91 Cams --> my 97 240 KA Questions

[SHiFT]

OK I've been researching putting 91 Cams into my 97' KA. Do people just choose the 91 cams because they are the most aggressive? What about the 92-94 cams? And with that is it the intake and exhaust cams or both exhaust cams? I've read some conflicting stuff on this which leads to my confusion. Hope someone can clear this up. Thanks.

[Structure240sx]

from what i know 91-92 and maybe 93 and 94 are the same. u can use 2 exhuast cams but im pretty sure that the exhuast cams need to be modified some how to be an intake cam. i didnt realize it was u that emailed me. i love your car.

[TachyonS14]

White S14's rock!! Ok, now that I got that out of my system today, I would also like to know are the 91 KA cams safe in our motors?

[p00t]

91-94 s13 cams are 240 degrees intake, 248 degrees exhaust duration.

I have no clue why people say to get just the 91 cams.... even some sites say that 91 is the best cam cause its 240/248.... which is exactly what 92, 93, and 94's are... :help

methinks a bit of misinformation going around. I do not know what the duration is for the s14/s15 cams, anyone know the actual numbers?

[Structure240sx]

s14 is 232/232 im pretty sure.s15's are only in japan as silvia's with sr20's

[Structure240sx]

tachyons14- that vid is awsome im still laughing

[SHiFT]

so the best then would be to just replace the 95+ cams with 91-94 intake & exhaust cams? Question..If the 91-94 cams are more aggressive than the newer ones, why is the HP the same in all KA24DE's?

[Structure240sx]

s14's have a more aggresive ecu mapping

[MikeMurphy]

91 cams

Intake - 207 degrees duration, .350 lift, Exhaust 215 duration, .367 lift

...so says Colt Cams who have aftermarket KA-E and DE cams available.

[:: orion ::]

Colt measures their cam differently...like PDM does.

OEM is measured at .500" lift, and that's where the 240/248 #s come from.

And to set some of the myths/misinformation straight:

'91-92 have the good cams, 240/248.

Half of '93 does as well...the later '93s and '94s all have lesser duration, and are most likely identical to S14 cams at 232/232.

So the OEM cam options are:

1) Use '91-92 cams for a littel peak HP increase, but mostly a shift of the power bands over to the right by ~300rpm...and smoother revs at high RPM.

2) Use 2 of the 248 degree '91-92 exhaust cams - One in the exhaust spot, one for the intake spot, but moved 4 teeth over on the sprocket due to dowel pin location. This basically replicates the Nissan Motorsports cam set...good for ~7-8 more RWHP up top, but decreased low end (below 3500).

I have run the '91-92s for +2 years, and recently swapped in an extra exhaust cam for my intake spot, and with the turbo, it's quite nice. I'm a happy camper...

Later - Brian

[s14=pimpin']

my friend installed those cams into his '97, and blew his motor shortly there after. he had other mods done, and raced his car every weekend. he blamed the cams for some of his problems, maybe a bad install?

if i was gonna get cams installed on my ride, i'd go with one of the fine aftermarket choices, not an oem nissan cam, imo.

[DriFt3r]

so the exhaust came will fit the intake side with no mods right?

[DriFt3r]

cam*

[node]

:: orion ::

tell us more!

Advance or retard by 4 teeth?

With the TWIN CAMS did you need to raise the idle RPM or is it just a little rough?

[crzycav86]

http://forums.freshalloy.com/u...&vc=1

[node]

YES! you rock!

Thank you