hey guys the damper on the diff . is it an pressed on bushing type of piece ? pretty sure it is.
ive never had to replace one . or locate one . or recycle one . can i even pull one off another diff?
whats years fit a 99 open ?
whats the correct name? Pinion damper
any gurus have the info ?
thanks
Last edited by urban; 09-14-2012 at 11:21 AM.
its a replaceable flange the entire flange /w damper needs to be replaced.
ive been reading that its possible to remove , but creatiing nvh. im sure it will increase the death of my diff.
removing the flange ( end of pinion to diff ) from the diff will require readjusting the lash.
im going to remove it , and see what it feels like.
btw . i noticed the prob at 70 mph with mass vibration.
most helpful link so far
http://www.miataturbo.net/suspension...flanges-66412/
Last edited by urban; 09-14-2012 at 05:19 PM.
does any one have any exp on this .
or do I really need to depend on MT.net
Yeah, I wish I knew about any of this shit. lol
Thanks for posting the links though, I'm sure it'll help someone in the future lol.
ask daniel for a blow up of it
What happened to your OEM one?
the rubber tore . it spun freely. im sure most na's should be failing by now.
i ended up cutting it off. not sure of the effect kn the drivetrain yet . but vibration is gone.2
I swapped a VLSD from an open in my 1990 recently and have noticed a violent vibration around 70mph, no shimmy believe me. So this looks like a possible culprit. How easy to cut off? Thoughts on cons? NVH reducer for the scarf wearing Miata drivers?
1990 NA Base Bass Boat Black no AC/PS/Radio, TRM C1s 15x7.5 with 205/50-15 RE-11s, ES bushings diff/CAs, V8 ball joints, Plastidipped OEM Hardtop, HDHCHTDD, XSPower header, Enthuza hifo cat with racer CB, ART modded AFM, Spin-induc intake/K&N, revalved Hard-S Bilsteins 650f 7"/400r 7", OBX collars/sleeves, RB hollow FSB with blocks, no RSB, Thompson two point front brace and Mazda rear control arm brace, VLSD.
I posted earlier re: drive train vibration. The harmonic balance weight does separate more than we see. BSI ( a spec shop ) has my car now fixing that and a fused throw out bearing. The bitch was so fused tight they needed a come along to get the transmission out of the car. We did discuss this weight at length but decided mine was ok so they left it on the drive shaft.
BSI removes this weight from every Spec Miata they build. According to the engineers at Mazda in Japan the Miata has an inherent vibration that would irritate the average driver so for "creature comfort" they added that balance weight.
Leonard, I have seen them fail/break, spin free. I have no experience with them, but I know race teams won't install a diff that has that damper missing or damaged. I haven't heard any positives or negatives to running without one, though.
Not on 1.6s so now Im off for a precision balance
1990 NA Base Bass Boat Black no AC/PS/Radio, TRM C1s 15x7.5 with 205/50-15 RE-11s, ES bushings diff/CAs, V8 ball joints, Plastidipped OEM Hardtop, HDHCHTDD, XSPower header, Enthuza hifo cat with racer CB, ART modded AFM, Spin-induc intake/K&N, revalved Hard-S Bilsteins 650f 7"/400r 7", OBX collars/sleeves, RB hollow FSB with blocks, no RSB, Thompson two point front brace and Mazda rear control arm brace, VLSD.
Kind of related
Seems that our NB drive shafts and the NA shafts without the replaceable U Joint can develop a flat spot and cause vibration at steady speeds of low 60's to mid 70's and smooth out just like a poorly balanced tire at 80 mph. They also over time will develop a really noticeable vibration during declaration The fix.....a new or good condition drive shaft replacement.
Heavy sigh,ask me how I know
Clutch,harmonic weight balance on drive shaft in front of the diff AND a new drive shaft,not to mention a fused pilot bearing on the input shaft. Too many Dragon, Snake,and Kamikaze runs I guess. Yes,I am hard on my car and drive her at 11/10ths on those rides.
Last edited by Thumper13; 03-21-2013 at 09:26 AM.
^^^good info thx! Now to call Esteban if tire balance doesn't work
1990 NA Base Bass Boat Black no AC/PS/Radio, TRM C1s 15x7.5 with 205/50-15 RE-11s, ES bushings diff/CAs, V8 ball joints, Plastidipped OEM Hardtop, HDHCHTDD, XSPower header, Enthuza hifo cat with racer CB, ART modded AFM, Spin-induc intake/K&N, revalved Hard-S Bilsteins 650f 7"/400r 7", OBX collars/sleeves, RB hollow FSB with blocks, no RSB, Thompson two point front brace and Mazda rear control arm brace, VLSD.
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