Important!! Intake cam=248; Exhaust cam=240

[ghx407]

See what I mean... According to the diagram and table in the attachment:

Outermost ring=a=exhaust cam=240 degs.

Innermost ring=b=intake cam=248 degs.

Therefore, a dual exhaust cam setup is actually 240/240, not 248/248 as most KA owners believe.

This is page 47, EM Sec. of the 1993 240SX Nissan Factory Service Manual.

[WDRacing]

I was looking at that all last night, I was skeptical at first, but I think you're right. Which means people have been disguarding the wrong cam all this time...lol.

[ghx407]

Yeah... It would be nice to let other KA owners in on the right information, but the 248 exhaust cam mistake is so widespread that it won't be easy.

[KATwo40]

Wow! That is quite obvious that the exhaust is 240 and intake 248.

[ghx407]

I was looking at the diagram and I think there's a typo:

a=exhaust cam should be 248 because e(8)+f(60)+180=248 exhaust cam

b=intake cam should be 240 because c(-1)+d(61)+180=240 intake cam

There appears to be a typo in the a and b values in the table so the 248/248 dual exhaust cam swap myth IS true.