air filter

polishhotdawg · May 24th, 2002, 06:44 PM

hi i have an 89 nissan sentra i was wondering if i can put a k&n air filter in it. the air filter is wierd its like almost flat. any thoughts?

RiceBox · May 24th, 2002, 07:11 PM

K&N does make a filter, but its not a performance cone filter.

sentrastud · May 26th, 2002, 09:26 PM

YES! You can do this mod. I take it your are referring to the GA16i engine. (it has a blue airbox)

Its not quite a simple drop in as K&N does not make one specifically for the GA16i. To get the filter search for either a 1987 or 1988 Sentra. These Sentras have E16i engines.

The filter that you will get is a round one about 3 inches tall. This is perfect because the airbox lid closes tightly enough for the filter to stay in place.

When i installed mine I put a tiny piece of duct tape over the small dip in the filterbox to prevent unfiltered air from entering the engine under the filter. If you do this mod I recomend you do this as well.

One more thing I recommend you do if you do this mod is rip or that black piece at the end of the intake pipe. I did this because it seems to restrict airflow. It comes off by removing a screw and then pulling really hard. *check the link at the bottom of this, it will take you to my pic website where there is a pic of the part i removed.

Also I am in the process of designing (and building a high flow intake using the stock tubing and possibly the cooling fan for "boost") Ill post a how to when Im done.

I hope this helps!

-Nick

polishhotdawg · May 26th, 2002, 11:51 PM

hey dude thanks that sounds cool im gonna try that tomorrow. hopefully it fits and everything. i cant wait to see your intake. latah

sentrastud · May 27th, 2002, 12:06 AM

My intake is gonna look Ghetto but Im thinking it will work!

If you have any other questions about the install or wanna see pics of what ive done, just ask and ill hook you up.

-Nick

polishhotdawg · May 27th, 2002, 12:11 AM

i sent you a pm but anyway if you didnt get it or somethin hook me up with any pics you have that would be cool

sentrastud · May 27th, 2002, 09:04 PM

Hi, i got your PM. Im posting the pics here in case anyone else wants to see em. I hope this helps. Oh when you do the mod, vacuum and wipe out your airbox first, in the pics mine has a bit of dust which i wiped out after i took the pics.

In case anyone cares Im doing a K&N filtercharger mod on a 98 Plymouth Grand Voyager 3.3L this weekend. Again if anyone cares or wants to see how this is done, PM me and Ill do a write up or something.

-Nick

p.s.- sorry about the size of the images...

RiceBox · May 27th, 2002, 09:16 PM

The TB on your car looks exactly like the one on by E16i. I wonder if intakes that fit GA16i's would fit my car too???

sentrastud · May 27th, 2002, 10:56 PM

Quote:

Originally posted by RiceBox
The TB on your car looks exactly like the one on by E16i. I wonder if intakes that fit GA16i's would fit my car too???

I bought a Haynes Manual last weekend and I was looking at the throttle body, in the pictures they appear to be perfectly identical. I had the exact same thought. It seems that the E16i and the GA16i have more parts interchangability than I had though.

I recommend heading to a junkyard and taking some measurements to be sure, but, I see no reason why GA16i intakes wouldnt fit E16i's.

-Nick

RiceBox · May 28th, 2002, 07:26 AM

I wonder if the injector or the GA16i has more flow then the one on the E16i. Maybe with a swap I could get more power???

sentrastud · May 28th, 2002, 05:57 PM

I dunno, how big is the throttle body on your E16i? I dunno how you would measure those things but, the one for the GA16i is probably a bit bigger. From the looks of it, they mount to the engine the same, so a swap shouldnt really be that hard, and it should provide more power too!

-Nick

dschrier · May 29th, 2002, 12:42 PM

Hw much power gain did you get from removing the end of the intake pipe and adding the KN filter? Are we talking 1-2 hp or something more substaintial around 5 or so. Also, would it make any sense just to cut away as much of the intake hosing as possible or would that disrupt the air flow? I wish K&N made a filter for our car....

RiceBox · May 29th, 2002, 01:22 PM

I've thought of hacking up my air filter housing but I'm afraid I'm going to make a mistake and break it permanently. If it doesn't make more power it will definitely make more noise!!!

dschrier · May 29th, 2002, 01:28 PM

Another question for sentrastud....does the air box cover crush the air filter at all possibly disrupting the air flow through the filter? Also, does anyone know where the Pcv valve is on a 90 b12? I have the haynes manual but the picture is from a ga16de and my pcv valve isn't in the same location in my car.

RiceBox · May 29th, 2002, 01:32 PM

The PCV valve is ibelow the TB. It's a wierd design. To test it, pull out the hose from the drivers side of the valvecover. There should be some suction when you put your finger over the end.

See pg. 1-35 in your Haynes