Heads lifting under boost-a pictorial recap

Erich · 08-30-2006

A recap from before the hack:
Quarter mile mph down from 116 to 103.
First blamed the plug wires since there was some arcing. Not the problem
Fuel pump was dieing. Switched out a 140 lph in tank plus a 240 lph inline for a 255 walbro intank. The old intank one seemed to have metal shavings in it.

New pump worked well but noticed bubbles in the coolant overflow-lots of them. Coolant was pressurized under boost.

Pulled the heads. Here are some pictures.
You can see where the compression or exaust made its own path thru the headgasket past the metal ring to the coolant.

Up for this weekend: ARP headstuds, ARP headerstuds and felpro 1133 MLS gaskets.
Erich

1993SE · 08-30-2006

well, hopefully you get it fixed soon so you can take it back to the track

Erich · 08-30-2006

Yeah, it would suck to not get a "real run" in all season. It is interesting diagnosing stuff. It will be less interesting if I have problems with these 72 buck a piece headgaskets.
Erich

SpdBoss · 08-30-2006

yeah they are pricey but have proven to be well worth it. hope everything come out all right for ya so we can maybe get some vids of that going down the track.

uedlose · 08-31-2006

I would pull the top head bolts 5-8 ft# more then the lowers I did this on my wifes s/c car and it seemed to help some as the gaskets always blew on the top the same place as yours just a thought.

Erich · 09-05-2006

Got one side in. Studs and MLS gaskets. Of course on the first nut to tighten, my flippin torque wrench makes a big cracking noise. I loosened it and tightened again after making sure the wrench was still working.
Erich

hotwheels · 09-05-2006

Quote:

my flippin torque wrench makes a big cracking noise.

damn, that sounds like my luck......

NeverEnuff · 10-10-2006

You can always tighten the ARP head stud MORE than what they recommend you know to help...I think the ones on my old 89 said to go to something like 75 or 80...I had them at 90-95, and on my 99 I have them at 85-90 and I have NO problems with headgaskets...I am only running 15psi, but still no issues...we will see later when I up the boost once I finish learning how to tune.

Good luck

08-30-2006	#1 (permalink)
Erich Moderator Join Date: Aug 2006 Location: MD Posts: 235 iTrader: (0) Friends: (0) Last Online: 04-05-2010 01:38 PM Time Spent Online: 10 Minutes 55 Seconds My Album's: Erich's album My Garage: Erich's Garage Thanks: 0 Thanked 0 Times in 0 Posts	Heads lifting under boost-a pictorial recap A recap from before the hack: Quarter mile mph down from 116 to 103. First blamed the plug wires since there was some arcing. Not the problem Fuel pump was dieing. Switched out a 140 lph in tank plus a 240 lph inline for a 255 walbro intank. The old intank one seemed to have metal shavings in it. New pump worked well but noticed bubbles in the coolant overflow-lots of them. Coolant was pressurized under boost. Pulled the heads. Here are some pictures. You can see where the compression or exaust made its own path thru the headgasket past the metal ring to the coolant. Up for this weekend: ARP headstuds, ARP headerstuds and felpro 1133 MLS gaskets. Erich Attached Thumbnails __________________ 1989 Notch 5.0 homebuilt twin turbo 1997 GT 248a ATI Procharger P600B Intercooled

08-30-2006	#4 (permalink)
SpdBoss Crazy Adminz Guy Join Date: Aug 2006 Location: Abilene, TX Posts: 5,074 MySpace ID: WhtStng iTrader: (0) Friends: (47) Last Online: 1 Week Ago 04:47 AM Time Spent Online: 5 Days 1 Hour 52 Minutes 47 Seconds My Album's: SpdBoss's album My Garage: SpdBoss's Garage Thanks: 0 Thanked 2 Times in 2 Posts	yeah they are pricey but have proven to be well worth it. hope everything come out all right for ya so we can maybe get some vids of that going down the track. __________________ 95 Teal GT 5.0 - Exhaust, Bolt-ons, Gears, Cam ...... More to come!

10-10-2006	#8 (permalink)
NeverEnuff Pimp $hit yo! Join Date: Oct 2006 Location: In a house Posts: 825 MySpace ID: NVR_ENF iTrader: (0) Friends: (2) Last Online: 10-12-2011 11:53 PM Time Spent Online: 1 Day 7 Hours 24 Minutes 30 Seconds My Album's: NeverEnuff's album My Garage: NeverEnuff's Garage Thanks: 0 Thanked 0 Times in 0 Posts	You can always tighten the ARP head stud MORE than what they recommend you know to help...I think the ones on my old 89 said to go to something like 75 or 80...I had them at 90-95, and on my 99 I have them at 85-90 and I have NO problems with headgaskets...I am only running 15psi, but still no issues...we will see later when I up the boost once I finish learning how to tune. Good luck __________________ 35th GT-For sale... 25th LX Notch-Big Bore 32V? lol.

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08-30-2006	#2 (permalink)
1993SE White Trash Join Date: Aug 2006 Location: Oklahoma Posts: 1,352 iTrader: (0) Friends: (4) Last Online: 01-10-2011 05:31 PM Time Spent Online: 10 Hours 29 Minutes 27 Seconds My Album's: 1993SE's album Thanks: 0 Thanked 2 Times in 2 Posts	well, hopefully you get it fixed soon so you can take it back to the track

08-30-2006	#3 (permalink)
Erich Moderator Join Date: Aug 2006 Location: MD Posts: 235 iTrader: (0) Friends: (0) Last Online: 04-05-2010 01:38 PM Time Spent Online: 10 Minutes 55 Seconds My Album's: Erich's album My Garage: Erich's Garage Thanks: 0 Thanked 0 Times in 0 Posts	Yeah, it would suck to not get a "real run" in all season. It is interesting diagnosing stuff. It will be less interesting if I have problems with these 72 buck a piece headgaskets. Erich

08-31-2006	#5 (permalink)
uedlose Junior Member Join Date: Aug 2006 Location: Charles Town WV. Posts: 100 iTrader: (0) Friends: (1) Last Online: 12-26-2011 06:44 PM Time Spent Online: 4 Hours 22 Minutes 9 Seconds My Album's: uedlose's album Thanks: 0 Thanked 0 Times in 0 Posts	I would pull the top head bolts 5-8 ft# more then the lowers I did this on my wifes s/c car and it seemed to help some as the gaskets always blew on the top the same place as yours just a thought.

09-05-2006	#6 (permalink)
Erich Moderator Join Date: Aug 2006 Location: MD Posts: 235 iTrader: (0) Friends: (0) Last Online: 04-05-2010 01:38 PM Time Spent Online: 10 Minutes 55 Seconds My Album's: Erich's album My Garage: Erich's Garage Thanks: 0 Thanked 0 Times in 0 Posts	Got one side in. Studs and MLS gaskets. Of course on the first nut to tighten, my flippin torque wrench makes a big cracking noise. I loosened it and tightened again after making sure the wrench was still working. Erich

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