bad wrist pin

SadleUp · December 21st, 2010, 11:04 PM

I thought it might have been some timing chain slap, so i took the cover off and found my timing chains wore through the tensioner arms by a significant amount and had alot of slack. I fixed those and thought my problem was solved, but everything was still there.

stal94gt · December 21st, 2010, 11:05 PM

sounds like a bad lifter. repeat

SadleUp · December 21st, 2010, 11:07 PM

Originally Posted by stal94gt

man it sounds more like a lifter. all your symptoms leads me to think they are bad

I've had the valve cover off while listening with a scope...you can still hear it more internally than anything.

stal94gt · December 21st, 2010, 11:09 PM

does it sound like an exhaust leak? or a knock sound. its real hard to determin a sound

SadleUp · December 21st, 2010, 11:12 PM

I wish i made a video before i tore it apart. I did check for exhaust, but found nothing. Towards the end it got very loud and started sounding more like a knock. Loud enough to where I was scared to turn it on because it sounded like something was about to go seriously wrong.

SadleUp · December 21st, 2010, 11:13 PM

Since the mechanic swore that it was upper valvetrain, I bought a set of heads from someone just to do a quick swap...they'll be here on friday.

stal94gt · December 21st, 2010, 11:17 PM

sure its not a spun bearing? has the car ever seen spray?

SadleUp · December 21st, 2010, 11:22 PM

i figured i would have seen some metal if it were...and to the best of my knowledge, no

stal94gt · December 21st, 2010, 11:24 PM

you could have had detonation and eyed out your connecting rod. that wont leave metal just make a knock noise.

SadleUp · December 21st, 2010, 11:27 PM

what exactly is eyed out?

DickH · December 22nd, 2010, 05:26 AM

I believe he is saying you could have elongated/warped the hole the pin sits in. And to go back to my other post, what I was told is you can pull the piston down far enough to get to the pin while keeping the piston rings in the cylinder. I have read/heard that from a couple places but im not sure if its true.

If you have your heads off and have the timing cover off, you might as well just pull your rotating assembly and see what happened. No need to guess and waste money after you take a good look at the actual parts.

stal94gt · December 22nd, 2010, 10:01 AM

Originally Posted by DickH

I believe he is saying you could have elongated/warped the hole the pin sits in. And to go back to my other post, what I was told is you can pull the piston down far enough to get to the pin while keeping the piston rings in the cylinder. I have read/heard that from a couple places but im not sure if its true.

If you have your heads off and have the timing cover off, you might as well just pull your rotating assembly and see what happened. No need to guess and waste money after you take a good look at the actual parts.

he is selling the car.

SadleUp · December 22nd, 2010, 01:39 PM

worst case scenario I'll just put it back together and sell it as is to someone who wants to rebuild it

superbeef1000 · December 22nd, 2010, 03:23 PM

sounds to me like a rod bearing,,, you can pull the oil filter off cut it open pull out the filter ant look at it while it is spread out to see if there are any gold metal flakes in it,,,,,i could see how changing the rod from under the engine would work that could be a big time time saver

December 22nd, 2010, 05:26 AM	#31
DickH MM Fanatic 2003 gt 5.4 32v on the way Join Date: May 2007 Location: Omaha Posts: 4,191 iTrader: 2 reviews	I believe he is saying you could have elongated/warped the hole the pin sits in. And to go back to my other post, what I was told is you can pull the piston down far enough to get to the pin while keeping the piston rings in the cylinder. I have read/heard that from a couple places but im not sure if its true. If you have your heads off and have the timing cover off, you might as well just pull your rotating assembly and see what happened. No need to guess and waste money after you take a good look at the actual parts. __________________ 2003 Mustang gt - usual mods - slowly working on 5.4 swap 2004 srt4 - Stock DD/winter beater Click here for your tuning needs Before asking a gearing related question click THIS link and enjoy all your saved time.

December 22nd, 2010, 03:23 PM	#34
superbeef1000 Hardcore Enthusiast Join Date: Aug 2006 Location: mesa , arizona Posts: 1,474 iTrader: 2 reviews	sounds to me like a rod bearing,,, you can pull the oil filter off cut it open pull out the filter ant look at it while it is spread out to see if there are any gold metal flakes in it,,,,,i could see how changing the rod from under the engine would work that could be a big time time saver __________________ a bunch of stuff to make my car faster http://www.moddedmustangs.com/forums...e-member-1497/

Threads Similar to: bad wrist pin
Thread	Thread Starter	Forum	Replies	Last Post
It's all in the wrist	06RedfireGT	The Clubhouse	59	December 10th, 2009 11:19 PM
Fractured my wrist	Arsenal	The Clubhouse	20	January 20th, 2009 11:14 PM
wrist pins	cali 5.0	5.0 Mustangs	9	October 21st, 2007 10:44 PM

December 21st, 2010, 11:04 PM	#21
SadleUp Regular 2011 Mustang 5.0 Join Date: Jun 2010 Location: Fort Walton Beach, FL Posts: 84 iTrader: 0 reviews	I thought it might have been some timing chain slap, so i took the cover off and found my timing chains wore through the tensioner arms by a significant amount and had alot of slack. I fixed those and thought my problem was solved, but everything was still there.

December 21st, 2010, 11:05 PM	#22
stal94gt I Post Entirely Way Too Much 2003 mustang v6 ;) slow Join Date: May 2010 Location: eglin afb florida Posts: 10,197 iTrader: 2 reviews	sounds like a bad lifter. repeat

December 21st, 2010, 11:09 PM	#24
stal94gt I Post Entirely Way Too Much 2003 mustang v6 ;) slow Join Date: May 2010 Location: eglin afb florida Posts: 10,197 iTrader: 2 reviews	does it sound like an exhaust leak? or a knock sound. its real hard to determin a sound

December 21st, 2010, 11:12 PM	#25
SadleUp Regular 2011 Mustang 5.0 Join Date: Jun 2010 Location: Fort Walton Beach, FL Posts: 84 iTrader: 0 reviews	I wish i made a video before i tore it apart. I did check for exhaust, but found nothing. Towards the end it got very loud and started sounding more like a knock. Loud enough to where I was scared to turn it on because it sounded like something was about to go seriously wrong.

December 21st, 2010, 11:13 PM	#26
SadleUp Regular 2011 Mustang 5.0 Join Date: Jun 2010 Location: Fort Walton Beach, FL Posts: 84 iTrader: 0 reviews	Since the mechanic swore that it was upper valvetrain, I bought a set of heads from someone just to do a quick swap...they'll be here on friday.

December 21st, 2010, 11:17 PM	#27
stal94gt I Post Entirely Way Too Much 2003 mustang v6 ;) slow Join Date: May 2010 Location: eglin afb florida Posts: 10,197 iTrader: 2 reviews	sure its not a spun bearing? has the car ever seen spray?

December 21st, 2010, 11:22 PM	#28
SadleUp Regular 2011 Mustang 5.0 Join Date: Jun 2010 Location: Fort Walton Beach, FL Posts: 84 iTrader: 0 reviews	i figured i would have seen some metal if it were...and to the best of my knowledge, no

December 21st, 2010, 11:24 PM	#29
stal94gt I Post Entirely Way Too Much 2003 mustang v6 ;) slow Join Date: May 2010 Location: eglin afb florida Posts: 10,197 iTrader: 2 reviews	you could have had detonation and eyed out your connecting rod. that wont leave metal just make a knock noise.

December 21st, 2010, 11:27 PM	#30
SadleUp Regular 2011 Mustang 5.0 Join Date: Jun 2010 Location: Fort Walton Beach, FL Posts: 84 iTrader: 0 reviews	what exactly is eyed out?

December 22nd, 2010, 01:39 PM	#33
SadleUp Regular 2011 Mustang 5.0 Join Date: Jun 2010 Location: Fort Walton Beach, FL Posts: 84 iTrader: 0 reviews	worst case scenario I'll just put it back together and sell it as is to someone who wants to rebuild it

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

All times are GMT -4. The time now is 05:45 PM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.