v.3 cam card need anyone?
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09-23-2007, 01:04 PM
#7
Why would someone else's cam card help? Every cam has variances - some companies more than others. So even though the lobe is SUPPOSED to be one thing doesn't mean it actually specs out to that. It would be much better to get a dial indicator and a degree wheel and measure your own cam to see what it ACTUALLY specs out to.
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09-24-2007, 02:30 PM
#8
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^um dude unless it was made with a dremel tool by hand or it was held by jb weld while it was machined then its almost nil difference between the production run of a group of cams.
09-24-2007, 03:35 PM
#9
Are you joking? You've never measured cams before have you? Heck, looking at 2 different local Trex cars, there was over 2* difference on the intake lobes. No offense, but you should make sure you know what you're talking about before you speak. Why do you think people get cams "cam doctored"? Not everyone does it just because they don't know what they ordered. Some do it because the variances from one cam to another with identical lobe catalog numbers can be pretty different.
09-25-2007, 12:12 AM
#10
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N4cer is correct, you'll be hard pressed to find 2 identical cam grinds. That is why I like Thunder, because you get a full detailed report at various lifts with every cam.
09-25-2007, 07:47 AM
#11
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where the hell did these people learn to program CNC machines at?
What I'm saying is I'm pretty sure that Comp (who grinds most if not all major vendor cams) has a QA dept. They might check every 5th one or they might check them all I dunno it all depends on their output per day.
But I guarantee that pretty much every cam they checked before shipping it out is within their tolerances of what the cam is supposed to be.
I think yall are looking to hard into little numbers that would make a too miniscule of a difference in power to even bother.
Also on another note. Any type of measuring tool HAS to be calibrated before it is allowed to give out a report that can be trusted. Hell I work in QA with $100K laser measuring devices and even when we calibrate them they are off by a certain acceptable amount.
Now how accurate do you think that little cam doctor is?
What I'm saying is I'm pretty sure that Comp (who grinds most if not all major vendor cams) has a QA dept. They might check every 5th one or they might check them all I dunno it all depends on their output per day.
But I guarantee that pretty much every cam they checked before shipping it out is within their tolerances of what the cam is supposed to be.
I think yall are looking to hard into little numbers that would make a too miniscule of a difference in power to even bother.
Also on another note. Any type of measuring tool HAS to be calibrated before it is allowed to give out a report that can be trusted. Hell I work in QA with $100K laser measuring devices and even when we calibrate them they are off by a certain acceptable amount.
Now how accurate do you think that little cam doctor is?
09-25-2007, 07:51 AM
#12
I think because the lobe is ground on (probably) ancient technology machines and the fact that no one is protesting COMP to update their processes to make anything better, it will continue this way for a while.
Agree with N4cer and PredZ because a cam doctor is in fact more accurate than the machines the cams are turned down on.
Agree with N4cer and PredZ because a cam doctor is in fact more accurate than the machines the cams are turned down on.
09-25-2007, 08:07 AM
#13
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a cam doctor is in fact more accurate than the machines the cams are turned down on.
Meaning no human hands actually use tools. All they gotta do is upload a file to a CNC. Or program in numbers.
09-25-2007, 09:14 AM
#14
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Originally Posted by cpt_bimes
I don't know how you'd get more accurate than Computer Numerical Control?
Meaning no human hands actually use tools. All they gotta do is upload a file to a CNC. Or program in numbers.
Meaning no human hands actually use tools. All they gotta do is upload a file to a CNC. Or program in numbers.
Cams will not come out exactly alike. Comp Cam acceptable margin is 2* variation. If you consider that a small margin, perhaps you better do some more reasearch. 2* can mean fatal death of a motor in big cams and/or a big loss in Hp output.
09-25-2007, 11:19 AM
#15
One guy on here had a Trex that was like a 244/250 while a local had one that was like 241.x -247.x. Variations are there. No way to argue it. The cool thing is that just like it was said, Thunder tells the customer the TRUTH and they knew what they got.