mm tubes, others 3.5mm ... 4mm is right? thanks

12-14-2018, 03:09 AM	#65
pocketofthomas Scooby Newbie Member#: 234335 Join Date: Jan 2010 Chapter/Region: NWIC Location: Kent (Brno, CZ) Vehicle: 2002 Impreza WRX Aspen White	We put the intake manifold and connected all the hoses and vacuum lines except for that one I mentioned in my previous post. Not sure if it's related or not but, car idles fine and runs fine, however, when i'm at 3000rpm and push the gas in, the RPM's shoot up immediately but I don't feel the same reaction at the wheels, then the rpm levels out to the same speed the tranny is in and then it goes. Could this be related? Could my clutch be a senior citizen? Or could it be the BOV which I got for free and just stuck on there for fun. No check engine light or anything else that I can think of and I would appreciate if someone could shine some light on this? Thanks!

12-14-2018, 01:05 PM	#66
CarmelValleyWRX Scooby Specialist Member#: 453872 Join Date: Sep 2016 Vehicle: 2005 wrx wagon 48w	sounds like a problem in the clutch or somewhere in the drivetrain.

03-26-2019, 07:04 AM	#67
pocketofthomas Scooby Newbie Member#: 234335 Join Date: Jan 2010 Chapter/Region: NWIC Location: Kent (Brno, CZ) Vehicle: 2002 Impreza WRX Aspen White	Yes, the clutch was toast, put a new kit in and it works great. However, still not sure what that hose was but no issues since placing all of the vacuum lines in after doing the annoying leaking fuel line fix that required us to remove the entire intake manifold + hoses. If anyone figures out what that hose is, feel free to let me know please : )

04-11-2019, 03:19 PM	#69
Whit3Shadow42 Scooby Newbie Member#: 484561 Join Date: Apr 2018 Chapter/Region: Tri-State Location: Syracuse, NY Vehicle: 2002 WRX Wagon Silver	Ordered my set today! So excited to replace everything on this old girl! 02 WRX Wagon

04-29-2019, 12:23 AM	#70
Rigid80sMTB Scooby Newbie Member#: 474556 Join Date: Sep 2017 Chapter/Region: South East Location: Nashville, TN	Anybody know what this is called or where to get one? It broke in half causing a vacuum leak, I just superglued it for the pic. Tried looking up vacuum line fittings and none looked like it.

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