EZ-E Posted October 9, 2005 Share Posted October 9, 2005 I can attest to that, there is no way physically possible using the stock exhaust manifold on a ZX will you get 2 45's in there. I did run 3 inch and it is extremely close! Quote Link to comment Share on other sites More sharing options...
HeatRaveR Posted October 13, 2005 Share Posted October 13, 2005 If 2x 45-degree angles @ 3" won't fit on a 280ZXT w/B/W tranny, will a 2.5" one fit? Quote Link to comment Share on other sites More sharing options...
GrayZee Posted October 14, 2005 Share Posted October 14, 2005 If 2x 45-degree angles @ 3" won't fit on a 280ZXT w/B/W tranny, will a 2.5" one fit? No, you are in a zx you are basically stuck with 90's in which case you might as well go with 3" 90's Quote Link to comment Share on other sites More sharing options...
speeder Posted October 14, 2005 Share Posted October 14, 2005 This is the 3" downpipe I built for my T5'ed 280Z. My Stage 5 T3 turbine housing has about 2.8" outlet. I took a pie - shaped piece out of the tubing at the turbo flange and carefully shaped/bent it back together and welded to make the taper down to the turbo's outlet diameter. The flange was ported for a good match. The pipe sort of makes an S-turn down through the available space with 3 pieces of mandrel u-bends - 2 of them "about" 45* and the remaining one (the piece in the middle visible in the picture) just a very slight bend to give the necessary smooth S shape to rout the pipe outward around the T5. Dunno how "good" this pipe is, but it did get the connection between turbo and exhaust made with minimum bends and smooth transitions. Is a 3" worth it? Probably not on a stock L28et, but if you're building a downpipe out of mandrel bends, it's really not that much more trouble to do than a 2.5" one - just one more bend, making the transition to 3", and very careful measuring/jigging. Quote Link to comment Share on other sites More sharing options...
Guest Pete Z Racing Posted October 14, 2005 Share Posted October 14, 2005 Matt, ALL good advice! The experience that is on this HYBRD Z is amazing. I would not plan on moving forward with either 2.5" or 3."Till your turbo is purchased as you know there are too many variables at this point. Different flanges, different housing, different outlet locations, spacer used, and some like the GT35-R have only a 3" outlet. Don't waste your time cutting the old flange when new ones are easy to find and cheap, better welding surfaces. Turbonetics has a good selection of flanges and spacer and Tial has all the Garrett goodies. Z car guys are better fabricators than most I'm sure what ever you choose it will be faster than most Mustangs! <http://www.cardomain.com/ride/2116389> Have a great weekend. Pete P.S. If you want I sell a 1/2" stainless outlet flange for the stock turbo. $40.00 Quote Link to comment Share on other sites More sharing options...
Guest 73Turbo240z Posted October 14, 2005 Share Posted October 14, 2005 Matt' date=' ALL good advice! [/color'] The experience that is on this HYBRD Z is amazing. I would not plan on moving forward with either 2.5" or 3."Till your turbo is purchased as you know there are too many variables at this point. Different flanges, different housing, different outlet locations, spacer used, and some like the GT35-R have only a 3" outlet. Don't waste your time cutting the old flange when new ones are easy to find and cheap, better welding surfaces. Turbonetics has a good selection of flanges and spacer and Tial has all the Garrett goodies. Z car guys are better fabricators than most I'm sure what ever you choose it will be faster than most Mustangs! <http://www.cardomain.com/ride/2116389> Have a great weekend. Pete P.S. If you want I sell a 1/2" stainless outlet flange for the stock turbo. $40.00 what kind of exhaust manifold is that? Quote Link to comment Share on other sites More sharing options...
Guest Pete Z Racing Posted October 14, 2005 Share Posted October 14, 2005 Very close to an old H.K.S.,, I'm trying to have the turbo header in production by year end+-? Early simmer 06?. Pete Quote Link to comment Share on other sites More sharing options...
MusPuppis Posted October 15, 2005 Share Posted October 15, 2005 I'm trying to have the turbo header in production by year end+-? Projected price? That time frame for completion puts it right at the time I expect to be beginning my engine build.. Quote Link to comment Share on other sites More sharing options...
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