Degree'ing cam....ICL problems
08-19-2012, 05:59 PM
#21
Like I said.... Use the .050 valve events on your cam card...
If they aren't listed for some stupid reason, then you need to call the cam grinder and get .050 valve events for your cam...
There's more to ICL than where the top of the lobe is.
Your .050 events are what really matters.
True ICL of lobe can be off because cam lobes are not typically symmetrical....
Faster off the seat, slow down for the top, drop it fast, and set it down soft....
It's about getting air and fuel into the cylinder as fast as possible, and the holding it open for a bit, and then closing it down before the piston starts to push it back out the intake
If they aren't listed for some stupid reason, then you need to call the cam grinder and get .050 valve events for your cam...
There's more to ICL than where the top of the lobe is.
Your .050 events are what really matters.
True ICL of lobe can be off because cam lobes are not typically symmetrical....
Faster off the seat, slow down for the top, drop it fast, and set it down soft....
It's about getting air and fuel into the cylinder as fast as possible, and the holding it open for a bit, and then closing it down before the piston starts to push it back out the intake
08-19-2012, 08:10 PM
#22
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Like I said.... Use the .050 valve events on your cam card...
If they aren't listed for some stupid reason, then you need to call the cam grinder and get .050 valve events for your cam...
There's more to ICL than where the top of the lobe is.
Your .050 events are what really matters.
True ICL of lobe can be off because cam lobes are not typically symmetrical....
Faster off the seat, slow down for the top, drop it fast, and set it down soft....
It's about getting air and fuel into the cylinder as fast as possible, and the holding it open for a bit, and then closing it down before the piston starts to push it back out the intake
If they aren't listed for some stupid reason, then you need to call the cam grinder and get .050 valve events for your cam...
There's more to ICL than where the top of the lobe is.
Your .050 events are what really matters.
True ICL of lobe can be off because cam lobes are not typically symmetrical....
Faster off the seat, slow down for the top, drop it fast, and set it down soft....
It's about getting air and fuel into the cylinder as fast as possible, and the holding it open for a bit, and then closing it down before the piston starts to push it back out the intake
Found intake duration at .050 after valve opening which was .5
Found intake duration at .050 prior to valve close which was 224.4
I then subtracted and divided by two to get 111.9
In the book it says this is more reliable than the method I used earlier. What are your thoughts on this method? Is this waht you and Tick meant by "use your .050 cam card specs"?
08-20-2012, 08:10 PM
#24
ok... so using your cam card that you sent me in a PM...
The Cam is Actually a 224/230 114LSA...I thought you were saying it was a 224/224 cam
if you want a 112 ICL...
IVO = 0 ATDC
IVC = 44 ABDC
EVO = 51 BBDC
EVC = 1 BTDC
you degree your cam using these specs...
Find TDC, and set cam wheel to 0 at TDC
Find the base Circle... Zero out your dial gauge
Turn over engine until you get the dial to read 0.050
check specs...advance or retard till it matches the Degrees above
The Cam is Actually a 224/230 114LSA...I thought you were saying it was a 224/224 cam
if you want a 112 ICL...
IVO = 0 ATDC
IVC = 44 ABDC
EVO = 51 BBDC
EVC = 1 BTDC
you degree your cam using these specs...
Find TDC, and set cam wheel to 0 at TDC
Find the base Circle... Zero out your dial gauge
Turn over engine until you get the dial to read 0.050
check specs...advance or retard till it matches the Degrees above
08-20-2012, 08:30 PM
#25
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OK I see it now, I came really close to those numbers using a different method.....well its the same method I just figured my IVC ABDC at 224.1, subtracted my IVO ATDC at 0.5 subtracted the two and divided by two which gave me 111.8 close enough! Thanks for dumbing that down for me.
Last edited by schmendog; 09-01-2013 at 07:27 AM.
