Need some help here guys!
Thread Starter
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Elder User
Joined: Dec 2012
Posts: 841
Likes: 0
From: Monroe, MI
Need some help here guys!
I installed a USA ported housing about 2 weeks ago and lost some significant boost, went from 30 down to 22. great news is no surge and sounds awesome. but im on spring break and got a chance to take her back apart and retighten everything down and make sure the spyeder and turbo are aligned correctly and checked the o-rings. everything looked great! got it back together tightened everything down real good (everysingle IC clamp, exhaust clamp, turbo clamp) every clamp i could find got tightened till it felt good.
went for a ride and still 22 psi. . . what could possibly be causing this?
went for a ride and still 22 psi. . . what could possibly be causing this?
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I installed a USA ported housing about 2 weeks ago and lost some significant boost, went from 30 down to 22. great news is no surge and sounds awesome. but im on spring break and got a chance to take her back apart and retighten everything down and make sure the spyeder and turbo are aligned correctly and checked the o-rings. everything looked great! got it back together tightened everything down real good (everysingle IC clamp, exhaust clamp, turbo clamp) every clamp i could find got tightened till it felt good.
went for a ride and still 22 psi. . . what could possibly be causing this?
went for a ride and still 22 psi. . . what could possibly be causing this?
Thread Starter
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Elder User
Joined: Dec 2012
Posts: 841
Likes: 0
From: Monroe, MI
i mounted the old one and the red line is plugged in. I do have a boost fooler so i know that its not defueling.
Elder User
Joined: Jun 2007
Posts: 705
Likes: 1
From: Sandia Park, NM
You had to pop the "jesus clip" off the wastegate arm right? Is it possible the arm unscrewed thus making the wastegate vent earlier? I'm not sure how to check a stock wastegate, I had a buddy install a big head for me. Most folks pull the clip and screw the arm in a certain number of turns. A search will surely yield a writeup on it.
Thread Starter
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Elder User
Joined: Dec 2012
Posts: 841
Likes: 0
From: Monroe, MI
You had to pop the "jesus clip" off the wastegate arm right? Is it possible the arm unscrewed thus making the wastegate vent earlier? I'm not sure how to check a stock wastegate, I had a buddy install a big head for me. Most folks pull the clip and screw the arm in a certain number of turns. A search will surely yield a writeup on it.
im maybe thinking that the wastegate could be partially stuck open? if massh it i jump right to 17 psi and then itll climb to 22 at about 60-65 mph and then it wont go any higher even at 100mph. my egts are high as well if that makes any difference in finding what it might be.
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Because racetruck
Joined: Apr 2007
Posts: 2,786
Likes: 104
From: Monterey Bay, CA
Did you use new o-rings on the USA housing? I am referring both to the housing o-ring and the outlet o-ring.
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Thread Starter
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Elder User
Joined: Dec 2012
Posts: 841
Likes: 0
From: Monroe, MI
that i did not, i checked both and both looked in really good shape, i even put a little diesel oil on with my finger when i put the new housing on.
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Elder User
Joined: Dec 2012
Posts: 841
Likes: 0
From: Monroe, MI
okay, went for a quick ride to get a little more specific with this. normal acceleration to 45 i get 0-1 psi of boost maybe 2 and this is in my hot tune from beans, cruising at 45-55 its 0psi, 60-65 i start seeing 1psi and then 70-80 i see around 2/3psi. if i floor it, it goes right to 17-18 and then will climb to 21/22psi at about 75 mph with foot to the floor. this is with the new ported housing.
before housing: 45mph i would see around 2psi cruising, 55-75 i would see between 3-6psi, 7-9psi between 80-90 cruising. i would floor it and it would go to about 25 psi then climb to 30 and hold at 30. this was also in the hot tune and with the stock housing.
before housing: 45mph i would see around 2psi cruising, 55-75 i would see between 3-6psi, 7-9psi between 80-90 cruising. i would floor it and it would go to about 25 psi then climb to 30 and hold at 30. this was also in the hot tune and with the stock housing.
Cargo Master
Joined: Feb 2005
Posts: 2,837
Likes: 1
subscribing. I recently installed the same housing but also a van turbo at the same time. My boost numbers didn't really change much at all from my stock turbo with stock housing. Sorry I'm no help, I am just curious so I am subsrcibing.
Thread Starter
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Elder User
Joined: Dec 2012
Posts: 841
Likes: 0
From: Monroe, MI
its all good, at first i thought there might be a slight change but nowhere near 8 psi, i figured maybe 2 or 3 psi of difference.
Postmaster
Joined: Apr 2012
Posts: 2,613
Likes: 8
From: North Georgia
You gots a leak somewhere...
Im betting it IS your wastegate stuck slightly open.
To get it unstuck (the rod and the end) you could try a little used auto trans fluid on there.
That stuff is killer penetrating oil. Mix it 50/50 with acetone and its leages ahead of the best pen oil commercially available.
Im betting it IS your wastegate stuck slightly open.
To get it unstuck (the rod and the end) you could try a little used auto trans fluid on there.
That stuff is killer penetrating oil. Mix it 50/50 with acetone and its leages ahead of the best pen oil commercially available.
Thread Starter
|
Elder User
Joined: Dec 2012
Posts: 841
Likes: 0
From: Monroe, MI
You gots a leak somewhere...
Im betting it IS your wastegate stuck slightly open.
To get it unstuck (the rod and the end) you could try a little used auto trans fluid on there.
That stuff is killer penetrating oil. Mix it 50/50 with acetone and its leages ahead of the best pen oil commercially available.
Im betting it IS your wastegate stuck slightly open.
To get it unstuck (the rod and the end) you could try a little used auto trans fluid on there.
That stuff is killer penetrating oil. Mix it 50/50 with acetone and its leages ahead of the best pen oil commercially available.