Muffleman Posted January 16, 2008 Share Posted January 16, 2008 Took my IC off recently to replace all silicon with samco extreme and put on mikalor clamps. However, is it normal to have a 4" in and 3" out ? It's a Blitz 4core IC. http://img146.imageshack.us/img146/9073/16012008021jh2.jpg Gave it a polish too Quote Link to comment Share on other sites More sharing options...
JamieP Posted January 16, 2008 Share Posted January 16, 2008 Ive seen that a few times. Edit....thinking about it im sure the ones ive see was 3" Inlet with 4" Outlet Quote Link to comment Share on other sites More sharing options...
Sean1933 Posted January 16, 2008 Share Posted January 16, 2008 I am sure they are normally both 3" on the off-the-shelf 4-row...so yes its modifed i would say. Quote Link to comment Share on other sites More sharing options...
SimonB Posted January 16, 2008 Share Posted January 16, 2008 If it's a Blitz LM, which is the only Blitz one as far as I know then as standard the pipes come out straight from the end tanks, not backwards at an angle like yours. So I guess it's been modified. Here's a pic of my Blitz LM I found lying around (the photo that is, not the IC!). Quote Link to comment Share on other sites More sharing options...
Muffleman Posted January 16, 2008 Author Share Posted January 16, 2008 Strange. My IC only has one mounting point at the top too, but clearly says Blitz on the top. Quote Link to comment Share on other sites More sharing options...
Sean1933 Posted January 16, 2008 Share Posted January 16, 2008 hmmm...maybe it was a one off made by blitz for Trial Quote Link to comment Share on other sites More sharing options...
SimonB Posted January 16, 2008 Share Posted January 16, 2008 Maybe Blitz supplied just the core as well, so people could make their own custom setups. Quote Link to comment Share on other sites More sharing options...
Muffleman Posted January 16, 2008 Author Share Posted January 16, 2008 Yeah maybe. Quote Link to comment Share on other sites More sharing options...
mr keef Posted January 17, 2008 Share Posted January 17, 2008 i'v seen coolers with different inlets/outlets sizes Quote Link to comment Share on other sites More sharing options...
michel lane Posted January 17, 2008 Share Posted January 17, 2008 looks like you have an IC for a skyline gtr, the end tanks are different from the supra due to the positioning of the pipe route on the skyline. hope this helps. Quote Link to comment Share on other sites More sharing options...
Muffleman Posted January 17, 2008 Author Share Posted January 17, 2008 looks like you have an IC for a skyline gtr, the end tanks are different from the supra due to the positioning of the pipe route on the skyline. hope this helps. Might be something to investigate, it certainly fits nicely Quote Link to comment Share on other sites More sharing options...
colsoop Posted January 17, 2008 Share Posted January 17, 2008 Definitely different to my old blitz unit. Quote Link to comment Share on other sites More sharing options...
JamieP Posted January 17, 2008 Share Posted January 17, 2008 Boostlogic IC has 3" in and 4" out according to one of Kyles posts. Quote Link to comment Share on other sites More sharing options...
Ryan.G Posted January 17, 2008 Share Posted January 17, 2008 looks like you have an IC for a skyline gtr, the end tanks are different from the supra due to the positioning of the pipe route on the skyline. hope this helps. Yup is a GTR intercooler. They have slighty different size outlets also, although never seen one with 4" outlet. Quote Link to comment Share on other sites More sharing options...
Terminator Posted January 17, 2008 Share Posted January 17, 2008 Would an IC with a three inch inlet and a four inch outlet induce more lag than same IC with equal sized inlet and outlet tubes? Quote Link to comment Share on other sites More sharing options...
Ian C Posted January 17, 2008 Share Posted January 17, 2008 Would an IC with a three inch inlet and a four inch outlet induce more lag than same IC with equal sized inlet and outlet tubes? It'd be more of a pressure drop, don't think it affects lag per se. -Ian Quote Link to comment Share on other sites More sharing options...
paul mac Posted January 17, 2008 Share Posted January 17, 2008 Took my IC off recently to replace all silicon with samco extreme and put on mikalor clamps. However, is it normal to have a 4" in and 3" out ? well whoever did it obviously knew their stuff as the inlet side has the hot air from the turbo, as it passes through the intercooler it cools and contracts so a smaller tube is needed on the outlet Quote Link to comment Share on other sites More sharing options...
Sean1933 Posted January 17, 2008 Share Posted January 17, 2008 I concur paul, should reduce any pressure drop given the reduction in pipe size Quote Link to comment Share on other sites More sharing options...
Muffleman Posted January 17, 2008 Author Share Posted January 17, 2008 Good to know Quote Link to comment Share on other sites More sharing options...
TrickTT Posted January 17, 2008 Share Posted January 17, 2008 Surely the pipework should be the same size or larger as you move away from the turbos. It will create back pressure on the turbo and make any throttle body bigger than 75mm a waste of time. Quote Link to comment Share on other sites More sharing options...
Supra Pilot Posted January 17, 2008 Share Posted January 17, 2008 It'd be more of a pressure drop, -Ian And Temperature follows pressure.. Quote Link to comment Share on other sites More sharing options...
rpslaughter1982 Posted January 17, 2008 Share Posted January 17, 2008 Yup is a GTR intercooler. They have slighty different size outlets also, although never seen one with 4" outlet. Just on this point, the skyline has the turbos on the other side to the supe so originally it would have been designed to have the 3inch on the inlet. Obviously this hasn't effected the performance on your car as it goes like a rocket Quote Link to comment Share on other sites More sharing options...
paul mac Posted January 17, 2008 Share Posted January 17, 2008 Surely the pipework should be the same size or larger as you move away from the turbos. It will create back pressure on the turbo and make any throttle body bigger than 75mm a waste of time. no this is a common misconception its basic physics (gas law), hot gas expands cold gas contracts, as it contracts it takes up less room hence you can use smaller pipework on the cold side, there are other factors that apply like velocitys and flow rates and there are some pretty simple equations to work all this out but it gets a bit more tricky once you introduce intercoolers and bends into a system, i dont know how much power a 75mm throttle body would support but i would bet its near to 800hp ! i think there is also a lot of marketing hype with intercoolers, and exhausts for that matter, that bigger and huge has got to be better, its really not necesarily the case Quote Link to comment Share on other sites More sharing options...
Terminator Posted January 18, 2008 Share Posted January 18, 2008 I concur paul, should reduce any pressure drop given the reduction in pipe size This makes perfect sense. What I don't understand, is why some Jap tuning houses used three inch inlet and four inch outlet continued four inch right to the throttle body. The IC in concerned in this thread, from a Skyline, had its inlet side as three inch and the outlet at four inch. I assume the IC was modified in Japan. So why the larger outlet? Given the excellent explanation above it does not make sense. Surely our Japanese friends would not make such a basic mistake. Quote Link to comment Share on other sites More sharing options...
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