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| something to consider when looking for velocity stacks; technical info regarding runner length | |
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| Tweet Topic Started: Feb 7 2012, 09:49 PM (601 Views) | |
| morgey | Feb 7 2012, 09:49 PM Post #1 |
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stealth badger
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Right i know theres a load of different veiws on the ideal intake for these engines, and some people will have their own veiws on it aswel but take a little read of this article. http://www.emeraldm3d.com/articles/emr-adj-length-intake/ Yes this is done on jenvey throttlebodies and a ford lump, but the theorey is the same and the results are quite suprising. This bloke runs his own garage R/R and makes/helps develop his own ecu's and has plenty of years of experience. he also lives less than 1 mile away from me, so i will be paying him a visit at some point to see if i can try out or actually get them to fit on my 20v and may even invest in one of his ecu's as they are top notch ![]() enjoy your read! |
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| The Parrot | Feb 8 2012, 11:30 AM Post #2 |
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emerald are very good i know there used alot on imprezas over there. go get it done lol |
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| bigshark | Feb 8 2012, 01:15 PM Post #3 |
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Stage 6
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interesting read indeed! |
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| taz-20v | Feb 8 2012, 01:51 PM Post #4 |
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Stage 6
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Great Post! |
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| CroninDK | Feb 8 2012, 09:26 PM Post #5 |
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Stage 2
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+1 for that post you should take the car down and investigate the best lenghts then get back to us haha
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| morgey | Feb 9 2012, 12:08 AM Post #6 |
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stealth badger
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I intend to, but as my engines in an ep91 starlet I have even less room to play with than you guys. But im definatelt intreiged to see if I can find a good runner lenght for the space I have and the setup I intend to run
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| Sam_Q | Nov 27 2012, 10:16 PM Post #7 |
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Sam_Q
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To save everyone the hastle of trying I thought I would say that it seems that 150mm runners is the ideal length for a 20V with standard cams if there is enough room. I am organising to have a dyno run of the different lengths on a blacktop with a tune between each change. |
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| Levin BZR | Nov 29 2012, 01:13 AM Post #8 |
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They mat fit, but they will be close to the firewall, restricting the air going inside.. The most effective till now are Imec inside the plenum. |
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| Sam_Q | Nov 29 2012, 02:26 AM Post #9 |
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Sam_Q
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yes I figured, thats why I added "if there is room" I would like to see a run of the IMEC 35mm vs the 50mm I offer. |
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| viper33 | Nov 29 2012, 06:26 AM Post #10 |
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Stage 4
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^ Inside the plenum or open? Also I remember you posting something on facebook about you or someone else trying out all sorts of trumpet lengths on the dyno with a tune to see differences in power/torque, any idea when that would happen? |
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| bigshark | Nov 29 2012, 01:15 PM Post #11 |
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Stage 6
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imecs run are designed to run with plenum. |
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| Levin BZR | Nov 29 2012, 03:40 PM Post #12 |
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+111 I have them inside the plenum. |
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| Sam_Q | Nov 29 2012, 10:39 PM Post #13 |
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Sam_Q
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I need to organise it, both me and the other guy have had our hands full. I will see if he has the OEM stacks as well to compare. That way I can do my 50mm Vs OEM. The 50mm fits nicely inside the airbox, I will take some pics. |
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| viper33 | Nov 30 2012, 06:23 AM Post #14 |
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Stage 4
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Sweet, i'll keep an eye on your fb page Also I still owe you pictures for the adapter plate, i've been very busy past few weeks but i'll try and take some this weekend or next |
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| Sam_Q | Nov 30 2012, 12:15 PM Post #15 |
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Sam_Q
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Whenever your ready. I just had someone post their own pictures of the adapter plate installed that look really good. Watching my facebook page will work, anything vaugely interesting going on with my business gets posted up there. For example tomorrow I test fit my sample manual operation hydraulic belt tensioner. |
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you should take the car down and investigate the best lenghts then get back to us haha

2:35 PM Jul 11