follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Speed By Design
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > Technical Topics > Forced Induction

Forced Induction Turbo, Supercharger, Methanol, Nitrous


User Tag List

Reply
 
Thread Tools Search this Thread
Old 05-05-2017, 12:02 PM   #127
Yoda
Senior Member
 
Join Date: Nov 2014
Drives: Crystal Black BRZ(Sophia)
Location: Greenacres, FL
Posts: 284
Thanks: 266
Thanked 118 Times in 75 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Kris86 View Post
The tuner also stated that if I do not find any vacuum leaks, then my motor isn't holding compression.


what I find weird is that the car has a wont idle once is cold, I have to keep my foot on the throttle to prevent it from stalling, but once it warms up, it idles perfectly, if I shut off the engine and start back when its hot I don't need to apply any throttle


my mechanic is saying that the piston rings need some more time to be seated and then my compression will go up.


whats you guy thoughts on this?
This brings me back some fond memories of my last turbo project. A sage laid some knowledge on me in its simplest form to help me troubleshoot issues like this. Three things you need to have combustion; spark, fuel, air. If you are sure spark and fuel are good then you can dive into air. Check for vac leaks, check the compression of the engine, check maf and all the way down the tree for air. You will find the problem. I had the opposite of your problem and it turned out to be the fuel pump. Also could be a simply grounding issue. Good luck you are almost there!
Yoda is offline   Reply With Quote
The Following User Says Thank You to Yoda For This Useful Post:
Kris86 (05-05-2017)
Old 05-05-2017, 01:32 PM   #128
Kris86
Senior Member
 
Kris86's Avatar
 
Join Date: Feb 2013
Drives: RHD Gt86
Location: Antigua, west indies
Posts: 365
Thanks: 614
Thanked 100 Times in 74 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Yoda View Post
This brings me back some fond memories of my last turbo project. A sage laid some knowledge on me in its simplest form to help me troubleshoot issues like this. Three things you need to have combustion; spark, fuel, air. If you are sure spark and fuel are good then you can dive into air. Check for vac leaks, check the compression of the engine, check maf and all the way down the tree for air. You will find the problem. I had the opposite of your problem and it turned out to be the fuel pump. Also could be a simply grounding issue. Good luck you are almost there!
we are going to be doing the compression check again tomorrow. putting on the oil pan tonight to let the silicone set properly and then in the morning start it back up and start looking again and spray carb cleaner around and see if I find anything as Justin suggested

could my EBCS be hooked up in a way to cause a vacuum leak? if I remember correctly, the EVAP solenoid is now disconnected and my EBCS is plugged into the plug that the EVAP was once plugged into, also the hose coming from the intake manifold is then plugged into the EBCS. its a three port so one is vented to atmosphere I think.


how do I check my MAF?


Thank you for your support !
__________________
Toyota - Making Dreams A Reality

461hp on 91octane - JDL turbo GTX3076r GEN 2 - Mazworx CD009 transmission
Kris86 is offline   Reply With Quote
Old 05-05-2017, 01:42 PM   #129
-Phil
Senior Member
 
Join Date: Nov 2015
Drives: Rb25 neo brz
Location: NJ
Posts: 210
Thanks: 129
Thanked 292 Times in 98 Posts
Mentioned: 16 Post(s)
Tagged: 5 Thread(s)
Did you preform a leak-down test on the motor before it was installed? If so what was the %?
-Phil is offline   Reply With Quote
The Following User Says Thank You to -Phil For This Useful Post:
Kris86 (05-05-2017)
Old 05-05-2017, 02:03 PM   #130
Kris86
Senior Member
 
Kris86's Avatar
 
Join Date: Feb 2013
Drives: RHD Gt86
Location: Antigua, west indies
Posts: 365
Thanks: 614
Thanked 100 Times in 74 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Moto-Phil View Post
Did you preform a leak-down test on the motor before it was installed? If so what was the %?

Yes we did a leak down test, not before but after the motor was installed in the vehicle.


two were 9%
one was 6%
one was 7%gl
__________________
Toyota - Making Dreams A Reality

461hp on 91octane - JDL turbo GTX3076r GEN 2 - Mazworx CD009 transmission

Last edited by Kris86; 05-05-2017 at 02:14 PM.
Kris86 is offline   Reply With Quote
Old 05-05-2017, 02:40 PM   #131
-Phil
Senior Member
 
Join Date: Nov 2015
Drives: Rb25 neo brz
Location: NJ
Posts: 210
Thanks: 129
Thanked 292 Times in 98 Posts
Mentioned: 16 Post(s)
Tagged: 5 Thread(s)
Quote:
Originally Posted by Kris86 View Post
Yes we did a leak down test, not before but after the motor was installed in the vehicle.


two were 9%
one was 6%
one was 7%gl
That's fairly normal before the valves and rings seat, i would run the car for a bit and give it a chance to seal up. Let the motor cool and get the number. if those are your numbers after already doing that then its a different story. generally motors we build are 1-2% leak-down while on the engine stand and that drops to 1 or less once the motor is ran.
-Phil is offline   Reply With Quote
The Following User Says Thank You to -Phil For This Useful Post:
Kris86 (05-05-2017)
Old 05-05-2017, 02:49 PM   #132
Kris86
Senior Member
 
Kris86's Avatar
 
Join Date: Feb 2013
Drives: RHD Gt86
Location: Antigua, west indies
Posts: 365
Thanks: 614
Thanked 100 Times in 74 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Moto-Phil View Post
That's fairly normal before the valves and rings seat, i would run the car for a bit and give it a chance to seal up. Let the motor cool and get the number. if those are your numbers after already doing that then its a different story. generally motors we build are 1-2% leak-down while on the engine stand and that drops to 1 or less once the motor is ran.
thank you so much for your help, I will relay this message to my mechanic and we will take it from there, I look forward to your continued support
__________________
Toyota - Making Dreams A Reality

461hp on 91octane - JDL turbo GTX3076r GEN 2 - Mazworx CD009 transmission
Kris86 is offline   Reply With Quote
Old 05-05-2017, 04:20 PM   #133
Kris86
Senior Member
 
Kris86's Avatar
 
Join Date: Feb 2013
Drives: RHD Gt86
Location: Antigua, west indies
Posts: 365
Thanks: 614
Thanked 100 Times in 74 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Moto-Phil View Post
That's fairly normal before the valves and rings seat, i would run the car for a bit and give it a chance to seal up. Let the motor cool and get the number. if those are your numbers after already doing that then its a different story. generally motors we build are 1-2% leak-down while on the engine stand and that drops to 1 or less once the motor is ran.
one thing to note tho, I cannot run my car any more than just idling, this is as far as we have gotten with the tuning
__________________
Toyota - Making Dreams A Reality

461hp on 91octane - JDL turbo GTX3076r GEN 2 - Mazworx CD009 transmission
Kris86 is offline   Reply With Quote
Old 05-06-2017, 03:13 PM   #134
Kris86
Senior Member
 
Kris86's Avatar
 
Join Date: Feb 2013
Drives: RHD Gt86
Location: Antigua, west indies
Posts: 365
Thanks: 614
Thanked 100 Times in 74 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Sooo, this is what I've found so far

Not sure if this will cause my vacuum leak issue tho
Attached Images
 
__________________
Toyota - Making Dreams A Reality

461hp on 91octane - JDL turbo GTX3076r GEN 2 - Mazworx CD009 transmission

Last edited by Kris86; 05-06-2017 at 04:07 PM.
Kris86 is offline   Reply With Quote
Old 05-07-2017, 02:51 PM   #135
Kris86
Senior Member
 
Kris86's Avatar
 
Join Date: Feb 2013
Drives: RHD Gt86
Location: Antigua, west indies
Posts: 365
Thanks: 614
Thanked 100 Times in 74 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Looks like we are gonna be pulling the motor :-( @FRS Justin @GsxrMe @Yoda @Moto-Phil

My mechanic thinks maybe the rings could have been cut to wide possibly, so he said he will get the rings and replace them. We have no vacuum leak, we have back check everything possible. We did the compression test and came up with this

Piston 1 - 95
Piston 2 - 90
Piston 3 - 98
Piston 4 - 93

Even though I'm running 9:0:1 compression I shouldn't be seeing such low results
__________________
Toyota - Making Dreams A Reality

461hp on 91octane - JDL turbo GTX3076r GEN 2 - Mazworx CD009 transmission

Last edited by Kris86; 05-08-2017 at 12:28 PM.
Kris86 is offline   Reply With Quote
The Following User Says Thank You to Kris86 For This Useful Post:
Yoda (05-08-2017)
Old 05-09-2017, 11:39 PM   #136
Dipstik-sportech
Senior Member
 
Dipstik-sportech's Avatar
 
Join Date: Oct 2012
Drives: 2013 BRZ satin white pearl sportech
Location: Thunder Bay Ontario Canada
Posts: 1,813
Thanks: 842
Thanked 911 Times in 576 Posts
Mentioned: 43 Post(s)
Tagged: 0 Thread(s)
Did you do the compression test on a warm engine with the throttle held wide open? 90psi is barely enough compression too fire off. If your rings were leaking down you would've seen that in the leak down test. Is there a lot of crank case pressure? Is it pushing coolant at all?
__________________
2013 SWP BRZ sportech. 11.11sec@129.01mph, 511whp on e70. FullBlown base kit, FullBlown built 9.5:1 engine, GTX3076R GEN2 turbo, 1700cc Bosch injectors, FullBlown flex fuel kit, FullBlown radiator and oil cooler, FullBlown custom 3" dual exit exhaust, act xtreme clutch, whiteline diff and subframe inserts, BC Racing coilovers, hotchkiss 18mm rear sway, is300 3.73 differential ... Never finished
Dipstik-sportech is offline   Reply With Quote
The Following User Says Thank You to Dipstik-sportech For This Useful Post:
Kris86 (05-10-2017)
Old 05-10-2017, 08:28 AM   #137
Kris86
Senior Member
 
Kris86's Avatar
 
Join Date: Feb 2013
Drives: RHD Gt86
Location: Antigua, west indies
Posts: 365
Thanks: 614
Thanked 100 Times in 74 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Dipstik-sportech View Post
Did you do the compression test on a warm engine with the throttle held wide open? 90psi is barely enough compression too fire off. If your rings were leaking down you would've seen that in the leak down test. Is there a lot of crank case pressure? Is it pushing coolant at all?
no we did the compression test when the engine was cold. just swinging the engine.


not sure about the crank case pressure tho :-S, would you mind explaining to me how to go about checking this?? I have in the Radium DUAL catch can set up, which are vented to atmosphere.


it has not pushed any coolant out what so ever.



ive been suggested that it would either be bent valves ( when engine wasn't timed correctly first) or maybe rings ground to much. :-(

I appreciate your help
__________________
Toyota - Making Dreams A Reality

461hp on 91octane - JDL turbo GTX3076r GEN 2 - Mazworx CD009 transmission

Last edited by Kris86; 05-10-2017 at 08:48 AM.
Kris86 is offline   Reply With Quote
Old 05-10-2017, 09:18 PM   #138
Dipstik-sportech
Senior Member
 
Dipstik-sportech's Avatar
 
Join Date: Oct 2012
Drives: 2013 BRZ satin white pearl sportech
Location: Thunder Bay Ontario Canada
Posts: 1,813
Thanks: 842
Thanked 911 Times in 576 Posts
Mentioned: 43 Post(s)
Tagged: 0 Thread(s)
What do you mean by just swinging the engine over?
__________________
2013 SWP BRZ sportech. 11.11sec@129.01mph, 511whp on e70. FullBlown base kit, FullBlown built 9.5:1 engine, GTX3076R GEN2 turbo, 1700cc Bosch injectors, FullBlown flex fuel kit, FullBlown radiator and oil cooler, FullBlown custom 3" dual exit exhaust, act xtreme clutch, whiteline diff and subframe inserts, BC Racing coilovers, hotchkiss 18mm rear sway, is300 3.73 differential ... Never finished
Dipstik-sportech is offline   Reply With Quote
The Following User Says Thank You to Dipstik-sportech For This Useful Post:
Izzyboost1 (05-11-2017)
Old 05-11-2017, 08:57 AM   #139
Kris86
Senior Member
 
Kris86's Avatar
 
Join Date: Feb 2013
Drives: RHD Gt86
Location: Antigua, west indies
Posts: 365
Thanks: 614
Thanked 100 Times in 74 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Dipstik-sportech View Post
What do you mean by just swinging the engine over?
Put my foot flat on the throttle and swung the engine a few revolutions with starter

We did not run the engine and warm it up before doing so
__________________
Toyota - Making Dreams A Reality

461hp on 91octane - JDL turbo GTX3076r GEN 2 - Mazworx CD009 transmission
Kris86 is offline   Reply With Quote
Old 05-11-2017, 01:01 PM   #140
Dipstik-sportech
Senior Member
 
Dipstik-sportech's Avatar
 
Join Date: Oct 2012
Drives: 2013 BRZ satin white pearl sportech
Location: Thunder Bay Ontario Canada
Posts: 1,813
Thanks: 842
Thanked 911 Times in 576 Posts
Mentioned: 43 Post(s)
Tagged: 0 Thread(s)
Take the intake pipe off and hold the throttle open and try again. Make sure you take all the spark plugs out to save your battery.
__________________
2013 SWP BRZ sportech. 11.11sec@129.01mph, 511whp on e70. FullBlown base kit, FullBlown built 9.5:1 engine, GTX3076R GEN2 turbo, 1700cc Bosch injectors, FullBlown flex fuel kit, FullBlown radiator and oil cooler, FullBlown custom 3" dual exit exhaust, act xtreme clutch, whiteline diff and subframe inserts, BC Racing coilovers, hotchkiss 18mm rear sway, is300 3.73 differential ... Never finished
Dipstik-sportech is offline   Reply With Quote
The Following User Says Thank You to Dipstik-sportech For This Useful Post:
Kris86 (05-11-2017)
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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
Who's tired of the "Pedal Dance" and wants to be in real control of their car? FT-86 SpeedFactory Tracking / Autocross / HPDE / Drifting 61 10-01-2015 07:44 PM
I drive fast because the car feel "slow" fang_gt86 Scion FR-S / Toyota 86 GT86 General Forum 65 05-04-2015 01:06 PM
Most effective ways to make a "fast" NA car Kronos Engine, Exhaust, Transmission 68 02-16-2014 01:59 PM
XSXV: Nissan R34 Skyline from "Fast and Furious" goat_cheese Cosmetic Maintenance (Wash, Wax, Detailing, Body Repairs) 29 10-25-2012 04:15 PM
come and hoon they say.... it will be "like Fast and the Furious", they say... davey90 AUSTRALIA 5 10-23-2012 12:11 AM


All times are GMT -4. The time now is 05:41 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.