THIS IS A NEW BARE HEAD WITH THE VALVES, GUIDES, SEALS, SPRINGS, SPRING KEEPERS AND VALVE COTTORS ALL NEW AND INSTALLED!! EVERYTHING ELSE WILL FIT FROM YOUR OLD HEAD,INCLUDING YOUR OLD CAM.
THE VALVES IN THIS HEAD ARE MADE IN JAPAN !!! GREAT QUALITY
THIS IS CLASSIFIED AS AN "OLD 70 HEAD" AND DOME.
IT WILL REPLACE THE STOCK HEADS FROM
80 - 81 C70 PASSPORTS
ALL CL/SL/XL70'S
69 - 81 CT70'S
ALL ATC70'S
ALL TRX70'S
THE STOCK PISTONS FROM THE ABOVE MODELS WILL WORK WITH THIS HEAD..
IF YOU USE THE 85CC/51MM CYLINDER AND STOCK OR STROKER CRANK THEN YOU NEED OUR # (100041) PISTON..
OR IF YOU USE THE 88CC/52MM CYLINDER AND STOCK OR STROKER CRANK THEN YOU NEED OUR # (100042) PISTON..
BUT IF YOU WANT THE BIG 95CC/54MM CYLINDER AND STOCK OR STROKER CRANK THEN USE OUR # (54/GBO) PISTON!!!!!!
LISTED BELOW ARE SOME DIFFERENT CAM OPTIONS, AND ANY REPLACEMENT COVERS OR PARTS YOU MAY NEED FOR THIS HEAD
*
!! NOTE !! (THIS CAM MUST BE USED WITH STOCK HONDA VALVES) OR AT LEAST CHECK TO MAKE SURE THE AFTERMARKET VALVES CLEAR EACH OTHER WHEN THEY PASS EACH OTHER... (YOU CAN GRIND OFF SOME OF THE VALVE'S OUTTER OD SO THEY DO CLEAR IF NEEDED)
WE RECCAMEND OUR 200159 VALVE SPRING, SO YOU DON'T GET COIL TO COIL BINDING
THIS IS AS BIG OF CAM AS WILL FIT IN THE OLD TYPE HEADS
IT HAS SOME LIFT OVER THE STOCK CAM, BUT TONS OF DURATION
*
THIS IS THE MOST RADICAL CAM MADE FOR THE OLD TYPE HONDA HEADS
*
THIS CAM HAS 6MM OF LIFT.
*
Camshaft Calculations - Lobe Center / Duration AT .050" VALVE LASH
THE VALVE LASH IS MORE FOR CARS AND REALLY DON'T GIVE A
TRUE CYCLE READING,, BUT THATS JUST HOW IT'S DONE.
THE LASH IS ONLY .0025" ON THE BIKES COMPAIRED TO .050" ???
*
THIS CAM has an Overlap of 40.00 degrees and has an
Intake Duration of 255.00 degrees. The Exhaust Duration is
265.00 degrees. The Inlet Cam has an Installed Centerline
of 102.50 degrees ATDC. The exhaust cam has an Installed
Centerline of 117.50 degrees BTDC.
*
LIFT IS 6MM
THE BEARING IS A PRESS FIT (TAP IN WITH COMMON SOCKET)
IT ACCUALLY WORKS BETTER THAN MY $140.00 OEM HONDA COMPRESSOR, BECAUSE THERE IS NOTHING IN THE WAY WHEN
TRING TO REMOVE AND REPLACE THE COTTORS YAHOO !!!
SEE ALL THE PICTURES BELOW FOR INSTRUCTIONS.
ONE TINY ITEM WITH THIS COMPRESSOR, YOU MUST GRIND SOME OFF THE ONE ARM. SEE BELOW,, MAKE THE SMALLER ARM LOOK LIKE THE ONE ON THE COMPRESSOR IN THE PICTURE. IT TOOK ME ABOUT 45 SECONDS WITH MY 4 1/2" ANGLE GRINGER TO DO THIS.
CLICK ON ANY OF THE PICTURES BELOW TO GET A LARGER VIEW.