hypergear Posted September 2, 2012 Author Share Posted September 2, 2012 I only have 50mm gates. that will work. For the turbo and engine size, any thing 38mm and above is fine. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6514261 Share on other sites More sharing options...
Birds Posted September 2, 2012 Share Posted September 2, 2012 I'm talking about a VQ not an RB. Why would the engine matter? The turbo will pump X amount of air, and if there are no restrictions any engine should run around 300 on e85 with an SS1PU, maxing out the compressor. Isn't displacement a restriction? I would have thought at a given RPM the turbo can pump more air through a 2.5 than a 2.0. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6514556 Share on other sites More sharing options...
Rolls Posted September 2, 2012 Share Posted September 2, 2012 (edited) Isn't displacement a restriction? I would have thought at a given RPM the turbo can pump more air through a 2.5 than a 2.0. Yes it is a restriction, hence why you need more boost to make the same power on a smaller motor, same as smaller cams need more boost etc etc. Though technically he accounted for that by saying "no restrictions" which basically takes the engine out of the equation and assumes a magic black box that has no friction/pumping losses etc lol. Edited September 2, 2012 by Rolls Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6514605 Share on other sites More sharing options...
qik32 Posted September 3, 2012 Share Posted September 3, 2012 Hey Stao, looking good with the manifold what are you going to use to weld it up with?? Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6515756 Share on other sites More sharing options...
Manuel Kasko Posted September 3, 2012 Share Posted September 3, 2012 Hey Stao, looking good with the manifold what are you going to use to weld it up with?? A welder... Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6515761 Share on other sites More sharing options...
GTSBoy Posted September 3, 2012 Share Posted September 3, 2012 I thought he was just going to leave those clamps on there. Mount the heat shields off them perhaps.... Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6515800 Share on other sites More sharing options...
qik32 Posted September 3, 2012 Share Posted September 3, 2012 I mean stick,mig or tig? Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6516093 Share on other sites More sharing options...
Cowboy1600 Posted September 3, 2012 Share Posted September 3, 2012 (edited) I mean stick,mig or tig? I'ma take a stab and say not any of those three. Brazing is the likely best and easiest way to weld steam pipe to cast. If not, then maybe Mig. I doubt Tig or arc would get a look in. Stao? Edited September 3, 2012 by Cowboy1600 Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6516115 Share on other sites More sharing options...
Dan_J Posted September 3, 2012 Share Posted September 3, 2012 (edited) I mean stick,mig or tig? you ask as its tricky to weld cast iron ? Edited September 3, 2012 by Dan_J Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6516119 Share on other sites More sharing options...
Crans Posted September 3, 2012 Share Posted September 3, 2012 Tig would easily do it, many people dont even bother pre heating the cast Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6516150 Share on other sites More sharing options...
Cowboy1600 Posted September 3, 2012 Share Posted September 3, 2012 Tig would easily do it, many people dont even bother pre heating the cast Just been doing some Googling on welding cast and it seems pretty much every method is possible, which I was unaware of, but tig and mig would appear to be the least popular for something like an exhaust manifold as many heat cycles causes it to become impregnated with carbon which makes it brittle. I found this site - http://www.weldingtipsandtricks.com/ there's some great info there for anyone who's interested. I love welding although don't get to do much these days. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6516401 Share on other sites More sharing options...
qik32 Posted September 3, 2012 Share Posted September 3, 2012 i have asked my local welding supply shop and they said to do it with the stick and preheat it before you weld Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6516738 Share on other sites More sharing options...
hypergear Posted September 4, 2012 Author Share Posted September 4, 2012 Updates: This is what the manifold is like after its been jigged up and reading for welding: Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6516914 Share on other sites More sharing options...
hypergear Posted September 4, 2012 Author Share Posted September 4, 2012 It is now complete and perhaps how Nissan should've designed them in the first place. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6516918 Share on other sites More sharing options...
ARTZ Posted September 4, 2012 Share Posted September 4, 2012 Actually doesn't look too bad.. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6516932 Share on other sites More sharing options...
89CAL Posted September 4, 2012 Share Posted September 4, 2012 Actually doesn't look too bad.. +1 How long before you go for some results Stao? Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6516998 Share on other sites More sharing options...
Cowboy1600 Posted September 4, 2012 Share Posted September 4, 2012 Did you calculate the extra volume? If not, it'd be great to do so. Block off the turbo outlet and fill that sucker with water. Then compare it with a stock one. Can't wait to see results. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6517006 Share on other sites More sharing options...
hypergear Posted September 4, 2012 Author Share Posted September 4, 2012 probably in a week or two's time. will post up some photos as its getting installed. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6517409 Share on other sites More sharing options...
jet_r31 Posted September 4, 2012 Share Posted September 4, 2012 that turned out well, can't wait to see how it pans out cheers darren Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6517480 Share on other sites More sharing options...
Cowboy1600 Posted September 4, 2012 Share Posted September 4, 2012 Also, would running a die-grinder around the ports to open them a fraction and smooth them out be beneficial? I know port shape and smoothness on intakes are very very delicate, but I don't think the same applies to the to side. In fact smooth ports might speed up gas flow which means faster spool. At least that's my uninformed theory Might have been worth running the die grinder over the whole inside while the back was off. Maybe give that a go next time. Link to comment https://www.sau.com.au/forums/topic/261613-hypergear-turbochargers-and-high-flow-services-development-thread/page/297/#findComment-6517509 Share on other sites More sharing options...
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