Cracked piston/broke ring lands on a turbo'd d series?
05-06-2004, 08:04 AM
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Cracked piston/broke ring lands on a turbo'd d series?
are there any tell tale signs of a fucked up ring land or cracked piston in a d-series?
mostly in engine noises. my d16a6 isn't smoking any more than usual but its making a really ugly noise some times.
i accidently boosted pretty hard this morning passing a truck with only 86 octane (poor college kid couldn't afford 91). I didnt hear knock but thats the only thing i can think of got messed up.
mostly in engine noises. my d16a6 isn't smoking any more than usual but its making a really ugly noise some times.
i accidently boosted pretty hard this morning passing a truck with only 86 octane (poor college kid couldn't afford 91). I didnt hear knock but thats the only thing i can think of got messed up.
05-06-2004, 08:12 AM
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Re: Cracked piston/broke ring lands on a turbo'd d series? (Pengo)
damn bro- 86 octane 
. look into the compression test, it should be a good place to start
. look into the compression test, it should be a good place to start
05-06-2004, 08:20 AM
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Re: Cracked piston/broke ring lands on a turbo'd d series? (ComputerJLT)
compression test. if it's good then be happy.
In the future, even if it means getting an 1/8th of a tank to get where you're going, realize that on an aftermarket boosted car without any kind of automatic timing retard, running 86 octane is a death warrent.
In the future, even if it means getting an 1/8th of a tank to get where you're going, realize that on an aftermarket boosted car without any kind of automatic timing retard, running 86 octane is a death warrent.
05-06-2004, 01:02 PM
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Re: Cracked piston/broke ring lands on a turbo'd d series? (racinskittle)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by racinskittle »</TD></TR><TR><TD CLASS="quote">Man, 86? Now that you think back....was it worth it? 
</TD></TR></TABLE>
yes; else i could not have got to school this week.
i bummed some money off a friend and put a 1/2 tanl of 91 in there
and i dont think its a cracked pison anymore; the car has quite a bit of valvetrain clatter and it seems to be just that but louder and it only happens when coasting (engine revs stay about the same) not accellerating or decelerating.
oh and even if i didnt have a cracked pison i'm 90% sure the car would fail a comp/leakdown test miserably
. i know the piston rings are fried or about fried; the engine has over 135k miles on it and the douche that had the car before me just slapped the turbo on; probably didnt even pull the valve cover to check anything. so yeah.
I'm going to pull the oil pan off tonight when its not a thousand ******* degrees outside and look at the botom of the pistons to see if its cracked or not.
</TD></TR></TABLE>yes; else i could not have got to school this week.
i bummed some money off a friend and put a 1/2 tanl of 91 in there
and i dont think its a cracked pison anymore; the car has quite a bit of valvetrain clatter and it seems to be just that but louder and it only happens when coasting (engine revs stay about the same) not accellerating or decelerating.
oh and even if i didnt have a cracked pison i'm 90% sure the car would fail a comp/leakdown test miserably
. i know the piston rings are fried or about fried; the engine has over 135k miles on it and the douche that had the car before me just slapped the turbo on; probably didnt even pull the valve cover to check anything. so yeah. I'm going to pull the oil pan off tonight when its not a thousand ******* degrees outside and look at the botom of the pistons to see if its cracked or not.
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05-06-2004, 04:04 PM
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Re: (warwagon)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by warwagon »</TD></TR><TR><TD CLASS="quote">who the hell selz 86 octane!!!! </TD></TR></TABLE>
good ol west texas. markup was a bitch too as this town i was in has like 3 major gas stations
good ol west texas. markup was a bitch too as this town i was in has like 3 major gas stations
$2.17 for 93 at Sunoco and $2.23 for 95 
05-06-2004, 06:37 PM
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Re: (Sideout)
well turns out #3 cylinder is fucked.
either broke ring lands or cracked piston
i'm not real surprised though, i've been pushing this car like mad; 12psi on stock internals and my timing maps are pretty ugly.
this engine was already on its last leg when i got it; i just chopped it off :D
i guess this means i can find a d16z6 long block now :D
either broke ring lands or cracked piston
i'm not real surprised though, i've been pushing this car like mad; 12psi on stock internals and my timing maps are pretty ugly.
this engine was already on its last leg when i got it; i just chopped it off :D
i guess this means i can find a d16z6 long block now :D
05-06-2004, 07:52 PM
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Re: (Pfieffdog)
My car had not the slightest bit of smoke, only when i accelerated when the car was cold, and guess what? I removed all the pistons to find that EVERY single one had cracked ringlands.
BTW, you said it was worth it because you were able to get to school, but now that cylinder 3 is fucked, how do you plan on getting to school?
BTW, you said it was worth it because you were able to get to school, but now that cylinder 3 is fucked, how do you plan on getting to school?
05-06-2004, 08:12 PM
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Re: (m R g S r)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r »</TD></TR><TR><TD CLASS="quote">My car had not the slightest bit of smoke, only when i accelerated when the car was cold, and guess what? I removed all the pistons to find that EVERY single one had cracked ringlands.
BTW, you said it was worth it because you were able to get to school, but now that cylinder 3 is fucked, how do you plan on getting to school?</TD></TR></TABLE>
i only have class wenesday and friday;
i have my 300z and my dad's truck. i didnt today.
but this blowing up gives me an exuse to find a d16z6 longblock and build a bad *** D
since i found a buyer for my Z
BTW, you said it was worth it because you were able to get to school, but now that cylinder 3 is fucked, how do you plan on getting to school?</TD></TR></TABLE>
i only have class wenesday and friday;
i have my 300z and my dad's truck. i didnt today.
but this blowing up gives me an exuse to find a d16z6 longblock and build a bad *** D
since i found a buyer for my Z
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