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View Full Version : Help with HLA Noise (Sound Clip inside)


Dragtek1
09-15-2008, 12:24 AM
Hello guys,

As some of you may know, I just picked up a S13 with a redtop motor in it. I've had quite a bit of problems with it, so I just wanted to make sure that the noise I am hearing is in fact the HLA's needing to be bled.

Here is a link to the sound clip: http://www.freewebs.com/dragtek1/SR20DET%20IDLE.wav

I apologize about the crappy quality, my cell phone is my only recording device. If you need a better quality version please let me know.

The noise is most pronounced in the lower RPMs. I would probably say it's loudest point is around 1k RPM... slightly above 850 rpm idle. After 1k RPM the noise is basically gone. I've tried using a screwdriver as a noise amplification device, but it isn't working too well. The noise is most prominant when I put the screwdriver on the #3 exhaust tube (SSAC manifold).

japside4life
09-15-2008, 09:37 AM
some of that sounds like HLA noise, but there is one part where the noise sounds kind of deep its hard to tell with the vid.

you should ditch those hla's anyway man nissan valvetrains factory are garbage, i can covert ur lifters to solid for ya if you like more info shoot me a PM.

Dragtek1
09-16-2008, 04:30 AM
Thanks bro, I sent you a PM!