Nissan SR20DE Throttle body conversion

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

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Installation on the car was slightly difficult as the TPS also got in the way of a few vacuum hoses and rested against the intake manifold. 0, the TPS lever sits towards the front of the throttle body, rotating clockwise from the seven o'clock position to eleven o'clock. I managed to get the linkage assembly removed so far. Also another small detail I'd like to point out. As I am still trying to figure out how to do this, I'll tell you what I have encountered so far. Another bad part though, after the initial run down the street, engine idle was now at 3-4k!! My suspicions were of my poor, mis-calibrated TPS sensor. If you have only the filter with the MAF adapter plate, you'll need to go out and get the mandrel bent intake pipe with the proper sized couplers for the Se-r. This also proved ineffective as engine idle stayed the same. This set up caused the TPS lever to be out of spec with its position slightly opened up, even though the throttle was completely closed. You'll just need to stretch it over the mouth of the TB. After taking a little test drive around the block, the increased power was second to none, as I was even able to get some 2nd gear peel out on my 16"s. One thing I tried to do was flip the 1. There are two connections on the bottom of the TB for the coolant hoses.

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Approximate Word count = 1180
Approximate Pages = 5 (250 words per page double spaced)

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