LS1TECH - Camaro and Firebird Forum Discussion

Broken piston maybe??

Thread Tools
 
Search this Thread
 
Old Jun 22, 2007 | 02:41 PM
Share
  #1  
Randy_S's Avatar
Randy_S
Thread Starter
TECH Regular
iTrader: (1)
 
Joined: Jun 2005
Posts: 423
Likes: 0
From: Alvin Tx
Default Broken piston maybe??
Ok, this is like Where's Waldo. Can anyone find the problem spot on this motor. It only had 3,400 miles on the clock with no spray/charger and no track time at all. Hope yall enjoy my agony.


Reply
0
Old Jun 22, 2007 | 02:44 PM
Share
  #2  
ex-SS-ve's Avatar
ex-SS-ve
TECH Addict
iTrader: (9)
 
Joined: Dec 2002
Posts: 2,290
Likes: 0
Default
this the 408?
Reply
0
Old Jun 22, 2007 | 02:45 PM
Share
  #3  
Randy_S's Avatar
Randy_S
Thread Starter
TECH Regular
iTrader: (1)
 
Joined: Jun 2005
Posts: 423
Likes: 0
From: Alvin Tx
Default
Yup, it wasnt my heads afterall.
Reply
0
Old Jun 22, 2007 | 02:46 PM
Share
  #4  
NemeSS's Avatar
NemeSS
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (127)
 
Joined: Sep 2005
Posts: 6,889
Likes: 9
From: Houston,TX
Default
is that one of the slp shortblocks that had bad pistons?
looks like mechanical failure, not tuning failure, idk
Reply
0
Old Jun 22, 2007 | 02:49 PM
Share
  #5  
Randy_S's Avatar
Randy_S
Thread Starter
TECH Regular
iTrader: (1)
 
Joined: Jun 2005
Posts: 423
Likes: 0
From: Alvin Tx
Default
NO, it was built locally. I am being told initially that it was possibly caused by detonation issues.

I wont involve any names in the build as I still think it was something mechanically "bad part" and I just now need to know who and how its going to get fixed. I will be contacting the installation shop shortly after I know more about why the failure happened. It should have a warranty, we will see how that works out.
Reply
0
Old Jun 22, 2007 | 02:55 PM
Share
  #6  
chupr0kabra's Avatar
chupr0kabra
TECH Junkie
iTrader: (10)
 
Joined: Jan 2004
Posts: 3,778
Likes: 0
From: Pearland, TX
Default
Good luck!


-Mike
Reply
0
Old Jun 22, 2007 | 03:02 PM
Share
  #7  
A-Dub's Avatar
A-Dub
TECH Resident
iTrader: (6)
 
Joined: Nov 2004
Posts: 835
Likes: 1
From: Houston, TX
Default
Another #7 goes down.

If you think its mechanical, start with the build sheet and make sure the rings used were designed for the pistons used and that the rings gaps are correct
Reply
0

Trending Topics

Old Jun 22, 2007 | 03:09 PM
Share
  #8  
Randy_S's Avatar
Randy_S
Thread Starter
TECH Regular
iTrader: (1)
 
Joined: Jun 2005
Posts: 423
Likes: 0
From: Alvin Tx
Default
Originally Posted by SilverSierra
Another #7 goes down.

If you think its mechanical, start with the build sheet and make sure the rings used were designed for the pistons used and that the rings gaps are correct
It was my 2nd #7 piston to screw up! Thats why I built the 408 in the first place!
Reply
0
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-4

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-5

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
Old Jun 22, 2007 | 04:31 PM
Share
  #9  
The1N_only's Avatar
The1N_only
TECH Resident
20 Year Member
iTrader: (7)
 
Joined: Jan 2005
Posts: 764
Likes: 2
From: Belton, Texas
Default
well if this is your second motor you've lost because of the same reason... you might want to try to figure out whats causing that so you dont lose another
Reply
0
Old Jun 22, 2007 | 04:58 PM
Share
  #10  
connexion2005's Avatar
connexion2005
12 Second Club
iTrader: (49)
 
Joined: May 2006
Posts: 966
Likes: 0
From: College Station, Texas
Default
well i believe he is saying he lost #7 on his stock 346ci which is typical on an ls1 and now #7 on his 408ci which may be mechanical failure.
Reply
0
Old Jun 22, 2007 | 06:12 PM
Share
  #11  
Randy_S's Avatar
Randy_S
Thread Starter
TECH Regular
iTrader: (1)
 
Joined: Jun 2005
Posts: 423
Likes: 0
From: Alvin Tx
Default
Originally Posted by connexion2005
well i believe he is saying he lost #7 on his stock 346ci which is typical on an ls1 and now #7 on his 408ci which may be mechanical failure.

Thats exactly what I am saying.

Most of us know that the #7 is a weak spot in a stock LS1 but not necessarily in a stroker. I dont know how or why this happened, looking for some clues and thought maybe one or two people on here could help.
Reply
0
Old Jun 22, 2007 | 08:30 PM
Share
  #12  
connexion2005's Avatar
connexion2005
12 Second Club
iTrader: (49)
 
Joined: May 2006
Posts: 966
Likes: 0
From: College Station, Texas
Default
Yea I always wondered what was going on with number 7. I ran a compression test on mine about 2 months ago and than god number seven still pops out 170psi. I've always wondered if it had anything to do with the pcv outlet being on the valve cover above that cylinder but dont see how that could relate...good luck with your new build. I know my days are numbered for a project like this and it makes me sick for ya that this happened. Are you going to try and just swap the piston and rings on number seven only? Its something I would look into after getting it checked out for an ok...
Reply
0
Old Jun 23, 2007 | 11:08 AM
Share
  #13  
Randy_S's Avatar
Randy_S
Thread Starter
TECH Regular
iTrader: (1)
 
Joined: Jun 2005
Posts: 423
Likes: 0
From: Alvin Tx
Default
I believe that the piston can be replaced and the cylinder honed out. The heads have to be worked on as it now looks like the top of the piston. I think everything will be worked out.

Once again, just looking for some input to see if anyone would know why this happened.
Reply
0
Old Jun 23, 2007 | 11:17 AM
Share
  #14  
BigBronco's Avatar
BigBronco
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (2)
 
Joined: Sep 2003
Posts: 10,587
Likes: 1
From: Houston
Default
Either the rings Butted and caused the ring land to break, or you had a crappy tune with a good amount of Pre-ignition.
Reply
0
Old Jun 23, 2007 | 03:53 PM
Share
  #15  
chriswtx's Avatar
chriswtx
TECH Fanatic
20 Year Member
iTrader: (5)
 
Joined: Apr 2005
Posts: 1,014
Likes: 0
From: san marcos, TX
Default
who made the pistons?? and what were the piston ring gaps? If you don't know, you might want to pull that piston and measure the ring end gaps just so you know for sure...Hopefully the bore on the block is not cracked like mine did...
Reply
0
Old Jun 24, 2007 | 10:38 AM
Share
  #16  
GS WS6's Avatar
GS WS6
TECH Apprentice
 
Joined: Jan 2002
Posts: 306
Likes: 0
From: Dallas, TX
Default
Have you checked to see that the number 7 injector is working properly??????
Reply
0
Old Jun 24, 2007 | 11:48 AM
Share
  #17  
red90cobra's Avatar
red90cobra
TECH Addict
iTrader: (36)
 
Joined: Apr 2002
Posts: 2,526
Likes: 0
From: Murphy, Tx
Default
Originally Posted by GS WS6
Have you checked to see that the number 7 injector is working properly??????

i was thinking this also.
Reply
0
Old Jun 24, 2007 | 03:44 PM
Share
  #18  
Randy_S's Avatar
Randy_S
Thread Starter
TECH Regular
iTrader: (1)
 
Joined: Jun 2005
Posts: 423
Likes: 0
From: Alvin Tx
Default
The injectors are brand new. The only old thing that the motor used was the heads and we checked those. They are fine.
Reply
0
Old Jun 24, 2007 | 03:58 PM
Share
  #19  
ramairws6's Avatar
ramairws6
9 Second Club
20 Year Member
Photogenic
Photoriffic
iTrader: (33)
 
Joined: Sep 2004
Posts: 2,013
Likes: 85
From: Hicksville MN!
Default Injector
Sorry to say.... but just because these injectors were new doesn't mean a thing.Too many times I've seen faulty or bad new parts and you waste your time looking at every other thing just because"they were new".Make sure you check this injector out like the others have stated.Traver
Reply
0
Old Jun 25, 2007 | 12:31 AM
Share
  #20  
Inspector12's Avatar
Inspector12
TT-TECH Veteran
20 Year Member
iTrader: (29)
 
Joined: Mar 2003
Posts: 4,779
Likes: 4
From: Pearland
Default
Originally Posted by BigBronco
Either the rings Butted and caused the ring land to break, or you had a crappy tune with a good amount of Pre-ignition.
Detination (sp?) was my guess although could be the other though.
Reply
0



Advanced Search

All times are GMT -5. The time now is 01:01 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE