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Jhammer
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 Posted: Tue May 20, 2008 5:36 pm |
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Joined: Mon May 23, 2005 11:25 am
Posts: 605
Location: Waukesha. WI
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so, I pressure tested the car, and yes, I have a boost leak, guess where?!
the o-ring on the rear turbo!! I #$%^& hate that thing!
_________________
1993 3000GT VR-4 (build in progress)
1994 3000GT SL
Lead, Follow, or get out of my way!
Also know as:
"dead weight", "wrong wheel drive noob"
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ver fer
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Posted: Tue May 20, 2008 9:57 pm |
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Joined: Sun Aug 17, 2003 2:04 pm
Posts: 767
Location: Oshkosh
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Somehow I new it would be there.
IT makes me like my 13T's even more ever time I here someones O-ring leaks.
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'94 vr4- Now with extra slowness
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i3ivix17
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Posted: Tue May 20, 2008 11:48 pm |
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Joined: Wed Sep 03, 2003 8:45 pm
Posts: 396
Location: Sheboygan Wisconsin
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i know i have a few of those rings laying around. IF you need one let me know. (:
_________________
1994 Stealth R/T TT Pearl Yellow
-Out since June 05'
-Almost ready for start up
1991 Stealth R/T Red
-Out for 7 weeks with a spun bearing
-Came back to life on 8/04/07
-Blew the motor again on 11/25/07
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unclebenny
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Posted: Wed May 21, 2008 12:20 am |
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Joined: Wed Oct 08, 2003 3:27 am
Posts: 934
Location: Oconomowoc WI
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Vac leak vac smeak. Who need's boost anyhow? I run my sh1t w/o wheels more often than not. Actually half my car is lying on the garage floor again. Perfect time for a part out.  _________________ 
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SJ
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Posted: Wed May 21, 2008 6:21 am |
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Joined: Sun Mar 06, 2005 9:48 pm
Posts: 2973
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Bunk
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Posted: Wed May 21, 2008 7:42 am |
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Joined: Mon Aug 22, 2005 4:02 pm
Posts: 316
Location: Kingsford, Mi/ WI border town
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I did what Adam mentioned and just took my pipe to our local hardware store and sized a few up. It was dirt cheap and has worked great and I did that a couple of years ago.
I know I have a slight leak at the throttle body gasket and just got one in the mail. So I will be pressure testing this weekend also. Right now I will assume that after a couple of years I will have the rear turbo O-ring leak again.
Kyle
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93 3000 GT VR4
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Jhammer
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Posted: Fri May 23, 2008 2:53 pm |
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Joined: Mon May 23, 2005 11:25 am
Posts: 605
Location: Waukesha. WI
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well, I replaced the rear turbo O-ring and hooked up the air compressor again. No more leak out of the rear turbo, but now I have a huge leak out the oil cap! *sigh* so now I have to stop that leak and see what happens after that.
_________________
1993 3000GT VR-4 (build in progress)
1994 3000GT SL
Lead, Follow, or get out of my way!
Also know as:
"dead weight", "wrong wheel drive noob"
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Bunk
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Posted: Fri May 23, 2008 3:57 pm |
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Joined: Mon Aug 22, 2005 4:02 pm
Posts: 316
Location: Kingsford, Mi/ WI border town
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Sounds like someone forgot to pull and plug one hose before pressure testing. I can't remember what it runs to but I remember Adam making a point to show me. I just remember it's location. Otherwise you put pressure to your front valve cover.
Kyle
_________________
93 3000 GT VR4
Last edited by Bunk on Fri May 23, 2008 4:47 pm, edited 1 time in total.
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Jhammer
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Posted: Fri May 23, 2008 4:03 pm |
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Joined: Mon May 23, 2005 11:25 am
Posts: 605
Location: Waukesha. WI
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you pull the PCV hose?!! really?
_________________
1993 3000GT VR-4 (build in progress)
1994 3000GT SL
Lead, Follow, or get out of my way!
Also know as:
"dead weight", "wrong wheel drive noob"
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ttangel
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Posted: Fri May 23, 2008 7:54 pm |
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Joined: Fri Jul 23, 2004 2:25 pm
Posts: 2502
Location: Green Bay
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Jhammer wrote: you pull the PCV hose?!! really? yes. That PCV is plumbed to before the intake of the turbo. thus it never sees boost, only vacuum. Welcome to the wonderful world of forced induction padawan. Now you actually have to think about your vacuum lines for a minute or two...  I usually jam an old tube of RTV in the hose and nylon tie it so that I don't shoot it out. EDIT: Also, big guy if that o-ring was enough of a leak to keep you completely out of boost... I don't know what to say here... I don't have words for the size of that leak... I think your problem is elsewhere... Are all the bolts on the plenum tight? i did that once... and only once. that was an Epic noise. wastegates hooked up and working? you can test them with compressed air. (obviously) massive exhaust leak pre-turbo? that's about all I can think of unless your tune is completely and utterly horrid. (and yes, I'm saying worse then mine... pfft... too rich... yeah right.)
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Bad decisions make good stories.
Look at it! LOOK AT MY @SS AND TELL ME IT'S PRETTY!
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curt_gendron
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Posted: Sat May 24, 2008 7:38 am |
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Joined: Wed Aug 13, 2003 8:45 am
Posts: 919
Location: Minnesota
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Jhammer wrote: you pull the PCV hose?!! really? Yep. I stick the business end of my Thaiwan made 3/8s ratchet in the PCV tube. Fits perfect. So pull the tube off the PCV and leave the other end in the intake tube. Stick something in the open end of the tube. I agree with Adam. Your issue is probably more than a boost leak. But get the boost leaks taken care of first. Since you are only seeing 1psi of boost, I don't think its your boost controller. Because you'd still see at least wastegate pressure of 6-7psi with a malfunctioning boost controller. So next I'd suspect your wastegates not functioning right. later, Curt _________________  Minnesota 3/S message board: http://forums.mn3s.org/Minnesota 3/S Facebook group: https://www.facebook.com/groups/Minnesota.3S/
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