S13 & S14 SR20 Cam Lobe Size Differences

[JDS Performance]

S13 & S14 SR20 Cam Lobe Size Differences

I am trying to mic out a set of stock S13 Redtop SR20DET Cams but as we all know there is no English S13 SR FSM - SO I am wondering (if anyone actually knows)
Is there a difference in the cam lobe sizes from S13 to S14?

The S14 SR20DET Cam Specs are;
Intake & Exhaust: 37.920-38.110mm (1.4929-1.5004in)
Wear Limit: 0.20 mm (0.0079 in)

I would look at the S13 N/A SR FSMs but I would assume the cams would be different but who knows - that is why I am asking because I have no idea and cant seem to find the answer in my searchs.

Any help would be awsome!

[McCoy]

When I did some measurements last year on mine, the S13 DET cams matched up with the Avenir B13 DET cams and the S13 DE cams matched up with the B13 DE cams... so yes, the early 91-93 B13 SR20DE cams would be a nice little upgrade for a redtop DET.

I don't have the numbers in front of me, but a search on the SR20forum.com might get you some numbers. I'll post them if I have time to look today.

Edit... here.

S13 Redtop/Blacktop
DE: 248/246 10.0/9.2
DET: 240/240 9.2/9.2

[JDS Performance]

Here is the answer courtesy of NICOClub.com:

According to my 180sx FSM, the specs are:

Intake: 38.103 - 38.293
Exhaust: 37.920 - 38.110

It doesn't mention a wear limit, so I'm assuming the JDM FSM would just have the cam replaced if it's outside of the given measurements.