R33NT Posted January 26, 2006 Share Posted January 26, 2006 I went to APC the other day and i saw a RB25DE plenum which looked very similar to the greddy item. It apparently uses the standard injectors and a Q45 throttle body but is a cheap casting job. Has anyone actually had one of these fitted with good results? I ask because i have a crappy cut and shut with a front feeding (like GTR) inlet and i would like to replace it with this one if it is any good. I believe they said it costs around $700ish. Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/ Share on other sites More sharing options...
funkymonkey Posted January 26, 2006 Share Posted January 26, 2006 or you could spend another $300 and you'd have a real GReddy plenum? Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1901128 Share on other sites More sharing options...
R33NT Posted January 26, 2006 Author Share Posted January 26, 2006 True but i am told the Greddy item doesnt take the standard injectors. Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1901173 Share on other sites More sharing options...
sky30 Posted January 26, 2006 Share Posted January 26, 2006 also interested to know how good these plenums are. Anyone?? Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1901988 Share on other sites More sharing options...
2BNVS Posted January 27, 2006 Share Posted January 27, 2006 contact ISL-33P his plenum shits on greddy ones and alot cheaper ben... Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1902024 Share on other sites More sharing options...
Gts-t Posted January 27, 2006 Share Posted January 27, 2006 or you could spend another $300 and you'd have a real GReddy plenum? <{POST_SNAPBACK}> Does the real Greddy one bolt to a R32 RB25de head though, i am trying to locate a decent front facing plenum that will. Thanks funky Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1902158 Share on other sites More sharing options...
R33NT Posted January 27, 2006 Author Share Posted January 27, 2006 I checked out ISL-33P and his profile says a custom plenum (exchange) costs $1000 where the one i am talking about costs $700ish (from memory). Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1904059 Share on other sites More sharing options...
paulr33 Posted January 27, 2006 Share Posted January 27, 2006 what are you hoping to achieve by changing the plenum? its been covered many many times on the advantages and disadvantages of changing the plenum Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1904085 Share on other sites More sharing options...
Gts-t Posted January 27, 2006 Share Posted January 27, 2006 I checked out ISL-33P and his profile says a custom plenum (exchange) costs $1000 where the one i am talking about costs $700ish (from memory). <{POST_SNAPBACK}> Where is APC, i would love to see some pics of the cast one. Also paulr33, i need a front facing plenum like the greddy one for a 25/30 engine conversion so i dont have to lower the motor to far and can keep my strut bar. Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1904416 Share on other sites More sharing options...
2BNVS Posted January 28, 2006 Share Posted January 28, 2006 i have a 25/30 and for 1300 ariel (ISL33P) created a custom plenum that flows a shitloads more than most top jap brands (has flow tests to prove and also comes with 80mm throttle body and bolts to stock runners and fuel rail ben... Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1904562 Share on other sites More sharing options...
MYSTR33 Posted January 28, 2006 Share Posted January 28, 2006 pics to [email protected].. much appreciated.. Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1904581 Share on other sites More sharing options...
N I B Posted January 28, 2006 Share Posted January 28, 2006 Not sure about the RB china Greddy copy but early this week i did an SR Greddy copy on a basic S13 that fell from 280rwhp to 246rwhp and could not recover the power by retuning. I read somewere that the real thing does much the same. Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1904741 Share on other sites More sharing options...
2BNVS Posted January 28, 2006 Share Posted January 28, 2006 heres 2 pics, its not fully polished up yet though ben... Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1904845 Share on other sites More sharing options...
Roy Posted January 28, 2006 Share Posted January 28, 2006 It looks pretty, but id be much more interested in seeing pics of it dismantled, or in behiond the throtltle body Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1905062 Share on other sites More sharing options...
2BNVS Posted January 28, 2006 Share Posted January 28, 2006 ill get pics of the inside tomorrow to try and show how its pretty much full smooth theres no weld marks inside, no rough surface at all, and has been bench flow tested with less than 2% change within all 6 cylinders which i have recently seen a greddy one bench flow tested and it aint even close to that ben... Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1905083 Share on other sites More sharing options...
PHaT MR30 Posted February 8, 2006 Share Posted February 8, 2006 std injectors and rail fits these plenums Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1935246 Share on other sites More sharing options...
Bl4cK32 Posted February 8, 2006 Share Posted February 8, 2006 std injectors and rail fits these plenums <{POST_SNAPBACK}> Why wouldnt they? He uses the std runners. Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1935329 Share on other sites More sharing options...
Guilt-Toy Posted February 9, 2006 Share Posted February 9, 2006 (edited) Plazmaman Plenums are the best i have seen when looking to purchase a plenum. it works great and looks really good. They make em in some awesome 80tonne press. go to www.gtr.com.au and have a look there (UAS) $1150 They are easy to install and use the stock throttle body (or you get another flange for any other type) and they use the standard gasket and runners. Makes me engine bay look sweet and with the RB30DET i can fit my strut brace =) They have been flow tested and proven to make power as well. DYNO SHEET BELOW SHOWS RESULTS OF THIS PLAZMAMAN PLENUM & INTERCOOLER KIT FITTED TO A SKYLINE R33 GTS-T WITH STANDARD TURBO, STANDARD ECU (WITH FUEL CUT DEFENDER), STANDARD ENGINE INTERNALS, ADJUSTABLE EXHAUST CAM GEAR, RAM POD AND FULL 3" EXHAUST SYSTEM. Edited February 9, 2006 by Guilt-Toy Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1935830 Share on other sites More sharing options...
R33NT Posted February 9, 2006 Author Share Posted February 9, 2006 (edited) This is what the one from APC looks like. The difference is that this looks like it is meant to be there and it is apparently identical to the GREDDY manifold but takes the standard injectors (not standard throttle body). Edited February 9, 2006 by R33NT Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1935945 Share on other sites More sharing options...
Guilt-Toy Posted February 9, 2006 Share Posted February 9, 2006 I heard the greddy plenums dont flow very well and give you less power output so this is a direct copy it would be the same? Link to comment https://www.sau.com.au/forums/topic/103450-rb25-intake-plenum/#findComment-1936030 Share on other sites More sharing options...
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