ka-t topmount help guys!

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costa_rican13
Posts: 1553
Joined: Thu Jul 31, 2008 5:35 am
Car: 1993 s13 coupe

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so im planning on boosting my ka, and i have 2 turbos, a t3 z31, and rb20 (t3 flange)t28. now i dont want to bottom mount either of these, i want to do a topmount mani. so from looking at these turbos, the turbo elbow doesnt face down. so my question is would i have to cut the elbow and turn it down and reweld it or what ideas can you guys give me to help me out with this? i also dont want to buy another turbo..my z31 turbo looks like this>>Image
P7210029 by costa_rican13, on FlickrImage
P7210030 by costa_rican13, on Flickr the t28 from the rb20 looks almost identical but slightly smaller. either way the exhaust elbow does the same thing..


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s13drifter88
Posts: 1111
Joined: Wed Jun 23, 2010 7:40 am
Car: 93 S13 Coupe CA18DET (Money pit)
1996 D21 Hardbody (Work truck/daily)
!993 Del Sol (Daily)
1987 Pontiac GTA (Drag project, other money pit)
1989 SOHC S13 Buzz Car
Location: Huntsville, AL

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to do so you'll need a custom dump and some other crazy goodness. i myself wouldnt really even consider either of these. the z31 turbo is the better of the 2 tho seeing as how the z31 turbo has a standard steel exhaust wheel vs the rb20's ceramic which loves to fly apart when boosting about 13-14psi but neither of which will yeild more than about 270whp, maybe more with some good tuning.
If I were you and hell bent on a t3 top mount I would look into something like a new Precision SC50 for about $800 and an ebay cast manifold. with a little port work on the mani to clean things up a bit that setup could easily yeild 400whp. get a fmic, a set of 550's, 3" exhaust, tial 38mm wastegate and a jim wolf or enthalpy rom tune with a z32 maf and you'll have yourself a 350whp combo ready to be daily driven. if youre on a tight budget you could save a little cash on the wastegate, 2 friends of mine both run the basic $90 OBX 38mm with no problems, spikes, creep or anything (Zach for over a year-RB20 and Craig for about a year-KAT).

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costa_rican13
Posts: 1553
Joined: Thu Jul 31, 2008 5:35 am
Car: 1993 s13 coupe

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well i dont really have 800 to drop on a turbo and since i already have 2 i would like to use either which both have the same problem with the exhaust elbow. so im gona get a flange and weld it up since i have a welder and blah know anywhere to get the flange??. and youre talking about 550cc injectors correct?? anywhere to get those 550cc's on the cheap?? and not classifieds already looked.

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biggie
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Car: '16 Q70L/'14 Q60S Vert/'19 Armada/'09 FX35
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Locking this one because of the other topic:
topmount-on-the-ka-help-t521378.html


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