jdizzy204 Posted March 31, 2006 Share Posted March 31, 2006 there are 2jzgtes that come from supras as well as aristos in japan and other car i believe. are they all the same besides the transmissions an ecus? Quote Link to comment Share on other sites More sharing options...
Z-Gad Posted March 31, 2006 Share Posted March 31, 2006 Well, basically they are all the same internally, except for the cams (JDM Aristo motors came with smaller cams). The Aristo motors also came with a front sump pan as opposed to the mid sump pan. There are other differences once you get outside the motors (Map vs Maf, ecu's, smaller turbos on J-spec model, etc) Quote Link to comment Share on other sites More sharing options...
BamaDave Posted March 31, 2006 Share Posted March 31, 2006 I believe they came with different, smaller injectors as well. The JMD 2JZ motors made a little less HP compaired to the US version. Quote Link to comment Share on other sites More sharing options...
93anthracite Posted April 1, 2006 Share Posted April 1, 2006 JDM has smaller injectors (440 vs. 550), ceramic turbine wheels on the turbo (USDM=steel), and less aggressive cams, Quote Link to comment Share on other sites More sharing options...
rsalicrup Posted April 1, 2006 Share Posted April 1, 2006 Well, basically they are all the same internally, except for the cams (JDM Aristo motors came with smaller cams). The Aristo motors also came with a front sump pan as opposed to the mid sump pan. There are other differences once you get outside the motors (Map vs Maf, ecu's, smaller turbos on J-spec model, etc) I believe 2JZ have a MAF and MAP sensors at the same time Quote Link to comment Share on other sites More sharing options...
Guest scottiedawg66 Posted April 2, 2006 Share Posted April 2, 2006 I believe 2JZ have a MAF and[/b'] MAP sensors at the same time that is in correct, how could a MAF and MAP be the same? The JDM cars run lower boost, and only have 280 hp (320 in US cars) due to some japanese law. This means they run lower boost, hence the 440 JDM injectors compaired to 550 US injectors. The other major difference is the turbine and compressor wheels, JDM turbos are not as durable as US turbos becuase JDM turbos use ceramic blades, which means faster spool at the cost of less total boost. Do not use a VVTI for a swap, the electrical is a mess when you try to mod them, they fight you with OBD2 and its a huge mess. ~scott Quote Link to comment Share on other sites More sharing options...
rsalicrup Posted April 2, 2006 Share Posted April 2, 2006 that is in correct' date=' how could a MAF and MAP be the same? The JDM cars run lower boost, and only have 280 hp (320 in US cars) due to some japanese law. This means they run lower boost, hence the 440 JDM injectors compaired to 550 US injectors. The other major difference is the turbine and compressor wheels, JDM turbos are not as durable as US turbos becuase JDM turbos use ceramic blades, which means faster spool at the cost of less total boost. Do not use a VVTI for a swap, the electrical is a mess when you try to mod them, they fight you with OBD2 and its a huge mess. ~scott[/quote'] If I understand this thread correctly it does say that the 2JZ runs on both sensors http://www.supraforums.com/forum/showthread.php?t=166713&highlight=map+maf+sensor Quote Link to comment Share on other sites More sharing options...
Guest scottiedawg66 Posted April 3, 2006 Share Posted April 3, 2006 It can run on either or, but most people opt for the MAP sensor for obvious reasons. Quote Link to comment Share on other sites More sharing options...
rsalicrup Posted April 4, 2006 Share Posted April 4, 2006 So it does have both. I wasn't sure about it. So the way it was explained to me the MAF work during normal driving and the MAP while there is boost but the MAF still read temp, is this correct? I do know that there is a ECU that only runs on the MAP sensor though. I hope you don't see this as a argument I wasn't sure I just head about it and I'm trying to get the right info. Quote Link to comment Share on other sites More sharing options...
cyrus Posted April 4, 2006 Share Posted April 4, 2006 Yes they are alot different oil pain injectors wiring ecu turbos cams egr lower exhaust manifolds Quote Link to comment Share on other sites More sharing options...
Guest scottiedawg66 Posted April 6, 2006 Share Posted April 6, 2006 oil pan is a good point if its an aristo or anything but a supra clip basically. But if you somehow got a supra front clip the oil pan is the same as USDM. ~scott Quote Link to comment Share on other sites More sharing options...
ProjectSR20 Posted April 6, 2006 Share Posted April 6, 2006 Doesn't the Lexus IS300 have a 2JZ in it. If so does it follow the same general rule? They share the basic motor design but have little things like cams, injectors, etc changed? Quote Link to comment Share on other sites More sharing options...
Silent Posted April 6, 2006 Share Posted April 6, 2006 Doesn't the Lexus IS300 have a 2JZ in it. If so does it follow the same general rule? They share the basic motor design but have little things like cams, injectors, etc changed? incorrect. the rods are weaker, the pistons are weaker. but the head flows better! just requires machine work to get it to fit the turbo block Quote Link to comment Share on other sites More sharing options...
rsalicrup Posted April 6, 2006 Share Posted April 6, 2006 on the IS300 I think you can transplant the internals from a Turbo motor and the head. The only difference is that you don't get to have oil sprayers for the pistons. I know this works on non-turbo supras and SC300s. Quote Link to comment Share on other sites More sharing options...
Silent Posted April 7, 2006 Share Posted April 7, 2006 the turbo head flows worse then the na head. hence why you port the na head for more fun. Quote Link to comment Share on other sites More sharing options...
rsalicrup Posted April 8, 2006 Share Posted April 8, 2006 the turbo head flows worse then the na head. hence why you port the na head for more fun.I know that, I was just say another way to "convert" a 2JZ-GE into a 2JZ-GTE. Quote Link to comment Share on other sites More sharing options...
Guest scottiedawg66 Posted April 14, 2006 Share Posted April 14, 2006 the turbo head flows worse then the na head. hence why you port the na head for more fun. I have never heard that at all. That comes as a total surprise to me, do you have any proof of this. I doubt that toyota would engineer a head the flows better for a NA motor than a turbo one? ~scott Quote Link to comment Share on other sites More sharing options...
Silent Posted April 14, 2006 Share Posted April 14, 2006 powerhouse dieman motorsports blast racing all of the said have tested this theory on a flow bench. Quote Link to comment Share on other sites More sharing options...
rsalicrup Posted April 15, 2006 Share Posted April 15, 2006 I have read it a few times on the supra forums. Quote Link to comment Share on other sites More sharing options...
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