My first mod today.... - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Bill Roberts · 06-07-2003, 10:37 PM

As you folks are getting to know me, I have a bone stock (I thought) 1989 240SX SE Fastback with rusting hatch under the spoiler.

Well, I thought it was bone stock but my track times seem a shade fast compared to others times. KA24E.

I started inspecting the engine carefully and it has obviously been torn down and rebuilt. The identifyer is the orange silicone all over the place. The owner had it bored 40 over based on a receipt I found. I could not find what piston set, crank or rings were used. The head was probably machined (shaved) and so was the block.

Ok, for my first mod, I bought a K&N air filter. 45 bucks at autozone. I did it on a whim as when I had my ZR-1 Vette, it made a difference when I installed the new Air Filter.

This is a mod I would recommend. You can feel the throttle response and the midrange torque winding up a little more aggressively. Usually, when I make a left turn onto my street, I wait for traffic to clear and soft launch first to about 10MPH and then I hit it and the tires grip and sing some from torgue right before I straiten up. Today, all hell broke loose just from torque. they broke free sending the speedo up to 35. No popping the clutch, just torque.

I know that sounds radical but the tires were right on the edge of breaking loose before (done this dosens of times) and it was enough of an improvement to put it over the top.

BTW, I did a full computer reset when I changed the filter..so the new FAM would be "noticed"

I think this airfilter is definitly making a difference and with its lifetime guarantee, it is a no brainer.

Anyone experienced an increase with one?

I say it is proving to be a great investment so far.

06-07-2003, 10:37 PM	#1
Bill Roberts Zilvia FREAK! Join Date: May 2003 Location: S FL. Posts: 1,538 Trader Rating: (0) Feedback Score: 0 reviews	My first mod today.... As you folks are getting to know me, I have a bone stock (I thought) 1989 240SX SE Fastback with rusting hatch under the spoiler. Well, I thought it was bone stock but my track times seem a shade fast compared to others times. KA24E. I started inspecting the engine carefully and it has obviously been torn down and rebuilt. The identifyer is the orange silicone all over the place. The owner had it bored 40 over based on a receipt I found. I could not find what piston set, crank or rings were used. The head was probably machined (shaved) and so was the block. Ok, for my first mod, I bought a K&N air filter. 45 bucks at autozone. I did it on a whim as when I had my ZR-1 Vette, it made a difference when I installed the new Air Filter. This is a mod I would recommend. You can feel the throttle response and the midrange torque winding up a little more aggressively. Usually, when I make a left turn onto my street, I wait for traffic to clear and soft launch first to about 10MPH and then I hit it and the tires grip and sing some from torgue right before I straiten up. Today, all hell broke loose just from torque. they broke free sending the speedo up to 35. No popping the clutch, just torque. I know that sounds radical but the tires were right on the edge of breaking loose before (done this dosens of times) and it was enough of an improvement to put it over the top. BTW, I did a full computer reset when I changed the filter..so the new FAM would be "noticed" I think this airfilter is definitly making a difference and with its lifetime guarantee, it is a no brainer. Anyone experienced an increase with one? I say it is proving to be a great investment so far.