Is This A High Port Sr20de

[Blue93G20]

IS THIS A HIGH PORT SR20DE
http://www.se-r.net/multimedia/pictu...e/mvc-032f.jpg
I HOPE SO....YEAH THE MOTOR LOOKS LIKE SHIT...CAN ANYONE CONFIRM THIS IS A HIGH PORT?

[Apeman]

I do believe that is a high port. If the throttle body is down low than the intake curves up and the ports are high on the engine.

Someone please correct me if I am making a monkey out of myself.

[AznVirus]

yes that is a high port engine. IIRC its 93.5 and before that had these engines.

[P10DET]

Originally posted by Blue93G20
IS THIS A HIGH PORT SR20DE
http://www.se-r.net/multimedia/pictu...e/mvc-032f.jpg
I HOPE SO....YEAH THE MOTOR LOOKS LIKE SHIT...CAN ANYONE CONFIRM THIS IS A HIGH PORT?

Yes indeed it is.

[GoodJuan]

Wat's hi port? Is it a good thing?

[Apeman]

The general consensus on the high port is that it flows better and makes more power at the high end.

It is believed that the low port has better low end power but does not have the high end breathing capability of the high port.

In the end I don't think the difference is all that significant and both respond well to mods.

[JustinP10]

There was also a slight difference in cams between the low port and the high port motors. I believe this makes one of the biggest differences in high end power. The high port makes a little more power after peak. As far as responding to mods, it depends on which ones you are talking about. I've noticed certain mods seem to be a little more effect on one motor or the other (but it may have just been one car or the other). So take it for what it's worth (and that's probably not too much)

[P10DET]

Originally posted by JustinP10
There was also a slight difference in cams between the low port and the high port motors. I believe this makes one of the biggest differences in high end power. The high port makes a little more power after peak. As far as responding to mods, it depends on which ones you are talking about. I've noticed certain mods seem to be a little more effect on one motor or the other (but it may have just been one car or the other). So take it for what it's worth (and that's probably not too much)

No, you are quite correct. With all the dyno days SERCA has been holding in SoCal, they've been getting pretty good data. It seems the low port really likes the S series cams - more so it seems than the high port. OTOH, the high port seems to like the C series cams better than the low port - but nobody with a low port has made enough tuning effort to be able to say that definitively. It seems to make some sense though since the C series cams pull like a MOTHER to redline.

I think the same has been found for other mods as well, so I think you are 100% correct based upon anecdotal evidence.

[FlossinPrimera]

HMMM, my high port doesn't look like that, it has a cover over the whole assymbly. What gives?

As you can see here where the intake tubing runs into the manifold, there is this cover. That is what mine looks like.

[JustinP10]

You high port looks suprisingly like a low port :jump:
You actually have a low port motor in your car. What model do you have? It almost looks like a Sentra engine bay? (mainly due to the placement of the radiator overflow tank)

(edit) opps, i'm stupid I see it right in your signature... heh

[FlossinPrimera]

Here's a better picture of what I'm talking about. It is in the non shaded region of the picture.

[Apeman]

That's a low port, and it looks like a 200sx.

[FlossinPrimera]

Ok, neither of those are my engine, but that is what I'm talking about, I have a 94 G20 (production date 1/94). It has a 7500RPM redline (indicative of high port, the low ports had a 7250RPM redline if I recall correctly)

[T4 Primera]

Originally posted by FlossinPrimera
HMMM, my high port doesn't look like that, it has a cover over the whole assymbly. What gives?

As you can see here where the intake tubing runs into the manifold, there is this cover. That is what mine looks like.

If that is your engine in the pic, then your engine is a LOW port motor.

My T4 is a '91 high port engine AND it has a 7500rpm redline.

[JustinP10]

Originally posted by FlossinPrimera
Ok, neither of those are my engine, but that is what I'm talking about, I have a 94 G20 (production date 1/94). It has a 7500RPM redline (indicative of high port, the low ports had a 7250RPM redline if I recall correctly)

HAHA, well that would explain why it looks alot like a Sentra engine bay The redline I believe, is the difference between an auto and 5-spd G20. I believe all p10's have the same redline (autos are all 7250 i think, and 5-spds all 7500) Those numbers may be off, but i think it's around there.