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20PSI 240SX 20PSI 240SX is offline
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Join Date: Jan 2003
Posts: 48
Quote:
Originally posted by Jared at Pelican Parts
20, can you fill me in on exactly what you would have to do in order to get this setup correctly for a motor with 10 to 1 CR?
thats not something i can do. i can give you advise. i would start out with maybe tapping into the knock sensors to use them to help you tune with. drop a few hundred buck on a nice wide-band o2 sensor for accurate a/f ratios. start with something in the low boost range, like 5-7 psi. keep an eye on your a/f making sure to stay around 11:1 in the higher rpms while under boost. a blown or turbocharged motor will need to run a lot richer because the cylinder pressures are a lot higher. heat causes detonation. the more fuel in the cumbustion process, the cooler the explosion is. a fast burn is also hot. high octane fuel actually burns slower, so this helps things.
try reading corky bell's book, guide to turbocharging. ..i think that was the title...i let a friend borrow my copy a while back haven't seen it since!
20psi
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1991 nissan 240sx
sr20det cp pistons, eagle rods, 740cc inj, k3t turbo, jwt s4 cams, lots of duct tape, GReddy headgasket
Old 01-22-2003, 06:18 PM
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