BMW Z3 - E36 - Drive Train clunking and diagnoses

Автокөліктер мен көлік құралдары

In this video we look at all the possible area's on the E36 / Z3 Drive Train that can cause clunking when shifting gears. We test and finally make the conclusion on the test car.

Пікірлер: 133

  • @DonBMW
    @DonBMW2 жыл бұрын

    This guy is like the BMW Z3 whisperer. I have an E36 and have learned so much from this channel. Thank you for sharing your knowledge with the world!

  • @D3Sshooter

    @D3Sshooter

    2 жыл бұрын

    Thanks for watching!

  • @richardredcastle7911
    @richardredcastle79113 жыл бұрын

    I find all your videos very interesting and educational. Thank you for making the effort to produce them.

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Thanks for the comments Richard

  • @shaneblacklord3313
    @shaneblacklord33133 жыл бұрын

    Love your videos, you always explain everything so clearly and precisely. Very informative and easy to follow. You explain all the possible problems and how to address them. Please keep up the great work!

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Thanks for the comments

  • @neilwilson4936
    @neilwilson49362 жыл бұрын

    Really enjoyed your video, the clunk from the drive train on my Z3 is very annoying on an otherwise lovely car!

  • @IceBear916
    @IceBear9167 ай бұрын

    This was an extremely halpful and well made video, it gave me alot of insite on my problem. Thank you very much!

  • @gordonstenson2708
    @gordonstenson270811 ай бұрын

    Enjoyed this video and presentation. I can now deal with my own car with this added information.

  • @hansvanleersum8309
    @hansvanleersum83093 жыл бұрын

    Fantastic video,loud and clear! Hans van leersum.

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Glad you enjoyed it

  • @jean-jaquesrousseau4712
    @jean-jaquesrousseau4712 Жыл бұрын

    Very well explained and comprehensive video. Thank you for this demonstration!

  • @rallyetjitte
    @rallyetjitte3 жыл бұрын

    Great video! Very well explained. I own exactly the same car. Beware when you order parts for the diff. The diff is not an open diff on a Z3 coupe. It has a 25%torsen diff. The direction of the wheel counter and clockwise will look like an open diff. But have a 25% lsd under the load from the driveshaft. Play inside the dual mass flywheel is also a common clunking issue.

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Thanks for the comments. Indeed that is correct. Its a LSD. I get a reconditioned unit from hardeman sports oarts in two weeks. I will make a video on it soon.

  • @danman7484
    @danman74842 жыл бұрын

    Thank you for making this Video! Bless you!

  • @junbox618
    @junbox6182 жыл бұрын

    Great lighting and greater info!

  • @MrWitchTube
    @MrWitchTube Жыл бұрын

    Thank you, extremely informative, thank you for your contribution to my knowledge of all things mechanical :)

  • @oswaldomendez6790
    @oswaldomendez67909 ай бұрын

    Great video!!!! Thank you for sharing uour knowledge 🙏

  • @hugoalfa75
    @hugoalfa753 жыл бұрын

    Excellent video. Great to see how you systematically rule out different sources to the problem. People new to mechanical engineering can learn a lot!

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Thanks for the comments

  • @N54power784
    @N54power7843 жыл бұрын

    thanks for your video! very helpfull. Wait to see more in a future video.

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    More to come!

  • @Scott-sb1xi
    @Scott-sb1xi4 ай бұрын

    I see your STP shirt, when i was a kid in the US an STP sticker on your minibike, go-cart, bicycle, etc meant you were the man.😊

  • @dauletramazanov4745
    @dauletramazanov4745 Жыл бұрын

    Awesome video 👍hello from Kazakhstan 🇰🇿 love my z3 😍👍

  • @D3Sshooter

    @D3Sshooter

    Жыл бұрын

    Thanks for watching!

  • @terryszabo8884
    @terryszabo88847 ай бұрын

    Thanks for sharing this knowledge!! Helped me out a 1000%!!!!!

  • @D3Sshooter

    @D3Sshooter

    7 ай бұрын

    happy to do so

  • @georgeborcean8564
    @georgeborcean8564 Жыл бұрын

    it is a CV axle . I used a piece wood between my year and suspect area to amplify the sound to determine. Love your analyses.

  • @lee4023
    @lee40233 жыл бұрын

    Good video this, very common on the Z3's here in the UK we always find its the diff but can be two causes, Main cause is the preload in the crush sleeve and secondly play in the LSD unit itself.

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Thanks for the comments Lee, Indeed... I decided to get a reconditioned unit from Hardeman with a LSD

  • @lee4023

    @lee4023

    3 жыл бұрын

    @@D3Sshooter next you should open up your old diff. Can be done with basic tools.

  • @bishamsingh4023
    @bishamsingh40232 жыл бұрын

    Thank you! This was a great video - high quality production (are you a film professional?) and useful information.

  • @ianyoung5116
    @ianyoung5116 Жыл бұрын

    I enjoyed this and I don't even have a BMW. Might look to change that, despite the possible clunking

  • @michaelrocha1570
    @michaelrocha1570 Жыл бұрын

    Very good explanation

  • @angeldealuminio
    @angeldealuminioАй бұрын

    Very helpful thank you so much!

  • @graphictransformations7021
    @graphictransformations7021 Жыл бұрын

    Great video

  • @D3Sshooter

    @D3Sshooter

    Жыл бұрын

    Thank you

  • @corygene6477
    @corygene6477 Жыл бұрын

    Great video! Thank you!!

  • @D3Sshooter

    @D3Sshooter

    Жыл бұрын

    Thank you

  • @tedohio3038
    @tedohio30383 жыл бұрын

    Will be getting our new Z4 soon, it was made on June 20. Like this series.

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Good choice and good luck

  • @themarinerkommer4371
    @themarinerkommer43713 жыл бұрын

    id say its backlash in the differential, older landrovers had that, id say there is some wear in bearings or the diff has not had enough preload put on it when assembled.

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Yes indeed , that is the issue and the part that will be replaced. I had the same on my defender but there it was the half shafts

  • @josepeixoto3715

    @josepeixoto3715

    3 жыл бұрын

    @@D3Sshooter edit: i hadn't realized that was an E36,a few years old... time to check the diff gear oil on mine (1995 318 tds, diesel...) lol Nice video; what a shame, hadn't seen bad diffs in decades!! my 1992 (Opel) Monterey ,Isuzu trooper 3.1 TD with 300000 kms has the diff,engine,gearboxes,A/C(never a leak!!!) etc like new; the posi rear works like in the day it was born,never a repair except the P/S pump last year; even the Alternator still has the original brushes and copper rings...amazing --but i know they will need to be replaced soon lol

  • @fatkhannour2595
    @fatkhannour25952 жыл бұрын

    Love this video.. i have same problem like that.. but with another abnormal sound when shifting to gear pos 1 or R.. but no abnormal sound when the car move..

  • @D3Sshooter

    @D3Sshooter

    2 жыл бұрын

    Thanks for the comments

  • @beigemanalishi1645
    @beigemanalishi16452 жыл бұрын

    The limited slip differential check only works on early non ASC cars with the 25% 'plate' LSD. From 1998 the 2.8 and later the 3.0 used a TorSen (torque sensing) LSD that does not lock up like a plate LSD. Without torque applied it just behaves like an open diff.

  • @D3Sshooter

    @D3Sshooter

    2 жыл бұрын

    Sorry for the late reply , as i was away for work. But thanks for the comments.

  • @e9999qwe
    @e9999qwe3 жыл бұрын

    Interesting to see under there. Nice video. I can relate since my trucks make similar clunks. Did not know the Z3 came in coupe style as well, I only saw the roadster locally. One comment is that I have been extremely pleased with using a mechanic's stethoscope when trying to find noises. It's really uncanny how much that amplifies things, I can easily pinpoint which cylinder makes the odd noise etc. Very effective, and a chinese one is only $10/e or so. For pros they have radio-operated microphones you can stick with magnets under the car for test drives, but that is probably generally overkill for us peons. You might want to see if you can fix any excess diff backlash yourself, it's sometimes not as difficult as it may seem at first. Good luck with the fix!

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Thanks for the comments and write-up. Very good tips on the magnetic microphones. I do have a stethoscope , maybe I should have used it...

  • @pasoglorioso

    @pasoglorioso

    Жыл бұрын

    Hi, Mr , i don't know your name, please to see your videos, are wonderfull, I lived in woluwe Saint Lambert,now in Colombia, My Z3 has noise in the diferential like a buzzing that begins at 50 kms and harder with the higher speed, unconfortable noise. I did revision and retight all the bults ,change the lub for

  • @pasoglorioso

    @pasoglorioso

    Жыл бұрын

    The original liqui molly 75 w 140 with any success

  • @pasoglorioso

    @pasoglorioso

    Жыл бұрын

    Dime mecs Say that si the Crank and the crown , what can I do?

  • @jeffmcadam9071
    @jeffmcadam90714 ай бұрын

    This may sound silly, but this is where a towel comes in handy. When trying to chase down a sound, Wrap and pack the towel around the item you are checking. If the sound is the same, then it's not that part (as the towel would dampen the sound a bit). If the sound changes however, you have either found the problem, or it's connected very closely. If it was the diff for example, wrap the towel around the diff and re-test. The sound from inside the diff would travel to the casing which would then be dampened. Genuinely, sounded stupid as hell when my old friend recommended it 20 years ago but it has not served me wrong since - although the towel is now filthy.

  • @stevecallachor
    @stevecallachor2 жыл бұрын

    I had a 1929 Oldsmobile which had flexible driving discs like these. It was a beast of a car, they lasted about 9 months before they needed replacement, not a difficult job though because the poor boards cold be quickly removed to gain access. Have we come very far in 90 years??? Stavros

  • @D3Sshooter

    @D3Sshooter

    2 жыл бұрын

    Thanks for the comments,

  • @General813
    @General8133 жыл бұрын

    We always change the "lifetime oil". Unfortunately they left out the drain plug on the differential on this model. Sucking off is better than leaving the old one in. And we even completely change the servo oil and the atf container with a filter inside. The "lifetime oil" in the servo must also be removed and then everything lasts forever. Lifetime is not 4ever only 6-8 years approx. Nice video with the test method Steve BR Olaf

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Thanks for the comments Steve, I agree "life Time" is certainly nit 22 years. What oil do you use ? Red Tulip ? It seems that mine has a drain and fill plug.. Have not looked very close, but it seems like its two hex inbus bolds

  • @General813

    @General813

    3 жыл бұрын

    @@D3Sshooter Hi Steve, for the diff we use Rowe HIGHTEC TOPGEAR SAE 75W-90 S. For the engine Valvoline 0W-40 SynPower and for the gearbox and the servo Castrol Transmax-Z. The drain plug is a magnetic screw from "gold plug usa" and the engine oil drain plug also. The screws are great and you wonder what is being fished out with. For the gearbox we use a bmw genuine drain plug it`s with magnet it´s conical. I hope it´s the right part number M24X1,5 23 11 7 546 876 Greetings Olaf

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    @@General813 Thanks a lot Olaf....

  • @lucianoa787
    @lucianoa7873 жыл бұрын

    Great Z3 videos! Let us know how you continue to fix the diff! I own a Z3 Coupe 3.0i Regards

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Thanks for the comments, i sure will. Next up is the replacement of the diff with a LSD type and new bushes

  • @williamclemmons8710
    @williamclemmons871011 ай бұрын

    Thanks for another great vid! So I have a 2001 325i and I replaced the center support bearing and now I'm getting a violent vibration at 28 and 58 mph. Thoughts? I'm thinking u-joints but wanna be sure prior to removing again. I'm working off my gravel driveway.

  • @simonjones5614

    @simonjones5614

    8 ай бұрын

    When you separated the prop shaft, did you mark it and put it back on the same spline position? The two halves of the prop shaft are usually balanced as one assembly. If you change the orientation you will put it out of balance. BMW marks them with white dots that you may still be able to see.

  • @PompeyMatt17
    @PompeyMatt172 жыл бұрын

    great video Steve...with the diff itself, would it sound that metallic? as it would be full of diff oil..worn driveshaft?

  • @D3Sshooter

    @D3Sshooter

    2 жыл бұрын

    Thanks for the comments, it turned out that even the oil level was low and the torsen LSD was worn

  • @NEWAGenTChannel
    @NEWAGenTChannel2 жыл бұрын

    Thank YOU!

  • @D3Sshooter

    @D3Sshooter

    2 жыл бұрын

    Thanks for the comments

  • @paulharryyanez1
    @paulharryyanez1 Жыл бұрын

    Nice job to detect the noice

  • @Neumannen
    @Neumannen2 жыл бұрын

    My 2003 E36 218i touring has a violent shake when I take off and on hard accelerations, I think it might be the center bearing becaus I can see the front rubber thing and it looks alright. ideas?

  • @uldisemsins4810
    @uldisemsins48103 жыл бұрын

    Thanks for both Z3 videos. Many years ago I want buy one like this. 2.8 coupe. Then price was about 5000eiro Try burnout. I can bet differential satellite shaft will broke and it broke differential housing.

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Thanks for the comments

  • @Mr_Bones.
    @Mr_Bones.2 жыл бұрын

    This is high quality and very educational. I’m having issues with my driveshaft u-joints. Can they be rebuilt?

  • @D3Sshooter

    @D3Sshooter

    2 жыл бұрын

    Yes you can

  • @Wishnuful

    @Wishnuful

    2 жыл бұрын

    @@D3Sshooter Thanks for the nice video with clear explanation. Would you please explain how to re-build the U-joint! My rear U-jiont has a play and need to be re-build. But it looks like non-re-buildable. Much oblige if you lead me the way.

  • @glenglene8473
    @glenglene8473 Жыл бұрын

    why dont you remove the driveshaft from the differential in the first place?

  • @jbornelas56
    @jbornelas5611 ай бұрын

    Bom trabalho

  • @work4fit187
    @work4fit1879 ай бұрын

    I get shutter noise when turning off with trootle comes from the rear more likely left side could he axle bushes as there split ?

  • @bauerjack1978
    @bauerjack19785 ай бұрын

    I have problems had it for years you pull away in first gear and the rear judders loads likes its banging , its very loud. Never found the problem as it only does it now and them,

  • @dabo8524
    @dabo85242 жыл бұрын

    Don't be sure you don't have a limited slip diff. These good old Z3 with 2.8L engines often have Torsen Limited slip differentials. These LSD acts like an open diff without any traction on a wheel but limit lip as soon as there is a minimun traction on one side. Only 1% left is needed. Here you can find an example, even the torsen in the Z3 has a different construction, it's the same effect: kzread.info/dash/bejne/fHmdtbaze5CnYqQ.html I myself have this cllicking for over 245.000 km and it's all fine, and it's all only on these torsen diffs not on open or other LSDs. But I never would swap this ever lasting good old torsens to the modern LSDs which loses there function after 80.000 km or 100.000 km. The clicking is from the worm-wheels unlocking/locking.

  • @D3Sshooter

    @D3Sshooter

    2 жыл бұрын

    Thanks for the comments, I did have one , when checked in the shop later

  • @doriang2220

    @doriang2220

    Жыл бұрын

    @Dabo Hi Dabo I also happen to have this clunking issue. I don't mind it as long as it's not damaging to diff or anything else. My Z3 has 200 000km. Do you think I should replace it to keep the car in good condition or is it totally fine to leave as is ? Planning to change the diff and gearbox (5 SPEED MANUAL) oil. What is the recommended oil ? thank you so much for your feedback.

  • @evanowens2647
    @evanowens26473 жыл бұрын

    I have the exact same issue after following your steps. What parts are you going to replace and where are you getting them? Thanks in advance! This has been driving me nuts!

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Well in my case the diff is the main issue, and one half shaft that has a little bit of play on the inner CV joint. The main driveshaft + flex disc and central bearing turned out to be OK. So, I am replacing the diff with a reconditioned diff. Note that these diff's ( 188) have for the Coupe 2.8 and 3ltr a standard Limited Slip Differential ( 25%) and that is often the weak point... I am getting a reconditioned diffunit from Hardeman sports parts in the Nederlands. Video will follow Good luck with yours....

  • @doriang2220
    @doriang2220 Жыл бұрын

    Hi your videos are amazing. I was wondering, I have the same issue on my z3 but d'ont have the time to work on it at the moment. What are the consequences of keeping driving the car with this problem ? thank you

  • @D3Sshooter

    @D3Sshooter

    Жыл бұрын

    Well that depends on the actual issue... in each case it will get worse over time and might snap things. If the diff rubber is gone , then it can sheer the connections to the chassis. If its the diff itself `internal' , then it will destroy the diff over time .. all that can take a long time... but still its something you don't want to have

  • @doriang2220

    @doriang2220

    Жыл бұрын

    @@D3Sshooter Thank you so much I appreciate it

  • @el_wachoo2468
    @el_wachoo2468 Жыл бұрын

    I have a e46 and im having a cluncking issue too mine sounds like the sound cluncks multiple times (like its bouncing) when releasing the clutch in gear. And it has me crazy

  • @finnax3418

    @finnax3418

    3 ай бұрын

    Either look at the center bearings of the driveshaft or at the bushings holding the diff in place

  • @JamesParus
    @JamesParus3 жыл бұрын

    Differential with a lock would be a nice upgrade

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Yes , indeed... There is a shop in the Nederlands that I am in contact with that provides recondition and LSD differentials

  • @davide3027
    @davide3027 Жыл бұрын

    ma x prima non hai controllato i giunti semiassi ruota ???? se stavano in ordine ??

  • @willbennett7508
    @willbennett75083 жыл бұрын

    are we going to see a sort of series with this car?

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Potentially yes, especially on the maintenance and repairs, bit all the rest goes on as well

  • @alexmiguel9276
    @alexmiguel9276 Жыл бұрын

    Hello, I have the same problem with my 2.8 z3 Roadster. finally, what was the result after repairing the differential? Thank you so much!!

  • @D3Sshooter

    @D3Sshooter

    Жыл бұрын

    At the end it was the torsten slip differential that had to be replaced/rebuild....

  • @tomthompson7400
    @tomthompson74002 жыл бұрын

    all that diagnosis ,,, then just replace the lot . Im glad its your car as I wouldnt like to be explaining that to a customer , 50 here and 60 there , new this etc etc still a good video though.

  • @D3Sshooter

    @D3Sshooter

    2 жыл бұрын

    Thanks for the comments, That is indeed what is done today... replace all of it and hope it fixes the problem. Understandable as the labour cost is high. But as an engineer I still believe in proper analysis... I guess I most be old school

  • @tomthompson7400

    @tomthompson7400

    2 жыл бұрын

    @@D3Sshooter not enough of the old school types left ,, but replace the lots an expensive way ,, didnt you find the actual problem ??

  • @mercbenz
    @mercbenz3 жыл бұрын

    My M-coupe makes like a fibrating clunking sound everytime I press the clutch to change gear... I changed the flex disc but that wasn't it unfortunately. Any ideas? Thank you!

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    I would think a faulty clutch system, pressure plate etc..

  • @mercbenz

    @mercbenz

    3 жыл бұрын

    Thank you for your reply. I doubt it since both clutch and flywheel have been replaced. Also the subframe has been strengthened... my guess is either the driveshaft or the driveshaft support bearing but just thinking out loud... Love the video and thank you again! Enjoy your coupe! :-)

  • @mikakolari3201
    @mikakolari32013 жыл бұрын

    Is the differential the same as in the normal E36? Then it would be easy to upgrade it to an LS differential.

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    This one is the 188 diff with a 3.15 ratio and a standard 25 % LSD.

  • @keronsmith8459
    @keronsmith8459 Жыл бұрын

    I hav e that problem with m3 e46 should I buy a used diff or can it be fix

  • @D3Sshooter

    @D3Sshooter

    Жыл бұрын

    You can get a recon unit, that is what I have done

  • @H0t.5tuff
    @H0t.5tuff7 ай бұрын

    17:20 legend

  • @titofernandezmeirino9832
    @titofernandezmeirino98323 жыл бұрын

    Hi Dave, how many kilometers does have the car?

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Mine has 119000Km , not sure if you were asking me

  • @caprahomestead8449
    @caprahomestead8449 Жыл бұрын

    Hier se een medebelg, ik ben toevaliig op zoek naar een z3 2.8 kom ik dit tegen.

  • @D3Sshooter

    @D3Sshooter

    Жыл бұрын

    aaa jaa, wij zitten overal he..

  • @31acruz
    @31acruz10 ай бұрын

    Once you did all that, did it solve the problem ?

  • @D3Sshooter

    @D3Sshooter

    10 ай бұрын

    I did for me

  • @v1cenzo56
    @v1cenzo563 жыл бұрын

    Hi gent, I know this car perfectly, I own a 3l roadster... Disclamer : this noise is normal : all Z3s make it 😉 Ciao !

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Thanks for the comments, Indeed almost all have that fault . It is as some say the signature of the car. A bit of clunking is OK, some really have am issue with the limited slip diff. Will see when the diff is reconditioned... Good luck with yours

  • @likits1999

    @likits1999

    16 сағат бұрын

    Dang. I dont think I can live with that. My 1.9 Z3 is making that clacking sound when I release the clutch and I feel like something made out of metal is gonna break. U joints and center bearing are excellent and the flex disc is new.

  • @estpst
    @estpst3 жыл бұрын

    We want Rusty!

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    Me too , Thanks for the comments

  • @elmolino2239

    @elmolino2239

    3 жыл бұрын

    Me too, it's been a long wait (but we learned a lot of other stuff in the meantime)

  • @karasni7814
    @karasni7814 Жыл бұрын

    mechanics stethoscope

  • @D3Sshooter

    @D3Sshooter

    Жыл бұрын

    Thanks

  • @sonyhk3824
    @sonyhk38243 жыл бұрын

    First 👍 💯

  • @D3Sshooter

    @D3Sshooter

    3 жыл бұрын

    hahaha, yes indeed .. congrats...

  • @sonyhk3824

    @sonyhk3824

    3 жыл бұрын

    Thanks Steve 👍

  • @johnhetherington8830
    @johnhetherington88303 жыл бұрын

    we can all hear the clunking..fix it for christ's sake

  • @D3Sshooter

    @D3Sshooter

    2 жыл бұрын

    yep , that is what we will do

  • @mikepanos5609
    @mikepanos56092 жыл бұрын

    5n

  • @ivanvazquez1963
    @ivanvazquez196310 ай бұрын

    Seems like a lot of work and crying over a little Clunking sound. How about just drive the car and turn on the raido if the sound bothers you.

  • @robintel7069
    @robintel7069 Жыл бұрын

    absolutely useless!!

  • @D3Sshooter

    @D3Sshooter

    Жыл бұрын

    Your comment ? yes

  • @robintel7069

    @robintel7069

    Жыл бұрын

    @@D3Sshooter you are!

  • @nebojsa1976
    @nebojsa1976 Жыл бұрын

    And here is million dollar question, can driveshaft be replaced without dropping exhaust 100%? Of course, I'm talking about these 4 screws. Would it be possible to unscrew exhaust from the back and then just let it hanging (of course, you'd put some kind of support, so exhaust doesn't fall off to the ground). You could gain enough clearance to replace the drive shaft (maybe 1 feet or 2). The screws on my car, actually those nuts are not recognizable anymore (rust is everywhere). So, I don't want to mess around with that, because I know if I try to unscrew them, it might create bigger problems. So, what do you think, would that be possible (replacing drive shaft without unscrewing these 4 exhaust screws)?

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