175 and or a 200 shot sizes
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Joined: Jul 2001
Posts: 173
From: Orland park. IL.
175 and or a 200 shot sizes
What is the Jetting for both on a NOS Kit? I have a kit I made with NOS parts that I made which has dual nozzles.
What would a 175 and a 200 shot be? I will just split the numbers that you guys got.
What would a 175 and a 200 shot be? I will just split the numbers that you guys got.
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Joined: Dec 1969
Posts: 10,745
From: Buffalo, New York
No, you can't divide jet size in half.
Example: for a 100hp shot with 1000psi bottle pressure and 55psi fuel pressure (what I run) the right nitrous/fuel jets is a 47/25. For 50hp it's 37/20. So, to get 100hp you could run one 47 jet or two 37's. The numbers refer to the diameter of the jet orifice. Flow is proportional to the area of the orifice and the area is proportional to the square of the diameter. So, doubling the jet size increases the nitrous flow by ~4 times. And dividing the jet size in half will provide ~1/4 the nitrous flow.
Rich Krause
Example: for a 100hp shot with 1000psi bottle pressure and 55psi fuel pressure (what I run) the right nitrous/fuel jets is a 47/25. For 50hp it's 37/20. So, to get 100hp you could run one 47 jet or two 37's. The numbers refer to the diameter of the jet orifice. Flow is proportional to the area of the orifice and the area is proportional to the square of the diameter. So, doubling the jet size increases the nitrous flow by ~4 times. And dividing the jet size in half will provide ~1/4 the nitrous flow.
Rich Krause
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