ka24de cams....

[thekage]

I know this discussion is old probly, And I searched it like crazy. ALL I GET are different answers from different people.I read that s14 cams out of a de are something like 207/210 and that s13 des were 240/248 and that you can repin another exaust to run 248/248...

Im rebuilding a 96 ka and swapping it into a 89 body. I picked up a set of 91 cams for cheap.. they are supposed to be 240/248 right?

The pdm page for cams says that stock s13 was 207 as well....And I have seen reputable members claim that all de cams are the same...Anyone know for sure??

[:: orion ::]

KA24DE cams specs:

'91 - Early'93 = 240/248Late '93 - '98 = 232/232

The specs you saw on the PDM webpage CANNOT be compared to the above #s...they were not taken at the same lift.

Another example...the JWT cams are advertised as 275/275...but when measured as the stock ones are, they come out to 256/256.

That is fact, no guesswork involved.

- Brian

[thekage]

Thank you so much Brian. Very much appriciated.

So my only question is.. how much difference is there really between 232, 240ish, and 256?

[:: orion ::]

S13 cams in an S14 will push the whole HP and TQ curves over to the right ~500rpms...and since HP is just a mathematical representation of TQ+RPM...if you move the TQ band into higher RPMs, you get more HP.

HP = [ (TQ+RPM) / 5250 ]

So even if you can make the same TQ at 500 higher RPM...you get more HP:

A stock S14 makes peak HP (125rwhp) at ~5700rpm. TQ at that point is only ~115rwtq.

Move that up to ~6200rpm...and at the same 115ft/lbs of TQ, you have 135rwhp.

Same EXACT power curve, just moved up in the revs a little.

...

In reality, you gain about ~8rwhp form S13 cams in an S14.

Now, look at the JWT cams, and it makes peak HP at ~6700...so the increase should be similar...but in reality, it's probably ~15rwhp more than the stock S14 cams, but there is a tradeoff for low-end. Not much, but it's present.

Hope that helps.

- Brian

[spacerust]

what can you add to a de then? if an s13 improves the s14 what will improve the s13?

[im two techno]

A header and ecu tune.

[corn322]

what's the cutoff between early and late '93?

[:: orion ::]

You can tell which cams you have by the intake manifold...if you have the secondary butterflies in you intake manifold, you have the good cams (240/248)

If you have a late '93 or '94 Vert, with NO secondary butterflies in the intake mani...you have the S14 (232/232) cams.

- Brian

[DarkStar]

He's right, I have the JWT cams in my s14. And it does lose power in the low rpm range. But when it hits about 4k it really takes off!

[im two techno]

I'm a fan of the 248 248 cam set. I bought a set from Nissan three years ago and they make more power in the entire power band than the stock 232 set wich i believe were made for emissions reasons only.

[EstoMax]

yea i put 248/248 s13 cams into my car.. with the other exhaust cam bein 4 pins to the left like the trick was. really nice now, after 4000 its an amazing difference, below that it lost a bit of power but thats ok its still got enough to cruise in 5th at 40mph

max

[PandaS14]

Enjuku sells crower cams too. full lineup for kade. crazy specs too.

[Xero]

I wish they had COMPLETE specs. I want duration at .050 and lift. All I see is advertised duration. You seen the whole info somewhere else?