head differences?

[c-rad]

I found a Pulsar in the junkyard with a complete CA18DE motor. Are the heads identical minus the cams between the DE and DET? If so, I may snag it, gut it, port it, and rebuild it.

[biosehnsucht]

Cams should be the same, and it will bolt up without issue.

[c-rad]

Cams should be the same, and it will bolt up without issue.

Ok cool. I was thinking it might be like a Mitsu 4G63 head where the turbo cams had a more aggressive profile. Good deal then, I'll go pick it up for $45

[float_6969]

If you are wanting to put this in a 240sx, you'll need the intake mani. Also the alt. and powersteering pumps are in different places. the DE's didn't have a crankgirdle either. Just some stuff to think about...

[c-rad]

If you are wanting to put this in a 240sx, you'll need the intake mani. Also the alt. and powersteering pumps are in different places. the DE's didn't have a crankgirdle either. Just some stuff to think about...

No no no....I am getting a motorset. I was just going to pick this up for the time being as something to work on. The head on the motorset I am getting will be getting removed anyway for a new headgasket. I guess I should have made my intentions clearer. I don't want the whole motor....just the cylinder head.

[themadscientist]

ports are supposed to be different, smaller than S13 mills. Check that first. Other than that it should be fine. If you need a RWD intake and exhuast manifold I have that.

[biosehnsucht]

Interesting...

Did some searching, in Japan there are two CA18DE/T heads on the S13 series

11041-01YA0 is for 8903-9101 RS13, 8805-9005 S13, and 8801- T12/T12Y and 8709-8910 U12.

11041-01YA1 is for 9005-9101 S13, 8801- T12 (again), and 8709-8910 U12 (again)

Both are used for DE and DET purposes.11041-01YA1 is what is available in the US for the KN13, but not in Europe. In Europe they used 11041-46FA0 which shows in Europe for 8810- B12/N12 and 8809- S13; the B12/N12 are DE while S13 is DET. This european head only shows up in Europe; I presume this means all European CA18's are 4 port rather than 8 port.

As for the difference between the different JDM ones (one of which is also the USDM one) I don't know, there's nothing to differentiate them in FAST besides year and chassis (11041-01YA1 being never present on the RS13, but both being on the rest).

[float_6969]

My bad, I thought you were talking about the motor not the head. In that case, AFAIK they're the same. I've seen my head and a DE head side, by side and didn't see any difference.

[c-rad]

My bad, I thought you were talking about the motor not the head. In that case, AFAIK they're the same. I've seen my head and a DE head side, by side and didn't see any difference.

Good to know. For $45 I will take my chances. I'll post pics when I get it. Also, is there anything else worthwhile grabbing off it while I am there?

[float_6969]

All that idle crap off the intake! It's expensive when it's new!

[NeedCAforS13]

careful, the pulsar has an EGR bolted to the back of the head... there is a hole in the 4th exhuast port where the EGR goes, so you'll have to fill that hole with something. might cause some turbulence issues as well... Ray gave me his old CA18DE head and its sitting in my garage. Everything else is identical to the DET head I have though

Sean

[float_6969]

Has anyone compared a CA18DE(T) head to a KA24DE head? The reason I'm asking is because the CA uses hydraulic lifters, but the KA doesn't. If the KA cam buckets are the same size as the CA cam buckets you could have a REAL cheap way of upgrading to solid lifters. I would imagine the KA ones are too big, but if anybody has the oportunity two compare the to and let me know the differences, I'd really appreciate it.

[biosehnsucht]

I think the DET head has the same hole only it's plugged. look on the back of the head, there's a plug where the EGR would bolt up.

[NeedCAforS13]

nope, i mean the whole egr assembly... it is a large thing hanging off the back of the head (with a hole going to the #4 exhaust port). It would be easy to make an egr block off plate, the problem is that the hole in the #4 exhaust port would still be there, likely causing exhaust turbulence problems... i'll take pictures later, i gotta run to work.

Sean

[float_6969]

Sean, what Sehn said was right. If you look at the #4 exhaust port on the DET head the hole is there, it's just plugged off on the back of the head. I was thinking about having my engine builder fill it in, but I think I'm just going to do it when I get it back. I wasn't super impressed with the head work they were doing I'm just going to finish it when I get it back.

[NeedCAforS13]

damn it ryan, i hate when you're right. looks like the plug from a DET will fill the hole in the DE head. exactly 100% the same.

Sean

[themadscientist]

the euro heads are four port instead of the eight port we see in Japan and America. I've never had a euro head in my hand I heard it on a swedish Nissan site.

[undertaker]

The S13 DE head I'm using for my motor has the EGR port blocked off already so I guess Nissan cast that big hole in there just for the sake of a few FWD Pulsars!