I called Hekimian today and asked about there engine. He said the they rebuilt an engine for an 89" maxima that produced 300hp with no force induction. But anyway I called to ask him if thay solded thottle bodies, well he said no because it wan't worth it, but he did suggest replacing the intake manifold to an 300zx intake manifold, he said that the Y in our manifold was very restrictive and I would notice an big difference. He also said that they placed header on that engine and it worked very well but it too hard to make for the car.

I was just wondering what you all thought about the 300zx manifold swap.

 

Hmmm... Thats a good idea, I wonder if it is a direct swap? And are they any taller than the stock manafold, hood clearence issues

 

what did they do to it for 300hp and how much did they charge? wouldnt that be a little hard on the tranny? the 300zx manifold sounds like a good idea. more details would be nice.

 

Where are you! Know one is answering my post, is it that know one has any suggestions or is this an stupid post?

 

a 210hp(probably "more" resonable on the tranny and STREETABLE!) on for $5k and the 300hp one for $8k....heres the addy: http://www.hekimianracing.com/nissan3lna.html

[Edited by DA-MAX on 02-14-2001 at 08:46 PM]

 

So, what do you think about the 300zx intake swap. Do you think it's an good I idea?

 

could you imagine adding a nos to that bad boy! i am definitly looking into that manifold swap.

 

Z31-T manifold?? hmmmmm....I'm gonna call tommorow after I get out of class and see what they have to say about it, anyone have any more info on this????
BTW Tonio what Level 10 tranny did you go with, stage 1,2 or 3? I'm thinking about a stage 1, but I might just go with a high stall TC and recalibrated VB this summer instead since I just got a "regular" rebuild a few months ago.

 

I have an Stage 3 Level 10 tranny that's being rebuilt for the 3rd time and yes the 3rd time by Level 10. People say the 3rd time is the charm.

When my tranny returns back form Level 10 I'm going to install my JWT Cams and thinking about this 300zx intake manifold swap.

 

i see in your sig that you got polished and ported heads. i really was interested in doing that myself a while back. i posted about it after seeing it done on tv. did you do it yourself? they made it look so easy on tv and i was about to do it then i chickened out. how much hp did you gain by doing this? was it signigicant? should i try to go ahead and do it myself, or is this something better left off to the pros? if you did it, can you give me some step by step instructions(and some encouraging words )?

 

I had my engine rebuilt and so I went ahead an had my manifold polished and ported. I did notice that my car accellarated alot quicker on the top end (doesn't hesitate at all) the JTW ECU helped alot also.

To answer your ?, I saw the menchanic work on it and it seems pretty easy w/ the right tools. So, yes I think you could do it yourself w/ the right tools.

 

Yeah, it is indeed a good idea. With the orientation of our motors (transverse mount), the idea of having the intake at the front of the motor was a bad idea from Nissan (from a performance standpoint of course) in that one intake runner is actually a little longer than the other.

This is why it's not the best manifold for even power distribution when running nitrous dry manifold kits.

I haven't seen a Z31 manifold in detail, but I would imagine that there would be some fiddling involved with the adjustment of the TPS, throttle cables (cruise and accelerator pedal), vacuum hoses and coolant lines (yeah, there is one there actually, linked to the bleeder screw on the top right corner of your existing manifold).

This will be the greatest obstacle of all will be the reshuffling of all those vacuum and coolant hoses. My first move would be to get the exploded diagram of our VG30E's upper intake manifold set-up and one of the Z31's VG30E(T) set-up. Then you also have the relocation of the EGR Control Valve. With any luck, it will still be able to bolt into the same location and not interfere with anything.

In a word, it will be a *****! I'm considering doing the same thing myself when I get the turbo in mine later this year, but it's going to take a lot of homework. Otherwise, I might just live with the existing inferior design at the expense of sacrificing a little horsepower. I don't think it would be that much of a gain, but as with anything in racing, every little bit counts.

If you really are keen on researching this further and getting Z31 manifold literature and stuff, feel free to pass any scans on to me as well. It will be of benefit to the both of us.