For those of you who want to upgrade your throttle body on your GA16DE powered cars, there are a couple of options out there that you can do. You can have the one on your bored out by a reputable machine shop (i.e. JG engine dynamics) or, if you can get your hands on one, bolt on the throttle body from an SR20DE.

What's the difference in the two you ask? Well I'll tell you the advantages and disadvantages in installing the two. The GA16DE's throttle body's anatomy compared to the SR20DE throttle body is almost identical. The bolt patterns, coolant hook-ups, and vacuum lines all match up the same. But the only differences lie with the bore size, and the TPS configuration. With the 1.6 throttle body bored out to its maximum specifications, overall bore size will still not be as large as the stock bore size of the 2.0 throttle body. Which also leaves us to consider how much more potential there can be had with the 2.0 throttle body! If you can get your greasy hands on one of these throttle bodies, I'll let you guys know of some of the obstacles that will be encountered on making this modification work.

Necessary parts: There was not much needed here. You will n

The next idea I had was to spot weld a matching lever on the one o'clock position of the lever. Problem is I don't have access to a gas welder at the moment so that idea was chucked out the door. Last but not least, my idea was to completley disassemble and reassemble the throttle body's internals and make it so that its TPS lever was pointing towards the back. I managed to get the linkage assembly removed so far. Also another small detail I'd like to point out. On back of the throttle body, in the area where the TPS mounts on, there is a small tower that it rests on. You only need the two towers that the TPS bolts onto, so the third one that rests in the 3 o'clock position will have to be leveled off with a hacksaw. This is so that the TB's throttle position lever will move freely on that side.

Installation: Everything matched up perfectly, with a few exceptions. There are two connections on the bottom of the TB for the coolant hoses. You will have to slightly bend these so that they pint straight down, otherwise they will be hitting against the manifold. I heated them up on my gas kitchen stove, but if you have access to a butane torch then good for you! Heat up the connections a little bit (NOT RED HOT!) , and use a shop hammer to gently tap the tubing straight. You should be tapping the base of the body as you are not trying to actually bend the tube, you just want it to rotate in its base.

Well that's all for now. As soon as I can figure out how to take apart the butterfly valve, and its related assembly parts, I'll finish up part two. I'll also include some more SOTP test results and also give my impressions of the port matching job that I'll be getting from JG Engine Dynamics.

Some common words found in the essay are:
RED HOT, TB TPS, SR20DE What's, Se-r Otherwise, Home Depot, Pep Boys, James Jurado, throttle body, Hills Nissan, bore size, tps lever, o'clock position, engine idle, 16 tps, Dynamics James@teamnismocom, sr20de throttle body, engine dynamics, position lever, vacuum hoses, lever tb, 20 throttle body, jg engine dynamics,
Approximate Word count = 1180
Approximate Pages = 5 (250 words per page double spaced)