barneybrendan Posted December 14, 2009 Share Posted December 14, 2009 what does the butterfly do in the na intake plenum. what im thinking is cut it all away to open the middle completely,then make another y piece to connect to the converted plenum with a 3" intake from the intercooler. Quote Link to comment Share on other sites More sharing options...
w41k3r Posted December 14, 2009 Share Posted December 14, 2009 does it help with the torque Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted December 14, 2009 Author Share Posted December 14, 2009 does it help with the torque thats what im trying to find out.but will it be restrictive with the supercharger? Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 14, 2009 Share Posted December 14, 2009 Leave it in until the 'charger is in and working Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted December 14, 2009 Author Share Posted December 14, 2009 Leave it in until the 'charger is in and working that is one option but dont realy want to drop the size on the intake pipe from 3"to whatever it is on the standard y piece. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 14, 2009 Share Posted December 14, 2009 It alters the volume of the intake runners, a system Toyota introduced to UK and European models with the MK1 MR2 engine. You lock it mechanically open, or control it via the ecu. I think it's the least of your worries, myself! Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted December 14, 2009 Author Share Posted December 14, 2009 It alters the volume of the intake runners, a system Toyota introduced to UK and European models with the MK1 MR2 engine. You lock it mechanically open, or control it via the ecu. I think it's the least of your worries, myself! so is it a case of on tickover the butterfly is closed giving feed to each side and the more throttle you give it then it opens up so the air in each side mixes giving all runners an equal flow Quote Link to comment Share on other sites More sharing options...
bromy Posted December 14, 2009 Share Posted December 14, 2009 No difference was noticed on a NA-T with the butterfly removed. Why not buy this off me http://www.mkivsupra.net/vbb/showthread.php?t=85709&highlight=big+intake it will fit the original throttlebody. Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 14, 2009 Share Posted December 14, 2009 that is one option but dont realy want to drop the size on the intake pipe from 3"to whatever it is on the standard y piece. You're breaking some new ground (or at least old ground with many a crater in it) with the supercharger install as it is, if you want as little pain as possible just bung on a bit of hose to start with. Even if it chokes a chunk of power out, it's still not an issue until the supercharger is in, installed, mapped, working, and doesn't snap in half or jump the belt every time you rev it. Once you've got it all working, then do version 2 with a better intake manifold setup For now it's in the prototyping stage, so save your cash and sweat. -Ian Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted December 14, 2009 Author Share Posted December 14, 2009 No difference was noticed on a NA-T with the butterfly removed. Why not buy this off me http://www.mkivsupra.net/vbb/showthread.php?t=85709&highlight=big+intake it will fit the original throttlebody. just got rid of a plenum that fits the same way.i want to keep it going over the engine so pipe work isnt all on one side.as the charger is monunted where aircon was and throttle body is on the back of that.i would of had the inlet and outlet for the charger and the plenum intake all in a small area.plus the intercooler pipes running from one side all the way to the other. Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted December 14, 2009 Author Share Posted December 14, 2009 You're breaking some new ground (or at least old ground with many a crater in it) with the supercharger install as it is, if you want as little pain as possible just bung on a bit of hose to start with. Even if it chokes a chunk of power out, it's still not an issue until the supercharger is in, installed, mapped, working, and doesn't snap in half or jump the belt every time you rev it. Once you've got it all working, then do version 2 with a better intake manifold setup For now it's in the prototyping stage, so save your cash and sweat. -Ian that is true .plus it stays closer to the na setup.think i just needed somebody to tell me exactly that.plus i wasnt sure what the butterfly actually did Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 14, 2009 Share Posted December 14, 2009 http://www.celica-club.co.uk/wiki/index.php/TVIS_&_ACIS It's the ACIS system. There are some excellent explanations of this, but they are in the form of SAE papers and you need to be a member to access them. As others have said, just ignore if for now Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 14, 2009 Share Posted December 14, 2009 I really want to see a SC conversion for an NA get finished, having been teased all these years by projects that fell by the wayside or were just hot air all along So no getting sidetracked Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 14, 2009 Share Posted December 14, 2009 One of the first problems people fall down on is underestimating the shock loadings a S/C belt can impose on the S/C bracket and pulley system. Cogged belts are totally unforgiving, a Gilmer belt can at least slip. The bracketry for both the S/C itself, and all the drive pulleys need to be very stout and flex free. The belt needs adequate section, and the crank pulley / damper won't like loads on it that were never envisaged when it was originally specced. A from scratch turbo install is invariably far simpler than a supercharger. Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted December 14, 2009 Author Share Posted December 14, 2009 http://www.celica-club.co.uk/wiki/index.php/TVIS_&_ACIS It's the ACIS system. There are some excellent explanations of this, but they are in the form of SAE papers and you need to be a member to access them. As others have said, just ignore if for now just had a look that explains how it works perfectly for me.plus i know what that was under the plenum now (the tank)have to go find it now sure its still in the shed.the system does actually make sense. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 14, 2009 Share Posted December 14, 2009 the system does actually make sense. Toyota will be very pleased by your vote of confidence and approval, I'm sure Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted December 14, 2009 Author Share Posted December 14, 2009 One of the first problems people fall down on is underestimating the shock loadings a S/C belt can impose on the S/C bracket and pulley system. Cogged belts are totally unforgiving, a Gilmer belt can at least slip. The bracketry for both the S/C itself, and all the drive pulleys need to be very stout and flex free. The belt needs adequate section, and the crank pulley / damper won't like loads on it that were never envisaged when it was originally specced. A from scratch turbo install is invariably far simpler than a supercharger. all the bracketry is being made out of 5mm stainless plate.plus i have utilsed some of the original mounting brackets from the jag.the other plus side is the snout is the shortest production m90 snout.flex was definately a big conserne from the off.the charger is also getting bolted to the power steering pump bracket that used to connect to the aircon pump.i also have the jags original manual tensioner to be installed. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 14, 2009 Share Posted December 14, 2009 Is there another thread detailing this install? Any photos? Sounds very interesting! Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted December 14, 2009 Author Share Posted December 14, 2009 Is there another thread detailing this install? Any photos? Sounds very interesting! on my na supercharger build in supra chat.pics of the double crank pulley ect. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 14, 2009 Share Posted December 14, 2009 Got it, thanks, good luck with this, it's an ambitious project! Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 15, 2009 Share Posted December 15, 2009 Got it, thanks, good luck with this, it's an ambitious project! Needs 300deg cams and water injection as part of phase 2 as well Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted December 15, 2009 Author Share Posted December 15, 2009 Needs 300deg cams and water injection as part of phase 2 as well thats stage 3 with the turbo aswell Quote Link to comment Share on other sites More sharing options...
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