LT1 Piston Failure - Page 4 - CorvetteForum - Chevrolet Corvette Forum Discussion

Notices
C7 Forced Induction/Nitrous C7 Corvette Turbochargers, Superchargers, Pulley Upgrades, Intercoolers, Wet and Dry Nitrous Injection, Meth
Sponsored by:
Sponsored by:

LT1 Piston Failure

Reply

 
 
 
Old 03-08-2018, 08:36 AM
  #61  
stab1991
CF Senior Member
 
Member Since: Jan 2015
Posts: 417
Thanked 58 Times in 49 Posts
Default

Originally Posted by FYREANT View Post
What would you like to hear? I have the drop in VR pistons and currently am sitting around 900 wheel..
hi Ant, do you have the stock rods still? Pistons are my next step since Iím already pushing it a little past the comfort zone on the stockers. I need to find a shop near me in Jersey to do the install.
stab1991 is offline  
Reply With Quote
Old 03-08-2018, 08:58 AM
  #62  
FYREANT
I'm Batman..
Support Corvetteforum!
 
FYREANT's Avatar
 
Member Since: Apr 2014
Location: Lehigh Acres FL
Posts: 5,234
Thanked 621 Times in 410 Posts
Tech Contributor
Default

Originally Posted by stab1991 View Post

hi Ant, do you have the stock rods still? Pistons are my next step since Iím already pushing it a little past the comfort zone on the stockers. I need to find a shop near me in Jersey to do the install.
Yes sir. Stock LT1 rods and crank.
FYREANT is offline  
Reply With Quote
Old 03-08-2018, 09:42 AM
  #63  
RelentlessSecurity
Junior Member
 
Member Since: Jan 2018
Posts: 29
Thanks: 0
Thanked 2 Times in 2 Posts
Default

Originally Posted by FYREANT View Post
Yes sir. Stock LT1 rods and crank.
Any idea what the labor for the install was on the pistons?
RelentlessSecurity is offline  
Reply With Quote
Old 03-08-2018, 09:52 AM
  #64  
Osman
CF Senior Member
 
Member Since: Apr 2009
Location: London Ontario
Posts: 146
Thanked 8 Times in 7 Posts
Default

VR Pistons with stock rods and stock crank in my LT1... If i was doing it all over again, i would chang rods too... Nothing wrong with just pistons, but if i ever decide to push it even harder it would be there...
Not sure if anyone makes drop in rods and pistons...
Osman is offline  
Reply With Quote
Old 03-08-2018, 10:56 AM
  #65  
bullitt4110
CF Senior Member
 
bullitt4110's Avatar
 
Member Since: Feb 2007
Location: Fairfield CA
Posts: 6,257
Thanked 26 Times in 23 Posts
Default

Originally Posted by Osman View Post
VR Pistons with stock rods and stock crank in my LT1... If i was doing it all over again, i would chang rods too... Nothing wrong with just pistons, but if i ever decide to push it even harder it would be there...
Not sure if anyone makes drop in rods and pistons...
I may be wrong but I thought i saw that Cunningham Motorsports is making a drop in piston and rod combo with a price tag around $2000-2500. Iím not sure where I remember seeing it though.
bullitt4110 is offline  
Reply With Quote
Old 03-08-2018, 11:10 AM
  #66  
FYREANT
I'm Batman..
Support Corvetteforum!
 
FYREANT's Avatar
 
Member Since: Apr 2014
Location: Lehigh Acres FL
Posts: 5,234
Thanked 621 Times in 410 Posts
Tech Contributor
Default

Originally Posted by RelentlessSecurity View Post
Any idea what the labor for the install was on the pistons?
Zero. I did it all myself.

Originally Posted by Osman View Post
VR Pistons with stock rods and stock crank in my LT1... If i was doing it all over again, i would chang rods too... Nothing wrong with just pistons, but if i ever decide to push it even harder it would be there...
Not sure if anyone makes drop in rods and pistons...
Cunningham makes a drop in kit with pistons and rods but the only option for compression is to drop from 11.5:1 to 10.5:1.

Ant

Last edited by FYREANT; 03-08-2018 at 11:11 AM.
FYREANT is offline  
Reply With Quote
Old 03-13-2018, 11:05 AM
  #67  
[email protected]
Supporting Vendor
Thread Starter
 
Billy@MTI's Avatar
 
Member Since: Sep 2016
Location: Houston Texas
Posts: 770
Thanked 112 Times in 84 Posts
Default

Its about $4000.




Originally Posted by RelentlessSecurity View Post
Any idea what the labor for the install was on the pistons?
Billy@MTI is offline  
Reply With Quote
The Following User Says Thank You to [email protected] For This Useful Post:
John Micheal Henry (03-13-2018)
Old 03-13-2018, 09:54 PM
  #68  
John Micheal Henry
CF Senior Member
 
John Micheal Henry's Avatar
 
Member Since: Jan 2005
Location: Marshall Texas
Posts: 1,469
Thanked 198 Times in 164 Posts
Default

Originally Posted by [email protected] View Post
Its about $4000.
Billy, Do you remove the engine to do the install??
John Micheal Henry is offline  
Reply With Quote
Old 03-14-2018, 09:33 AM
  #69  
Osman
CF Senior Member
 
Member Since: Apr 2009
Location: London Ontario
Posts: 146
Thanked 8 Times in 7 Posts
Default

Originally Posted by John Micheal Henry View Post
Billy, Do you remove the engine to do the install??
It would be super difficult to do it with engine in... i don't think anyone would try to do it with engine in...
Osman is offline  
Reply With Quote
Old 03-14-2018, 05:28 PM
  #70  
6spdg37s
CF Senior Member
 
Member Since: Oct 2008
Location: Staten Island/NJ NY/NJ
Posts: 1,653
Thanked 39 Times in 31 Posts
Default

can't imagine it being done with the motor in, thats why im waiting to do mine for a couple years then ill really turn the boost up
6spdg37s is offline  
Reply With Quote
Old 03-15-2018, 12:43 PM
  #71  
Riderover50
CF Senior Member
 
Member Since: Dec 2010
Location: London Canada
Posts: 166
Thanked 11 Times in 11 Posts
Default

Get ready to pull the front carraige and put your engine in an engine holder! Cant no way do a piston upgrade without taking engine out! Hey if you know a way pist it asap! After you get copyright it...lol
Riderover50 is offline  
Reply With Quote
Old 03-16-2018, 07:13 AM
  #72  
BlueDevilZ51
CF Senior Member
 
BlueDevilZ51's Avatar
 
Member Since: Oct 2009
Location: Long Island New York
Posts: 1,333
Thanked 238 Times in 166 Posts
Default

I have a stage 2 Edelbrock E Force, 9 pounds of boost. Made 520hp on a Mustang dyno(close to 600 on Dynojet). It was rich at wot put, afr in the 10s. on Edelbrocks tune. I was thinking of getting a custom tune for more power and to lean it out to mid 12s at wot. Now I'm thinking of just leaving the Edelbrock tune after reading this thread. Thinking Edelbrocks rich tune would keep the pistons cooler and help avoid this broken piston issue?
BlueDevilZ51 is offline  
Reply With Quote
Old 03-16-2018, 09:41 AM
  #73  
Osman
CF Senior Member
 
Member Since: Apr 2009
Location: London Ontario
Posts: 146
Thanked 8 Times in 7 Posts
Default

Originally Posted by BlueDevilZ51 View Post
I have a stage 2 Edelbrock E Force, 9 pounds of boost. Made 520hp on a Mustang dyno(close to 600 on Dynojet). It was rich at wot put, afr in the 10s. on Edelbrocks tune. I was thinking of getting a custom tune for more power and to lean it out to mid 12s at wot. Now I'm thinking of just leaving the Edelbrock tune after reading this thread. Thinking Edelbrocks rich tune would keep the pistons cooler and help avoid this broken piston issue?

AFR in 10s... eeekkkk... that is way way to rich for DI.. BUT

Keep the timing out of it and leave it rich and it should last...
Osman is offline  
Reply With Quote
Old 03-16-2018, 10:59 AM
  #74  
[email protected]
Supporting Vendor
Thread Starter
 
Billy@MTI's Avatar
 
Member Since: Sep 2016
Location: Houston Texas
Posts: 770
Thanked 112 Times in 84 Posts
Default

Yes we do. Pretty much the only way to do it right.


Originally Posted by John Micheal Henry View Post
Billy, Do you remove the engine to do the install??
Billy@MTI is offline  
Reply With Quote
Old 03-18-2018, 12:39 PM
  #75  
John Micheal Henry
CF Senior Member
 
John Micheal Henry's Avatar
 
Member Since: Jan 2005
Location: Marshall Texas
Posts: 1,469
Thanked 198 Times in 164 Posts
Default

Originally Posted by [email protected] View Post
Yes we do. Pretty much the only way to do it right.
Billy, Does that price include all parts and labor? Thanks again for your time/reply..
John Micheal Henry is offline  
Reply With Quote
Old 03-19-2018, 12:27 PM
  #76  
[email protected]
Supporting Vendor
Thread Starter
 
Billy@MTI's Avatar
 
Member Since: Sep 2016
Location: Houston Texas
Posts: 770
Thanked 112 Times in 84 Posts
Default

No thats the R/R labor, honing block and reassembly. You are very welcome.



Originally Posted by John Micheal Henry View Post
Billy, Does that price include all parts and labor? Thanks again for your time/reply..

Last edited by [email protected]; 03-19-2018 at 12:27 PM.
Billy@MTI is offline  
Reply With Quote
The Following User Says Thank You to [email protected] For This Useful Post:
John Micheal Henry (03-23-2018)
Old 03-22-2018, 11:14 PM
  #77  
blown5.0
CF Member
 
Member Since: Feb 2017
Posts: 74
Thanked 9 Times in 7 Posts
Default

On relatively low HP FI builds (550RWHP-625RWHP), when the pistons go, are they damaging any other part of the engine, or is it typically just the ringlands? Also, when the engine is rebuilt, is there any additional work which needs to be done besides the piston replacement, such as boring it over .005", boroscope inspection, full inspection, etc..
Just trying to get a better sense of what typically happens following this seemingly common failure mode.
blown5.0 is offline  
Reply With Quote
Old 03-23-2018, 06:53 AM
  #78  
BlueDevilZ51
CF Senior Member
 
BlueDevilZ51's Avatar
 
Member Since: Oct 2009
Location: Long Island New York
Posts: 1,333
Thanked 238 Times in 166 Posts
Default

I wouldn't say this is a "common failure" the vast majority of stock piston LT1s are doing just fine. They are just limited to a certain HP, once you push past it you're going to have issues.
BlueDevilZ51 is offline  
Reply With Quote
Old 03-23-2018, 09:09 AM
  #79  
Osman
CF Senior Member
 
Member Since: Apr 2009
Location: London Ontario
Posts: 146
Thanked 8 Times in 7 Posts
Default

This thread makes it sound like supercharger will implode your engine on first start.

Keep it under 10psi, run it little richer, keep timing under 12-14, and have alcohol injection and you will be fine for long long time...

I messed up my ring land by running race gas, 15psi, **** load of timing and i was just asking for...

Last edited by Osman; 03-23-2018 at 09:10 AM.
Osman is offline  
Reply With Quote
The Following 2 Users Say Thank You to Osman For This Useful Post:
6spdg37s (03-23-2018), John Micheal Henry (03-23-2018)
Old 03-23-2018, 02:36 PM
  #80  
[email protected]
Supporting Vendor
Thread Starter
 
Billy@MTI's Avatar
 
Member Since: Sep 2016
Location: Houston Texas
Posts: 770
Thanked 112 Times in 84 Posts
Default

When the lands break we haven't seen them do any other damage. You Just get a lot of blow by and loss of power. We deglaze the cylinders, no boring.



Originally Posted by blown5.0 View Post
On relatively low HP FI builds (550RWHP-625RWHP), when the pistons go, are they damaging any other part of the engine, or is it typically just the ringlands? Also, when the engine is rebuilt, is there any additional work which needs to be done besides the piston replacement, such as boring it over .005", boroscope inspection, full inspection, etc..
Just trying to get a better sense of what typically happens following this seemingly common failure mode.
Billy@MTI is offline  
Reply With Quote
 
 
 


Thread Tools
Search this Thread
Quick Reply: LT1 Piston Failure


Sponsored Ads
Vendor Directory

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: