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<blockquote data-quote="EvilTwins" data-source="post: 8579860" data-attributes="member: 62345"><p>IMO the only real way to make a sequential setup work <strong>well</strong> would be to of course have the proper exhaust control (through valves). Obviously at lower RPM's you would need to divert most/all exhaust to the smaller turbo on each bank and then when you hit a certain RPM point you would want it to divert all the exhaust to the larger turbo. This is going to be very hard to setup because it's not like there are a lot of "kits" out there to make this easy. You're going to need to program some sort of computer to perform the necessary valve actuations and then of course you would need the the actual valves. Even if you were able to accumulate the necessary parts to do this it would definitely require a lot of time to set it up and get it working properly.</p><p></p><p>How do you plan to arrange the turbos? Here's a picture of the Supra sequential setup:</p><p></p><p><img src="http://www.max-boost.co.uk/max-boost/images/supra/sequential/sequential_physical_location.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>I found a website ( <a href="http://www.max-boost.co.uk/max-boost/supra/turbo.htm" target="_blank">SupraTT - sequential turbo operation</a> ) with some pretty useful information and diagrams that explain how the sequential setup works on the TT Supra. I'm guessing you already know this though (I certainly hope so anyway). Here are the diagrams that show how each turbo is controlled:</p><p></p><p>1st Movement: Allegro --- Low-rev operation (up to 3500rpm)</p><p><img src="http://www.max-boost.co.uk/max-boost/images/supra/sequential/7psi_pressurised_intake_exhaust.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>2nd Movement: Molto vivace --- Mid-rev operation (3500-3800rpm)</p><p>(Also known as 'prespooling' stage)</p><p><img src="http://www.max-boost.co.uk/max-boost/images/supra/sequential/10psi_pressurised_intake_exhaust.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>3rd Movement: Adagio --- Mid-rev operation (3800-4000rpm)</p><p>(second turbo coming on boost)</p><p><img src="http://www.max-boost.co.uk/max-boost/images/supra/sequential/EGCV_pressurised_intake_exhaust.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Fourth Movement: Fugal finale --- High-rev operation (4000+ rpm)</p><p>(second turbo full on boost)</p><p><img src="http://www.max-boost.co.uk/max-boost/images/supra/sequential/IACV_pressurised_intake_exhaust.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p>Anyways setting a system like this up is really going to be a nightmare. It's very easy to see why all the Supra and RX-7 guys ditch it because it is a huge hassle. But if you want to do it I say go for it. Just be prepared to spend a lot of money, have a lot of headaches and end up with something that in the end wasn't worth all the trouble.....</p><p></p><p>It would be cool to see pictures of a 4 turbo sequential arrangement though, it'd look like that 3d pipes screensaver!</p></blockquote><p></p>
[QUOTE="EvilTwins, post: 8579860, member: 62345"] IMO the only real way to make a sequential setup work [B]well[/B] would be to of course have the proper exhaust control (through valves). Obviously at lower RPM's you would need to divert most/all exhaust to the smaller turbo on each bank and then when you hit a certain RPM point you would want it to divert all the exhaust to the larger turbo. This is going to be very hard to setup because it's not like there are a lot of "kits" out there to make this easy. You're going to need to program some sort of computer to perform the necessary valve actuations and then of course you would need the the actual valves. Even if you were able to accumulate the necessary parts to do this it would definitely require a lot of time to set it up and get it working properly. How do you plan to arrange the turbos? Here's a picture of the Supra sequential setup: [IMG]http://www.max-boost.co.uk/max-boost/images/supra/sequential/sequential_physical_location.gif[/IMG] I found a website ( [url=http://www.max-boost.co.uk/max-boost/supra/turbo.htm]SupraTT - sequential turbo operation[/url] ) with some pretty useful information and diagrams that explain how the sequential setup works on the TT Supra. I'm guessing you already know this though (I certainly hope so anyway). Here are the diagrams that show how each turbo is controlled: 1st Movement: Allegro --- Low-rev operation (up to 3500rpm) [IMG]http://www.max-boost.co.uk/max-boost/images/supra/sequential/7psi_pressurised_intake_exhaust.gif[/IMG] 2nd Movement: Molto vivace --- Mid-rev operation (3500-3800rpm) (Also known as 'prespooling' stage) [IMG]http://www.max-boost.co.uk/max-boost/images/supra/sequential/10psi_pressurised_intake_exhaust.gif[/IMG] 3rd Movement: Adagio --- Mid-rev operation (3800-4000rpm) (second turbo coming on boost) [IMG]http://www.max-boost.co.uk/max-boost/images/supra/sequential/EGCV_pressurised_intake_exhaust.gif[/IMG] Fourth Movement: Fugal finale --- High-rev operation (4000+ rpm) (second turbo full on boost) [IMG]http://www.max-boost.co.uk/max-boost/images/supra/sequential/IACV_pressurised_intake_exhaust.gif[/IMG] Anyways setting a system like this up is really going to be a nightmare. It's very easy to see why all the Supra and RX-7 guys ditch it because it is a huge hassle. But if you want to do it I say go for it. Just be prepared to spend a lot of money, have a lot of headaches and end up with something that in the end wasn't worth all the trouble..... It would be cool to see pictures of a 4 turbo sequential arrangement though, it'd look like that 3d pipes screensaver! [/QUOTE]
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