Hunting Down The Miata's Biggest Gremlin. [Suggestions Welcome]
Main › Hunting Down The Miata's Biggest Gremlin. [Suggestions Welcome]
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November 9, 2019 at 9:00 am #91799adminKeymaster
So you guys, if this was your car, and you were in my spot, what would your next step be? MUSIC: Joakim Karud – Keep On Going …November 9, 2019 at 9:00 am #91800Federico Hanzlick
2.100 pound tin can 😂
I'm still laughing mate you are the bestNovember 9, 2019 at 9:00 am #91801varnishvarnish
Sounds like K miata are using their customers to do their research and development for them.
That sounds totally unacceptable to me.November 9, 2019 at 9:00 am #91802Bart ten Hoeve
Have you checked the flatness of the trans to engine adapter plate? If there is a misalignment from engine to trans it could cause an internal issue in the gearbox? Just thinking of another possible explanation. Good luck Greg!November 9, 2019 at 9:00 am #91803David Ntervisai
Why do not you just remove everything and put them againNovember 9, 2019 at 9:00 am #91804Jacob Griffin
You could of put in a straight cut gear set for your mx5 at this point. Better yet, it would be cool to design your own gear set via solid works and then brand it, sell it for the fraction on the marketNovember 9, 2019 at 9:00 am #91805zopo_855olive
The struggle is real..
Greg, what engine/ tranny mounts you rock? If you have solid or upgraded poly ones, you will never get rid of vibrations with one piece driveshaft. Maybe with your new idea, two piece one, BUT this is getting too complicated. Maybe some softer poly compound would help, BUT before that I would suggest you ask those guys, who supposedly do not have problems with Kmiata setup, what mounts are they using..
Best of luckNovember 9, 2019 at 9:00 am #91806The Lizard 666
Good luck Greg hope it works out. I think I would have burned the car by now. Nice technical fault findingNovember 9, 2019 at 9:00 am #91807Daniel O
Hang in there man, you got dis! This sucks big-time but you're a hero for seeing it through.
As always, thanks for showing us the full picture and being so transparent. It's why you're the king.November 9, 2019 at 9:00 am #91808garabede1
Greg, serious question. Tabasco, tapitio , or Frank’s red hot?November 9, 2019 at 9:00 am #91809Brandon Stone
would the shortness of the miata driveshaft length exacerbate the CSB to diff pinion angles?November 9, 2019 at 9:00 am #91810DOR CurrField
I don't have any suggestions but I wish you good luck fixing the problem, your new suggestions seem logical and if there is one guy that deserves to drive his Miata on track it's you!!November 9, 2019 at 9:00 am #91811atticus10197
Thank you for this video. Can't wait to hook mine up.November 9, 2019 at 9:00 am #91812Mark Mx5
Damn, where you get your degree in science? Your a mx5 scientist 👨🔬November 9, 2019 at 9:00 am #91813Dylan Lewis
Absolutely beautiful video. We all appreciate the thorough documentation of your troubleshooting process. Whatever solution you arrive at will undoubtedly save people a lot of hassle and money. It blows my mind that this is a one-man operation. I hope I will grow the same level of determination and persistence you have. You really need it to make an awesome car in your driveway.November 9, 2019 at 9:00 am #91814Robert Villafan
first off, you're working so hard on this so i hope you find the solution soon. My suggestions are try changing out the diff ratios to something less aggressive and it also sounds like you may need a torque arm brace. That video you showed about the driveshaft shaking in the dyno looked the drive shaft isn't the problem. the problem is the interaction between your diff and the power coming out the trans. the Driveshaft is just getting messed up and absorbing the load. i say a torque arm brace or beefing up the differential mounts in whatever way. also for the hell of it try changing your transmission mounts to something differentNovember 9, 2019 at 9:00 am #91815a7i20ci7y
Thanks for keeping it real for us. I see a lot of Youtubers who make it look as easy as Auto Mechanic Simulator and when I try to work on my own stuff I feel like a no thumb having chump.November 9, 2019 at 9:00 am #91816Igor Barbaros
Haha, you're not gonna introduce yourself as Miata dad as soon as you encounter a problem you guibo?
On a serious note though, can you take out the driveshaft, and put in gear and start it and run it with a camera under the car. You might be able to see if there's some run-out on the tranny output shaft/flange.November 9, 2019 at 9:00 am #91817poorchansporsche
Greg, @7:37 the adaptor has a tonne of runout. Smells like output shaft bearing(s).November 9, 2019 at 9:00 am #91818Petros Zouroudis
It might be expensive for a customer to do, but maybe it should be wise for Kmiata to do as part of their R&D. Find a beater E46 with the same transmission, try to replace the OEM parts with custom ones like the ones they make for Miatas, see if that makes it unhappy and starts vibrating. Maybe it’s the lack of some OEM parts that make the actual transmission itself produce these vibrations.
(Sorry if you mention something similar here, hadn’t had the time to today’s video, will come back to watch it later)November 9, 2019 at 9:00 am #91819fkdhjfghdsjkghjkfhgkfjd
I bet your rear end isnt centered.November 9, 2019 at 9:00 am #91820rodan9
Hey Greg it's your friendly neighborhood Tapatio supplier here, let me know if you need some more motivation sauce.
I appreciate you posting the video, it's true that a lot of YouTubers don't post the troubles they went through.
+RespectNovember 9, 2019 at 9:00 am #91821LocoRocoNL
Insane amount of research, you deserve a working car! 🙂November 9, 2019 at 9:00 am #91822Wayne Rankin
Greg, I've had a similar problem in multiple vehicles in the past. But one problem you've had before may have become the actual catalyst for your current problems. If I remember correctly you had a warped rear subframe at one point. I cannot remember whether the subframe was in your car when it warped or not. However, should that have been the case, it could have affected the frame rails.
One the other hand, if there were problems with bent or worn rear control arms, bushings, etc. Or it could be the rear coilovers. Have you tried testing them? Also rear alignment. When you changed the rear subframe, which I remember.. vaquely – Forgive me I have had a few drinks tonight – the rear alignment could've been effected.November 9, 2019 at 9:00 am #91823Nils Hummelink
Keep it up man, good luck!November 9, 2019 at 9:00 am #91824bold_strategy99
TheCarPassionChannel Don't bet on a 2 piece driveshaft fixing the problem if it comes to that. It would only mask the real issue. If you still have bad harmonics, and you get a 2 piece, you might not feel those vibrations, but the center support bearing will. Next thing you know, you might break a center support bearing 190 miles from home, with no AC, in August, at 1, only for AAA to tell you a tow will be there in 4 hours, and you only have 100 miles of towing. All because a transmission mount wore out, and the center support bearing absorbed the extra vibration. Ask me how I know…November 9, 2019 at 9:00 am #91825cheeki breeki
LS swap would fix itNovember 9, 2019 at 9:00 am #91826oliolioli2010
Check your balancerNovember 9, 2019 at 9:00 am #91827VZR
Have you considered maybe the output shift off the trans might be Internally bent causing that vibrationNovember 9, 2019 at 9:00 am #91828Castaway__
got to give you props for still going at this for the longest time now, after so much frustration and time consuming research your still going hard. Miata dad is at war with this vibration right now. Hats off to youNovember 9, 2019 at 9:00 am #91829Jérome Gagnon
I hope you will fix that problem by swapping this transmission and doing this driveshaft pattern. I'm a mechanic At international truck and theses drivetrain vibrations are the worst to diagnose… good luckNovember 9, 2019 at 9:00 am #91830Bryce Ramdeo
I think you got it. You had to be on the bmw side to understand. My first one needed a whole driveshaft and diff. Id go to the junkyard and get a e36 coupe or e30 coupe driveshaft and take it to the shop to make a exact copy that is miata like.November 9, 2019 at 9:00 am #91831Ian Masterson
As a BMW e30 owner with many friends that also own e30’s, I would stay away from CA Tuned and their rebuild blue transmissions. There are many other shops in California that rebuild for the spec e30 series. The Getrag 260 is also famous for a “Getrag Rattle” which is caused by the internal lay shaft bearing which should be replaced with a rebuild.
If you end up going ZF, I would make sure to replace the detent pins. There are many stories of people money shifting while using the ZF320. The ZF is a sturdy transmission though and a solid choice.
Good luck and keep going. I see a light at the end of the tunnel for you. Such informational videos for others.November 9, 2019 at 9:00 am #91832Jake Westwood
Have you attempted to put it on on jack stands or a lift and bring the car up to the speed and get under the car and see if anything appears to be vibrating?November 9, 2019 at 9:00 am #91833kZam
Great video, keen to see you get this thang terrorizing the streetsNovember 9, 2019 at 9:00 am #91834Tyler Karon
Since you said you were going to be very active in the comments.. Chocolate Rain. You’re welcome 🙃 lmaoNovember 9, 2019 at 9:00 am #91835Nicholas Wild
1 of said peoples cars hes been in with the problem.
400+ whp BP4W-ZF6-Miata diff
It's pretty annoying having all the power and you can barely use it because it feels like you're a passenger on the challenger space shuttle.November 9, 2019 at 9:00 am #91836Energetic TV
Take drive shaft off.. spin it in gear . If vibration exsist still. Could be engine transmission centering issue… sounds weird but it can be a real thing. Centering a trans and engine can be a very hard thing..November 9, 2019 at 9:00 am #91837Chris P.
Bro… It sounds like you need to get your flywheel balanced…November 9, 2019 at 9:00 am #91838Craig B.
I’ve hit so many hard to figure out barriers and walls with my main project car lately. And then on top of all that, my radiator blew up in my miata (which also has an unknown vibration). Thank you for motivating me to not throw the whole car away.
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