Thread: Cam identification

cams in that pic (mine) are 100% s4. Measured about 39.5mm lobe height.

I've looked at a lot of other pics of S4/S3 cams and some have tan paint on them, so I'd say paint, regardless of color, isn't a factor per se.

I got my caliper from harbor freight for $3. Gotta measure them. Only way to tell for sure if you have doubts (probably good to confirm for $3 anyways). You can even do it with the cams installed, just have to remove the valve cover(what I did).

-G

S4: 1.5685", 39.84mm. This is measuring the lobe. These are the measurements I had from Friday of last week. Goomba is right, just get a sliding caliper and measure.

Are you just measuring from top to bottom?

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JWT S3R (roller rockers) have 53J - 1 - LD stamps on them.

The "S" makes me think of "S4" but also "KF" makes me think of Kelford. I don't know why JWT just doesn't plainly stamp JWT S3/S4 on their cams in the first place.

Right? That would make sense huh?

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Yeah just somewhere, all they'd have to do is write "S3" or "S4" or "C2"

That'd make too much sense!

Of course man, you know how it goes with Nissan and anything related!