anybody run crane cam
11 Second Club
Joined: Nov 2001
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From: NE PA
And my Cam Motion cam.
223/227 .566/.567 112
272/277 advertised duration @ .006"
lobe intensity = 49.5
If you use the lobe intensity formula on split duration cams, you add the totals and divide by two to get the solution.
Total advertised duration (223 + 227 = 549) - total duration @ .050" (223 + 227 = 450) / 2 = lobe intensity (49.5)
223/227 .566/.567 112
272/277 advertised duration @ .006"
lobe intensity = 49.5
If you use the lobe intensity formula on split duration cams, you add the totals and divide by two to get the solution.
Total advertised duration (223 + 227 = 549) - total duration @ .050" (223 + 227 = 450) / 2 = lobe intensity (49.5)
11 Second Club
Joined: Feb 2003
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From: The South
Originally Posted by XTrooper
1. The word "soft" was never used by the Crane tech. That's your word.
2. "Easy" and "soft" in this context mean the SAME thing. What we were told is that they said they were "easy".
Got anything else to conjur up?
Thanks 02Reaper
updated list:
stock cam (.004)=86.5/78.9 (calculated from JRP's intake/exhaust specs)
Crane cam (.006)=62
Comp XE (.004)=53
Cammotion (.006)=50
Comp XER (.004)=49
Note that I am just listing them by intensity number & not taking into consideration the difference between the lift measurement points. Also, I'm having a bad case of Monday morning blahs that's carrying over into the afternoon. Can someone double check my numbers, thanks.
updated list:
stock cam (.004)=86.5/78.9 (calculated from JRP's intake/exhaust specs)
Crane cam (.006)=62
Comp XE (.004)=53
Cammotion (.006)=50
Comp XER (.004)=49
Note that I am just listing them by intensity number & not taking into consideration the difference between the lift measurement points. Also, I'm having a bad case of Monday morning blahs that's carrying over into the afternoon. Can someone double check my numbers, thanks.
TECH Senior Member
Joined: Mar 2004
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From: BFE
Actualy this cam has different intake /exhaust intensity, minor but different
(.006 lifts-.050lifts)= rate intensity variance >
Intake> 272-223= 49 which is eaqual to an XE-R rate or similar
Exhaust> 277-227=50 which is a tad slower but faster than XE which is 53.
Nozee all the cams should be at .006 to compare rate intensity variance.
(.006 lifts-.050lifts)= rate intensity variance >
Intake> 272-223= 49 which is eaqual to an XE-R rate or similar
Exhaust> 277-227=50 which is a tad slower but faster than XE which is 53.
Nozee all the cams should be at .006 to compare rate intensity variance.
11 Second Club
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From: NE PA
Originally Posted by PREDATOR-Z
Actualy this cam has different intake /exhaust intensity, minor but different
(.006 lifts-.050lifts)= rate intensity variance >
Intake> 272-223= 49 which is eaqual to an XE-R rate or similar
Exhaust> 277-227=50 which is a tad slower but faster than XE which is 53.
(.006 lifts-.050lifts)= rate intensity variance >
Intake> 272-223= 49 which is eaqual to an XE-R rate or similar
Exhaust> 277-227=50 which is a tad slower but faster than XE which is 53.
Originally Posted by PREDATOR-Z
Nozee all the cams should be at .006 to compare rate intensity variance.
updated:
stock cam (.004)=86.5/78.9
Crane cam (.006)=62
Comp XE (.004)=53
Cammotion (.006)=50; 49/50
Comp XER (.004)=49
11 Second Club
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From: NE PA
nuzee: I think the reference points (.004" and .006") got reversed in a couple of places on the list. Unless I'm mistaken (I could be), Crane's advertised duration numbers are based on the .004" mark and Comp Cams uses .006" to calculate theirs.
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From: NE PA
P.S.- This is why the Cranes appear less intense in comparison. Advertised duration numbers based on the lower lift point of .004" will create larger advertised duration numbers than at .006". These larger advertised duration numbers, when used in Harvey Crane's intensity formula, create a higher number/less perceived intensity.
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Verdad Gallardo TECH Senior Member
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From: BFE
Originally Posted by XTrooper
Correct, but I figured the average of 49.5 would be "close enough."
but looking closer now you can see that the Cammotion has different rates int/exhaust and that alone can explain a littler about their exemplary behaviour 
11 Second Club
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From: NE PA
Originally Posted by PREDATOR-Z
Nice one but looking closer now you can see that the Cammotion has different rates int/exhaust and that alone can explain a littler about their exemplary behaviour
but looking closer now you can see that the Cammotion has different rates int/exhaust and that alone can explain a littler about their exemplary behaviour 
Thread Starter
Launching!
Joined: Nov 2004
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So If in fact the crane cam does have an agressive cam similar to other cam companies (not sure if that is the case, since some of this jargon goes over my head) why does it require spring changes much later-50k compared to 15-20k like thunder racing told me about their cam TR224
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From: The South
Originally Posted by d james
So If in fact the crane cam does have an agressive cam similar to other cam companies (not sure if that is the case, since some of this jargon goes over my head) why does it require spring changes much later-50k compared to 15-20k like thunder racing told me about their cam TR224
