Identifying camshafts
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| + | ==Overview== | ||
Basics of ID'ing camshafts. | Basics of ID'ing camshafts. | ||
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| + | ==Roller vs. flat tappet== | ||
| + | Telling one from the other is relatively easy. The roller cam will have much more rounded lobes, like the big end of an egg. A flat tappet cam will be much more pointed- similar to the small end of an egg. | ||
| + | Below is a hydraulic roller cam, the rounded lobes are readily appearant compared to the flat tappet cam to the right of it. | ||
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| + | [[File:Roller L ft R.jpg|thumb|400px|left|Chevy hydraulic roller from a LS7, gundrilled]] <br style="clear:both"/> | ||
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| + | Often roller cams will be made of steel and will be shiny instead of a flat black color of a flat tappet cam caused by the wear treatment it is given. | ||
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| + | ==Warnings== | ||
| + | Roller cams cannot use flat tappet lifters, and vice versa. Besides the mechanical interference between a flat tappet and a roller cam lobe, the timing events will be skewed much to badly for this to work. A roller lifter on a flat tappet lobe would have very little duration, a flat tappet on a roller lobe would have way too much duration, even if it could work without mechanical interference. | ||
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| + | [[File:Ft vs roller.jpg]] <br style="clear:both"/> | ||
[[Category:Identification and decoding]] | [[Category:Identification and decoding]] | ||
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