Welcome to the North American Subaru Impreza Owners Club Tuesday July 22, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Built Motor Discussion

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 02-07-2013, 09:39 PM   #1
jtrakel
Scooby Specialist
 
Member#: 242647
Join Date: Mar 2010
Chapter/Region: NWIC
Location: Lacey, WA
Vehicle:
04
PSM

Default Name this noise (freshly built 04 STI)

Alright so this is another game of "Name that Noise" Finally got the car started last night at about 0100 everything is going fine so far maybe I'm just a little over reactive still. I've sent this video to my builder/tuner as well just looking for some more input while he tries to look into it. He does not think it sounds to abnormal.

-settings-
Coolant temp ~130
Oil temp~ just under normal operating temp (my gauge is not hooked up yet)
Oil pressure~ 30-35psi
fuel pressure~ 50psi
RPM range ~1k-2500
all gears but the video is in first

It's a pretty subtle noise, but to me it almost sounds like a metallic click you can hear my massive injectors "clicking" as well but this sounds a little different. At about second 23 it is the most predominant. I by no means consider myself a subie god but I'm also not a idiot the motor has about 150miles on it now it was built from a very reputable shop here in the PNW (pacific import auto) Mike and myself built the motor in the shop with him over seeing all of the work as I did it. Kind of a "teach you how to build" I'm using non-synthetic 5w50 oil. I've already changed it out once and the filter was immaculate. Also running a break-in additive as well. Just looking for another opinion is all thanks! I believe I've included all info but ask away! Motor specs to follow

Darton sleeved EJ257 bored to 100.5mm
CP 100.5mm pistons
Manley Trubo Tuff "I" beams
OEM forged heat treated crank
Clevit main and rod bearings
A1 Technologies H11 Head Studs
Fluidampr crank pully
GSC S2's 272 cams
GSC behive springs and retainers
OEM intake and exhaust valves
blueprinted 11mm Sti oil pump
balanced rotating asseymbly
rotated STI manifold with A/C delete
Gates racing timing belt and water pump
Turbo XS FMIC
TGV deletes
Mishimoto race radiator
Mishimoto 170 degree thermostat
Aeromotive fuel rails with custom steel braided lines all -6 AN fittings
FIC 2150cc top feed High-z injectors
Walbro E85 400lph in tank pump
AEM fuel pressure regulator
Garrett GTX3582 w/ TIAL .82ar exhaust housing
TIAL 38mm EWG dumping to atmosphere
V-band rotated up-pipe
V-band rotated down-pipe
HKS titanium axle back
Race Ready electronic exhaust cutout welded into downpipe
Killer B oil pickup
Killer B oil windage tray
killer B oil pan
Crawford V2 A/O seporator

* Registered users of the site do not see these ads.
jtrakel is offline   Reply With Quote
Old 02-09-2013, 10:12 AM   #2
kapp_badbloodz
Scooby Newbie
 
Member#: 203327
Join Date: Feb 2009
Location: Mount Holly, NJ
Vehicle:
2002 WRX
Silver

Default

Sounds like piston slap.

Have you driven it around yet? I figured out after making an ass out of myself asking a bunch of noob questions that a built motor with quality forged components takes more time than your average cast parts.

Drive it around (if you can) and put some load on the engine. One its at a normal operating temp then see if the noise persists.

Don't bust your car's ass if you don't have a stable break in tune!!!!
kapp_badbloodz is offline   Reply With Quote
Old 02-09-2013, 10:17 AM   #3
kapp_badbloodz
Scooby Newbie
 
Member#: 203327
Join Date: Feb 2009
Location: Mount Holly, NJ
Vehicle:
2002 WRX
Silver

Default

Check for boost/exhaust leaks. My car is running like doo doo because of that too. Those electronic pipes that let you open up your exhaust at the down pipe or whatever they do (make your car louder) leak really bad. Also, if you have a VTA type BOV ditch it and go full recirculating.

EDIT: I didn't want to post this since you already have rails/fpr but my 2008 has the dreaded stumble issue. Have your tuner dial in your rails/fpr or add 3' of fuel line after the OEM fpr to remedy the fueling issue.

These are some of the issues I've had so I'd rather pass it off for gee wiz info over you guessing if you come across it. You got a nice build going though. How do you like the flipped manifold? Pics?
kapp_badbloodz is offline   Reply With Quote
Old 02-09-2013, 11:27 AM   #4
_OneFastSTI_
Scooby Newbie
 
Member#: 167103
Join Date: Dec 2007
Location: Oklahoma City
Vehicle:
2007 STi
URBAN GREY METALLIC

Default

Piston slap. Go drive the thing. Don't worry about it. Mine sounds the exact same.
_OneFastSTI_ is offline   Reply With Quote
Old 02-09-2013, 11:24 PM   #5
jtrakel
Scooby Specialist
 
Member#: 242647
Join Date: Mar 2010
Chapter/Region: NWIC
Location: Lacey, WA
Vehicle:
04
PSM

Default

Quote:
Originally Posted by kapp_badbloodz View Post
Sounds like piston slap.

Have you driven it around yet? I figured out after making an ass out of myself asking a bunch of noob questions that a built motor with quality forged components takes more time than your average cast parts.

Drive it around (if you can) and put some load on the engine. One its at a normal operating temp then see if the noise persists.

Don't bust your car's ass if you don't have a stable break in tune!!!!
My break in tune is about as stable as it will get I'm not worried about the tune. My car is totally drivable just a mysterious noise which I believe to be piston slap as well.

Quote:
Originally Posted by _OneFastSTI_ View Post
Piston slap. Go drive the thing. Don't worry about it. Mine sounds the exact same.
Sweet thanks She's been ridden hard and putting away wet a few times already! But in all seriousness I'm doing a mixture between a hard and soft break in. The motor see's it's fair share of positive boost.

Quote:
Originally Posted by kapp_badbloodz View Post
Check for boost/exhaust leaks. My car is running like doo doo because of that too. Those electronic pipes that let you open up your exhaust at the down pipe or whatever they do (make your car louder) leak really bad. Also, if you have a VTA type BOV ditch it and go full recirculating.

EDIT: I didn't want to post this since you already have rails/fpr but my 2008 has the dreaded stumble issue. Have your tuner dial in your rails/fpr or add 3' of fuel line after the OEM fpr to remedy the fueling issue.

These are some of the issues I've had so I'd rather pass it off for gee wiz info over you guessing if you come across it. You got a nice build going though. How do you like the flipped manifold? Pics?
Defiantly not a boost leak or exhaust leak. All of my waste gate lines etc. are all AN fittings and my exhaust cut-out is currently not welded into the down pipe since I've changed my piping to V-band connections. Also no issues with fueling all my pressures are solid on booth feed and return. No need to extend or shorten and lines. I do not run a BOV at all and if I did it would not really matter since I'm tuned on speed density (compressor surge FTW!) Thanks for the info though I'm chalking it up to piston slap right now. And I do enjoy my rotated manifold it took some work and $$ but it's worth it to me. Looks better IMO

jtrakel is offline   Reply With Quote
Old 02-09-2013, 11:38 PM   #6
kapp_badbloodz
Scooby Newbie
 
Member#: 203327
Join Date: Feb 2009
Location: Mount Holly, NJ
Vehicle:
2002 WRX
Silver

Default

I can't wait to flip the manifold. But its going to have to wait since I want to make the jump to a cosworth. Might wait till next year during winter to yank my OEM intake mani and sell it then buy the cosworth.

Process West has a new manifold out but it doesn't have the sensor lines like cosworth has.

Thanks for the pics. Give me some ideas. Don't fret either. I was wigging out about the noise too. Once I get home I'll post the YouTube video I took of mine so you can compare the sounds.

Edit: https://www.youtube.com/watch?v=fR8J...e_gdata_player
kapp_badbloodz is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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


All times are GMT -4. The time now is 10:14 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.