GMPP Timing Chain Damper...
The LS engine has a area between 3800-4200 that has some strange harmonics. When you drive thru this zone the chain will start a bad whipping motion that will eventually lock up the links and cause failure. The fix in the original design was a stamped steel piece with a nylon guide that snapped on. That piece did not make production although they kept drilling and tapping the holes for about three years. We had a Motorola cup car somewhere around 1999-2000 that lost a transmission gear (3rd) during the race. This caused the driver to jump from 2nd to 4th forcing the engine thru the "bad" zone. The timing chain failed about one hour after the trans. The "fix" was to make a rub block like the original design. It stops the chain "whip" by giving the chain something to lean on.
Kurt
Kurt
where have you seen this for 10 bucks? thunder has em, but they are $130
http://www.thunderracing.com/catalog...vid=3&pcid=222
http://www.thunderracing.com/catalog...vid=3&pcid=222
Trending Topics
TECH Enthusiast
Joined: Apr 2003
Posts: 561
Likes: 0
From: silver Spring MD
Originally Posted by 427
The LS engine has a area between 3800-4200 that has some strange harmonics. When you drive thru this zone the chain will start a bad whipping motion that will eventually lock up the links and cause failure. The fix in the original design was a stamped steel piece with a nylon guide that snapped on. That piece did not make production although they kept drilling and tapping the holes for about three years. We had a Motorola cup car somewhere around 1999-2000 that lost a transmission gear (3rd) during the race. This caused the driver to jump from 2nd to 4th forcing the engine thru the "bad" zone. The timing chain failed about one hour after the trans. The "fix" was to make a rub block like the original design. It stops the chain "whip" by giving the chain something to lean on.
Kurt
Kurt
My engine has a double chain on it - for what ever reason, the engine is very rough around 1800 to 2000 RPM. Go past that point or below that point and the engine is fine. It does not matter if it is under load or not. Could I be having a problem similar to what you are describing? I appreciate any information on it.
Thanks
Bill
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Originally Posted by Bill's 02 Z-28 SS
Hi Kurt
My engine has a double chain on it - for what ever reason, the engine is very rough around 1800 to 2000 RPM. Go past that point or below that point and the engine is fine. It does not matter if it is under load or not. Could I be having a problem similar to what you are describing? I appreciate any information on it.
Thanks
Bill
My engine has a double chain on it - for what ever reason, the engine is very rough around 1800 to 2000 RPM. Go past that point or below that point and the engine is fine. It does not matter if it is under load or not. Could I be having a problem similar to what you are describing? I appreciate any information on it.
Thanks
Bill
Launching!
Joined: Jan 2002
Posts: 224
Likes: 0
From: Monticello, MN
Originally Posted by Unaffiliated Racing
Does anyone have apic of one installed on a block, I was thinking of doing this but using a tensioner set that Comp makes..it's designed for a SBC but i'm sure I can make it work.
Ed
