Another DE Intake Cam in DET Thread

[mdb4879]

Ok, so it seems like a lot of people on here don't think this is much of a worthwhile upgrade, but I finally got a hold of a thread I read a couple years back and wanted to see what you guys thought of the theory in it.

http://www.nissanexa.com/showthread.php ... th+overlap

so what do you guys think? i figure if you have the time and money to play with adjustable cam gears and tinker with the timing while on a dyno then you may as well just buy cams. but as far as just dealing with stock parts what would you think?

[D_Stirls]

Don't know where the OP in that thread got his info but he is mistaken about the DE cam spec's. I suspect that he is mixing up the CA16DE spec's with the CA18DE spec's.
Here are the actual spec's:

EURO spec CA16DE....
In lift - 8.5mm
Ex lift - 8.5mm
In duration - 248
Ex duration - 248
In opens - 15 BTDC
In closes - 53 ABDC
In center lobe angle - 109deg
Ex opens - 59 BBDC
Ex closes - 9 ATDC
Ex center lobe angle - 115deg

JPN spec CA18DE S13...
In lift - 7.8mm
Ex lift - 8.5mm
In duration - 240
Ex duration - 248
In opens - 0 BTDC
In closes - 60 ABDC
In center lobe angle - 120deg
Ex opens - 59 BBDC
Ex closes - 9 ATDC
Ex center lobe angle - 115deg

JPN spec CA18DET S13...
In lift - 7.8mm
Ex lift - 8.5mm
In duration - 240
Ex duration - 248
In opens - 0 BTDC
In closes - 60 ABDC
In center lobe angle - 120deg
Ex opens - 64 BBDC
Ex closes - 4 ATDC
Ex center lobe angle - 120deg


Courtesy of Niscort

EDIT!!

Actually (now that i've found my full list of cam spec's) if you can find a EDM CA18de cam then the spec's he quoted are correct.

EURO spec CA18DE...
In lift - 8.5mm
Ex lift - 8.5mm
In duration - 248
Ex duration - 248
In opens - 16 BTDC
In closes - 52 ABDC
In center lobe angle - 108deg
Ex opens - 50 BBDC
Ex closes - 18 ATDC
Ex center lobe angle - 104deg

EURO spec CA18DET...
In lift - 7.8mm
Ex lift - 8.5mm
In duration - 240
Ex duration - 248
In opens - 0 BTDC
In closes - 60 ABDC
In center lobe angle - 120deg
Ex opens - 59 BBDC
Ex closes - 9 ATDC
Ex center lobe angle - 115deg

Courtesy of Niscort

[mdb4879]

plus they're in australia, thay have a lot of access to CA16DE's over there as well. but to be sure, what would their cam specs be? (the australian CA's)

[D_Stirls]

The EXA wasn't a big seller over here so they aren't exactly common and the regular Pulsar's here came out with a SHOC engine.
AFAIK all the CA16 all have the big lift and extra duration.
Form what i have seen, the engines that had the butterfly 8 port intake setup have the smaller inlet cam and the 4 port head engines have the bigger inlet cam, regardless of engine size.

From what i have found it's the timing difference that the bigger intake cam has that gives you the extra power, and really it more a midrange boost than outright peak power.

[mdb4879]

well, when i said they have a lot of access to them, i meant among the EXA owners. they already have the cams when the swap in a DET. and for those who don't want them there may be others in the community who do.

and i see what your getting at. well, i guess more torque can almost always be a plus, even if it's not in the top end

[r34 gtr]

Somewhere on this forum there are pictures of me measuring my CA16 cams vs. my 18DET cams. They are as stated by D Stirls above. Totally worth $0, but I wouldn't spend more than 20 or 30 bucks for them.