need help ASAP
01-31-2007, 05:56 PM
#2
So it only happens when you're engine braking? Or also if you have the clutch in, coasting?
If only when engine braking, I had a similar problem with my downpipe hitting the crossmember under the tranny. The only way I could fix it, short of bending the pipe, was to put a hi-temp hose around the crossmember.
If only when engine braking, I had a similar problem with my downpipe hitting the crossmember under the tranny. The only way I could fix it, short of bending the pipe, was to put a hi-temp hose around the crossmember.
Reply
0
0
01-31-2007, 07:22 PM
#5
Guest
Posts: n/a
Total Cats: 0
it doesn't do it with clutch in...only in gear with NO gas....(only when im coasting in gear)
If i have the stock open diff...when i spin the rear wheel...which way should the other wheel spin? because when i spin the driver's wheel the pass side wheel stays still...spin the pass. wheel and the driver's wheel goes the opposite direction. noise coming from the rear end whel accelerating also.
If i have the stock open diff...when i spin the rear wheel...which way should the other wheel spin? because when i spin the driver's wheel the pass side wheel stays still...spin the pass. wheel and the driver's wheel goes the opposite direction. noise coming from the rear end whel accelerating also.
Reply
0
01-31-2007, 08:02 PM
#13
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,019
Total Cats: 6,587
My '92 has that problem. I've replaced the clutch, the driveshaft, the diff and the axles, as well as the entire exhaust from head to tailpipe. It's definately the transmission. Like you said, only does it when coasting / decelerating in gear. Touch the gas, depress the clutch, or drop it into neutral and it goes away. Seems to be loudest in the 2,000 to 3,000 RPM range. Mobil 1 75w90 in the gearbox quieted it down a bit, but not much. Redline MT-90 didn't affect it at all.
It's been doing this for two years, and been turbo'ed for the past six months. It still makes the noise, and yet the tranny is still working fine. I intend to ignore it until the gearbox actually dies, at which point it's fairly cheap to just throw another one in.
It's been doing this for two years, and been turbo'ed for the past six months. It still makes the noise, and yet the tranny is still working fine. I intend to ignore it until the gearbox actually dies, at which point it's fairly cheap to just throw another one in.
Reply
0
0
01-31-2007, 08:04 PM
#14
Elite Member
iTrader: (9)
Join Date: Aug 2006
Location: Concord, North Carolina
Posts: 4,160
Total Cats: 6
My '92 has that problem. I've replaced the clutch, the driveshaft, the diff and the axles, as well as the entire exhaust from head to tailpipe. It's definately the transmission. Like you said, only does it when coasting / decelerating in gear. Touch the gas, depress the clutch, or drop it into neutral and it goes away. Seems to be loudest in the 2,000 to 3,000 RPM range. Mobil 1 75w90 in the gearbox quieted it down a bit, but not much. Redline MT-90 didn't affect it at all.
It's been doing this for two years, and been turbo'ed for the past six months. It still makes the noise, and yet the tranny is still working fine. I intend to ignore it until the gearbox actually dies, at which point it's fairly cheap to just throw another one in.
It's been doing this for two years, and been turbo'ed for the past six months. It still makes the noise, and yet the tranny is still working fine. I intend to ignore it until the gearbox actually dies, at which point it's fairly cheap to just throw another one in.
Reply
0
0
02-01-2007, 07:25 PM
#17
Senior Member
Join Date: Mar 2005
Posts: 531
Total Cats: 0
thats a common miata tranny noise. almost every NA Ive been in with an OG un rebuilt tranny makes it.
Ive repaced my clutch, diff (upgraded to torsen) and basicly everything but the tranny, still makes it. it doesnt seem to make any trouble as Ivve done many events over the past few years and no trouble, no metal in the fluid when I change it.
what makes it quieter, high quiality fluid mobil1 or better basically. and shifter boots, new ones blocked a good 70% of it for me.
gluck.
oh and its for sure not the diff, that makes a whine, then a crunch, then a clang clang *LOCK* skid noise. I blew mine on the way to work one day. now I have a torsen.
Ive repaced my clutch, diff (upgraded to torsen) and basicly everything but the tranny, still makes it. it doesnt seem to make any trouble as Ivve done many events over the past few years and no trouble, no metal in the fluid when I change it.
what makes it quieter, high quiality fluid mobil1 or better basically. and shifter boots, new ones blocked a good 70% of it for me.
gluck.
oh and its for sure not the diff, that makes a whine, then a crunch, then a clang clang *LOCK* skid noise. I blew mine on the way to work one day. now I have a torsen.
Reply
0
0
02-01-2007, 10:23 PM
#18
Junior Member
Join Date: Jul 2006
Posts: 88
Total Cats: 0
If it's heard accelerating or decelerating between 2-3K RPM, I've always understood it to be a resonance in the exhaust at that rpm.
Mine suddenly appeared, actually not long after my LSD swap which totally freaked me out. It seems to come and go, and sometimes extremely annoying. You actually learn to drive around it reving faster through it, and downshifting to avoid that rpm range.
Funny thing is mine recently went away after changing spark plugs. I had put in colder plugs gapped to .030. Coincindence maybe.
Mine suddenly appeared, actually not long after my LSD swap which totally freaked me out. It seems to come and go, and sometimes extremely annoying. You actually learn to drive around it reving faster through it, and downshifting to avoid that rpm range.
Funny thing is mine recently went away after changing spark plugs. I had put in colder plugs gapped to .030. Coincindence maybe.
Reply
0
0
02-02-2007, 11:25 AM
#19
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,019
Total Cats: 6,587
I had the exhaust resonance of which you speak on my first attempt at a DIY spare-tire relocation. Boomy as hell, but, how do I say this, it was obviously a non-mechanical sound. Deeply resonant, but not harsh.
The tranny noise is different. It's more like a rattling or grinding, definately "metallic-sounding."
Boy, trying to describe a sound is like trying to describe a color to a blind man...
Reply
0
0
02-02-2007, 11:30 AM
#20
If it's heard accelerating or decelerating between 2-3K RPM, I've always understood it to be a resonance in the exhaust at that rpm.
Mine suddenly appeared, actually not long after my LSD swap which totally freaked me out. It seems to come and go, and sometimes extremely annoying. You actually learn to drive around it reving faster through it, and downshifting to avoid that rpm range.
Funny thing is mine recently went away after changing spark plugs. I had put in colder plugs gapped to .030. Coincindence maybe.
Mine suddenly appeared, actually not long after my LSD swap which totally freaked me out. It seems to come and go, and sometimes extremely annoying. You actually learn to drive around it reving faster through it, and downshifting to avoid that rpm range.
Funny thing is mine recently went away after changing spark plugs. I had put in colder plugs gapped to .030. Coincindence maybe.
Reply
0
0
