big-phil Posted November 10, 2005 Share Posted November 10, 2005 The turbo TB looks much smaller than my n/a TB plus my manifold looks to have been ground down on the inside (ported) I used the turbo TB at first in my turbo swap on my n/a manifold, and it felt sluggish with out boost so I then put my n/a TB on and the car feels great with out boost and even better with boost. Is the n/a TB and the turbo TB the same size, and the previous owner put on a 240sx 60mm TB? Mine is a 78 280z Turbo is 82. Quote Link to comment Share on other sites More sharing options...
Metro Posted November 11, 2005 Share Posted November 11, 2005 Very simple test, take out a ruler and measure it - 60mm is about 2 3/8 inches. I haven't measured it, but I was a bit surprised to see that my N/A tb has a larger inside diameter than the turbo. If I remember right, the turbo TB has a inside diameter of 50mm. Quote Link to comment Share on other sites More sharing options...
EZ-E Posted November 11, 2005 Share Posted November 11, 2005 Metro is right, if I remember myself correctly, the stock TB on the turbo is 50mm for the S130, and you can use the one from the Z31 which is 55mm. The 240SX is 60mm Quote Link to comment Share on other sites More sharing options...
s/cL3.0 Posted November 12, 2005 Share Posted November 12, 2005 Yeah I like how the stock T/B fits inside the 240sx T/B Quote Link to comment Share on other sites More sharing options...
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