Help diagnose what went wrong
it really is the world's longest motor swap
08-15-2009, 03:52 PM
#6
w0rld's l0ngest m0t0rswap
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Join Date: Sep 2007
Location: Torrance, CA
Posts: 676
i'm guessing its the head i bought used from pierre's Z last year is cracked. or maybe the block is. who ****ing knows all i know is that i am getting no mercy at all time for a rebuild even before i finish **** every****ing thing
08-15-2009, 03:56 PM
#7
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check and make sure its not warped
08-15-2009, 03:59 PM
#9
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08-15-2009, 09:02 PM
#13
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its a turbo motor
its just a guess, but normally when a HG goes for no apparent reason it tends to be a warped head
its not always obvious if your not looking for it
hes smiting you for touching yourself at night
its just a guess, but normally when a HG goes for no apparent reason it tends to be a warped head
its not always obvious if your not looking for it
hes smiting you for touching yourself at night
08-15-2009, 11:03 PM
#15
w0rld's l0ngest m0t0rswap
Thread Starter
Join Date: Sep 2007
Location: Torrance, CA
Posts: 676
you think maybe that huge backfire i had helped screw it too? yeah i might as well make sure they're all torqued down, wouldn't that + gasket take care of any 1/1000th inch of warp?
08-17-2009, 12:53 PM
#18
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Join Date: Sep 2005
Location: lemont, Illinois
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any head i buy i take to the machine shop. usually check it out for free. probably warped before you put it on. a backfire wont really warp a head. over heating does or usinge the wrong torque pattern or letting it sit to long on a non flat surface or not unbolting it in the right pattern or valves hitting pistons can do it.
09-16-2009, 09:55 PM
#20
w0rld's l0ngest m0t0rswap
Thread Starter
Join Date: Sep 2007
Location: Torrance, CA
Posts: 676
Help diagnose what went wrong
So as you know I had my engine running until it patrick swayzed and got oil in the water, which is a mystery. Its all torn down now and this is what I'm looking at.
The head has passages where water COULD be flowing but the block doesn't even have passages for it to go! Nevermind the fact that the gasket blocks it off...
So what else could have gone wrong? The pistons are looking clean though and so is everything else. What else should I be looking for
The head has passages where water COULD be flowing but the block doesn't even have passages for it to go! Nevermind the fact that the gasket blocks it off...
So what else could have gone wrong? The pistons are looking clean though and so is everything else. What else should I be looking for
09-16-2009, 10:11 PM
#21
Did it overheat? (I can't remember... and you started a new thread instead of continuing your other).
The ports on the headgasket depend on which head / block combination you order it for. I've done more than a handful of L28 head jobs and found that some are made diff than others. Hell, my MLS headgasket from MSA didn't have the right ports, so I drilled them out after another head job. I haven't raced it since then to see how hot it will get under a heavy load, but running on the freeway in 100*+ is cooler than it used to be.
See my thread on that: https://www.zdriver.com/forums/showt...+gasket&page=2
The ports on the headgasket depend on which head / block combination you order it for. I've done more than a handful of L28 head jobs and found that some are made diff than others. Hell, my MLS headgasket from MSA didn't have the right ports, so I drilled them out after another head job. I haven't raced it since then to see how hot it will get under a heavy load, but running on the freeway in 100*+ is cooler than it used to be.
See my thread on that: https://www.zdriver.com/forums/showt...+gasket&page=2
09-17-2009, 09:43 AM
#24
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Join Date: Jun 2004
Location: Sacramento, CA
Posts: 833
What brand headgasket are you using? In my experience, the Fel-Pro gaskets do not match perfectly with the L series motors, and I kept getting oil and water mix. I eventually went and sourced a Beck/Arnley gasket from Napa, and I haven't had that problem since.
09-17-2009, 10:22 AM
#25
Registered User
Join Date: Feb 2009
Posts: 303
blown head gasket
I stand by fel pro gaskets been using them since 1985 and have many Z-friends and techs who swear by fel-pro gaskets. In my opinion the cyl-head is the problem until you do a professional pressure test and also for warpage....o/k.
