Camshaft installation
tbifuzzy
03-30-2006, 12:39 AM
I have a comp magnum 280h cam part #12-212-2.
Gross valve lift 0.48
Duration at 0.006 tappet lift 280
Valve timing at 0.006
Intake open 34 close 66
Exhaust open 74 close 26
I had this cam in my car last year it did fine, i spun a bearing and had to take the motor apart and now i'm back to putting the cam back in and i don't remember how the gear goes back in. Is it at 0, +4, or -4 ???..... And if it's + or - will the # 1 piston be at TDC? I put it on zero and lined it up dot to dot and it was bending pushrods.
PLEASE HELP!
Gross valve lift 0.48
Duration at 0.006 tappet lift 280
Valve timing at 0.006
Intake open 34 close 66
Exhaust open 74 close 26
I had this cam in my car last year it did fine, i spun a bearing and had to take the motor apart and now i'm back to putting the cam back in and i don't remember how the gear goes back in. Is it at 0, +4, or -4 ???..... And if it's + or - will the # 1 piston be at TDC? I put it on zero and lined it up dot to dot and it was bending pushrods.
PLEASE HELP!
DCarr511
03-30-2006, 08:44 AM
I had this cam in my car last year it did fine, i spun a bearing and had to take the motor apart and now i'm back to putting the cam back in and i don't remember how the gear goes back in. Is it at 0, +4, or -4 ???..... And if it's + or - will the # 1 piston be at TDC? I put it on zero and lined it up dot to dot and it was bending pushrods.
PLEASE HELP!
If you had the crank dot at 12:00 and the cam dot at either 6:00 or 12:00 using the " 0 " and it was bending pushrods then there was something else wrong. That cam most likely has 4* advance ground into it so the " 0 " should be correct. The Piston will be at TDC no matter what gear posistion you choose.
Do you have a degree wheel and know how to degree a cam in ?
What is the lobe seperation and the recomended ICL ?
PLEASE HELP!
If you had the crank dot at 12:00 and the cam dot at either 6:00 or 12:00 using the " 0 " and it was bending pushrods then there was something else wrong. That cam most likely has 4* advance ground into it so the " 0 " should be correct. The Piston will be at TDC no matter what gear posistion you choose.
Do you have a degree wheel and know how to degree a cam in ?
What is the lobe seperation and the recomended ICL ?
Blue Bowtie
04-02-2006, 12:16 PM
You can either trust that Comp manufactured the cam correctly (99.999% of the time, they do) or do this:
http://72.19.213.157/files/Degreewheel.jpg
http://72.19.213.157/files/Degreewheel.jpg
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