privatealpha Posted July 16, 2012 Share Posted July 16, 2012 Hello, Purchased some Nismo 740 (supposedly) Installed in the car and it runs pig rich. Good sign that these are larger than standard RB25 injectors. However, the Nismos i have, only have a single hole. From what I gather they are suppose to have a 4 hole spray pattern. Something odd here? Link to comment https://www.sau.com.au/forums/topic/404882-bought-some-nismo-740/ Share on other sites More sharing options...
Mitcho_7 Posted July 16, 2012 Share Posted July 16, 2012 you have a aftermarket/tuneable ecu I hope? If not put the old ones back in. Where did you buy them from, if ebay i daresay they will just be highflows Link to comment https://www.sau.com.au/forums/topic/404882-bought-some-nismo-740/#findComment-6446367 Share on other sites More sharing options...
Moodles2 Posted July 16, 2012 Share Posted July 16, 2012 Nismo 740 (4 holes): http://www.rhdjapan.com/nismo-high-flow-volume-injector-side-feed-740cc-10136 If they are indeed 1 hole, then you most likely have highflowed injectors, RX7 injectors (480cc) or SR injectors (270cc?). Both have red tops. Link to comment https://www.sau.com.au/forums/topic/404882-bought-some-nismo-740/#findComment-6446381 Share on other sites More sharing options...
privatealpha Posted July 17, 2012 Author Share Posted July 17, 2012 Hmm, doesnt sound good. Car is hopefully going in for a tune soon, so we'll see what happens. Car is running like a bastard, so its definitely larger in injectors. The mountain of black smoke on idle is an indicator. I had rx7 550cc injectors in my Corolla, so im familiar with the sort and its not them, besides they are a square plug. Link to comment https://www.sau.com.au/forums/topic/404882-bought-some-nismo-740/#findComment-6447433 Share on other sites More sharing options...
gotRICE? Posted July 18, 2012 Share Posted July 18, 2012 Did they plug straight in? or did you have to wire up new plugs? Nismo plug straight in. But it does sound like youve been duped unfortunately. Link to comment https://www.sau.com.au/forums/topic/404882-bought-some-nismo-740/#findComment-6448582 Share on other sites More sharing options...
privatealpha Posted July 18, 2012 Author Share Posted July 18, 2012 Yea didnt do any messing around, injectors in, connect plugs, and started car. Ill pull out injector number 1 just to sus it out... Give me...a few minutes. Link to comment https://www.sau.com.au/forums/topic/404882-bought-some-nismo-740/#findComment-6449079 Share on other sites More sharing options...
DVS JEZ Posted July 18, 2012 Share Posted July 18, 2012 Becareful if u pull the injector out while the rail is still in engine, as the rail is still full of fuel it will all run into the engine Link to comment https://www.sau.com.au/forums/topic/404882-bought-some-nismo-740/#findComment-6449404 Share on other sites More sharing options...
privatealpha Posted July 19, 2012 Author Share Posted July 19, 2012 (edited) Alright here are the injectors. They say a46-00 on them, the otherside is hard to mark out, looks like 0f69936 Cant make what of the injectors. The car runs rich as f**k, barely idles, billows black smoke out the back. Might have to get them flow tested. Edited July 19, 2012 by privatealpha Link to comment https://www.sau.com.au/forums/topic/404882-bought-some-nismo-740/#findComment-6450515 Share on other sites More sharing options...
Moodles2 Posted July 19, 2012 Share Posted July 19, 2012 The money is on them being SR S15 480cc injectors, minus the pintle caps (where the heck are they!!!?). Also looks like where the injector should be silver, has been painted black. Here's what they look like: http://1.bp.blogspot.com/_7y7I_iLm7Y0/S9aVoMAwDvI/AAAAAAAAAWk/UhJ6MCUuzY8/s1600/USED+S15+INJECTOR+480CC+NEAR+NEW.jpg You might not even have highflowed injectors even, just regular 480cc's. Link to comment https://www.sau.com.au/forums/topic/404882-bought-some-nismo-740/#findComment-6450862 Share on other sites More sharing options...
privatealpha Posted July 20, 2012 Author Share Posted July 20, 2012 Well i took injectors 1 and 6 to the fuel shop. They were the easiest ones to remove quickly whilst the rail still being attached. Results, injector 1 flows at 758cc per minute and injector 6 at 754cc per minute. So at this stage, Im just going to assume the other 4 are with in those margins. No idea what injectors they are but they flow exactly how it was advertised, a little more even. I guess if they aren't nismo's they are high flows? Possibly a high flowed S15 one? Link to comment https://www.sau.com.au/forums/topic/404882-bought-some-nismo-740/#findComment-6452022 Share on other sites More sharing options...
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