OMG HELP!!! Catastrophic problem!
02-23-2009, 04:47 PM
#21
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I found a reputable shop on the outskirts of town saying they have a used but in nice condition set of 243 LS2 heads off a GTO with Gold PRC Springs on it. He would remove both heads replace all the gaskets (including the head gaskets, intake gaskets, valve seals, etc..) and put new lifters in all for $1250. Still not 100% sure that the complete lack of compression in cylinder 1 isn't a hole in a piston instead of a head problem (although I don't run nitrous), but I can't afford to tear it down twice. He also said he'd switch out the springs with regular LS6 springs if I'd rather have those.
3 questions
Is it possible no compression in a cylinder is caused by something electrical or the head gasket?
Does that 243 GTO set of heads sound like it will work well on a 99 T/A fairly well w/o a custom tune?
Is this a good deal for everything?
P.S. My casting I currently have on my heads is in the 800's, but I don't remember the exact number.
3 questions
Is it possible no compression in a cylinder is caused by something electrical or the head gasket?
Does that 243 GTO set of heads sound like it will work well on a 99 T/A fairly well w/o a custom tune?
Is this a good deal for everything?
P.S. My casting I currently have on my heads is in the 800's, but I don't remember the exact number.
Last edited by smgbad; 02-23-2009 at 05:06 PM.
02-23-2009, 05:16 PM
#22
02-23-2009, 08:59 PM
#24
So.... Your wife gave you 1200 bucks to work with? I would say don't buy those heads just yet, you need to find out if the problem IS your heads, or if it's something else, like say, a head gasket. Also, for example, if you managed to drop a valve (which I doubt in this case, just giving an example) you could also have bottom end damage on the motor (i.e. pistons, rods, etc etc)
So you really need to find out what the REAL issue is before you spend a lot of money on the wrong thing.
So you really need to find out what the REAL issue is before you spend a lot of money on the wrong thing.
02-23-2009, 09:12 PM
#25
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dunno for sure but cant a lobe on the cam be ground down enough to keep the exhaust valve open causing no compression and a slight tick from the piston poping the valve up and down??? i am by no means a motor guy but is that a common possability
02-23-2009, 10:47 PM
#26
I bought a bone stock 1998 TransAm a few years ago. It had a terrible miss in it, shook the whole car. I drove it 10 minutes to my house, never made a noise the whole time, had good oil pressure.
Got it home and later did a compression test. Found one cylinder dead. I was hoping for a blown gasket, instead I found this.
I sold the engine to a guy who honed one cylinder, put a used piston/rod in it and still drives it today.
Got it home and later did a compression test. Found one cylinder dead. I was hoping for a blown gasket, instead I found this.
I sold the engine to a guy who honed one cylinder, put a used piston/rod in it and still drives it today.
Last edited by 9000th01ss; 03-18-2009 at 12:17 AM.
02-23-2009, 11:03 PM
#28
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dude post a video of the sound
does it sound like loose change in the engine bay, mine did the same thing and on the way home it shut off when i went to shift i pulled over and tried to crank it and threw a rod... hate to be the person to give you bad news but its internal stop driving it and take it apart no joke, 1200 might not be enough and your heads might not even be the problem so don't spend your money just yet
does it sound like loose change in the engine bay, mine did the same thing and on the way home it shut off when i went to shift i pulled over and tried to crank it and threw a rod... hate to be the person to give you bad news but its internal stop driving it and take it apart no joke, 1200 might not be enough and your heads might not even be the problem so don't spend your money just yet
Last edited by Fotis; 02-23-2009 at 11:11 PM.
02-24-2009, 01:39 AM
#29
Formerly darynC-10/23/10
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imo i would get the thing tore down rather than post what we all think on here. no one is going to know exactly what it is. grab a wrench and get at it !!!!!!!!!!!!!!
and yeah them 234 heads will work fine.
and yeah them 234 heads will work fine.
02-24-2009, 02:56 AM
#30
^^^^^
tear it down first, find the problem.....tell us.... then we will give you options and opinions of what to do next. until then we cant help you..... dont ask about modding it until you know what needs to be fixed.... mods are useless unless everything works properly. i also wouldnt be surprised if lucas, or any of the other junk you added to the engine made it worse.... running something that is thick in your crank case causes stress on the internals, which is why 99% of the time when people start adding junk other than oil to their motor things start to go south.
now onto the problem at hand.... current things that could cause a dead cyl....
1: head gasket
2: bad piston rings
3: broken connecting rod like above.....although that would produce a LOT of noise....and a hole in the block more than likely
4: burned, warped or cracked valve(s)
5: crack in the cyl wall
6: crack or opening in the head (not near an oil or water passage, so this means that they wont necessarly mix)
these are just to name a few things..... so until your motor is torn down, you wont know the cause or how to fix it. once you know that then we can be of further assistance....if its something thats going to cost a lot to repair, you can find a used shortblock or long block for a decent price, slap it in and go. even find one with heads and a cam already installed for a fair price here on tech in the classifieds section. either way. you would need headers/tune afterwards, since you seem to be on a budget i dont see that happening
but who knows. we arent your "ls1buddies" so you dont have to listen to us
j/k
tear it down first, find the problem.....tell us.... then we will give you options and opinions of what to do next. until then we cant help you..... dont ask about modding it until you know what needs to be fixed.... mods are useless unless everything works properly. i also wouldnt be surprised if lucas, or any of the other junk you added to the engine made it worse.... running something that is thick in your crank case causes stress on the internals, which is why 99% of the time when people start adding junk other than oil to their motor things start to go south.
now onto the problem at hand.... current things that could cause a dead cyl....
1: head gasket
2: bad piston rings
3: broken connecting rod like above.....although that would produce a LOT of noise....and a hole in the block more than likely
4: burned, warped or cracked valve(s)
5: crack in the cyl wall
6: crack or opening in the head (not near an oil or water passage, so this means that they wont necessarly mix)
these are just to name a few things..... so until your motor is torn down, you wont know the cause or how to fix it. once you know that then we can be of further assistance....if its something thats going to cost a lot to repair, you can find a used shortblock or long block for a decent price, slap it in and go. even find one with heads and a cam already installed for a fair price here on tech in the classifieds section. either way. you would need headers/tune afterwards, since you seem to be on a budget i dont see that happening
but who knows. we arent your "ls1buddies" so you dont have to listen to us
j/k
02-24-2009, 11:50 AM
#33
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if anything tell her that if she makes you sell it she can't ever bitch about anything for the next ten year (the reason i say ten is cause after ten regardless of your age you just wont give a **** if they bitch or not)
02-24-2009, 01:46 PM
#34
02-24-2009, 06:07 PM
#37
The oil pickup was dented slightly.
Scarey it was in a bone stock A4 car with 2.73's.
02-26-2009, 10:57 PM
#38
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too many posts to read. base engine malfunction will not cause limp home, but it could cause the shitty performance, which could be mistaken for limp home i suppose. only thing that will cause limp home is a problem in throttle pos sensor. find someone with a tech 2 who can look at the engine data and interpret it to be typical or not. these problems are very simple to figure out for someone who knows how to read and interpret engine data.
02-26-2009, 11:07 PM
#39
too many posts to read. base engine malfunction will not cause limp home, but it could cause the shitty performance, which could be mistaken for limp home i suppose. only thing that will cause limp home is a problem in throttle pos sensor. find someone with a tech 2 who can look at the engine data and interpret it to be typical or not. these problems are very simple to figure out for someone who knows how to read and interpret engine data.
OP: any news btw?!?
02-27-2009, 08:04 PM
#40
too many posts to read. base engine malfunction will not cause limp home, but it could cause the shitty performance, which could be mistaken for limp home i suppose. only thing that will cause limp home is a problem in throttle pos sensor. find someone with a tech 2 who can look at the engine data and interpret it to be typical or not. these problems are very simple to figure out for someone who knows how to read and interpret engine data.