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06-25-2009, 11:11 AM | #1 |
Scooby Specialist
Member#: 126112
Join Date: Sep 2006
Chapter/Region:
TXIC
Location: Houston,Texas
Vehicle:93.5 Toyota Supra Red |
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
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Last edited by TopEndPull; 06-25-2009 at 11:40 AM. |
06-25-2009, 11:30 AM | #2 |
Scooby Guru
Member#: 33782
Join Date: Mar 2003
Chapter/Region:
MAIC
Location: Milton Keynes, UK
Vehicle:96 3MI Racing search FIRST, then PM!!! |
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. |
06-25-2009, 11:42 AM | #3 |
Scooby Specialist
Member#: 126112
Join Date: Sep 2006
Chapter/Region:
TXIC
Location: Houston,Texas
Vehicle:93.5 Toyota Supra Red |
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. |
06-25-2009, 11:46 AM | #4 |
Scooby Guru
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Join Date: Mar 2003
Chapter/Region:
MAIC
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Vehicle:96 3MI Racing search FIRST, then PM!!! |
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. |
06-25-2009, 11:47 AM | #5 |
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RMIC
Location: Denver
Vehicle:2005 STi EFR 6758 04 S2000 EFR 7064 |
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?
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06-25-2009, 11:50 AM | #6 |
Scooby Specialist
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Join Date: Sep 2006
Chapter/Region:
TXIC
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Vehicle:93.5 Toyota Supra Red |
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! |
06-25-2009, 11:53 AM | #7 |
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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) |
06-25-2009, 01:37 PM | #8 | |
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Quote:
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06-25-2009, 07:33 PM | #9 |
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South East
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Vehicle:05 STI 35r + e85 |
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.
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06-25-2009, 07:38 PM | #10 |
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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 |
06-26-2009, 11:25 AM | #11 |
Citizen Mick
Member#: 27646
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NWIC
Location: Portland, Oregon
Vehicle:2003 Sleeved 2.5 Oil Dry Sump Goodness |
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. |
07-08-2009, 07:13 PM | #12 | |
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Vehicle:93.5 Toyota Supra Red |
Update
Quote:
Last edited by TopEndPull; 08-05-2009 at 10:42 AM. |
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07-08-2009, 07:16 PM | #13 | |
Scooby Specialist
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Join Date: Sep 2006
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Vehicle:93.5 Toyota Supra Red |
Quote:
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. |
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07-08-2009, 08:07 PM | #14 |
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You could, but you'd better check for clearance and what not when your done. Might need a thicker head gasket to compensate.
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07-08-2009, 10:57 PM | #15 |
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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? |
07-08-2009, 11:03 PM | #16 |
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personally i would go with stock head gaskets torqued to at least 85 lb/ft. thicker head gaskets are ALWAYS a bad idea imo.
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07-08-2009, 11:05 PM | #17 | |
Scooby Specialist
Member#: 126112
Join Date: Sep 2006
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Vehicle:93.5 Toyota Supra Red |
Quote:
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. |
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07-08-2009, 11:14 PM | #18 |
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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'. |
07-08-2009, 11:31 PM | #19 |
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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.
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07-08-2009, 11:34 PM | #20 |
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07-08-2009, 11:38 PM | #21 |
Scooby Specialist
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looking at the pics again, that head is going to need some welding. that gouge has to be at least .008" deep.
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07-08-2009, 11:43 PM | #22 | |
Scooby Specialist
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Quote:
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07-09-2009, 12:07 AM | #23 |
Scooby Guru
Member#: 33782
Join Date: Mar 2003
Chapter/Region:
MAIC
Location: Milton Keynes, UK
Vehicle:96 3MI Racing search FIRST, then PM!!! |
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.
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07-09-2009, 12:09 AM | #24 |
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07-09-2009, 12:17 AM | #25 |
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how the hell does that happen?
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