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Forced Induction Turbochargers and Superchargers..Got Boost?

LS2 350z Stage 3? =)

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Old May 27, 2011 | 12:38 PM
  #181  
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Dauuummmm...
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Old May 27, 2011 | 02:21 PM
  #182  
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Originally Posted by rcdash
What compression is the motor? Cannot seem to find it posted... How is traction - running drag tires on the street?

I didn't post much info about the engine anywhere. But compression is 8.9:1. Traction with boost by gear is awesome. I running twin 4 port solenoids and 3lbs springs in each wastegate. In first I got the boost down to 2.1lbs and it actually hooks up on my 295 street tires. I have 325/40/18 drag radials in my garage waiting to go on..im going do that about a week before I go to the track though. However, on 16psi (checked through data logger) I spun from 109-123 and the speedo settled back down to 114mph..so the higher I go in boost the less predictable it gets. The scary part is..its hard to notice because the car is stiff so it doesn't pull to either side at all. Also, I don't have any updated pics of the front end..but I cut the old one out and completely redid it. I was able to get the stock hood latch to work and it bolts to a bracket that bolts to the intercooler so its easily removable.

Last edited by SnyperZ; May 27, 2011 at 02:31 PM.
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Old May 27, 2011 | 02:27 PM
  #183  
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Moved the start button to the left. Its bright as hell but at night you cannot see it because its hidden perfectly behind the light/blinker stalk

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Old May 27, 2011 | 02:29 PM
  #184  
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I did the ARP 3" wheel studs and the caliper/rotor/stainless line..all in all it was pretty straight forward. My rims are RPF1 18x9.5 with a +18 offset (+38 with a 20mm spacer) and they fit perfect with absolutely no room to play. The top of the caliper has >1mm clearance but the face has more than the brembo. Im gonna finish them up tomorrow hopefully.

For some reason the calipers look the same size but they arent even close.




(don't mind the fact that the calipers are upside-down. I managed to some how do all four corners that way..haha) Im running endless RF-650 brake fluid.
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Old Jun 1, 2011 | 07:39 AM
  #185  
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FAIL























































I Mean fap
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Old Jun 1, 2011 | 07:54 AM
  #186  
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Is there an advantage to running twin solenoids vs just tying both wastegates to a single solenoid?
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Old Jun 1, 2011 | 01:05 PM
  #187  
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Yes, the wastegates respond MUCH better with the twin solenoids. No matter what I did last year I could not get boost steady with the single solenoid.. It would ALWAYS spike and slowly drop off 3-4psi by the end of every gear. Now I get a little spike in 1-2 and VERY small spike(.5psi) in 3rd and 0 in 4th now.
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Old Jun 2, 2011 | 10:12 AM
  #188  
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are you running 1 solenoid per gate of using 1 solenoid to control the top ports and 1 to control the bottom ports? I wouldnt imagine a simple EMS could do the latter though.
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Old Jun 2, 2011 | 10:53 AM
  #189  
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I don't understand why a solenoid controlling each wastegate helps control boost better and I thought this was a single turbo build so why are there 2 wastegates anyhow? Will try to dig into thread for info...
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Old Jun 2, 2011 | 11:53 AM
  #190  
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wastegate only needs soo much volume to open the valve, after that its vent out the other port. Those ports can only move so much air. So my guess is that the single solenoid couldnt vent enough air from the turbo. That could cause a boost spike because the gate cant cycle the air fast enough upon spool

2 gates on a single turbo would only be necessary if the single gate was too small on too big of a turbo running too little boost

Originally Posted by rcdash
I don't understand why a solenoid controlling each wastegate helps control boost better and I thought this was a single turbo build so why are there 2 wastegates anyhow? Will try to dig into thread for info...

Last edited by str8dum1; Jun 2, 2011 at 11:55 AM.
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Old Jun 2, 2011 | 12:51 PM
  #191  
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^ gotcha - makes sense, thx.
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Old Jun 4, 2011 | 11:56 PM
  #192  
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Originally Posted by str8dum1
wastegate only needs soo much volume to open the valve, after that its vent out the other port. Those ports can only move so much air. So my guess is that the single solenoid couldnt vent enough air from the turbo. That could cause a boost spike because the gate cant cycle the air fast enough upon spool

2 gates on a single turbo would only be necessary if the single gate was too small on too big of a turbo running too little boost

Perfect. But yes im running twin gates because they were easier to package and with the 4 port solenoids I can run my 3lbs springs up to 30lbs. I get 2.9psi in first gear lol(no wheel spin) to 4-5 psi in 2nd, 10 half way through third, then 14-18 in 4th(it spins hard if I try anything over 16psi right out of 4th)
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Old Jun 6, 2011 | 09:43 AM
  #193  
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Im pretty sure im going to be putting the car up for sale soon. Since I can't really get what I should out of it (id be looking for no less than 45 for the whole car) ill be selling it for 25k minus the engine/transmission/wheels/boost controller. (thats 20k less for 10k worth of parts lol) but the car will come complete with stock wheels aalong with the turbo kit and everything needed to swap another engine in. You could find a stock LS2/T56 for 5k on ebay and youd have a a pretty bad *** car pretty damn cheap. Im going to do another RX7 I think..and im keeping the engine for it.
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Old Jun 6, 2011 | 10:01 AM
  #194  
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did you trap 150 already? why you dumping the car? just bored?
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Old Jun 6, 2011 | 10:57 AM
  #195  
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Yeah im bored with it. I haven't worked on the car in weeks and its killin me lol. Nothing is breaking..even the tuning is perfect. Ive had the car for 3 years..its time for something smaller and faster.
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Old Jun 6, 2011 | 11:07 AM
  #196  
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too bad there wont b a show down with that TT rear mount turbo LS2 swap Z.
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Old Jun 6, 2011 | 11:11 AM
  #197  
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Originally Posted by str8dum1
too bad there wont b a show down with that TT rear mount turbo LS2 swap Z.

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Old Jun 6, 2011 | 11:15 AM
  #198  
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Originally Posted by str8dum1
too bad there wont b a show down with that TT rear mount turbo LS2 swap Z.
Did they ever make a thread for that CIN car?? I was wanting to do something like that if/when I start my swap(got to start hiding money from the wifey)
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Old Jun 6, 2011 | 11:43 AM
  #199  
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Never heard of the car. And whats the A+ award showcase next to my name all the sudden?
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Old Jun 6, 2011 | 11:47 AM
  #200  
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It is because you have a badass set-up There is mention of the car in the sts thread(i'll get a link for yah)

link
https://my350z.com/forum/forced-indu...hread-129.html
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