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[Z06] Against the grain

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Old 08-17-2018, 10:02 PM
  #361  
Mordeth
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Originally Posted by jayyyw
Me too. Great to hear you had success with his camshaft. I hear nothing but good things from everyone running his custom stuff.

I will be using the GZ Sportsman with the LS kit. Seems to be working well for the guys that run it.
I put one on last year and despite my concerted efforts I couldn't get it working the way I wanted on a road course. It actually worked too well and it would fill up my catch can in a few laps. I tried a million different combinations, hose routing and various vacuum settings and no matter what I did it would puke out the separator via the breather. Then the pump itself started leaking so I just ripped the whole thing off, including the modified valve covers etc.

I've still got the whole setup laying around in a box somewhere. I really wanted it to work as in theory it is an awesome mod. But it ended up being more trouble than it was worth based on my use (extended road course).
Old 08-20-2018, 07:51 PM
  #362  
Mordeth
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Heya Jay. It won't let me attach pictures to private messages for some odd reason. Here is what I got. You can have whatever you want.

Old 08-20-2018, 07:55 PM
  #363  
Josh B.
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I have a similar collection of Micro belts for my GZ. Some really great things happening in this thread.
Old 08-20-2018, 08:01 PM
  #364  
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Originally Posted by Mordeth
Heya Jay. It won't let me attach pictures to private messages for some odd reason. Here is what I got. You can have whatever you want.

PM sent
Old 08-20-2018, 08:52 PM
  #365  
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Moredeth for mayor rootin for Jay to take down more supras and modded cars with the new setup
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Old 08-21-2018, 08:11 AM
  #366  
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Originally Posted by JesC6Z
Moredeth for mayor rootin for Jay to take down more supras and modded cars with the new setup
Man, I was hoping to have a lot of content this weekend. I ended up shredding my belt after only racing one guy and my night was cut very short. Had 7-8 runs lined up with a great selection of cars.
Old 08-21-2018, 04:24 PM
  #367  
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Ordered a velocity stack to test out on the hi ram. The 4.5" intake is great for ingesting a TON of air, but I feel the air speed can be improved. I did some testing a couple setups ago with a 4" intake tube and velocity stack and it was good for around 15wtq and 8-9whp. That's pretty substantial for something overlooked by many people.

I also want to experiment with my nitrous nozzle placement. Currently, it's mounted down by the air filter. Off the hit, torque seems a little low @ 700wtq. I think moving it closer to the throttle body should net 30-50wtq and maybe another 5-10whp.

Can't stop tinkering with this thing.
Old 08-21-2018, 05:50 PM
  #368  
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Originally Posted by jayyyw
Ordered a velocity stack to test out on the hi ram.
At the filter end?
Old 08-21-2018, 05:55 PM
  #369  
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Originally Posted by MTPZ06
At the filter end?
Yessir
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Old 08-21-2018, 06:54 PM
  #370  
Pb82 Ronin
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Interested to see how that works.

Last edited by Pb82 Ronin; 08-21-2018 at 07:01 PM.
Old 08-21-2018, 07:02 PM
  #371  
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Originally Posted by Pb82 Ronin
I hope that doesn't cause a manifold surge. It shouldn't...but it could.
The last one caused some reversion in the MAF because of the bends I had to use. The MAF placement on this setup and the route of the intake is more optimized this time around. Never heard of manifold surge before.
Old 08-21-2018, 07:14 PM
  #372  
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Originally Posted by jayyyw
The last one caused some reversion in the MAF because of the bends I had to use. The MAF placement on this setup and the route of the intake is more optimized this time around. Never heard of manifold surge before.
Yeah, I thought about my comment and changed it. Surge is a VERY extreme definition for something highly unlikely in an NA combo. Think basically if the fluid reached max velocity through the intake manifold and couldn't turn down the port...the fluid (laminar flow) would then hit the wall violently and stall. This is a problem in jet engine inlet design, again...I edited my comment because it's pretty much a mythical unicorn in an NA application.
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Old 08-21-2018, 07:21 PM
  #373  
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Originally Posted by Pb82 Ronin
Yeah, I thought about my comment and changed it. Surge is a VERY extreme definition for something highly unlikely in an NA combo. Think basically if the fluid reached max velocity through the intake manifold and couldn't turn down the port...the fluid (laminar flow) would then hit the wall violently and stall. This is a problem in jet engine inlet design, again...I edited my comment because it's pretty much a mythical unicorn in an NA application.
Gotcha
Old 08-21-2018, 07:38 PM
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Is this what "sonic choke" is?
Old 08-21-2018, 08:10 PM
  #375  
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Originally Posted by Josh B.
Is this what "sonic choke" is?
No. A "sonic choke" is a purpose built turn, radius, or block, into a port or anything the has a flow through it that needs to be slowed down. Think "shock cone" on the nose of a fighter jet. For instance the MiG-21 or SR-71 linked here. https://www.quora.com/Why-do-some-mi...e-nose?share=1 It was one of the first fighter jets capable of sustained supersonic flight and they needed a shock cone in to slow the inlet air speeds to controllable levels. This ensured the engine wouldn't stall.

Flow through stacks greatly accelerate airflow to the point that some can reach near supersonic levels. Easily do-able in front of a compressor...think turbo. On an NA engine with ONE inlet, a stack should be cool. But you may get one or two ports (think front two), the velocity may be so fast that the port actually stalls or tumbles violently disrupting laminar flow. Just thinking out loud man. I'm merely rambling. Dyno will be the truth teller.
Old 08-22-2018, 12:24 PM
  #376  
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Here is one of the "Mach" calculators I use:

http://www.wallaceracing.com/machcalc.php
Old 08-22-2018, 01:36 PM
  #377  
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Originally Posted by jayyyw
Ordered a velocity stack to test out on the hi ram. The 4.5" intake is great for ingesting a TON of air, but I feel the air speed can be improved. I did some testing a couple setups ago with a 4" intake tube and velocity stack and it was good for around 15wtq and 8-9whp. That's pretty substantial for something overlooked by many people.

I also want to experiment with my nitrous nozzle placement. Currently, it's mounted down by the air filter. Off the hit, torque seems a little low @ 700wtq. I think moving it closer to the throttle body should net 30-50wtq and maybe another 5-10whp.

Can't stop tinkering with this thing.
Direct Port
Direct Port
Direct Port
Direct Port
Direct Port
Direct Port

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To Against the grain

Old 08-22-2018, 02:53 PM
  #378  
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Originally Posted by Millenium Z06
Direct Port
Direct Port
Direct Port
Direct Port
Direct Port
Direct Port
Lol, after I build a short block for the car. Right now, it works great.
Old 08-22-2018, 02:57 PM
  #379  
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Originally Posted by MickVette
Here is one of the "Mach" calculators I use:

http://www.wallaceracing.com/machcalc.php
Getting a value of .58
Old 08-22-2018, 03:06 PM
  #380  
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Originally Posted by jayyyw
Lol, after I build a short block for the car. Right now, it works great.
Do it !!!!!!


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