have you ever herd these? - idle knock and engine rattle
Rotary Freak
Joined: Jan 2004
Posts: 1,899
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From: tampa
the next thing to do would be pull the drive belts off and see if it changes. check the end play. if it realy does sound like it is coming from the rear of the engine, look behind the flywheel, how do the tension blots look? how is the oil pressure?
Originally Posted by impactwrench
Mine makes that sound but it goes away when you push in the clutch pedal. Thow-out bearing?
Originally Posted by mad_7tist
the next thing to do would be pull the drive belts off and see if it changes. check the end play. if it realy does sound like it is coming from the rear of the engine, look behind the flywheel, how do the tension blots look? how is the oil pressure?
Also the idle noise (to me) sounds like it's coming from somewhere near the rear of the motor. If I stand in the transmission tunnel it sounds like it's coming from back there. If I stand in the front the noise is much quieter. This was with the clutch/starter/transmission all removed.
Based on 3d hearing capability, it seems to me like the 2nd noise (at 2000-4000 rpm) sounds is coming more from the front of the motor, however it gets transmitted all over the place so it's hard to say exactly. If you put your ear to anywhere on the car frame you can hear it loud and clear. It's a pretty violent noise.
Based on 3d hearing capability, it seems to me like the 2nd noise (at 2000-4000 rpm) sounds is coming more from the front of the motor, however it gets transmitted all over the place so it's hard to say exactly. If you put your ear to anywhere on the car frame you can hear it loud and clear. It's a pretty violent noise.
Originally Posted by Kevin T. Wyum
2nd one sounds like a harmonic vibration. A lose nut or bolt or something of that nature.
we will keep looking.....
by the way, i removed the belt and did the test.... noise wasa still there..... water pump is not the noise maker.
im going to try to get a mechanics stethescop in there and see if we can do a better job of pin pointing where the noise is coming from.
im going to try to get a mechanics stethescop in there and see if we can do a better job of pin pointing where the noise is coming from.
Joined: Jul 2001
Posts: 10,672
Likes: 413
From: Charlottesville VA 22901
Man that's a very odd sound.
I picture something loose getting blown around by the exhaust but can't figure out how that could happen.
It's like somewhere in the exhaust is a steel bingo ball blowin around hehe.
Of course because of the violent nature of the sound a bearing is the more likely culprit and that could obviously spell disaster. Are you shifting at 9k or what?
I picture something loose getting blown around by the exhaust but can't figure out how that could happen.
It's like somewhere in the exhaust is a steel bingo ball blowin around hehe.
Of course because of the violent nature of the sound a bearing is the more likely culprit and that could obviously spell disaster. Are you shifting at 9k or what?
Full Member
Joined: Mar 2004
Posts: 94
Likes: 0
From: New Zealand
Could you drop off the front cover? sounds like the oil pump chain to me, I've never had one break the self tensioner on my FD but I did on my old RX3 12 Bridgeport, I know you say it sounds like it's coming from the rear but I thought I'd just let you know, good luck with it. I hate frustrating problems
Cheers
Cheers
Originally Posted by Fritz Flynn
Man that's a very odd sound.
I picture something loose getting blown around by the exhaust but can't figure out how that could happen.
It's like somewhere in the exhaust is a steel bingo ball blowin around hehe.
Of course because of the violent nature of the sound a bearing is the more likely culprit and that could obviously spell disaster. Are you shifting at 9k or what?
I picture something loose getting blown around by the exhaust but can't figure out how that could happen.
It's like somewhere in the exhaust is a steel bingo ball blowin around hehe.
Of course because of the violent nature of the sound a bearing is the more likely culprit and that could obviously spell disaster. Are you shifting at 9k or what?
>>Are you shifting at 9k or what
haha, well i got to do somthign to keep up with the big dawgs!!! hahah, no actually im conservative shifter, i ususally shift at 7ish.
Originally Posted by philkeoghan
Could you drop off the front cover? sounds like the oil pump chain to me, I've never had one break the self tensioner on my FD but I did on my old RX3 12 Bridgeport, I know you say it sounds like it's coming from the rear but I thought I'd just let you know, good luck with it. I hate frustrating problems
Cheers
Cheers
front cover comes off tomorrow, I am supposed to leave thursday morning for gingerman :-) .... ahh it always seems like this, major car tear down and reassembly 24 hours before a major event LOL
I LOVE IT!!!
wanna Hit 200+
Joined: Jun 2005
Posts: 519
Likes: 0
From: Las Vegas
i have the same sound sometimes as the first vid. like a mouse wispering noise and like yours its globle. but if i run the car really hard it goes aways. which tell me with heat expansion seals the gap where ever it is. I was thinking one day maybe a side seal came lose or something. I haven't seen the inside of the rotary engine infront of me so i don't even know if the seal would physically beable to get that lose to make the noise. i still havn't been able to figur it out.
Joined: Jul 2001
Posts: 10,672
Likes: 413
From: Charlottesville VA 22901
Originally Posted by FromSilvia2seven
i have the same sound sometimes as the first vid. like a mouse wispering noise and like yours its globle. but if i run the car really hard it goes aways. which tell me with heat expansion seals the gap where ever it is. I was thinking one day maybe a side seal came lose or something. I haven't seen the inside of the rotary engine infront of me so i don't even know if the seal would physically beable to get that lose to make the noise. i still havn't been able to figur it out.
That's not a mouse wispering it's a big over grown rat swinging a sledge hammer
Still on 1st engine
Joined: Jun 2003
Posts: 1,176
Likes: 1
From: SoCal
Damian, you're 'da man, and I'm sure you've done this, or something similar long ago. But just in case:
Have you tried feeling for the sound (with insulated mechanic gloves of course
), and/or putting pressure/torque on things (rocking the engine/exhaust) to see if the sound changes timbre?
Like Fritz says, have you been putting pinballs in the intake again?
Have you tried feeling for the sound (with insulated mechanic gloves of course
), and/or putting pressure/torque on things (rocking the engine/exhaust) to see if the sound changes timbre?Like Fritz says, have you been putting pinballs in the intake again?
Heheh, we definitely did lots of that. No dice. Did find a few things rubbing here or there, but nothing making clanky noise... I'll let Damian tell you about what was under the front cover. 
Originally Posted by InsaneGideon
Damian, you're 'da man, and I'm sure you've done this, or something similar long ago. But just in case:
Have you tried feeling for the sound (with insulated mechanic gloves of course), and/or putting pressure/torque on things (rocking the engine/exhaust) to see if the sound changes timbre?
Like Fritz says, have you been putting pinballs in the intake again?
Have you tried feeling for the sound (with insulated mechanic gloves of course
), and/or putting pressure/torque on things (rocking the engine/exhaust) to see if the sound changes timbre?Like Fritz says, have you been putting pinballs in the intake again?
Originally Posted by GooRoo
Heheh, we definitely did lots of that. No dice. Did find a few things rubbing here or there, but nothing making clanky noise... I'll let Damian tell you about what was under the front cover.