Drs541541
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Noise at 1800rpm ??
I keep getting this noise only at 1800-2000 rpm It doesn't happen aby other time but at that range What could it be youtu.be/nSFwggFwaHQ
post edited by Drs541541 - 2017/03/15 21:56:01
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Deco
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Re: Noise at 1800rpm ??
2017/03/16 08:52:43
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Ill be watching this thread, hoping someone can shed some light on it. As I have the same noise around the 2000 RPM range and cant for the life of me find what is causing it. Have worked out that the resonance in mine comes from somewhere between the drivers side CV and the sump area however.
1994 GT with 96 3SGTE (217rwkw)
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EssDub
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Re: Noise at 1800rpm ??
2017/03/16 10:50:34
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I have had SW20s sent to me with bottom end (rod bearing) rattle at around 2k rpm.
I haven't listened to your video yet, but it wouldn't surprise me if it was similar.
Currently... '03 Spyder 6MT - T28 inc... ------------------------------ Previously... '00 FD3S '94 SW20 Bathurst R '88 AW11 '92 SW20 G-Limited '90 SW20 G '91 SW20 Mongrel '94 G Limited T-Bar '92 GT-S Turbo
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Supremacy
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Re: Noise at 1800rpm ??
2017/03/16 11:18:10
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Sounds similar to my 3sge. I've done a big end bearing. Mine went mid track session.  Not saying yours is the same but sounds suspiciously similar. Question to ask is, has it been getting any worse?
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Drs541541
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Re: Noise at 1800rpm ??
2017/03/16 12:24:14
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Is there a way to tell if it's a big end bearing rattle before I pull off the sump ?
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Supremacy
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Re: Noise at 1800rpm ??
2017/03/16 12:51:52
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Not sure if there is. I wasn't sure to begin with. If it is, it will get worse rather quickly the more it runs.
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Carmikey
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Re: Noise at 1800rpm ??
2017/03/16 13:27:23
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Does it make any rattle on start up?
Before going any further engine wise, check complete exhaust system including mufflers & cats for any loose components.
I have had a lot of cats & muffler internals cause simular sounds.
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Drs541541
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Re: Noise at 1800rpm ??
2017/03/16 14:00:52
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It's fine on start up , no noises at all.
When I get home I'll check the exhaust system
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EssDub
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Re: Noise at 1800rpm ??
2017/03/16 16:02:23
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Unless a rod bearing is completely ferked, most of the time, when the oil is thick (read cold) it will be quiet. Its only once teh oil thins out that the noise will present itself.
I recently had a 3SGTE at my place with what turned out to be a seized oil relief valve - it managed to basically spin a fresh set of bearings in under 2000kms. No noise until warm, and only audible at between 2-2.5k RPM.
Currently... '03 Spyder 6MT - T28 inc... ------------------------------ Previously... '00 FD3S '94 SW20 Bathurst R '88 AW11 '92 SW20 G-Limited '90 SW20 G '91 SW20 Mongrel '94 G Limited T-Bar '92 GT-S Turbo
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mister2
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Re: Noise at 1800rpm ??
2017/03/16 17:15:59
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Hard to say from the video whether this is related, but at certain revs which create a resonant coupling, the edge of the heat shield over the exhaust manifold can start flapping quite vigourously and make quite a strange noise.
Easy to check either way.
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Phiz
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Re: Noise at 1800rpm ??
2017/03/17 07:42:52
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Bottom end usually presents itself at around 3-4000, never seen it below that.
Sounds like my N/a, and like the shims need to be redone.
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Reddtarga
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Re: Noise at 1800rpm ??
2017/03/17 10:33:42
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Nik_Lee
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Re: Noise at 1800rpm ??
2017/03/17 11:06:17
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If you are concerned about the condition of your bearings you could always get a used oil analysis done, it can be difficult do get an idea from a single sample but I do have some 3SGTE trend data.
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mcgregor
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Re: Noise at 1800rpm ??
2017/03/19 15:25:52
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Drs541541
I keep getting this noise only at 1800-2000 rpm
It doesn't happen aby other time but at that range
What could it be
youtu.be/nSFwggFwaHQ
Ive had this on 3 mr2's twice was laternator once was oil pump Sent from my iPhone using Tapatalk
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Danti
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Re: Noise at 1800rpm ??
2017/03/20 13:23:13
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if i can find my video on here im sure my 3sge sounded the same and it was all from timing belt. belt tensioner where the noise was coming from for my car and i got the Toyota timing belt kit and it was all gone
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