My BMW E90 M3 Engine Failed with Brand New Rod Bearings - Good Bye $10,000

[@pete9110]

Bring back the dipstick!

[@turbo_brian]

Analog is teh bestest

[@bgee461]

It makes me sick to see cars without a dipstick and also without temp gauges. SICK!

[@juliusschreck613]

Whoever came up with this bullshit needs to fired immediately!

[@TassieLorenzo]

@@juliusschreck613 That the car is simply not intended by BMW to be owned and driven for 10-20+ years would explain some of the "BS" decisions! As far as BMW are concerned, you are "meant" to be driving the latest model M4 under warranty (with a BMW service package) and keep continually upgrading to the newest model I suspect! I suppose the engineers think the oil level sensor is sufficient to alert the owners to come into the dealership for an oil top-up, in-between the condition based servicing extended oil change intervals...

[@kc550]

​@@juliusschreck613fired? They probably retired years ago...

[@michaelcorey1539]

Seeing M539 being mentioned puts a smile on my face. that guy deserves all the attention

[@jpwilliams5264]

Can we just recognize Pete for being such a trooper!

[@davegt27]

yep

[@TassieLorenzo]

Meanwhile Dave is just chillin' in carefree Toyota and Honda land! 🥲

[@jdmnuggets]

Trooper 😂

[@jpwilliams5264]

@@TassieLorenzo doesnt sound like fun to me! Hondas/Toyotas, wife material BMWs…..hairdresser/stripper/horse rider material;)

[@dewitoosthuizen3130]

4:15 this is unfortunately not true. On the back of the crank you'll find markings indicating different colours for each journal. Each colour indicates a different bearing clearance, it also states so for upper shells and lower shells. The one size fits all packages which you can purchase simply don't meet the extremely finicky nature of these engines. The crank is also scrap as they are only case hardened and grinding it will result in removing the hardening, attempting to reharden it will cause it to bend, runout on these cranks are limited to 0.002mm. If it's out of spec, you will notice accelerated bearing wear imminent failure. I do believe it is possible to repair the crank, bit I do not believe that it is worth the hassle or stress involved in doing so, the ideal fix would now be to replace the crank. Check the main journals in the block for roundness, bearing failure results in pounding of the main bearing saddles which would also cause a premature failure in the near future.

[@romankalyniuk2596]

Finicky is an understatement

[@thegirthquake8574]

This needs to be pinned ASAP-- not out of shame but for the valuable information!

[@gabewilson81]

agreed, in no other engine is rod bearing replacement made to seem like such a mindless install "just toss them in and rip". No, plastigauge is a MINIMUM

[@BHSAHFAD]

This guy S65s

[@ebf1003]

I'm confused. When did KZbin comments get so articulate and well informed? Also, stroker engine.

[@thedonvito7650]

It was the VAC coated bearings, the coating eats into the clearances between the bearings and the crank. Everyone in the E9x M3 community knows the BE Bearings are the gold standard. Build a stroker.

[@SpeCifiC0507]

You have no idea what you're talking about. Never comment again.

[@962RACER]

I have one of these cars and have been running it for over a decade as a daily and have tracked in occasionally as well. I've done endless research about these problems on forums etc for preventative maintenance purposes, and although you will never get an absolute consensus on the boards for even the rod bearings, there is a commonly reported number 1 main bearing failure for the reasons garage 539 mentioned. the crank is very extended past the number 1 bearing and has high leverage on it, so that the dual timing chain setup will cause an exaggerated upwards force on the crank. It's more common to run into the number 1 main bearing failing with supercharged cars, where their power pulley adds additional load (like the timing chains, in the same direction too and at the very tip of the crank with the highest leverage). Also note that when i was looking at main bearings i noticed most specialty tuners like Turner and Bimmer world etc were recommending running the YELLOW (loosest) main bearings for ALL the mains when doing the mains, because like the rod bearings these run too tight a clearance as the oem setup. I did my rod bearings 10k km ago at 172k km and they looked decent, but i was mindful of the number 1 main and decided i'll gamble, seeing how it's pricey at the shop and i don't currently have a place to do it myself. regarding temperatures, these cars also have a lazy thermostat that can show itself at around 85-100k km, but a less discussed one on the boards is the oil thermostat which requires the replacement of the whole filter housing iirc, which can in my experience contribute to the oil being a bit hotter, but i doubt it was oiling related, number 1 main is the most likely culprit.

[@mostlyuselessgarage]

The question nobody's asking is at 20:01 sitting on the shelf you've got a classic Pole Position arcade machine in a box. Come on guys, set that thing up! Great video, and it's inspiring to see you have a big setback and overcome. Well done!

[@Darkslide2AR-FE]

would totally love to watch that unboxing for sure!

[@JAMA1998]

I would go with BE Bearings this second time around, they're a much more reputable company than VAC & individually measure each set before they send it out.

[@max_coast]

As a once Euro enthusiast it's cathartic to see that even the more competent among us are not immune to these piles of crap. Every time I want to get back in the game I watch a video like this, laugh, and I'm safe from a dumb purchase for another few months.

[@timmurrayy]

VAC coated bearings impact the clearances and ARP fasteners at a higher torque impact roundness. Also interesting you had the no.1 main failure mode as well. BE uncoated bearings are the move for the S65 as I’m sure others will support. Good luck with the next one!

[@walterwhite5407]

Is there anything wrong with the CUSTOM ARP bolts sold by BE bearings? On their website (BE bearings) they say their bolts optimized to prevent distortion of the bearings

[@dewitoosthuizen3130]

6:26 I have run into oil starvation on my E92 M3, my car was being run on a Haltech Nexus R5, it happened in low speed switchbacks, I ran my motor on royal purple xpr 10w60, whenever I had oil starvation, the Haltech basically switched the car off to preserve the motor, I had this problem even with VAC's baffle kit installed in the oil pan.

[@saschak6405]

Never run aftermarket hardware (ARP) without checking and correcting clearances - you do that on junk yard motors that are a dime a dozen not an S65. Your M3 went 162000 km with rod bearings that looked fine, remember that. There is ZERO need for ARP hardware anywhere on this engine.

[@walterwhite5407]

Is there anything wrong with the CUSTOM ARP bolts sold by BE bearings? On their website (BE bearings) they say their bolts optimized to prevent distortion of the bearings

[@b3nny90]

I stand by what I said in the previous video. Running arp rod bolts have caused this. You can run thousands of ks with rod bolts no problem or you can run 5ks with them and destroy engines. They make the rod end go out of round slightly. Dry fit your bearings in the rod out of the block and I guarantee they won't be in spec

[@walterwhite5407]

Is there anything wrong with the CUSTOM ARP bolts sold by BE bearings? On their website (BE bearings) they say their bolts optimized to prevent distortion of the bearings

[@b3nny90]

@walterwhite5407 unless you get the rods machined to match you run the risk of distorting the rods when you clamp them as the arp torque settings are higher than oem. The rods tend to oval. The exact same thing happens when you put main studs in an engine without machining the block you will destroy the crank and bearings.

[@POVShotgun]

I love how you didn’t give up or even waste time moping. The engine is still warm and you got the new one in.

[@rocketscienceracing]

that's what happens when you change to aftermarket rod bolts and use different bearings without checking the big end is in round at the new torque load and confirming the correct rod to crankshaft clearances

[@speedacademy]

So every single bearing was undersized somehow then? Thousands of cars all running the same bearings on the same sized crank and somehow I ended up with all undersized bearings?! I just dont think its the logical conclusion

[@vitaliypetruk3872]

This needs to be pinned. @speedacademy, dont forget that you also used a different fastener at a different torque spec. Plain and simple that is the reason for failure. It doesnt matter what thousands of people have done before you. It matters what you didnt do right on your particular engine, as @rocketscienceracing pointed out.

[@mattbeaubien5140]

You used a different rod bolt with different torque. Standard procedure is to resize rods if you change these things, so it's a risk you take by doing this "in frame" approach. A quick search turned up this test but it's something that you could film at an engine rebuilder that has a rod machine with gauge. kzbin.info/www/bejne/bX3ZYZ13eZ6Dqqcsi=wlrdeptrCzkvf3Qv&t=1061@@speedacademy

[@speedacademy]

@@mattbeaubien5140 Your theory is very sound but I have yet to talk to a shop that has ever resized a rod bearing when doing this job. I understand it seems crazy but just call around to the shops that do this job and ask them the procedure.

[@mattbeaubien5140]

Sure, maybe it usually works. But it's easy to see how the rod bearing clearance changes depending on the force that the bolts apply. Using factory bolts and their crazy torque procedure would give the best chance of providing the same clearance (assuming the rods don't start out of round from use). @@speedacademy

[@ClaytonH1975]

Such a bummer guys. Glad To know you’ll rebuild this. Can’t wait until next spring and we get the true showdown!

[@feelthatfeelthat]

Such a bimmer guys. Fixed that for you lol

[@appleorange34]

Great video! Sad to see the engine is toast but I appreciate how meticulous and upbeat. You are even with bad news.

[@feelthatfeelthat]

Why the period after upbeat?????????

[@luisalonsomartinez8360]

A collab with M539 would be awesome 🙏🏻

[@supermanwithheat]

I’m half ways into the video and I haven’t heard any mention of the arp rod bolts that were installed. It is recommended to get the rods re bored/shaped when installing arp rod bolts. It’s very possible all the rods were warped and out of round when the rod bolts were installed causing tolerances to be whacked leading to all the bearing wearing prematurely. It’s mentioned the car was fine for 4K kilometers but it was driven hard like on that track day.

[@speedacademy]

The instructions that ARP provides me tion nothing like that. They simply state what torque spec to go to so while I understand what youre saying, in this case I dont think it applies

[@MineZilla123]

​@speedacademy they might not say it but doesn't mean it can't happen. Every arp fastener install I've seen recommended getting it checked at least if using because any fastener that has increased clamping force could cause it to be out of round, especially on rods. People said they had to resize ka24de stock rods when they put in arp bolts. Worth at least checking with a micrometer for out of roundness

[@cheyne8296]

Whenever replacing rod bearings and hardware, its is a no no not to resize the rods.

[@91Wildcat700]

It genuinely believe the aftermarket bearings were not properly sized. Even if all the factory cranks had the same size journals there are still differences in tolerances that absolutely need to be checked. I beg you when you do the rod bearings on this new engine check each and every one for proper tolerances.

[@calebchang2387]

Just love these investigation videos, awesome work. What a mystery; brutally strange. Glad you got a replacement, sticking around for sure guys

[@neversettle7666]

Not really that strange, or particularly investigative either. Mains and Rod bearing issues are well documented on these motors, it's when not if they will fail.

[@speedacademy]

Please show me the well documented main failures, Im genuinely interested to look at them. I was barely able to find any photos of some let alone tons of cases.

[@neversettle7666]

@@speedacademy try Google, it's literally the first thing which comes up. Secondly go to M539 restorations if you prefer a video format. These figures are becoming more and more common. I think even the most hardened BMW enthusiast can admit there is a decent run of engine bearing failures in BMW's around this era

[@computiNATEor]

@@speedacademy Project Frankfurt, part 3, on M539 Restoration’s KZbin channel.

[@jake-te8gm]

Sreten knows whats up! If I was Pete I would contact Sreten and ask him what he knows- the guy is a walking BMW encyclopedia, and if he didn't know personally, he would know someone who did. @@computiNATEor

[@tylerscott305]

Transfer those throttle bodies to the new engine! "I Do Cars" is another good YT channel for insight into engine failure modes, and he does a ton of work on BMW's too.

[@Skeeter69420]

Watching his video tonight? My Saturday night automotive fix!

[@derekfriday7931]

Other piston mcnuggets fans i see. Its a great Saturday night ritual

[@OriginalRangsta12]

Variable displacement bearings

[@kamils6829]

few years back at the nybmwcca autocross event we had an almost identical failure. Spun a rod bearing. Oil was within range but also 3/4 of the way from the full line. Luckily this was still within warranty and a new engine was installed free of charge.

[@Mikey-jm3dc]

Tip for engine stands. You want the pivot point as close to the valley as possible. Cam centerline on pushrod engines

[@jimboyokel]

Usually on other engines ARP bolts have higher clamping force and require the rod to be resized because it causes the journal to go oval.

[@walterwhite5407]

Is there anything wrong with the CUSTOM ARP bolts sold by BE bearings? On their website (BE bearings) they say their bolts optimized to prevent distortion of the bearings

[@90heroes]

Hope you have time to swap over all the sweet Dinan goodies 🤙

[@amoni1959]

PT was on a mission to find out what went wrong. Love the commitment

[@aMcConghie16]

Best auto channel on KZbin, I still think bmw should hook you up somehow maybe a sponsorship

[@DCPEvo]

Thanks for doing this video. It’s a great reminder that just because we’ve done the bearings everything will be good to go. I does make me question using aftermarket bolts.

[@2ZZGE100]

Wow! The guy does both racing and also does all of the mechanical work on the car as well. Talk about being a proper enthusiast.

[@mickeyward1878]

Introductory Timelapse on pulling the motor, chefs kiss ❤ this channel really it’s the best. Please keep us informed with the issue side of builds this is how we learn people!!!! Be a community dont hate

[@anomamos9095]

There’s always the oil bypass sticking open. Depending on the engine it is either in the pump or the block , it can open at high pressure when the engine is cold stick open and reduce pressure while hot.

[@OriginalRangsta12]

As an S85 owner who tracks their car and have just reached 100k km, this is definitely the motivation I need to get my bearings changed 😅 Love the content as always guys 🙏🏼

[@augustortiz]

The change of bearings was exactly what caused this. A few people have already pointed out the errors he (or the shop) made.

[@mathewtsab]

I’ve had a weird incident like this on a B18C GSR block where I went to replace the pistons with higher compression pistons and in the end I decided to replace the rod bearings with fresh new ACL race rod bearings. Assembled the motor, hit the dyno, made good power, but the motor started sounding a little louder then it use to. I checked the bearings and it had worn badly but not yet spun. Same 10w30 I’ve always been running. My only thing I can think of is, these bearings all have a clearance when all put in new. They all wear together and remain similarly clearances all together. By replacing just the rod bearings, oil might travel to the place of least resistance(main bearings). Like a water hose effect. I’ve built a few motors before this that was my only conclusion and when I saw you doing it, that came into mind right alway. If replacing bearings, do them all or don’t. Now, ARP bolts, big end of rod needs be checked for roundness and reconditioned if running the extra clamping force. It can cause big end of the rod to oval.

[@shaunfogarty5744]

You nailed your problem. Honda, like BMW uses a system of different sized bearings for the mains. Honda used 5 sizes for the mains and 4 on the rods in B series motors. Aftermarket bearings I have seen including ACL are all one size. If you use new bearings you need to resize your rods and/or crank respectively. Honda in the 90s were running tolerances that other OEMs and now running- these really small bearings (the bearings in in this video are stupid small (area or width or diameter) for a 400 hp or whatever the motor was making and are sized for fleet millage and warranty obligations. Not racing while on warranty or racing ever. These BMW luxo barges are not race cars.

[@Shododaan]

At the end of the previous video I was going to suggest a collaboration with Sreten (M539) but decided against it because of the time difference and distance. Thanks for taking the time to show us the post-failure engine.

[@biz1M]

Looks like the #1 main blocled up the oil gallery feed and there it goes on other journals. As long as you put the right amount oil in it and theres no major leaks, no chance of starvation induced by high G. The S65 is rated to 1.4 latG

[@kyletice811]

For LS stuff if you swap rod bolts to ARP you really should check the clearances they just aren’t gonna be the same as factory hardware. That + no checking of bearing clearances at all likely how this happens.

[@slideways2004]

It's definitely the ARP rod bolts. Replacing bearings without measuring is kind of a risk, but using arp bolts will definitely change "roundness" From my personal experience on a stock 2jzgte with upgraded rod bolts, it didnt let go until it was on the dyno at full load.

[@walterwhite5407]

Is there anything wrong with the CUSTOM ARP bolts sold by BE bearings? On their website (BE bearings) they say their bolts optimized to prevent distortion of the bearings

[@epiccheatmealday1180]

The M3 lives on!!! Thanks Pete for being such a trooper and keeping this build alive.

[@38tech]

Budget??? Blown. Whoops. And I agree with the "save the dipstick"!!!

[@jrbuch]

I do really enjoy engine teardowns. Sorry it happened to you guys. I know M cars are designed to be tracked. It's just unfortunate that it spun bearings, while also confirming/repeating what BMWs are well known for. With my 1JZ vvti Soarer (with twin turbos) I've added a 19 row oil cooler, a Koyorad radiator & TRD thermostat. It's been good so far. Keeps it cool and adds extra liter of oil capacity.

[@Paul-ei5rx]

this is extremely common on them, that front main wears even worse if it was supercharged, and the oil feeds the mains first which when trashed will reduce pressure and send metal to the rods next , you got lucky tho if that front main didnt spin at all that block is still good...

[@paulhanusiak4291]

Sorry about your loss. Glad you snagged a nice low mileage S65 already.

[@kwozzie]

I had the rod bearings and main bearing done on my 2010 M3. The main bearing was very worn while the original rod bearings were still OK. My specialist in Sydney Australia has been finding this more and more often as these cars start aging so I recommend to everyone to get the mains done at the same time as the rod bearings.

[@jasonrogers5984]

@kwozzie is that Brintech mate? I have my car booked in with them in Jan to get mains and rods done.

[@kwozzie]

Yep...these guys were awesome. They measure everything to ensure correct fitments. Had the engine mounts done at the same time

[@fengrr]

The oil not being topped off is one thing. You did the VAC motorsports bearings, but while you had the oil pan was off you could have installed their oil baffle, which VAC motorsports says is a MUST for the track. Also, if you check BMW Parts catalog there are two part numbers for the bearings, red or blue shell, upper vs lower. So the lower vs upper could have been installed wrong.

[@speedacademy]

VAC Bearings are all the same so no uppers or lowers. I spoke with them, they recommend the baffle but said its not a must. Plenty of stock pan M3s are alive and ripping tracks so while its a good upgrade certainly not a must.

[@gtolt-yk6uy]

You are the men, Never give up...

[@bean1080]

I have replaced OEM big end bolts on Audi A4 CDNC engines with ARP bolts and found they don't have the same loading as the original as the OEM bolts. I'd imagine when you replaced the BMW bolts with ARP you ended up having a larger clearance, possibly loosing some oil pressure at the big end due to the larger clearance.

[@bean1080]

After watching the rest of the episode I'd say the main bearing failure took the big end out. I would put my money on oil starvation to the bearings. Maybe due to oil no being topped up to maximum. When you replace the big end bearings in the new engine measure the clearance with OEM fasteners and then with ARP if you are going to use them.

[@Booka3141]

@@bean1080 I highly doubt it was an oil level issue. Its on road tyres and low speed corners. The oil level shouldn't need to be at max on any engine just to maintain pickup, the manufacturer will set the levels as required with a safe margin on the low end.

[@bean1080]

Yes i find that's the case with most other engines as there big end bolts aren't that great, but the German's use really good bolts to start with. So when you think you are upgrading to a ARP 2000 you are actually down grading which results in a bigger vertical oil clearance. I was shocked to find this as ARP bolts are normally a huge upgrade.

[@ben2155]

Enjoying this series as I own exactly the same car, also in space grey. One thing to mention is that 90% of the time it's the LCI cars with harder tin coated bearings (2010+) that spin a main bearing. Be very careful what type of rod bearings you install as I have read countless instances of mains being destroyed on lowish mileage LCI cars shortly after a rod bearing job.

[@BHSAHFAD]

It may be worth checking out the main bearing on the new engine

[@kc510]

Expensive bummer. Thanks for the update!

[@Busydadgarage717]

You are indeed very chill about this. Glad you got a new motor already. Make sure to swap the Dynin bits.

[@NotNow293]

I'm not sure if the stock crank pulley has a damper on it, but it looks like your after market one does not. I have seen several cranks fail because the stock crank damper has been removed.

[@warrenduplessis9955]

I stand by what I said on the last video. Oil starvation. Oil supply to the crankshaft and main bearing journals starts at the front and runs through to the back. Makes total sense that the first two bearings are toast as they are the first to run out with oil supply from the starved pump.

[@V12BRO]

M539 (Sreten) is the 🐐!!

[@namelessx2963]

Keep your head up boys! Thanks for sharing the tear down… disheartening for sure but you guys will push thru like you always do! I also agree with some others here to go with BE Bearings instead. This is not the first time I’ve heard or read of VAC installed motors going bad shortly after replacement. Their tolerances are too aggressive in my opinion. Saw that Simoniz 2300 PW in the background, let us know how you like it! Keep up the great work and see you guys soon!

[@zhaoyangxie]

Definitely something wrong with the install, when pushed to the limit, the error will show

[@alexknightwrc]

I’m sad for your loss, obviously. However this is a GREAT video. Detailed tear down and nicely informed.

[@seethruhead7119]

look on the bright side... CONTENT! WE NEED CONTENT! AND THIS IS MORE CONTENT!!!

[@Built_it_by-alex]

Before you start the new engine, remove all the spark plugs and tumble the engine until the oil light goes off, do this many times until you see the oil light goes off as you turn the key, that way the oil pressure is primed up, the reinstall the spark plugs and you're good to go, also get an oil pressure gauge

[@joemaggio6806]

I see you guys like ear protection for the loud power tools. I really love the earasers as a musician, maybe they have something for the power tool frequency’s!

[@halidaymichael2899]

Easy explanation. With low oil, there is enough crank speed that you essentially aerate the oil. You’ve got a windage tray, but when the oil starts to aerate, the pick up and pump both struggle to pump enough good oil. Imagine a garden hose when it’s building pressure. The bearings getting inconsistent oil then makes the problem worse, and then you spin bearings and wipe out crank. Hence needing to over full the oil level a little. That motor is toast; you’ll struggle to clean all the yuck out, plus the crank is wiped.

[@colinkelley7807]

God I’m sorry , Petey. That was a bunch of heartache from such a relatively fresh build, my guy.

[@sullygtx9350]

Is it possible that the Dinan crank pulley is just a pulley and not a harmonic balancer which led to excessive crank vibrations and the wear? It would be a good idea to get a Fluiddamper or other crank pulley that is dampener, even if it's a stock one.

[@brandonismyname4]

That tear down montage at the beginning was awesome.

[@brandon_buildsDIY]

Called it, i knew Pete would have a motor already for it😂 I completely agree with the timing chain theory in this case, also dave has that dad strength 😂

[@AWD_T]

Figuring out the oil path might answer your question

[@QvarnisProduction]

Hate to see that appen to your beautiful m3, but as a veiwer i love to see this kind of Videos. This is what makes me stick to your chanel, so massiv thanks for keeping your content true to life and showing the teardown and rebuild ❤️❤️ keep up the good work

[@ScottGroome]

Take the valve covers off and have a look at the VANOS covers. They're plastic and they get quite brittle over time and can crack off dumping plastic down into the oil pan. I've also got an e92 m3 which I did the rod bearings on, I used ACL bearings and ARP bolts with zero issue. There seems to be a lot of talk from people about how the ARP bolts ABSOLUTELY killed the engine, but I hardly see anyone who tracks their M3 use anything else.

[@elijahfrancis9889]

Rod bearing torquing error. It has happened to alot of us before...different engines too. 4G63T for me. Quite possible to have tolerances for rod bearings violated on a high mileage crankshaft. Bottom end replacement solves immeasurable warps and metal fatigue. Cheapest solution, if not problem will recurr. It was a shop error. Face it.

[@iangray5316]

Standard bolts and bearings, big itbs as you’ve already got them, and top it off with a carbon airbox.

[@chrisokeefe6280]

Great video guys…thanks so much for the deep dive into the S62, one of the truly great motorsports engines!

[@gunner5650]

S65

[@repingers9777]

Motorsports? These bmw engines are good for daily driving for 50,000 miles before they fail, what a joke dude

[@ScottGroome]

@@repingers9777 Yeah that's sort of how motorsport engines work lol.

[@repingers9777]

@@ScottGroome No its not... "motorsport engine" yeah ok the engine in the civic could also classify as the same except they are actually built properly with materials made to last we all know bmw is bad about that stuff its a shame really. Planned obsolescence, its bmws favorite selling point :/

[@repingers9777]

@@ScottGroome That m3 should be able to be beaten on all the time and last to atleast 200k miles before anything major happens but thats rarely the case. maybe some old e36 m3's but yeah

[@piotrek4000]

Could it actually be the ARP bolts? When you do the next bearing job, I would be VERY curious to see the clearances using the ARP bolts vs OEM bolts. I think it's just hard to believe the main bearings (except #1) would be in perfect condition if oil starvation was the culprit. Anyway, good luck and if there's a silver lining, it's that this content is really awesome and I'm here for it, sorry for your misfortune

[@braaap6292]

I smoked a mustang engine due to oil pressure loss. Rod bearings were destroyed but the mains were perfectly fine.

[@rlscustoms]

Craig from DynoTorque in Birmingham swapped an LT4 into his a few years back with great results for the same reason…just saying!!!

[@tvrunn]

The car had 160k km when you bought it and ran perfect. You did the rod bearings and after 4000km the engine blew up. It’s either something to do with installation or a coincidence

[@speedacademy]

It never saw the track before the 160k so tell me the logic in your statement. It likely would have no failed at all if I kept street driving it. If I had tracked it before then maybe youd have a point

[@Win8pc]

@@speedacademyThere have been bearing failures on the street in these engines, tracking it just accelerated the process. Assuming it wouldn’t have happened on the street in an engine that was developed and tested on a racetrack is a large assumption

[@speedacademy]

@@Win8pc You misunderstood, what Im saying is that you are comparing apples to oranges. You cant compare the failure given the conditions were so different

[@hendrahendra]

My engine builder has always told me, its always paramount to use the same bolts that you machine your engine with. So if you are going to use ARP bolts on your build, you give the machine shop your ARP bolts. Dont upgrade to ARP bolts when you dont machine it to match. Oh well, you live and you learn.

[@walterwhite5407]

Is there anything wrong with the CUSTOM ARP bolts sold by BE bearings? On their website (BE bearings) they say their bolts optimized to prevent distortion of the bearings

[@Beaphstake]

This just makes me want to stick to Hondas even more! (Not because of DP's Honda, but personal experience)

[@richardhospodar37]

Awesome video! The problem is with the belt drive and not the chains. You can check out a video from H2 Motors GmbH at around 34 minutes where they build an S65 for JP. They explain it there. And since this engine already had some different pulleys, it could be just adding more to the problem.

[@johnd976]

Put in the new engine and dyno it before adding the Dinan parts. It would be cool to see the real gains from the expensive Dinan parts.

[@fastmacm3668]

Thanks for tearing into it!

[@Javierotb]

I believe Steve Dinan machines the crank on these engines so they can take NASCAR rod and crank bearings. Perhaps worth looking into for the rebuild?

[@MrSoremuscles]

Thanks for doing a deep tear down on this motor! Good info for the s65 community. Looks like main bearing replacement is a requirement for this motor also. 16:31

[@jayryia]

It always amazes me that this channel doesn't have more subs...

[@vmc2216]

I hope you plan to swap all Dinan parts from the blown engine. Awesome stuff and good luck!

[@Crazy8ts]

the wear pattern on those rod bearings suggests ignition timing was over advancing plus the oil looked very black when you drained it, wasn't changed before the track day

[@vincentradziecki7470]

How many Canadians does it take to spin an engine? Ha ha! 🙂 This was a good one. I really like seeing this type of stuff. I also really loved the music in the beginning sequence, where Pete was pulling apart the engine. Keep up the good work! Dave, if you got an Rx-8, you guys wouldn't have to worry about all this rod bearing and crank bearing BS!

[@14KShadow]

Dinan TB! What a hidden gem Hope you swap those throttle bodies over

[@bestcoastgarage5896]

I’ve tracked my car a number of times where the oil wasn’t fully topped off, or the engine oil temp was above the 3rd dot (in 120 desert heat). Those things will not cause a spun bearing. My guess is improper torque procedure during the rod bearing install given all of the bearings were toast.

[@speedacademy]

They go to 50ft-lbs. cant really screw that up. Even if they were off by +\- 10ft-lbs it wouldnt be enough to nuke very single one like that IMO.

[@bestcoastgarage5896]

Yeah that’s fair, it’s very puzzling.

[@omairtheman1]

Hey guys!!! Big fan and sorry about the spun bearings. I’ll take the Dinan Throttle Bodies if you guys want to part them out!

[@domingos123456789]

m539 streten is an absolute legend!! You should do some kind of work together

[@thewyattfletcher]

Bummer, but part of the game we play when tracking a car. BTW, best pull the main caps on the replacement engine too. If it's a thing, expect it to be a thing for you (again). Much easier to do with the engine on a stand now than in the car later.

[@speedacademy]

Its essentially a full teardown to do the mains at which point more stuff to screw up putting back on.

[@pacoflyer]

@@speedacademy Yes you should completely tear down the replacement motor and do top end and bottom end. I could not live with the anxiety not know the maintenance history on that 2nd motor. It's already out so just take it down to the bare block and look at everything and basically drop in a newly rebuilt top to bottom motor. I'd even consider stroking it and do a blueprint and balance P and P the heads. Stock motor is around 371 whp and a stroker kit should be 494 whp.

[@AD-uw6bd]

This was a very cool deep dive into the engine teardown. THANK YOU!

[@hartwalia]

Do both for the next engine pleaseeeeeee, both main and rod bearings!

[@jaybones614]

Always check the the amount oil that comes out of the sump when this happens.

[@jj481012]

This episode reminds me how I would try to rationalize that my terrible ex wasn’t that terrible when we were still together 😅

[@BOROUGHH]

Respect for being a trooper and making this sweet video

[@SixSpeedSeven]

Shoutout papa Sreten. The Broken Bimmer God.

[@feelthatfeelthat]

ARP bolts. Go all oem this time on the new engine and start using 10w60

[@Elmospiece]

Oil pick up tube most likely. That’s what did mine in. 🎉

[@anthonyt.2284]

What is odd to me is the original bearings had very acceptable wear. With no major wear to bearing number 1 But then, when the new bearings were installed, all of them failed. Is it possible that just staying on original bearings wouldn’t have caused the failure? (Fellow e92 m3 owner here)

[@brownah]

About time this cowboy got what was coming to him