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Forged Performance: Cosworth Plenum test on Philthy's Car

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Old Feb 28, 2008 | 07:20 AM
  #121  
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Any boost leaking issues???
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Old Feb 28, 2008 | 07:26 AM
  #122  
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None that I've been made aware of - Sharif still has my car...
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Old Feb 28, 2008 | 08:12 AM
  #123  
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Hey Phil, curious about the specific trim for those turbos and the exhaust set up. Gorgeous car - the angled shot with your widebody modification looks amazing. Also that kit has twin intakes on it, correct?
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Old Feb 28, 2008 | 09:04 AM
  #124  
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Originally Posted by rcdash
Hey Phil, curious about the specific trim for those turbos and the exhaust set up. Gorgeous car - the angled shot with your widebody modification looks amazing. Also that kit has twin intakes on it, correct?
It has the stock PE twin intakes on modified piping... The exhaust was made by Don @ Straight Line Automotive - I love the way it came out, it features dual 3.5" catless stainless steel piping, V-Band fittings, with MagnaFlow Race Series mufflers, I'll dig up some pics later...

The compressor is a 62 trim-.60 A/R and the turbine is a 76 trim-.64 A/R… A lot of debate and time was wasted on deciding to keep the current setup or upgrade to the available .86 A/R housing – based on what I’ll be doing with the car this year I decided to keep the ridiculous fast spool and not sacrifice 400-500rpms for an extra 40-60whp… We choose to install a NOS kit for the drag strip and not compromise the street/road race setup.

Sharif should be finishing up the dyno tuning soon – current #’s @ ~15.5psi is a bit over 500whp on Sharifs’ dyno…
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Old Feb 28, 2008 | 11:47 AM
  #125  
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Ahhh so it's a 2860R (just like the 700bb except without the .86 A/R housing). That's sound reasoning for the application. N20 on top of that would be nuts - a blast for sure. Those turbos have more headroom if you use race fuel or meth (as another alternative). I think the compressor map is pretty efficient till about 21 psi - if it's the 2860R. The exhaust is 3.5" piping all the way back? Holy smokes! Would love to see pics.

Last edited by rcdash; Feb 28, 2008 at 11:53 AM.
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Old Feb 28, 2008 | 12:35 PM
  #126  
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Best I could do right now for pics...





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Old Feb 28, 2008 | 01:10 PM
  #127  
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Nicely done. Whoa - I can see the entire neighborhood in panoramic view from the reflection from you car!
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Old Feb 28, 2008 | 02:35 PM
  #128  
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Originally Posted by Philthy
We choose to install a NOS kit for the drag strip
You'll be when that instant TRQ hits off the launch!

Good stuff
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Old Feb 28, 2008 | 03:40 PM
  #129  
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Finally another AAM Fuel pump user. I was beginning to wonder if anyone else used one...Did you set it up as AAM recommended or did you run a return line from the Surge to the OEM tank?
How do you feel about the performance on the fuel end? Is it adequate?
Sorry about the OT, I couldn't resist. Those pictures just caught me off guard.
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Old Feb 28, 2008 | 05:01 PM
  #130  
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I'm running it just as AAM instructed, no need to install it any other way - it works just like it should.
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Old Feb 28, 2008 | 05:11 PM
  #131  
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One last question - promise: what lower plenum were you using with the Crawford (sorry if I missed it!). Thanks.
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Old Feb 28, 2008 | 07:09 PM
  #132  
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Originally Posted by rcdash
One last question - promise: what lower plenum were you using with the Crawford (sorry if I missed it!). Thanks.
Standard lower plenum....non rev up engine.
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Old Mar 1, 2008 | 10:35 AM
  #133  
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curious as to how revups will respond with this


also maybe polished versions would sell too..

rookie on g35driver polished his and it looks amazing
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Old Mar 1, 2008 | 12:47 PM
  #134  
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Originally Posted by paranormal
curious as to how revups will respond with this


also maybe polished versions would sell too..

rookie on g35driver polished his and it looks amazing
Polished is the only way to go! https://my350z.com/forum/intake-exhaust/334053-my-cosworth-plenum-2.html

Sharif; Any problems with Philthy's Cosworth?
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Old Mar 21, 2008 | 05:32 PM
  #135  
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Cosworth Plenum has been performing great so far - no leaks and it's handling the nitrous system with out any issues...

Some dynos runs of Sharif tweaking the new mods...
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Old Mar 21, 2008 | 06:49 PM
  #136  
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nice, what are the final numbers with the no2?
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Old Mar 22, 2008 | 07:41 AM
  #137  
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Originally Posted by Philthy
Cosworth Plenum has been performing great so far - no leaks and it's handling the nitrous system with out any issues...

Some dynos runs of Sharif tweaking the new mods...
That exaust sounds NASTY in those dyno runs!

Just to clarify... Your exhaust is 3.5" all the way from the down pipes to the mufflers? Also, looking at those picks it appears you don't have resonators. Is this correct?

So... How loud is your exhaust for daily street driving? It's hard to tell from that dyno vid (of course) how loud that exhaust is at idle and partial throttle.
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Old Mar 25, 2008 | 07:36 AM
  #138  
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Originally Posted by RudeG_v2.0
That exaust sounds NASTY in those dyno runs!

Just to clarify... Your exhaust is 3.5" all the way from the down pipes to the mufflers? Also, looking at those picks it appears you don't have resonators. Is this correct?

So... How loud is your exhaust for daily street driving? It's hard to tell from that dyno vid (of course) how loud that exhaust is at idle and partial throttle.
Turbo back is 3.5", no resonators and the MangnaFlow Race series mufflers only come in 3.5" or 4" (inlet/outlet), we went with the 3.5"...

The exhaust is actually pretty quiet when idling and/or cruising - but it get's REALLY loud when in boost...

Final dyno numbers should be coming today... Some pics Sharif sent me last night...





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Old Mar 25, 2008 | 07:57 AM
  #139  
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No leaks whatsoever...with Cossy+NOS+boost!!
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Old Mar 25, 2008 | 08:01 AM
  #140  
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...

Last edited by coachk; Mar 25, 2008 at 08:15 AM.
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