|
01-04-2011, 02:33 PM | #55 |
Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
|
Got some news to share with potential Zage buyers...
I've had this itching suspicion regarding excessive oil pressure on cold start up that causes leakage out the turbos seals. I now know 100% what happened in my case. I was running a 1ZZ TB and on cold start up was getting oil pressure at atleast 100 psi (my gauge was maxing out). The service manuals say the oil pump should be operating between 20 and 80 psi, so I wanted to look into this further. My theory is that the greater airflow from the TB was being seen by the ECU and the ECU was turning up the oil pressure toooooo much (ONLY at cold start up. Arguably where the greatest oil pressure is needed). This is a sound theory because during normal driving conditions the oil pressure usually directly correlates to throttle position. I swapped my 1NZ TB back on and sure enough - cold start up hit about 82 psi and there was no smoking out the hot side of the turbo. Can't really say I've noticed a loss of performance either. In a nutshell, I think the Zage oil pan is safe to use. ... Now I just need to figure out why I can't hit max boost. |
01-04-2011, 04:02 PM | #56 |
ULTIMATE
Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
Posts: 14,859
|
^ That is all very good to know. And being able to make one change and record the difference is helpful.
What boost are you maxing out at and at what rpm? Got a video of you stomping on it to redline?
__________________
Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
01-04-2011, 05:02 PM | #57 | |
Bathroom + Laptop = <3
|
Quote:
|
|
01-04-2011, 10:30 PM | #58 |
Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
|
Haha, I know. I'm 100% sure this time though.
Anyways, even with my tru boost installed I'm only hitting about 6 psi around 4k RPMs. Boost seems to build quickly to about 5 psi by 3k then fall off. I don't know if this is how it's supposed to be or not because I've never been in any other turbocharged car. |
01-04-2011, 11:13 PM | #59 |
Drives: Yaris LB Turbo Join Date: Aug 2006
Location: Miami FL
Posts: 782
|
My theory is that the greater airflow from the TB was being seen by the ECU and the ECU was turning up the oil pressure toooooo much
The ECU has absolutely no control over oil pressure This is a sound theory because during normal driving conditions the oil pressure usually directly correlates to throttle position. Oil pressure correlates to RPM not TPS position I swapped my 1NZ TB back on and sure enough - cold start up hit about 82 psi and there was no smoking out the hot side of the turbo. Can't really say I've noticed a loss of performance either. Id say that with the 1ZZ TB the RPM @ cold start are higher than with the 1NZ TB, thats why you have more oil PSI |
01-05-2011, 12:00 AM | #60 |
ULTIMATE
Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
Posts: 14,859
|
^ You are saying that rpm alone accounts for cold start 82 psi and warm idle 20 psi or less?
__________________
Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
01-05-2011, 12:01 AM | #61 | |
ULTIMATE
Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
Posts: 14,859
|
Quote:
__________________
Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
|
01-05-2011, 10:32 AM | #62 | |
Drives: Yaris LB Turbo Join Date: Aug 2006
Location: Miami FL
Posts: 782
|
Quote:
And depending on the quality/brand of the oil you will have +/- oil pressure. |
|
01-05-2011, 01:38 PM | #63 | ||
Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
|
Quote:
Quote:
|
||
01-06-2011, 06:53 PM | #64 | |
Drives: 2008 Black Sedan Join Date: Oct 2008
Location: FL
Posts: 966
|
Quote:
|
|
01-07-2011, 01:57 AM | #65 |
Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
|
I really suspect I do have a boost leak and have had one since I installed the kit. Tomorrow I'm going to really comb over the induction system carefully. If nothing turns up, I'm gonna build a pressure tester. Also plan on hooking up a separate pressure gauge to the wastegate line and watching that.
There isn't really a better explanation for the problem I'm having. AFRs don't really indicate anything since I have complete control. One thing I did notice was significant richening at 5 psi or so while accelerating on the highway (i.e hits correct AFR for awhile, then goes richer than 10 after cruising for a bit). It's happened a couple times... |
01-07-2011, 02:02 PM | #66 | |
Drives: 2008 Black Sedan Join Date: Oct 2008
Location: FL
Posts: 966
|
Quote:
|
|
01-07-2011, 02:13 PM | #67 |
Bathroom + Laptop = <3
|
I don't get it? You do have a BOV right? Or does it recirc?
If it blows off into atmosphere it will cause a rich condition. When you decelerate I usually see it lean out. Still, boost leak testing should be done to any new build, and also as maintenance over time. |
01-07-2011, 03:42 PM | #68 |
ULTIMATE
Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
Posts: 14,859
|
BOV to atmosphere on the ZAGE kit
__________________
Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
01-07-2011, 06:10 PM | #69 | |
Drives: 2008 Black Sedan Join Date: Oct 2008
Location: FL
Posts: 966
|
Quote:
|
|
06-15-2011, 01:19 PM | #70 |
Mr. 155 and climbing
Drives: Seriously Modded 07 Sedan Join Date: Jun 2006
Location: In The Hotbox
Posts: 4,742
|
any reason this thread died or is there nothing else to say?
__________________
Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes. |
06-15-2011, 07:10 PM | #71 |
Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010
Location: New Jersey
Posts: 875
|
There just isn't much left to say lol. I still have a boost leak, and I'm burning a tiny bit of oil occasionally, but other than that the Zage kit is holding up nicely. Most people just PM me with their questions at this point.
I think most people have kits installed professionally anyways. Honestly, I'd do another 10 turbo installs before doing this clutch job I'm currently elbow deep in |
06-15-2011, 09:13 PM | #72 |
Mr. 155 and climbing
Drives: Seriously Modded 07 Sedan Join Date: Jun 2006
Location: In The Hotbox
Posts: 4,742
|
yeah, I am sure that before the year is out I will be in need of a clutch install.
__________________
Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes. |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
NEWS: TOYOTA REVEALS ALL-NEW YARIS SEDAN AT 2006 LOS ANGELES AUTO SHOW | VitzBoy | General Yaris / Vitz Discussion | 7 | 09-20-2023 07:50 AM |
Turbo kits!! | djgab101 | Forced Induction Forum | 26 | 03-09-2015 03:24 PM |
2007 Yaris Pricing Info ! | YarisBueller | New YARIS Purchase Forum | 104 | 06-24-2009 04:54 PM |
Turbo kit Brainstorming | Gideon | Forced Induction Forum | 16 | 04-19-2009 12:54 AM |