Welcome to the North American Subaru Impreza Owners Club Thursday March 28, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 06-25-2009, 11:11 AM   #1
TopEndPull
Scooby Specialist
 
Member#: 126112
Join Date: Sep 2006
Chapter/Region: TXIC
Location: Houston,Texas
Vehicle:
93.5 Toyota Supra
Red

Default If its a dropped sleeve, what do i do?

Well i've been having on going issues with my cooling system getting pressurized with normal driving and hardly seeing any boost at all. It kept overflowing out of my overflow tank so i changed out my radiator caps, checked the thermostat, burped the sytem 3 or 4 times now but last night my friend came over with a Combustion leak tester and tested the coolant in the radiator. After about 2 pumps, the liquid turned yellow indicating exhaust gas's in the coolant which would mean a cracked head, leaking head gasket, cracked blow or dropped sleeve.

I fear it maybe a dropped sleeve and if it is, what would i do?
Asking for advice on what to do here if this was the outcome.
Car idles fine, heater blows hot air, no coolant in the oil or vice versa and no smoking from the exhaust.
Could the seals on the turbo also go bad? if it did i think it would be very noticable ie lots of smoke.


mods are:
Darton sleeved EJ257 block, mains pinned, ARP fasteners and studs, crank balanced and cross drilled, Cobb oil pump, minor bowl port work on the head, Pauter rods, CP pistons (stock bore)
Perrin GT35R (t31) Kit
Perrin FMIC, Perrin Blow thru
APS Fuel rails
DW1150cc injectors
Walbro Pump
Gruppe-S UEL headers
TGV Deletes
Perrin light weight pulley
ngk one step colder plugs
3in cat back exhaust
Tial 50mm bov
zero-sports rad caps
oem radiator,hoses and thermostat.
OS tune
* Registered users of the site do not see these ads.

Last edited by TopEndPull; 06-25-2009 at 11:40 AM.
TopEndPull is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 06-25-2009, 11:30 AM   #2
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: Milton Keynes, UK
Vehicle:
96 3MI Racing
search FIRST, then PM!!!

Default

tear the motor down and inspect it.
If nothing is majorly wrong; deck the block.

BUT first do a compression test and/ok leak down test.
Homemade WRX is offline   Reply With Quote
Old 06-25-2009, 11:42 AM   #3
TopEndPull
Scooby Specialist
 
Member#: 126112
Join Date: Sep 2006
Chapter/Region: TXIC
Location: Houston,Texas
Vehicle:
93.5 Toyota Supra
Red

Default

did a compression test about 4 weeks ago and results were:

cylinder 1 145
cylinder 2 135
cylinder 3 145
cylinder 4 145

I'll do one tonight when i get home, dropping off the car tomorrow and i am going to have them do the leak down test if possible too.
TopEndPull is offline   Reply With Quote
Old 06-25-2009, 11:46 AM   #4
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: Milton Keynes, UK
Vehicle:
96 3MI Racing
search FIRST, then PM!!!

Default

with those numbers, I'd definately to the leak down.

Quite interesting they are all 145 on the nose however. The 135 still isn't 10% or greater drop from the rest.
Homemade WRX is offline   Reply With Quote
Old 06-25-2009, 11:47 AM   #5
yamahaSHO
Scooby Specialist
 
Member#: 73932
Join Date: Nov 2004
Chapter/Region: RMIC
Location: Denver
Vehicle:
2005 STi EFR 6758
04 S2000 EFR 7064

Default

I'd definitely do it again. I would be more alarmed if the 135 was something like 70 PSI. Is this a low compression motor?
yamahaSHO is offline   Reply With Quote
Old 06-25-2009, 11:50 AM   #6
TopEndPull
Scooby Specialist
 
Member#: 126112
Join Date: Sep 2006
Chapter/Region: TXIC
Location: Houston,Texas
Vehicle:
93.5 Toyota Supra
Red

Default

When i did it the first time, this is what i got

145
130
145
145

tried it again to make sure i didnt do it wrong or messup i got this
145
135
145
145

I believe it is NOT a low compression motor from what i can remember.

Thanks!
TopEndPull is offline   Reply With Quote
Old 06-25-2009, 11:53 AM   #7
yamahaSHO
Scooby Specialist
 
Member#: 73932
Join Date: Nov 2004
Chapter/Region: RMIC
Location: Denver
Vehicle:
2005 STi EFR 6758
04 S2000 EFR 7064

Default

What is the compression on these motors in stock form? I ask because 145 PSI would be low for a high compression motor. My SHO is 9.5:1 (stock was 9.8:1) and compression is in the upper 190's.

Edit: I just searched the stock comrpression. I would consider it low compression (8.2:1 for STi/ 8:1 for WRX)
yamahaSHO is offline   Reply With Quote
Old 06-25-2009, 01:37 PM   #8
the suicidal eggroll
Scooby Guru
 
Member#: 51961
Join Date: Jan 2004
Chapter/Region: RMIC
Location: Broomfield, CO
Vehicle:
2005 STi
2012 WRX

Default

Quote:
Originally Posted by yamahaSHO View Post
What is the compression on these motors in stock form? I ask because 145 PSI would be low for a high compression motor. My SHO is 9.5:1 (stock was 9.8:1) and compression is in the upper 190's.

Edit: I just searched the stock comrpression. I would consider it low compression (8.2:1 for STi/ 8:1 for WRX)
It's 8.5:1 for WRX, and yes it is pretty low compression.
the suicidal eggroll is offline   Reply With Quote
Old 06-25-2009, 07:33 PM   #9
jays05
Scooby Specialist
 
Member#: 78165
Join Date: Dec 2004
Chapter/Region: South East
Location: SC
Vehicle:
05 STI 35r + e85

Default

IMO you need to pull the motor apart now and not keep driving on it. When my old built motor blew a HG it hydrolocked one cyl and ****ed things up pretty good. And mine was also cyl #2.
jays05 is offline   Reply With Quote
Old 06-25-2009, 07:38 PM   #10
TopEndPull
Scooby Specialist
 
Member#: 126112
Join Date: Sep 2006
Chapter/Region: TXIC
Location: Houston,Texas
Vehicle:
93.5 Toyota Supra
Red

Default

I am dropping it off tomorrow to have it pulled and taken apart.
i hope its just a head gasket and not a dropped sleeve issue.

Thanks for the input guys
TopEndPull is offline   Reply With Quote
Old 06-26-2009, 11:25 AM   #11
mick_the_ginge
Citizen Mick
 
Member#: 27646
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Portland, Oregon
Vehicle:
2003 Sleeved 2.5
Oil Dry Sump Goodness

Default

I had a sleeve drop (it was after a huge engine failure and overheat) The block was re-surfaced and so were the heads to correct the issue.

Make sure both block and heads are checked.
mick_the_ginge is offline   Reply With Quote
Old 07-08-2009, 07:13 PM   #12
TopEndPull
Scooby Specialist
 
Member#: 126112
Join Date: Sep 2006
Chapter/Region: TXIC
Location: Houston,Texas
Vehicle:
93.5 Toyota Supra
Red

Default

Update
Quote:
Originally Posted by STROKERgSr

Here you can see the spot left on the head gasket from the piece


A shot of where the gasket wasnt sealing due to the imperfection


The piece that was found stuck to the head gasket


Last edited by TopEndPull; 08-05-2009 at 10:42 AM.
TopEndPull is offline   Reply With Quote
Old 07-08-2009, 07:16 PM   #13
TopEndPull
Scooby Specialist
 
Member#: 126112
Join Date: Sep 2006
Chapter/Region: TXIC
Location: Houston,Texas
Vehicle:
93.5 Toyota Supra
Red

Default

Quote:
Originally Posted by STROKERgSr

The chip out of the head








Couple pics with a straight edge to get a feel for the depth


This was the reason why i was getting exhaust gases in my cooling system.
i am guessing i can get the head resurface and i am good right?

What about the cylinders? I was told by the shop that the sleeves were flush from what they could tell. So its not a dropped sleeve.

Last edited by TopEndPull; 07-09-2009 at 05:11 PM.
TopEndPull is offline   Reply With Quote
Old 07-08-2009, 08:07 PM   #14
madmax718
Scooby Specialist
 
Member#: 172501
Join Date: Feb 2008
Default

You could, but you'd better check for clearance and what not when your done. Might need a thicker head gasket to compensate.
madmax718 is offline   Reply With Quote
Old 07-08-2009, 10:57 PM   #15
TopEndPull
Scooby Specialist
 
Member#: 126112
Join Date: Sep 2006
Chapter/Region: TXIC
Location: Houston,Texas
Vehicle:
93.5 Toyota Supra
Red

Default

will do, i think they are taking it to the machine shop to have it checked and go from there. most likely a cometic head gasket pending thickness.

Any one else?
TopEndPull is offline   Reply With Quote
Old 07-08-2009, 11:03 PM   #16
n2oiroc
Scooby Specialist
 
Member#: 141952
Join Date: Feb 2007
Chapter/Region: MWSOC
Location: milwaukee'ish
Vehicle:
2023 M340i

Default

personally i would go with stock head gaskets torqued to at least 85 lb/ft. thicker head gaskets are ALWAYS a bad idea imo.
n2oiroc is offline   Reply With Quote
Old 07-08-2009, 11:05 PM   #17
TopEndPull
Scooby Specialist
 
Member#: 126112
Join Date: Sep 2006
Chapter/Region: TXIC
Location: Houston,Texas
Vehicle:
93.5 Toyota Supra
Red

Default

Quote:
Originally Posted by n2oiroc View Post
personally i would go with stock head gaskets torqued to at least 85 lb/ft. thicker head gaskets are ALWAYS a bad idea imo.
But if we had to mill the block and head, would the stock head gasket still be safe/work?

i read that the stock head gasket is very good but i was just worried that i would need thicker head gasket for clearance hence the aftermarket one.
TopEndPull is offline   Reply With Quote
Old 07-08-2009, 11:14 PM   #18
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: Milton Keynes, UK
Vehicle:
96 3MI Racing
search FIRST, then PM!!!

Default

you NEED to deck both head and block...that head appears to bed pretty bad but then again I'm looking at a picture online

thicker gasket should be used to help restore the proper 'deck height'.
Homemade WRX is offline   Reply With Quote
Old 07-08-2009, 11:31 PM   #19
n2oiroc
Scooby Specialist
 
Member#: 141952
Join Date: Feb 2007
Chapter/Region: MWSOC
Location: milwaukee'ish
Vehicle:
2023 M340i

Default

if you only need to take say .002" off the head and .002" off the block i personally wouldnt bother, .010" off each is another story though.
n2oiroc is offline   Reply With Quote
Old 07-08-2009, 11:34 PM   #20
kellygnsd
Scooby Guru
 
Member#: 32669
Join Date: Feb 2003
Chapter/Region: SCIC
Location: Woodland Hills
Vehicle:
2007 2.34LR, EFR7670
LINK G4+ hybrid STi

Default

Quote:
Originally Posted by n2oiroc View Post
personally i would go with stock head gaskets torqued to at least 85 lb/ft. thicker head gaskets are ALWAYS a bad idea imo.
A bad idea when used in any other situation besides making up for decking the heads and block.
kellygnsd is offline   Reply With Quote
Old 07-08-2009, 11:38 PM   #21
n2oiroc
Scooby Specialist
 
Member#: 141952
Join Date: Feb 2007
Chapter/Region: MWSOC
Location: milwaukee'ish
Vehicle:
2023 M340i

Default

looking at the pics again, that head is going to need some welding. that gouge has to be at least .008" deep.
n2oiroc is offline   Reply With Quote
Old 07-08-2009, 11:43 PM   #22
n2oiroc
Scooby Specialist
 
Member#: 141952
Join Date: Feb 2007
Chapter/Region: MWSOC
Location: milwaukee'ish
Vehicle:
2023 M340i

Default

Quote:
Originally Posted by Homemade WRX View Post
you NEED to deck both head and block...that head appears to bed pretty bad but then again I'm looking at a picture online

thicker gasket should be used to help restore the proper 'deck height'.
Quote:
Originally Posted by kellygnsd View Post
A bad idea when used in any other situation besides making up for decking the heads and block.
you guys good enough with math to figure out how much the cam timing actually changes with a decking? is it actually a linear amount like say 1* per .005"? is it really enough to make a difference and enough to justify messing the quench up? im pretty curious about it, but my math sucks.
n2oiroc is offline   Reply With Quote
Old 07-09-2009, 12:07 AM   #23
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: Milton Keynes, UK
Vehicle:
96 3MI Racing
search FIRST, then PM!!!

Default

yes, it is a linear relationship and is easy enough to work out if you have diameter of the cam gear....I'll have to measure one that I have sitting around.
Homemade WRX is offline   Reply With Quote
Old 07-09-2009, 12:09 AM   #24
n2oiroc
Scooby Specialist
 
Member#: 141952
Join Date: Feb 2007
Chapter/Region: MWSOC
Location: milwaukee'ish
Vehicle:
2023 M340i

Default

Quote:
Originally Posted by Homemade WRX View Post
yes, it is a linear relationship and is easy enough to work out if you have diameter of the cam gear....I'll have to measure one that I have sitting around.
excellent, it would be nice to know instead of making wild guesses.
n2oiroc is offline   Reply With Quote
Old 07-09-2009, 12:17 AM   #25
penusai
Scooby Specialist
 
Member#: 102808
Join Date: Dec 2005
Chapter/Region: Tri-State
Location: Long Island
Vehicle:
1995 Built EJ207 6sp
30r ***break in***

Default

how the hell does that happen?
penusai 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
If you were a zombie, what would you do sha_zapple Off-Topic 21 11-06-2006 11:31 AM
If money was no object.. what would you do to hit on someone? Sephro Off-Topic 56 10-25-2006 11:43 AM
If I go wing less what i shoul do?? BBBsti LTD Interior & Exterior Modification 2 07-28-2005 09:17 PM
If you had to choose... What would you do? omahasubaru Mid West Subaru Owners Club Forum -- MWSOC 10 01-20-2005 08:15 AM
If your engine is misfiring.... What can you do to fix it? myko011 Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) 3 05-24-2001 10:10 AM

All times are GMT -4. The time now is 07:02 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.