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Discussion Starter #1
I have a great throttle body mod that I have not seen anybody do before. This mod is for us guys w/ the B13 chassis.

To make this short, I placed a '95 SR20 TB on my engine. You have no idea how easy it was. It just bolts right up w/ no with other mods (w/ the expection of porting the intake modifold) at all. Instead of boring out the stock TB from 50mm - 54mm you can a 60mm (and/or 64mm if bored out). It is amazing the difference between the two TB's. The stock TB opening fits completely inside of SR20 TB.

All I can say is that the response from the engine amazing!! Try it out. The OEM '95 SR20 TB is about $180 or so brand new, so this is a much better way to go then boring out the stock TB.

Hopefully this helps some of you guys out...
 
D

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I picked mine up for $50. Are you using the stock intake piping? The rubber boot doesnt fit over it. I Have a cold air extension coming off the MAF but havent replaced the rubber boot with a pipe yet. Mostly because off the vacume ines that go into it.
 

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You know I forgot about the oem rubber tube. I bought a weaponR intake and all I needed was a larger coupling (the thing connects the pipe and the TB). The weaponR in tube is metal and (I think) is 60mm. And it uses all the stock vaccum lines also. Just like the Hotshot setup but w/o the cold air intake section. I just have one of those flexible metal tubes coming up from the bumper. The setup works really well, so far. Than again I really don't have any comparsions to compare too...

Hope this helps...
 

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Discussion Starter #4
I have a great throttle body mod that I have not seen anybody do before. This mod is for us guys w/ the B13 chassis.

To make this short, I placed a '95 SR20 TB on my engine. You have no idea how easy it was. It just bolts right up w/ no with other mods (w/ the expection of porting the intake modifold and getting a snorkle/intake pipe to fit the larger port) at all. Instead of boring out the stock TB from 50mm - 54mm you can a 60mm (and/or 64mm if bored out). It is amazing the difference between the two TB's. The stock TB opening fits completely inside of SR20 TB.

All I can say is that the response from the engine amazing!! Try it out. The OEM '95 SR20 TB is about $180 (or so) brand new or way cheaper if you go used, so this is a much better way to go then boring out the stock TB.

Hopefully this helps some of you guys out...
 

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A similar mod is very popular among us S12 200SX guys, especially VG30-powered SE cars, they can REALLY benefit from a KA24 throttle body, which is almost a direct bolt on and is 60mm in diameter, whereas the stock VG30 TB is 52mm. I know a couple owners of CA20E-powered S12's who have used KA24 TB's as well.
 

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Discussion Starter #7
As long as it fits the MAF sensor. The MAF for an SR20 I think is a little bigger (I mean little). Ask the guys that are you getting the intake give you a larger coupling. This might work...

Hope this helps out.
 

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Could someone explain how this works? :D Please :) I'm trying to think about it, but nothing happens. :( its a "more air" thing, right? :( is it really really worth doing?
 

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how about the wiring harness??? would it directly connent or would you need to rewire it???
 

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Larger TB's, straightened intakes, high-flow air filters, all help the engine draw in more air with less resistance, creating more power. When coupled with a lower-restriction aftermarket exhaust sytem, the power gains can be considerable.
 

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Discussion Starter #11
The TPS sensor plugs right into our harness. I know this works for the classic Sentra's the B13 chassis. Not sure if this works for the B14's.

Remember to get the TB from an SR20 later model, '95-on. I have a '95 SR20 TB.

Like I said before, this mod is great!! The TPS plugs right in and you have a 10mm bigger opening over stock. Can't get any better than this...:)
 

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dope i'll give it a try... hopefully it'll plug right in... i'm too lazy to rewire it... oh well...
 

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It could work on the B13 because of the OBDI system. It will not work on the B14 because of the OBDII system. The only way you can benefit from this is if you reprogram your ECU to recognize more air coming in and accomodate for this by sending in more fuel. Plus its not really worth it since a turbo'd GA16DE (depending on boost) can barely max out the current MAF. IMO, dont waste your money on this. Get a CAI. You can bore out your throttle body for free if you have a die grinder and some time.
 

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oh.
 

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I did this conversion 3 years ago. I too used a 95 SR20 TB, I have an automatic, and I had to convert the throttle linkage over to the SR20, The shaft is also different so I had to build uop the Sr20 shaft with brass sleaves and slip the pieces ove the shaft. It works well and I used the same TPS sensor it came with, just adjust the settings for the 1991-1994 1.6 codes. I have a snappy throttle now and it peels out, remember I have an auto, so this made the off the line torque much better. I also have the MAF working also. JWT reprogramed mine to work the voltage readings off the SR20 MAF, so that works also.
Chris 92 classic
 
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