Built engine - GEN-2 GTX3076r - Page 11 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

FRS Justin · 05-15-2017, 04:25 PM

Quote:

Originally Posted by Kris86

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

Before you pull the engine air up the cylinder and listen for blow by. Listen to the intake, exhaust, and the crankcase.

FRS Justin · 05-15-2017, 04:35 PM

Quote:

Originally Posted by Kris86

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

They are all fairly equal which leads me to believe its in the heads or timing components

Kris86 · 05-21-2017, 11:35 AM

So, after not finding anything externally, we pulled the motor :-(

Upon inspecting the rings we found they were indeed cut a bit to big, not drastically. We replaced them and cut them over correctly and have put the engine back in last night and stared her up this morning.

Still, on intial cold start up it will not idle by itself, but after a while it definitely got to idle unassisted a lot quicker than before.

Still doesn't sound like I've fixed the problem :-(

My next step is thinking of flying in my tuner

I don't know what else to do

Mechanic thinks it could be tuning related

Kris86 · 05-21-2017, 11:36 AM

Quote:

Originally Posted by FRS Justin

Before you pull the engine air up the cylinder and listen for blow by. Listen to the intake, exhaust, and the crankcase.

We did this when we pulled the engine out, we could hear it going down into the crank case

Kris86 · 05-21-2017, 11:37 AM

NONE of the pistons had any marks on them to indicate there would be any bent valves

Sportsguy83 · 06-01-2017, 11:00 AM

Anything new @Kris86 ?

GsxrMe · 06-01-2017, 11:02 AM

When you replaced the valve springs, did you lap each valve, maybe its you head and valves not seating correctly?

Dipstik-sportech · 06-01-2017, 01:08 PM

The initial startup rough idle is caused by it firing up on larger than stock port injectors. Mines done it for years, you get use to holding the throttle a bit for 20-30sec until it kink onto the direct injectors.

Kris86 · 06-05-2017, 01:43 PM

Quote:

Originally Posted by Sportsguy83

Anything new @Kris86 ?

Wish I knew what to say

Do u know if something is wrong with Delicious Tuning? Or maybe they are just point blank avoiding me.

Been trying to get in contact with them about a log I sent them since the 27th of may

Kris86 · 06-05-2017, 01:44 PM

Quote:

Originally Posted by GsxrMe

When you replaced the valve springs, did you lap each valve, maybe its you head and valves not seating correctly?

Yes we made sure we did this process with precision... we made sure all valve shims were gapped correctly

Kris86 · 06-05-2017, 01:46 PM

Quote:

Originally Posted by Dipstik-sportech

The initial startup rough idle is caused by it firing up on larger than stock port injectors. Mines done it for years, you get use to holding the throttle a bit for 20-30sec until it kink onto the direct injectors.

Pretty sure is isn't supposed to be this bad... to me it needs more fuel at idle. Especially on cold start

DustinS · 06-05-2017, 01:55 PM

Quote:

Originally Posted by Dipstik-sportech

The initial startup rough idle is caused by it firing up on larger than stock port injectors. Mines done it for years, you get use to holding the throttle a bit for 20-30sec until it kink onto the direct injectors.

?? I didn't have this issue on my ID1000s. Not even on E85 in below freezing weather. Possibly tune related...

Sportsguy83 · 06-05-2017, 02:38 PM

Quote:

Originally Posted by DustinS

?? I didn't have this issue on my ID1000s. Not even on E85 in below freezing weather. Possibly tune related...

Me neither but he's running 2000cc injectors, really don't know if it makes htat much of a difference.

Sportsguy83 · 06-05-2017, 02:38 PM

Quote:

Originally Posted by Kris86

Wish I knew what to say

Do u know if something is wrong with Delicious Tuning? Or maybe they are just point blank avoiding me.

Been trying to get in contact with them about a log I sent them since the 27th of may

I particularly don't know. Hope you get a reply soon.

05-21-2017, 11:35 AM	#143
Kris86 Senior Member Join Date: Feb 2013 Drives: RHD Gt86 Location: Antigua, west indies Posts: 365 Thanks: 614 Thanked 101 Times in 74 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	So, after not finding anything externally, we pulled the motor :-( Upon inspecting the rings we found they were indeed cut a bit to big, not drastically. We replaced them and cut them over correctly and have put the engine back in last night and stared her up this morning. Still, on intial cold start up it will not idle by itself, but after a while it definitely got to idle unassisted a lot quicker than before. Still doesn't sound like I've fixed the problem :-( My next step is thinking of flying in my tuner I don't know what else to do Mechanic thinks it could be tuning related __________________ Toyota - Making Dreams A Reality 461hp on 91octane - JDL turbo GTX3076r GEN 2 - Mazworx CD009 transmission Last edited by Kris86; 05-21-2017 at 12:10 PM.

05-21-2017, 11:37 AM	#145
Kris86 Senior Member Join Date: Feb 2013 Drives: RHD Gt86 Location: Antigua, west indies Posts: 365 Thanks: 614 Thanked 101 Times in 74 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	NONE of the pistons had any marks on them to indicate there would be any bent valves __________________ Toyota - Making Dreams A Reality 461hp on 91octane - JDL turbo GTX3076r GEN 2 - Mazworx CD009 transmission

06-01-2017, 11:02 AM	#147
GsxrMe Senior Member Join Date: Jul 2015 Drives: Late 2014 Subaru BRZ Location: Cape Coral, FL Posts: 557 Thanks: 20 Thanked 183 Times in 139 Posts Mentioned: 5 Post(s) Tagged: 2 Thread(s)	When you replaced the valve springs, did you lap each valve, maybe its you head and valves not seating correctly? __________________ 2014 Subaru BRZ FBM Turbokit: GTX3076R - ECUTEK HRI FlexFuel tune - FBM 3" Turboback Exhaust - 550cc Injectors - Walbro 485 Fuel Pump - 4bar Map Sensor - FBM Oil Pan - ACT SB7-XTSS - AMSOIL all fluids - Forester XT Oil Cooler - Cusco engine, trans mounts - Whiteline rear differential bushings - Perrin shifter bushing - Firehawk 235/45/17 - AEM Failsafe

06-01-2017, 01:08 PM	#148
Dipstik-sportech Senior Member 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)	The initial startup rough idle is caused by it firing up on larger than stock port injectors. Mines done it for years, you get use to holding the throttle a bit for 20-30sec until it kink onto the direct injectors. __________________ 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

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