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Old 08-06-2017, 05:25 AM   #1
whiterabbitrexy
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Default all vaccum lines on v5-v6 wrx

so i really really need to find this boost leak .... its pissing me off so bad its not funny
... and i will be doing all my vaccum lines on the wrx...question is where is all my vaccum lines ? i know there is vaccum lines on turbo commpressor nipple to internal wastegate... lines from manifold to bcs.... and a vaccum line on my fpr ?tb nipple there is another there....brake booster line is good it dont need to change it.... is there any more ?

car is a v5 1998 imprezza wrx gf8 ej20k or g still confused a little on that

also can i use all the same vaccum lines here where i have stated is vaccum lines ? or will some need some diffrent size ?
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Old 08-06-2017, 04:29 PM   #2
Whopper
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I cant tell you location of all of them but on my friends ej20g it needed different sizes. And If the engine isnt a stock engine than probably the only way to tell if its a 20g or 20k is to look at the deck and see if its semi closed or fully closed.
Sorry Im not much help.
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Old 08-06-2017, 08:21 PM   #3
whiterabbitrexy
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Quote:
Originally Posted by Whopper View Post
I cant tell you location of all of them but on my friends ej20g it needed different sizes. And If the engine isnt a stock engine than probably the only way to tell if its a 20g or 20k is to look at the deck and see if its semi closed or fully closed.
Sorry Im not much help.
every little bit of info helps bro thanks heaps man ..... seems ive 100% got an early phase 1 ej20g not a k the k was always a closed deck like u said... thanks heaps bro.... ill have to pull my vacumm lines off and check in internal thickness of each one .....oh boy what a pain lol thanks again bros your a legend man
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Old 08-07-2017, 02:43 AM   #4
suberdave
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sorry to tell you but EJ20k's were not closed deck or semi closed deck. most V1-V6 were open deck and some V1-V2 EJ20Gs were closed.

you dont need to pull the heads to find out. just look at the hump for the starter. this will tell you. if it has ridges on it its closed deck. if its smooth its open.



as for the engine, unless someone swapped the engine, a 1998 V5 WRX should be an early open deck EJ207.

Message me with you email address and ill send you some information on the 97-98 Impreza that includes all the wiring and vacuum diagrams.

As for finding a boost leak, your best bet is to get your hands on a smoke machine. or take it to someone that has one. will make finding a leak easy as pie.

-=Suberdave=-
www.suberdave.com

Last edited by suberdave; 08-07-2017 at 06:32 PM. Reason: correction from elislider
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Old 08-07-2017, 02:09 PM   #5
elislider
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^ Dave, you're close but not really
v3/4 were called EJ20G or EJ20K and v5/6 are EJ205 or EJ207 depending on WRX or STi trim (and which WRX among those)

none of the EJ20K were closed deck, all v3-6 models were open deck.
none of the v1-6 were semi closed, that started with v7 (bugeye STi EJ207)
only some of the v1/2 EJ20G were closed deck, usually externally indicated by the ribs on the starter bump or on the top of the case halves

anyways back to OP's question, you should really do a smoke test or you could get the car idling and then spray tiny squirts of brake/carb cleaner around the engine bay at all the lines/hoses/connections to see if you observe any change in idle, that usually means you have a leak.
"1998" could be v4 or v5 depending... but v5/6 are similar to each other and v3/4 are similar to each other.
OP you should post a picture of your engine bay

Here are some engine bay shots of the v5/6 WRX/STi EJ205/EJ207 if that helps:
http://www.powerlabs.org/images/swapbay.jpg
http://www.suberdave.com/USMB/EJ207%...wap%20(26).JPG
http://i46.tinypic.com/72bmeg.jpg
http://www.powerlabs.org/images/carengine.jpg
https://farm8.static.flickr.com/7607...e9963f3c_b.jpg
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Old 08-08-2017, 11:21 AM   #6
i10scooby
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In your previous posts you said it was a (V3/V4) EJ20K? Can you confirm the model and get back to us?

If it is an EJ20K, I found the service manual which has some really helpful vacuum diagrams. I will post it when I go to work, as it is saved on my work computer.

Check out this thread, it is very helpful too:

http://www.rs25.com/forums/f128/t157...oid-setup.html

So I can't upload the document, but here are all the diagrams from the service manual showing the vacuum and evap system:












Last edited by i10scooby; 08-09-2017 at 03:23 AM.
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Old 08-09-2017, 01:43 AM   #7
binny
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He's in Australia it will be a V4 EJ20K (open deck shim over bucket TD04) unless the build date is after September then it's a V5 (coil pack off centre)
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Old 08-09-2017, 09:57 AM   #8
whiterabbitrexy
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thanks for all the help guys .... wow you guys are champions not only do i bave a better understanding of my vaccum setup a bit better i finally know what engine i have thanks to Binny again ..... i would love to do a smoke leak test but know ones got one and i bought party smoke machine test and tried to plumb up a basic system but failed....

would love to spray carb cleaner on hoses but my idle somtimes dosnt stay steddy and i have herd carb cleaner can damage brake down rubber hoses so i was thinking maybe stay away from it ...

not sure how to upload pics.... but here is a video of my engine bay ....

https://forums.nasioc.com/forums/sho....php?t=2842314

thanks for helping too elislider
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