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| Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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#29 |
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Add lightness!
Join Date: Apr 2012
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Simple version:
It's all about the volume of air being combusted per unit of time. If your engine is working at 9000 revolutions per second, it's effectively doing 1 (more or less) pump of air 9000 times a second. Any forced induction will compress the air before the engine pump can compress it more. It's like having 2 air pumps as opposed to just one. So the engine doesn't have to work as hard. |
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#30 | |
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Banned
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Quote:
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#31 |
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Resident Gear Head
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My block is done,
Just ordered my 13:1 pistons I have my crank. Total displacement with be 2.3ltrs https://www.facebook.com/BlueMisairuBRZ
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#32 | ||
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Senior Member
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Quote:
Quote:
You can make more power with FI on a stock motor than you'll make on a fully built NA motor, so your argument is without merit. |
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#33 |
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Because compromise ®
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I don't get spanked by anyone because I'm not competing against anyone.
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My car is completely stock except for all the mods.
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#34 |
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Senior Member
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IMO I think a harcore NA build would stand out alot more than FI. The FI gains will obviously be better hp/dollar, but wouldn't the N/A build have less reliability issues if done right?
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#35 | |
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Quote:
No, because boost isn't constant. High compression NA motors are always stressed. Not to mention high RPM's... |
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#36 | |
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Quote:
refer to earlier posts about the NECESSITY for high-HP N/A cars having to run race fuel, shit idle, etc. 24/7 just to maintain that stuff. Reliability is subject to build quality more than anything else |
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#37 |
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But don't the big turbo guys go through the same issues plus more moving parts?
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#38 | |
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Banned
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Quote:
High HP N/A motors have no 'vaccum/non-boost' threshold, and can only approach their frontier and enact a set force at any given load/rpm. Turbo motors have the ability to effectively remain N/A in negative boost situations. Turbos are load based, thus one can stay out of boost and elect to not have their motor go through the stresses that a high HP N/A car cannot. There's much more to running high HP, low displacement N/A than meets the eye. The outlay of costs to get significant gains pretty much entail that all else equal, the turbo guy can even blow his motor up and replace it before reaching the same amount of money spent. This is all YMMV but the concepts hold to any application |
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#39 |
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#40 |
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#41 |
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Señor Member
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How did this become a turbo vs NA thread? There are plenty of those already.
OP, to my mind the biggest piece of the puzzle we are missing for an "all motor" build is cams and maybe intake manifolds. We have built blocks available, we have heads, large valves, a great selection of tuning methods and headers as far as the eye can see. eg. You could get a fairly good setup together with Element Tuning heads and block, custom ground cams, motec M150, PTuning or JDL 4-1 headers (depending on the shape of torque curve you want) and of course supporting work on the intake side, port matching and big throttle body, Skunk2, Grimmspeed or Perrin big MAF intake... That is off the top of my head and I am not going to add up the cost of that list ![]()
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#42 |
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Will we see 220whp without E-85? Can it be done?
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