some converstion that belongs over here... it's a good disscusion IMO.
relating to frankenstangs posts about the camshaft degree
here
'If you found intake center line to be 106 and lobe seperation angle for your cam is 110, then would'nt that seem to indicate there is already 4* advance ground into the cam?
No, it does not indicated there is a 4* already advanced into the cam. it shows the crankshaft key to be inaccurate, I think to get the cam shaft to be 0* advanced it would be sitting on -8 on the key.
If so, would retarding the crank gear to a position of -4 negate the advance already ground into the cam?' Just a question for the forum.
turning the crank key clockwise advances, counter clockwise retards, now the -4 postion on the crank gear does not mean the camshaft is set 4* retarded, in fact, it has no relation to the exact postion of the camshaft in any kind of calculation. (think of the positions as letters, not numbers)
...and asking this question as much of/for the others reading along...not trying to confuse you, or put you on the spot
MPGmustang wrote:straight up 0* on the cam. for me mine measured 102.25* LC
I see now your intake centerline came out as above not 106 or 110 as expected (can't remember if CS cams are have advance ground in). So your -4 retarding is compensating for that...I think I'm following now...I shouldn't try working while reading along about cams at the same time. Again...no offense intended...My bad
I have miss stated my intent/findings, it should have read
"when degree'd to postion 0 on the crank key, the cam intake LC was set at 102.25* from TDC, indicating 7.75* advance"
my lobe centers are in fact 110* apart, I have confirmed the intake duration at .050 lift I have my cam that I purchased (i did not confirm the exhaust as I didn't think of it at the time)
so at 0* i have tdc, if I installed the cam to be straight up the peak lift of the intake lobe would be @ 110*, but I want the peak lift to occur 4* advanced (or sooner) so I set to 106* by try'n different crank key positions.
No offence taken, nor do I mean offence, I learned all this this week, I'm also try'n to explain that the cam is correct with no imperfections, the dual roller timing chain set is wrong that has the problem of being misleading/inaccurate.
Richard