Ryan.G Posted April 17, 2010 Share Posted April 17, 2010 That difference is incredible I can't get my head round why the twin WG setup alone would make any difference to spool - surely they are not doing anything until it's near full boost anyway? Could it just down to better exhaust flow in the manifold, collector design and pulse to the turbine? The manifold paul is now using is twin scroll so it has two separate volutes within the turbine housing. The main reason for doing this is to isolate the pulses coming from each exhaust port and maintain more of the pulse energy from each cylinder all the way down to the turbine wheel. If you can maintian more energy at the turbine wheel it then will spool faster. The firing order is designed around the manifold also on most TS manifolds so each bank of the scroll gets a pulse equally . The best way to control the boost is to have 1 wastegates of each scroll. This keeps the exhaust pulses isolated and maintains more of the energy. Pauls manifold has this... The Hks doesn't as it has one wastegate and all the pulses join in the collector. Another reason why it will spools faster slightly i reckon is the thickest of the manifold on pauls is alot! more than competiors so it keeps the energy isolated more. Only down side is it isn't light but i can never see one cracking! That will be £20 thanks Paul Quote Link to comment Share on other sites More sharing options...
lockys96 Posted April 17, 2010 Share Posted April 17, 2010 it looks, and from results is the same quality as full-race, and thats saying something Quote Link to comment Share on other sites More sharing options...
JamieP Posted April 17, 2010 Share Posted April 17, 2010 Wishing i tried a twin scroll turbo now, next time:) Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 17, 2010 Author Share Posted April 17, 2010 That will be £20 thanks Paul Whats that for the book you bought to get all this info out of? Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 17, 2010 Author Share Posted April 17, 2010 Wishing i tried a twin scroll turbo now, next time:) I'm sure there will be Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 17, 2010 Author Share Posted April 17, 2010 That difference is incredible Yep, still amazed myself and very very happy with the results of course, it did exactly what I wanted it to do but even more than I ever imagined. You wait until I go VVTi as well! Quote Link to comment Share on other sites More sharing options...
Homer Posted April 18, 2010 Share Posted April 18, 2010 Thanks for the explaination Ryan, makes perfect sense now So, not just the manifold on it's own, but a mix of good manifold design and a twin scroll turbo housing. Edit - Just a quick question (for Ryan/Paul), would the difference be noticable with a smaller turbo (e.g. "T67" size with divided housing?). I would imagine it being less noticable, but would it be worthwhile? Also, if the housing is divided would that mean a higher A/R thus negating the spool benefits? Sorry for the off topic Paul, can copy this to a seperate thread if you want, but might help you sell some more of these depending on the answer Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 19, 2010 Author Share Posted April 19, 2010 Thanks for the explaination Ryan, makes perfect sense now So, not just the manifold on it's own, but a mix of good manifold design and a twin scroll turbo housing. Edit - Just a quick question (for Ryan/Paul), would the difference be noticable with a smaller turbo (e.g. "T67" size with divided housing?). I would imagine it being less noticable, but would it be worthwhile? Also, if the housing is divided would that mean a higher A/R thus negating the spool benefits? Sorry for the off topic Paul, can copy this to a seperate thread if you want, but might help you sell some more of these depending on the answer I would imagine it would make a difference with any turbo, only way to know for sure and thats try it out. Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 19, 2010 Author Share Posted April 19, 2010 Some more updates today, been working hard getting ready for the first round of Time Attack this weekend. More pics of the front splitter/undertray fitted, nice flat bottom at the front now. Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 19, 2010 Author Share Posted April 19, 2010 Installed some griptape to the front floor pan to stop myself slipping on the metal floor Quote Link to comment Share on other sites More sharing options...
pete_TT Posted April 19, 2010 Share Posted April 19, 2010 Lookin good Paul, do you reckon it will make much differance to downforce? Where did you get the griptape from? Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 19, 2010 Author Share Posted April 19, 2010 (edited) Some of you will like these. Installed all of my Ikeya Formula rose jointed suspension, proper bits of kit these. Rose jointed toe arms, lower arms and traction rods. Also front lower arms which have adjustable roll centre positions which is nice for setting up the suspension properly, I'm hoping this will get rid of some of the low speed understeer our Supra's suffer with. I'm using Superpro poly bushes in the upper arms for the moment, I'll probably get some Ikeya Formula rose jointed upper arms soon, which will also enable me to increase the track as well, I'll need some wider arches to go with them though. Just happen to have a set of Ridox arches here... Edited April 19, 2010 by Paul Whiffin (see edit history) Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 19, 2010 Author Share Posted April 19, 2010 Lookin good Paul, do you reckon it will make much differance to downforce? Where did you get the griptape from? Hope so, wont really know until I try it out on Friday. Ebay for the grip tape mate. Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 19, 2010 Author Share Posted April 19, 2010 Also more or less finished my "MK2" carbon dash, well happy with the way this has turned out. I used some much thinner carbon this time and its all one piece and very flexible so easy to use and of course very very light. Quote Link to comment Share on other sites More sharing options...
Wez Posted April 19, 2010 Share Posted April 19, 2010 Very nice matey, cracking updates, the grippy tape is a nice touch as well. Have you weighed the car recently? Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 19, 2010 Author Share Posted April 19, 2010 Very nice matey, cracking updates, the grippy tape is a nice touch as well. Have you weighed the car recently? Not for awhile, I'm hoping to have knocked another 50kg off with the exhaust, heater, sound proofing and dash. But I've put a bit back on with the manifold and front lower suspension arms. So I'd be happy with 40kg weight loss, still a big chunk when your at the stage I am. Quote Link to comment Share on other sites More sharing options...
Kirk Posted April 19, 2010 Share Posted April 19, 2010 Wow if only mikes dash would work like yours Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 19, 2010 Author Share Posted April 19, 2010 Wow if only mikes dash would work like yours Has he read the manual? Quote Link to comment Share on other sites More sharing options...
STU_3LTR_TT Posted April 19, 2010 Share Posted April 19, 2010 Like the Ikeya suspension parts,would you use them on a wide body road car. Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 20, 2010 Author Share Posted April 20, 2010 Like the Ikeya suspension parts,would you use them on a wide body road car. Not really suitable for a road car, rose joints wont last long on our bumpy roads, depends on what sort of mileage you'll be doing? Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 21, 2010 Author Share Posted April 21, 2010 Finished off all the boost solenoid/wastegate piping. Done the whole lot in Goodridge fittings and braided hose, quite a few of them with the twin wastegates, took ages making them up. Then protected the hoses near any heat with DEi heat barrier tubing. Refitted the heatshielding to protect the master cylinders and the air box around the air filter to. Thats another job jobbed. Pretty much ready to go to Oulton Park Friday now, few bits and piece to do tomorrow and we are off. Quote Link to comment Share on other sites More sharing options...
Kirk Posted April 21, 2010 Share Posted April 21, 2010 Has he read the manual? Several times, he says he understands it all but when he puts it to practice it doesnt work Just tell steve to give him the 8 hour long lecture, trust me it will be like to pea's in a pod! Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 21, 2010 Author Share Posted April 21, 2010 Several times, he says he understands it all but when he puts it to practice it doesnt work Just tell steve to give him the 8 hour long lecture, trust me it will be like to pea's in a pod! Quote Link to comment Share on other sites More sharing options...
Luxluc Posted April 22, 2010 Share Posted April 22, 2010 Great work Paul Good luck to you, Steve and Darren for the W-E Quote Link to comment Share on other sites More sharing options...
Paul Whiffin Posted April 22, 2010 Author Share Posted April 22, 2010 Great work Paul Good luck to you, Steve and Darren for the W-E Cheers mate. Quote Link to comment Share on other sites More sharing options...
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