TwinTurbo.NET: Nissan 300ZX forum - Re: oh please, nobody is "afraid" of anything
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Subject Re: oh please, nobody is "afraid" of anything
     
Posted by Bigwill837 on April 22, 2016 at 3:34 PM
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In Reply To oh please, nobody is "afraid" of anything posted by LJZTT on April 21, 2016 at 09:30 PM
     
Message I hope you don’t mind, I consolidated all of your posts so I could respond easier. It remains to be seen how the piping layout will contribute to the design.


“oh please, nobody is 'afraid' of anything. Thinking 'outside the box’ is great when solving a problem. What problem have you solved here? You basically reinvented the wheel. Cooling charge air effectively has not been an issue for at least 10 if not 15 years. You basically did a new way to get the same already achievable results with 10x more effort, and who knows how much more additional expense.....all in the name of ‘being different,’ which is really the only accomplishment here. It's all nice looking work so far.”

I think it has already been addressed below, but the reason for switching from SMIC to FMIC is to shorten piping length and reroute it for less bends, as well as use larger intercoolers.

As a general design rule for turbo systems, you want the turbo inlet to have the largest diameter possible, with the least amount of bends, and as close to the turbo as possible, while still drawing cold fresh air.

For intercooler piping, you want the diameter to be the correct size – not too big and lose intake velocity, but not too small and choke the turbo. 2.5” diameter is the relative consensus for the Z32 community. You also want the piping to be as straight and short as possible.

A FMIC allows you to accomplish these design goals. Just compare the amount of piping and bends of this…


…to this.

“and to be honest placing multiple heat exchangers in front of each other is not very ‘out of the box’ thinking, it is inefficient thinking. SMICs are out-of-the-box thinking, placing all heat exchangers each in their own fresh air path, brought to you direct from the manufacturer.”

It is less efficient in that it adds load to the engine cooling system, but it is more efficient in terms of the intake and intercooler piping. Plenty of cars come from the factory with intercoolers mounted on the front. Including the Nissan GTR. I don’t believe the SMIC design layout handed down by Nissan is any more sacred than the other parts we swap out without hesitation. Powertrix coilovers, StopTech brakes, Selin translator, 3” expansion downpipes, Haltech ECU, BDE Top Feeds all replace Nissan parts.

“no one is saying you are doing something ‘bad’ I'm saying despite the nice work so far, you are wasting time and money from a performance standpoint IMHO, especially given the car's purpose.
The only positive I see is that you aren't throwing some chinese ebay crap FMIC on the car. If you are going to waste your time, you are doing it in a quality way. Congrats I guess. So far so good.

Now if just ‘being different’ is the problem you need a solution for....then mission accomplished, high five. Hope your bank account can keep pace with your ego needs.”

Dunno why you’re taking it so personally. The design is focused on the intake and intercooler system. It’s cool if you don’t like it, but no need to be a jerk.

“nissan engineers didn't arbitrarily pick SMIC over FMIC "

All the more reason to switch to FMIC. Nissan doesn’t do anything arbitrarily, and they put a FMIC on the GTR. The GTR is more advanced than the Z32. I’m confident Nissan wouldn’t neglect the intercooler system layout when designing a more advanced car. I put my full faith and trust in the Nissan engineers.

“Track car talk is irrelevant, this isn't a track car. It is nice work, so far, as it is unfinished...but again there was no problem requiring this ‘solution.’

If the car makes more power, earlier in the power band, because of the FMIC setup, that is an advantage. It doesn’t have to be a problem to be an opportunity.

“‘Mod for a purpose’? I remember when that used to be a popular saying.
Don't get me wrong, do whatever you want with your car, he can do whatever he wants with his car, but don't pretend as if you accomplished something when all you accomplished was finding a more complicated, labor-intensive, and expensive way to do something that is already easily done.”


The purpose of the setup is to straighten the intercooler and inlet piping, use larger intercoolers, and improve the response of the car. Perhaps the approach is more complicated (designing the intercoolers, contacting Bell, mocking up the layout, fabricating pipes), but the layout is much simpler.

“maybe you're ‘afraid’?”

There does seem to be a common theme among TT.net users not to deviate too far from Nissan’s original Z32 design. SMICs, the intake plenum, and the mechanical cooling fan are all off limits pursuant to the Nissan design gods. “Afraid” was a poor choice of words. Perhaps dogmatic.

     
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