Mivec exhaust cam problem - Page 2 - EvoXForums.com - Mitsubishi Lancer Evolution X Forums
EvoXForums.com - Mitsubishi Lancer Evolution X Forums
Go Back   EvoXForums.com - Mitsubishi Lancer Evolution X Forums > Evo X > Evo X Engine (4B11T)
Home Register Forum Store Members List Calendar Auto Loans vBGarage Photo Gallery Search Today's Posts Mark Forums Read Auto EscrowInsurance

Evo X Engine (4B11T) Discussion for engine systems that are unique to the Evo X. IF THE TOPIC IS COMMON WITH OTHER LANCERS, PLEASE POST IT IN: '08+ Lancer Common.

Reply
 
Thread Tools Display Modes
Old 11-06-2011, 11:22 PM   #11
gixxer
X-phile
 
gixxer's Avatar
 
Join Date: Sep 2008
iTrader: (100)
Location: Montreal
Posts: 701
Quote:
Originally Posted by hollywood_X View Post
The 4.5 is for the stock clearances and cams etc. I have been working with A LOT of people having similar issues and the data seems to be piling up. I hope to be posting a bit of an email tonight to put some light on this.
I can not wait to read up on this !

What type of oil pressure should you have on a rebuilt engine at idle once the engine is warm ?

I met someone with an Evo 9 and he has a rebuilt engine, oil pressure at cold start was about 80 psi and when it warmed up it went down to 40 psi.

Thanks !
__________________
Complete engine build 2.2L with FP Black/Alpine sound system / /RallyArmor Mudflaps/TVM shortshifter/Girodisc stage 1/AEM analog boost & AFR gauges/Synchronic BOV/AMR coilovers / xMR dual oil catch cans / Akuma cam gear / Grimmspeed EBC / MAPerformance oil cooler - rev 2 intake + exhaust manifold ceramic coated black -

Last edited by gixxer; 11-07-2011 at 12:31 AM.
gixxer is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-07-2011, 12:38 AM   #12
gunzo
[Gearhead]
 
gunzo's Avatar
 
Join Date: Aug 2007
iTrader: (100)
Posts: 1,495
Quote:
Originally Posted by hollywood_X View Post
Yes no oil pressure = -35* (Full retard)
wrong .. no oil pressure is full advance ..
__________________
Use the BLUE OIL at your own risk !
The manufacturer has tested the oil
and it failed the tests.
You've been warned.
Sent with GalaxyTab 10.1 I/O
gunzo is offline   Reply With Quote Quick reply to this message
Old 11-07-2011, 12:42 AM   #13
hollywood_X
[E-Tuner]
 
hollywood_X's Avatar
 
Join Date: Dec 2008
iTrader: (100)
Location: Idaho bitch
Posts: 8,999
Quote:
Originally Posted by gunzo View Post
wrong .. no oil pressure is full advance ..
I just posted a thread on this, monitor both and see where your cam timing goes when oil pressure drops.
__________________
PM me if you're in need of an eTune


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
hollywood_X is offline   Reply With Quote Quick reply to this message
 
Old 11-07-2011, 01:20 AM   #14
gunzo
[Gearhead]
 
gunzo's Avatar
 
Join Date: Aug 2007
iTrader: (100)
Posts: 1,495
Quote:
Originally Posted by hollywood_X View Post
I just posted a thread on this, monitor both and see where your cam timing goes when oil pressure drops.


what you see is not what you get
__________________
Use the BLUE OIL at your own risk !
The manufacturer has tested the oil
and it failed the tests.
You've been warned.
Sent with GalaxyTab 10.1 I/O
gunzo is offline   Reply With Quote Quick reply to this message
Old 11-07-2011, 01:42 AM   #15
mantella
X-phile
 
Join Date: Mar 2009
iTrader: (100)
Location: louisville
Posts: 863
yes that was confusing me at 1st then i relized that my full advanced was others full retard so i have to remeber to stick with ecuflash/ cobb/ evoscan data values and not actual.
mantella is offline   Reply With Quote Quick reply to this message
Old 11-10-2011, 01:28 AM   #16
gunzo
[Gearhead]
 
gunzo's Avatar
 
Join Date: Aug 2007
iTrader: (100)
Posts: 1,495
Quote:
Originally Posted by hollywood_X View Post
I just posted a thread on this, monitor both and see where your cam timing goes when oil pressure drops.
just make sure we're singing on the same sheet of music

Intake = max retard at start
Exhaust = max advance at start

not affected by oil pressure since its mechanical stop ..
__________________
Use the BLUE OIL at your own risk !
The manufacturer has tested the oil
and it failed the tests.
You've been warned.
Sent with GalaxyTab 10.1 I/O
gunzo is offline   Reply With Quote Quick reply to this message
Old 12-10-2011, 05:45 AM   #17
mantella
X-phile
 
Join Date: Mar 2009
iTrader: (100)
Location: louisville
Posts: 863
I never did post what all ifound that caused this. 1st the gauge i was using was wrong it had been hooked to a auto trans at work so read wrong and to low. i installed a gauge now and 21 psi at 900 rpms. 1 problem was i had a exhuast leak at the downpipe to the turbo which was small but caused extra heat on the exhuast cam solenoid making it act funny. after fixing the leak it made it better but not all fixed but i did verify the problem by putting a temp head shield there and it worked. so after fixing that. I did the stuff above like checking clearances and passages but no luck and the problem went away. I forgot that I had raised the idle to 935 to solve it. The main problem apears to be the valve springs 85 supertech dual valve springs are just alot stiffer from the factory causing issues. So raising the idle a little was enough to stabilze it.
mantella is offline   Reply With Quote Quick reply to this message
Old 12-10-2011, 08:31 PM   #18
AkumaMotorsports
Member
 
Join Date: Oct 2010
iTrader: (0)
Posts: 52
Quote:
Originally Posted by gunzo View Post
just make sure we're singing on the same sheet of music

Intake = max retard at start
Exhaust = max advance at start

not affected by oil pressure since its mechanical stop ..
This is only partially correct. The cams are designed to default to 0 on both cams in a resting state. However, they rely on oil pressure to do so. The EX cam has a helper spring to keep the cam in a neutral, or 0 deg state at idle. WHen you have a heavier spring, larger cams and lower oil pressure at idle, the Ex Cam can not stay in the '0' position and falls to -30deg.

John
AkumaMotorsports is offline   Reply With Quote Quick reply to this message
Old 12-10-2011, 09:02 PM   #19
hollywood_X
[E-Tuner]
 
hollywood_X's Avatar
 
Join Date: Dec 2008
iTrader: (100)
Location: Idaho bitch
Posts: 8,999
Quote:
Originally Posted by AkumaMotorsports View Post
This is only partially correct. The cams are designed to default to 0 on both cams in a resting state. However, they rely on oil pressure to do so. The EX cam has a helper spring to keep the cam in a neutral, or 0 deg state at idle. WHen you have a heavier spring, larger cams and lower oil pressure at idle, the Ex Cam can not stay in the '0' position and falls to -30deg.

John
Exactly! What is supposed to be only applies to a stock engine.
At idle the car is fighting to get back to zero do to the stiffer internals. The dinky spring and minimal oil pressure just can't make that happen.
__________________
PM me if you're in need of an eTune


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
hollywood_X is offline   Reply With Quote Quick reply to this message
Old 07-25-2013, 11:57 PM   #20
Hiboost
Forum Lackey
 
Hiboost's Avatar
 
Join Date: Jun 2009
iTrader: (100)
Location: Rochester, NY
Posts: 2,132
Just had a set of Cosworth MX-1 cams installed and while the car idles like a champ after a few tweaks, as soon as the MIVEC kicks in above idle the exhaust cam wants to retard an extra -15 if I rev to 2k rpms. At idle both the intake and exhaust cams match target to actual so it appears something MIVEC related is wrong.

I'm going to go out and test if the exhaust cam has issues while under 5 / 10 /15 psi boost or if it's only cruise and off boost. Hopefully something simple but since I haven't researched it heavily yet I'm going to continue my search for an answer.
__________________
Chris Wirth
Build:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2011 Octane Blue Evo X MR
Best 1/4 Mile ET & Speed: 11.677 @ 119.06
STM Mustang Dyno: 390 whp / 360 wtq

2017 Global Time Attack - Limited AWD Class
2nd - Road Atlanta

2017 CSCS Time Attack - Street AWD Class
1st - Mosport DDT 1:38.391 (Record)
1st - TMP 1:17.644 (Record)
1st - TMP Reverse 1:23.944 (Record)
1st - Shannonville 1:59.748 (Record)
Hiboost is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the EvoXForums.com - Mitsubishi Lancer Evolution X Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Security Question
While balancing on a piece of wood, two inches by four inches known as a 2x4, john and his friend sally both spotted a dalmatian inside a truck with sirens, headed to put out a fire. State what the 2x4 is made of.
Insurance
Please select your insurance company (Optional)

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mivec exhaust cam issue jonvr4 Evo X Engine (4B11T) 16 09-28-2015 02:48 AM
wtb: both mivec solonoids,cam gears and both cam sensors. tsi20gawd Completed Transactions 2 08-05-2011 10:26 PM
Exhaust Side Cam bearings No GooD Names Evo X Engine (4B11T) 3 01-11-2011 11:46 AM
PO171 is triggered by exhaust problem, right bradze Evo X Engine (4B11T) 39 12-04-2010 11:08 PM
problem after cb exhaust FatalCloud Evo X Performance 14 06-04-2010 06:25 PM


All times are GMT. The time now is 04:34 PM.



Powered by vBulletin® Copyright ©2000 - 2019, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.