Turbo Malibu Blown Headgasket at 20 psi

bautowreckers · 06-24-2009, 08:16 PM

took the car to the track last week at popped the headgasket at the first run at the track, didnt blow till second gear

just plain john · 07-02-2009, 07:28 AM

Bummer. First run ever? I dread that happening to me (if I ever get the damnned thing finished).

NOCOOLER · 07-02-2009, 03:46 PM

Quote:

Originally Posted by bautowreckers

took the car to the track last week at popped the headgasket at the first run at the track, didnt blow till second gear

How much knock did you have when it let go?

ronbuick · 07-06-2009, 05:56 PM

how about a little more info on how and why they popped?? that way it will lessen of it happening again.

Ron

gbsean · 07-06-2009, 08:03 PM

any data logs...what gas and timing...etc....

bautowreckers · 07-10-2009, 08:32 AM

that much boost, my knock gauge shot up to double red real fast i figured if i shift into 3rd it would bring the rpms down and get rid of the knock, instead it got rid of my headgasket.

bautowreckers · 07-10-2009, 08:32 AM

completly stock headgaskets.

NOCOOLER · 07-10-2009, 09:21 AM

Quote:

Originally Posted by bautowreckers

that much boost, my knock gauge shot up to double red real fast i figured if i shift into 3rd it would bring the rpms down and get rid of the knock, instead it got rid of my headgasket.

That'll do it.

1st time is a learning experience - 2nd time is stupidity.

Tune for zero knock

bautowreckers · 07-10-2009, 03:50 PM

completly from pan to heads. cometic headgaskets and waiting to get some scan tools for the car before i run in again, i dont want to hear that noise coming from my motor again.

VxTurboxV · 09-02-2009, 01:53 AM

Throw on some meth injection while your at it! I run 25-28 lbs on OEM gaskets with 91 octane and alky

ronbuick · 09-02-2009, 10:46 AM

ba, how much boost??, what fuel were using??, what chip in your ECM??, what kind or who's fuel pump??, injector size??, any type of scan tools used, and do not run 25-28lbs. bost with alky on a single nozzle, 20-21lbs only on a single nozzle on pump gas, give us more info so we can help or just keep a poppin.

Ron

VxTurboxV · 09-02-2009, 11:40 AM

Quote:

Originally Posted by ronbuick

ba, how much boost??, what fuel were using??, what chip in your ECM??, what kind or who's fuel pump??, injector size??, any type of scan tools used, and do not run 25-28lbs. bost with alky on a single nozzle, 20-21lbs only on a single nozzle on pump gas, give us more info so we can help or just keep a poppin.

Ron

Combo is in my sig....if you were talking to me.

Quote:

"with alky on a single nozzle, 20-21lbs only on a single nozzle on pump gas"

As long as your tuning for 0* KR you can run as much boost as you r combo allows, until detonation occurs. This number will usually be different for all engines/combos.

I can get away with a bit more boost/timing because my car weighs so much less than the g-bodys. But friends with t-types run 23-25 lbs of boost all the time with no issues....some more. One is using eric's chip and another a fullthrottle extender series. (i use the extender series as well). Another uses a custom burnt chip and only runs 18* timing and up to 30psi at the track on 93 octane and meth injection.

It's all in the tune....

I personally found 25lbs and 25* of timing seems to be the sweet spot on my car. But I have ran more boost and less timing in the past with no issues....yet.

Grumpy · 09-02-2009, 11:57 AM

Quote:

Originally Posted by VxTurboxV

But friends with t-types run 23-25 lbs of boost all the time with no issues....some more. One is using eric's chip and another a fullthrottle extender series.
It's all in the tune....

we ran that for years with Melissa's old no brainer mid 11 set up

Some people are just scared of Alky

06-24-2009, 08:16 PM	#1 (permalink)
bautowreckers Registered User Join Date: Jun 2009 Location: New Jersey Posts: 62	Turbo Malibu Blown Headgasket at 20 psi took the car to the track last week at popped the headgasket at the first run at the track, didnt blow till second gear

07-06-2009, 05:56 PM	#4 (permalink)
ronbuick Registered User Join Date: Feb 2002 Location: emmett, Id. Posts: 88	how about a little more info on how and why they popped?? that way it will lessen of it happening again. Ron __________________ Ron Neisler, Emmett,Id. 1987 T/R 11.69@117, 2009 G8 GT, 13.61@104, 2.18 60'

07-06-2009, 08:03 PM	#5 (permalink)
gbsean Not a Democrat any more.. Join Date: Jul 2005 Location: Flanders, N.J. Posts: 14,338	any data logs...what gas and timing...etc.... __________________ UPCOMING BPG EVENTS 2010 Stage 1 CONVENTION July 30,31 Aug 1 2010 2011 TTA T-Type T-PARTY July 29,30,31 2011 11.599 @ 119.91 with issues Sean Ryder Buick Performance Group Chairman www.buickperformancegroup.com http://www.magnabuick.com/ see thread for Engine Specs http://www.turbobuicks.com/forums/wa...tml#post680751 happy now Rich

07-10-2009, 08:32 AM	#6 (permalink)
bautowreckers Registered User Join Date: Jun 2009 Location: New Jersey Posts: 62	yes it was my first run with that turbo and that much boost, my knock gauge shot up to double red real fast i figured if i shift into 3rd it would bring the rpms down and get rid of the knock, instead it got rid of my headgasket.

07-10-2009, 08:32 AM	#7 (permalink)
bautowreckers Registered User Join Date: Jun 2009 Location: New Jersey Posts: 62	also they were completly stock headgaskets.

07-02-2009, 07:28 AM	#2 (permalink)
just plain john Registered User Join Date: Apr 2008 Posts: 44	Bummer. First run ever? I dread that happening to me (if I ever get the damnned thing finished).

07-10-2009, 03:50 PM	#9 (permalink)
bautowreckers Registered User Join Date: Jun 2009 Location: New Jersey Posts: 62	so i rebuilt the motor completly from pan to heads. cometic headgaskets and waiting to get some scan tools for the car before i run in again, i dont want to hear that noise coming from my motor again.

09-02-2009, 01:53 AM	#10 (permalink)
VxTurboxV Registered User Join Date: Oct 2002 Location: Wichita KS Posts: 2,086	Throw on some meth injection while your at it! I run 25-28 lbs on OEM gaskets with 91 octane and alky __________________ 86 Rx-7 GXL Hybrid 86 Grand National motor and trans. TRW pistons, Webber ported IRONS, Extender chip,Translator plus,PT68 turbo,CPT 9" Competition converter, powerglide, Trans Cooler, 55lb inj's, 255lph walbro fuel pump, 10mm Race Wires, Adj. FP Regulator,RJC PP ,FMIC 18x32 spearco bar&plate, Custom 3 inch mandrel DP, postons X-over pipe. deltagate WG, 3.27 gears, WB 02, 26"x9 slicks, Progressive alky, 1 2gpm nozzle pre-turbo 1 15gpm nozzle post-turbo. 91 octane 25lbs/25* timing Best E.T. 10.65 Best MPH 131.4 Still tuning.

09-02-2009, 10:46 AM	#11 (permalink)
ronbuick Registered User Join Date: Feb 2002 Location: emmett, Id. Posts: 88	ba, how much boost??, what fuel were using??, what chip in your ECM??, what kind or who's fuel pump??, injector size??, any type of scan tools used, and do not run 25-28lbs. bost with alky on a single nozzle, 20-21lbs only on a single nozzle on pump gas, give us more info so we can help or just keep a poppin. Ron __________________ Ron Neisler, Emmett,Id. 1987 T/R 11.69@117, 2009 G8 GT, 13.61@104, 2.18 60'

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