Owners manual

IT IS CRITICAL THAT ALL BOLTS BE RE-TIGHTENED HOT AFTER ABOUT 20
MINUTES OF OPERATION TO PREVENT GASKET FAILURE.
NOTE: HEADERS ARE NOT MEANT TO SERVE AS “EXHAUST SYSTEM SUPPORT
HANGERS”. ADDITIONAL HANGERS MAY NEED TO BE ADDED AT THE TIME
OF THE INSTALLATION OF THE HEADERS SO THAT THE EXHAUST SYSTEM
SUPPORTS ITSELF WHEN THE COLLECTOR BOKTS ARE REMOVED. HEADERS
THAT HAVE “SAGGED” DUE TO THE LACK OF SUFFICIENT EXHAUST SYSTEM
SUPPORT WILL NOT BE REPLACED UNDER WARRANTY.
NOTE: HEADER BOLTS SHOULD BE INSPECTED FOR TIGHTNESS FROM TIME
TO TIME TO ENSURE OPTIMUM GASKET LIFE. THE BOLTS WILL STRETCH
SOME AT FIRST DUE TO THE EXHAUST HEAT; SO, THEY’LL LOOSEN
WITHOUT TURNING UNTIL THEY “TAKE A SET”. (BOLTS HARD ENOUGH NOT
TO STRETCH WOULD BREAK!) WE’VE EXPERIMENTED WITH THE VARIOUS
“LOCKING DEVICES” ON THE MARKET, WHICH PREVENT BOLTS FROM
TURNING. THEY DON’T WORK ON HEADER BOLTS, AND THEY GREATLY
COMPLICATE THE PROCESS OF RE-TIGHTENING THE BOLTS WHEN IT’S
NECESSARY.
WHAT DOES WORK IS THIS:
GO OVER THE BOLTS AGAIN AFTER THE FIRST DAY OF DRIVING (OR ABOUT
100 MILES-WHICHEVER COMES FIRST) THEN AFTER THE FIRST WEEK, AFTER
THE FIRST MONTH, AND THEN EVERY 6 MONTHS. OUR EXCLUSIVE GASKETS
ARE SPECIALLY MADE SO THAT THE CYLINDER HEAD SHOULD BEGIN TO
MELT BEFORE THE GASKETS CAN BURN UP. ABOUT THE ONLY WAY TO KILL
THE GASKETS IS TO LET THE HEADERS GET LOOSE AND THEN KEEP
DRIVING WITH A LEAK.
DUE TO VARYING CONDITIONS BETWEEN GEOGRAPHICAL LOCATIONS AND
USAGE, WE STRONGLY RECOMMEND HAVING THE ENGINE RE-TUNE AT A
REPUTABLE TUNE-UP SHOP AFTER THE INSTALLATION OF THE HEADERS.
DOING SO WILL ENSURE THAT YOU GET THE MAXIMUM BENEFIT FROM THE
INSTALLATION OF THE HEADERS.
GIBSON PERFORMANCE STRIVES TO DELIVER THE HIGHEST QUALITY
MATERIALS, WORKMANSHIP, AND SERVICE. PLEASE SO NOT HESITATE TO
CALL OUR TECHNICAL LINE IF YOU HAVE A QUESTION OR EXPERIENCE A
PROBLEM.
WE TRULY WISH TO HAVE ONLY SATISFIED CUSTOMERS