Hi guys!
I've got an Apexi intake and am loving every moment of it, well except teh rattling that comes on at 1500 rpm then swiftly goes away as the revs climb.
I was looking at the intake and notice that the intake sits in between the cooling oil on the left and the car's heat shield on the right. As I also have the heat shield over the cone filter, this makes the intake a tad larger and it sits very close to both the cooling oil and the car's heat shield. The rattle comes when the intake's heat shield vibrates against the car's heat shield. Are ur intakes so close to the car's heat shield? Maybe I have not shoved the intake deep emough?
Pointers?
Rats - just taken mine off, otherwise I could post a pic.
Yes, it is a tight fit, but even with the shield on there is enough clearance if you make the appropriate adjustments. I'm sure you know how to do this if you've just fitted it! But, for the record.....
Two things you can try: First, the heatshield swivels a little if you loosen the two bolts that attach it to the filter.
Or, you can go for a more radical adjustment: if you slacken both ends of the two filter brackets and loosen the hose clip at the MAF adapter (in case you need to twist the Apexi pipe slightly), you should be able to get a decent position. Once you're happy, just tighten everything up.
10-1 says its nothing to do with the Apexi and everything to do with one of the heatshields on the exhaust, our car has problems with the welds on the heatshield and a broken weld or bolt can cause rattles at varying engine revolutions, check them and i'll gaurantee you'll find one loose.
other than that, why do you need the Apexi intake heat shield????, certainly not heat as you'll want to remove as much as possible around the intake
Quote from: "kanujunkie"10-1 says its nothing to do with the Apexi and everything to do with one of the heatshields on the exhaust, our car has problems with the welds on the heatshield and a broken weld or bolt can cause rattles at varying engine revolutions, check them and i'll gaurantee you'll find one loose.
Yep, I assumed the rattle had already been identified to the Apexi, but K'junkie makes a good observation - the exhaust heatshield issue is well documented elsewhere in the forum and worth a look. It tends to have the characteristic that you mentioned of hitting resonance somewhere between 1.5k and 2.5k. Nice work, Stu s:wink: :wink: s:wink:
FWIW, I don't think these induction kits can be described as cold air intakes in the engine bay of a '2 with
or without their heatshields. Some are better than others, but the stock box really is a good solution for drawing air from a cooler source - just doesn't sound as nice!
Quote from: "spit"Some are better than others, but the stock box really is a good solution for drawing air from a cooler source - just doesn't sound as nice!
Unless you have a TRD filter and Markiii inlet pipe.
Then later came the H&S and de-cat. Wow!
Quote from: "kanujunkie"10-1 says its nothing to do with the Apexi and everything to do with one of the heatshields on the exhaust, our car has problems with the welds on the heatshield and a broken weld or bolt can cause rattles at varying engine revolutions, check them and i'll gaurantee you'll find one loose.
other than that, why do you need the Apexi intake heat shield????, certainly not heat as you'll want to remove as much as possible around the intake
Hmmm I have looked into the heatshields and shaking each one of them individually (at least those I can see) seem to show that they are on tight. Is this the way to check them?
I suspect the intake cos when I tap the heat shield next to the intake, it hits the intake's heat shield.
OK I know now... I'll leave the intake's heat shield on (for protection agst the rain and water coming in from the top) and remove the car's heat shield that is next to the intake.
Will let u guys know of the result.
Quote from: "aureus"Hmmm I have looked into the heatshields and shaking each one of them individually (at least those I can see) seem to show that they are on tight. Is this the way to check them?
Diagnosed mine with a knuckle-tap at each spot-weld point, but even then it wasn't 100% obvious. Another point that can fail (albeit more rare) is one of the outer bolts holding front and back manifold shields on - more specifically the shields can corrode away from the bolt hole. Unlikely but worth knowing about. It happened to me.
Quote from: "aureus"OK I know now... I'll leave the intake's heat shield on (for protection agst the rain and water coming in from the top) and remove the car's heat shield that is next to the intake.
Will let u guys know of the result.
Don't leave it off too long - gets piggin' hot back there & you've got sensitive wiring around s:wink: :wink: s:wink:
Quote from: "roger"Quote from: "spit"Some are better than others, but the stock box really is a good solution for drawing air from a cooler source - just doesn't sound as nice!
Unless you have a TRD filter and Markiii inlet pipe.
Then later came the H&S and de-cat. Wow!
Exactly my configuration along with the Unichip; and it don't sound bad at all s:wink: :wink: s:wink: