UNLUCKY? - Page 5 - ZR-1 Net Registry Forums

10-27-2006

Quote:

Originally Posted by RedZR

Jeff youâ€™ve got me thinking about a PC job! Do you have pictures of black w/red letters?

Yup

RedZR · 10-27-2006

Tyler,

You sound as if you have experience with this. Just how common of a problem is this- do these bolts often come out?

Dan

Quote:

Originally Posted by Tyler Townsley

This is a little late but I thought I would post it for future reference. Find a borescope borrow it, use it to look before you take it apart. Get a good vacuum cleaner neck it down to a flex hose that fits into spark plug hole and rotate piston to bottom and suck until it comes out, also can sometimes use a flex magnet. I also have used air pressure through a flexable hose when the motor was rotated with the exhaust valves open, used the air until it bounced the dropped screw(yeah I dropped it down the IH when the intake exhaust valve was open) around and out.

Tyler

8upZR1 · 10-27-2006

I just wanted to chime in and say that I too found those marks that the screw threads left on your head/piston when I took my motor apart, although my issue was a head gasket. Aparently the screw(s) bounced around for a while and then went out of the exhaust. All of my cylinders looked this way. I dunno where my screws came from though as my secondary throttles ahd all of their fasteners.

My daily driver/family transport is a 05 Toyota Scion Xb. A month after I got the car I sucked a dime through the motor. Yes 10 cents. It bent the ground strap on the plug and then made an exit. I found the dime in the cat. I was very lucky but it is very possible that relatively large objects can pass through a motor without major damage.

Tyler Townsley · 10-29-2006

Quote:

Originally Posted by RedZR

Tyler,

You sound as if you have experience with this. Just how common of a problem is this- do these bolts often come out?

Dan

Just make sure you tape off the IH openings after you pull the plenum, it keeps one from droping things into the motor.

Tyler

blackjack · 10-31-2006

i hate to tell you this,but sometimes the screw will beat the piston just enough to make it collapse a bit and squeeze the top ring ,preventing it from mooving freely,resulting in a bit less compression in that cylinder...the engine will still run very good,though....just a tought....ive seen it happen
bj

Bill · 10-31-2006

I talked to several knowledgeable people last weekend at the ZR1 gathering west. Like 8up said,comments were made about having found screw marks in combustion chambers, but no screws. I guess that the screw can go out the exhaust.

bj I did check a compression check on all cylinders when I started low was 180 high was 198 and the affected cylinder was 185 so I don't think I had that kind of damage.

The more imput we have here the more it might help me and others in the future
Bill

WB9MCW · 11-01-2006

IM GONNA LOCKTITE MY LOOSE SCREWS....LOL...I HAD TO SAY IT!!!

Tyler Townsley · 11-01-2006

Quote:

Originally Posted by WB9MCW

IM GONNA LOCKTITE MY LOOSE SCREWS....LOL...I HAD TO SAY IT!!!

I hope you made sure to avoid your eardrums.

Tyler

blackjack · 11-02-2006

bj

Jim Jones · 11-02-2006

WOW!! Great educational thread!! Bill, I am thrilled for you that everything worked out as well as it did! As I was reading it, I was getting that sinking feeling at the beginning, you know, the one that says, 'what else can go wrong with my baby' feeling. As everyone began to chip in with suggestions, I started feeling better. Congrats on solving the problem!

I hope

that I never have this problem, but if I do, I'm glad that there is information like this to help me out. Thanks!

Jim

10-27-2006	#43
8upZR1 Join Date: Jun 2006 Location: Thunderbolt, Ga. Posts: 253	Re: UNLUCKY? I just wanted to chime in and say that I too found those marks that the screw threads left on your head/piston when I took my motor apart, although my issue was a head gasket. Aparently the screw(s) bounced around for a while and then went out of the exhaust. All of my cylinders looked this way. I dunno where my screws came from though as my secondary throttles ahd all of their fasteners. My daily driver/family transport is a 05 Toyota Scion Xb. A month after I got the car I sucked a dime through the motor. Yes 10 cents. It bent the ground strap on the plug and then made an exit. I found the dime in the cat. I was very lucky but it is very possible that relatively large objects can pass through a motor without major damage. __________________ IT IS THE FATE OF THE INNOCENT TO MEET WITH DEATH!!!

10-31-2006	#45
blackjack Join Date: Aug 2005 Location: north of montreal Posts: 510	Re: UNLUCKY? i hate to tell you this,but sometimes the screw will beat the piston just enough to make it collapse a bit and squeeze the top ring ,preventing it from mooving freely,resulting in a bit less compression in that cylinder...the engine will still run very good,though....just a tought....ive seen it happen bj

10-31-2006	#46
Bill Join Date: Mar 2004 Location: Sacramento, CA. Posts: 141	Re: UNLUCKY? I talked to several knowledgeable people last weekend at the ZR1 gathering west. Like 8up said,comments were made about having found screw marks in combustion chambers, but no screws. I guess that the screw can go out the exhaust. bj I did check a compression check on all cylinders when I started low was 180 high was 198 and the affected cylinder was 185 so I don't think I had that kind of damage. The more imput we have here the more it might help me and others in the future Bill

11-01-2006	#47
WB9MCW Join Date: Dec 2003 Location: McHenry, Il. Posts: 6,607	Re: UNLUCKY? IM GONNA LOCKTITE MY LOOSE SCREWS....LOL...I HAD TO SAY IT!!! __________________ http://i119.photobucket.com/albums/o...9mcw/SIG-2.jpg http://i119.photobucket.com/albums/o128/wb9mcw/vcm.gif "The Budget should be balanced, the Treasury should be refilled, public debt should be reduced, the arrogance of officialdom should be tempered and controlled, and the assistance to foreign lands should be curtailed, lest Rome will become bankrupt. People must again learn to work instead of living on public assistance." - Cicero, 55 BC " We the people are the rightful masters of both Congress and the courts, not to overthrow the Constitution but to overthrow the men who pervert the Constitution." - Abraham Lincoln

11-02-2006	#49
blackjack Join Date: Aug 2005 Location: north of montreal Posts: 510	Re: UNLUCKY? bj

11-02-2006	#50
Jim Jones Join Date: Apr 2005 Location: I'm in a constant state of euphoria in the Z! Posts: 237	Re: UNLUCKY? WOW!! Great educational thread!! Bill, I am thrilled for you that everything worked out as well as it did! As I was reading it, I was getting that sinking feeling at the beginning, you know, the one that says, 'what else can go wrong with my baby' feeling. As everyone began to chip in with suggestions, I started feeling better. Congrats on solving the problem! I hope that I never have this problem, but if I do, I'm glad that there is information like this to help me out. Thanks! Jim __________________ Life's too short to be unhappy! [IMG]http://i4.photobucket.com/albums/y128/koolaid117/Montage.gif[/IMG] Last edited by Jim Jones; 11-02-2006 at 09:10 AM.