Rebuilding and Modifying a $4000 BMW E46 M3 - Part 16

Our BMW E46 M3 receives a Koyorad 48mm core HH-Series Radiator and Koyorad 10-row Drawn Cup Power Steering Cooler using all Vibrant Performance hose and fittings.
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Koyorad 10-row cooler: bit.ly/2NtYN2j
Vibrant Performance Hose & Fittings: bit.ly/2T1eC6A
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[@1dickycat]

The moving time laps was kind of a cool bit. Thumbs up to the editor on this one

[@StaySlyh]

Your production quality & editing are steadily improving, and your content just keeps getting better. We aspire to be like you! Keep up the awesome work!!

[@orangexxxx3140]

The plastic fan doesnt exploded on it's own. It only breaks in to a million pieces when the fan clutch locks up. You guys should replace the fan clutch with spal fan from bimmer world. Great build by the way I am loving the series as bimmer nerd Haha.

[@e46silverbullet62]

Electric fan conversion! No need to play with silly clutches

[@g-mane7497]

Whoever that is editing your videos now needs to be paid more. Love the time lapse and editing. But I love the videos always.

[@ThrottleHouse]

I'm not sure about the M3, but is it possible to use an electric fan? I delete the clutch fan at all costs on my M54 s. They do explode, and kill water pumps.

[@christopho3255]

There are mechanical fan delete kits going to a spall puller but A lot of people have found the electric fan conversion to be less effective at cooling both in traffic and with heavy track use. My M3 just crossed 128,000 miles and I've replaced the fan clutch assembly once.

[@dsturbovq]

100% he needs to remove it and just get the oem electric fan. Especially since he’s drifting it that’s what will make it touch the shroud and what not and explode

[@valdipietro]

@@christopho3255 You are right. The electric fans cannot move as much air as the stock clutch fan fully locked up. But that much air flow is not necessary and a SPAL is much less dangerous.

[@freemanoid321]

@@christopho3255 AFAIK at high speed (track usage) fan doesn't help at all so it doesn't matter whether you have clutch fan or electric one.

[@freemanoid321]

@@valdipietro are you sure about that? I guess mishimoto states that their electric fan at least not worse than stock clutch fan www.mishimoto.eu/bmw-e46-m3-performance-aluminium-fan-shroud-kit-01-06.html

[@speeeding]

I hope you guys have better luck with the Koyorad than I did. I did a complete cooling overhaul with one, and at the track, the temp needle always creeped up to the red by the middle of the day. The problem went away once I switched back to OEM. Most M3 folks say to either stay stock or go Zionsville.

[@lancelaprarie6128]

Great fucking video. One of the best. Love this series for the variety. Not same old stuff.

[@tonyconrad9135]

Clutch fan blade replacement is definitely worth it. Mine blew to pieces. You can also just completely delete it. I drive my M3 in 100°F California weather with no fan clutch at all and I have yet to had a bit of cooling problems.

[@ren930]

The stock oil cooler is not efficient enough for a track car. It keeps it cool with street use, but s54s make a lot of heat. I use a csf cooler which takes longer to warm up but is necessary for heavy track use

[@richardcampbell8685]

I agree. I always went with something more efficient on any of my drift cars. Going sideways reduces air flow.

[@gm5383]

Longer to warm up equates to more engine wear. You're better off running a thermostatic oil plate so oil is only sent to the cooler when it's needed.

[@freedom875cc]

@@gm5383 the e46 m3 runs an oil thermostat as standard.

[@AbTekpro]

Do you recommend the CSF oil cooler on a street driven e46 m3?

[@jerizzome]

I can vouch for the exploding fan. I had an E36 323is and was revving the engine at a stop. All of a sudden BOOM! and it sounded like glass shards were sprinkling down under the hood. Hood had extra lumps from the fan bits, hood lining was shredded above where the fan was, and I had to replace the radiator and some other bits. I cried for my wallet that day.

[@jimmehvideos]

Wow, props for changing out those mounts. I hate that feeling of having to tear everything down after you've just built it. Well done!

[@gme0ver24]

Those yellow hoses looks neat!

[@chrisjohnson7264]

I’m from the 330 crowd as well, and having an electric fan is amazing. Just drop it in and plug it in and call it a day, makes servicing belts/pulleys/tensioners much easier. Have never had a problem with my oem electric fan, and I’m at 145k. It even survived a violent serpentine belt/pulley explosion

[@logmegadeth72]

VW/Audi are notorious for using those plastic quick connect coolant fittings as well. I've had a few that leak from there and not the rubber part of the hose, so your silicone hose replacement only really fixed half the problem. But the easiest method is to just very carefully cut the band off you like you did. Just need to make sure you avoid cutting into the plastic fitting. Also doesn't hurt to check the condition of the o-rings inside the fittings as well.

[@jah2mon]

Excellent video I love the cuts between the timelapse from the mock up to fitting the parts.

[@feelthatfeelthat]

Just ordered a set of Samco hoses based on this video. I already have a Mishimoto rad and needed new hoses!

[@DeltaDubai03]

The yellow hoses look pretty good in the engine bay., surprisingly good actually.

[@JDM_Jeffro]

PT over there droppin' M3 engines like a boss. Great video guys!! 🔥

[@brickder3934]

Definitely enjoying the E46 series! A vince bar install would be cool to see on the channel if you guys choose to reinforce the rear sub-frame.

[@boblast5582]

those plastic bits at the ends of the rad hoses aren't meant to be separated from the rubber part. when you buy an oem replacement radiator hose, it comes with that plastic bit attached. even if you manage to take it off without breaking it, it'll either leak or break when you put the new one on.

[@ghostmcarthur9315]

I've never had an issue with my fan but I absolutely, definitely, 100% would have fitted a new fan clutch!!

[@briantristan5634]

They do break and they take everything with it

[@rezenclowd3]

Install a PWM fan controller from Derale to lessen the AMP draw on startup. If this is for drifting, you may want to contact SPAL about the higher CFM fans to make sure you wiring is up to par, some are meant only for 30min of run time.

[@pFbSpecV]

Bmw is almost ready to do some skids!!

[@pablogagne488]

Yellow hoses look sick !

[@MrSpaz12]

I live in Las Vegas and the summer time heat here is insane, but... I don't run the mechanical fan. This last summer was the first time attempting this and I was very skeptical when other people said that they were doing it. Well, I'm here to tell you that anything below 110f I could run the car with the a/c on full blast. Over 110 and I would need to turn off the a/c if I was getting on it or going up hills. I will be putting an electric fan in place of the mechanical this year as the condensor fan works pretty hard and if it fails... My point is that you should ditch the mechanical fan because if the bearings in the water pump start to go then that pretty new blade you put on the car can cause all sorts of sorrow. I've even saw pictures of destroyed hoods.

[@frankadank96]

I have an e53 x5 and a e36 m3 I removed both the fans. Neither have over heated in the summer at idol. Just keep your auxiliary fan!

[@sup3rd]

Yes, it’s definitely worth replace BOTH the fan and fan clutch to prevent it from grenading. You can google “fan clutch grenade” for kicks

[@tnisc]

That's just about the only way to get those metal clamps off! I used a similar tool to cut the clamps when reusing the OEM fittings for relocating my coolant tank to the ABS bin.

[@vmoutsop]

Yes, the plastic fan blades will brake and cause damage but don't just change the plastic, the breaking is usually caused by the clutch locking up when it goes bad and the fan starts spinning at engine speed and that is what causes the fan blades to break. Honestly, you should go with the electric replacement, it really is a better solution.

[@rsebaf]

I've had a fan disintegrate on a e39, due to bad fan bearing. Started wobbling and hit something resulting in fan parts all over, luckily it didn't damage anything. This was the OEM part at about 130k km

[@supercarmio]

Always excited to watch another s.a video! keep it up fellas!

[@jacquesgold]

Great work, as usual!

[@LLSniper]

I like the yellow hose

[@kiloohm]

Add an electric fan, and wire the fan relay to the aux fan (AC fan) brown wire. Aux fan has the correct mapping for on off. Been running mine in my e46 M3 for 3 years from 110f to 0f ambient, no problems. There is a large thread over at e46fanatics if I remember.

[@rmandingo357]

Love the videos. You guys do a great job!

[@alpineskiman]

Y’all are definitely going to need an oil cooler. Even up there in Canada you’ll see high oil temps pretty quickly during track use

[@naylor077]

Was a BMW Tech for six years, absloutely replace the fan clutch and blades or switch to an electric fan. The failure point on the cooling system hoses is on the plastic connectors 95% or the time. I doubt those are the original set from new as they used to fail in the warranty period, those are a must to replace too.

[@stephencocke66]

Good luck getting the air out of that with the fittings facing down

[@Biwaqu]

Look at Pete assuming the gender of the fittings :D

[@glennvandenberg3912]

Haha bravo

[@damajinvegeta]

Always replace the plastic fan as preventative maintenance. Had mine break apart and punctured the radiator, and put a dent in the hood.

[@friguy4444]

Why not Electric fan? Conversion is simple stops parasitic power loss as fan spins and drags so adds HP. (Proven on engine Masters). Minimum new fan clutch. I have an E46 M3 (Love it Sooo much!) from my years of DIY repairs and scanning, reading the internet, the fan problem was not with these years or models but as with all parts and man made things there are a couple of instances where it's happened. But people (Like myself) live in different climates (Alberta) where high speed moving plastics over time get more fatigued then if it spent it's years and KM's in the states etc. So with your mileage and what you plan to do with it you probably bought a worry killer and did the right thing. (Just get those plates in the rear subframe zone LOL) Thanks for the great content.

[@JVR_Funwithdesign]

The fans tend to explode when the fan clutches seize or a tensioner seizes. The old e34 (especially the 540i for some reason) cooling system was prone to this and the fan will even dent the hood from the impact.

[@hechtspeed]

Awesome work guys! But please tell me you have a plan for those rusty ass brake calipers hahaa

[@tuurbow]

keeping the stock fan : *facepalm* keeping ac in a *convertible* driftcar : *double faceplam*

[@graffiticatdog]

tuurbow mind you this channel is hosted by a guy nick named “DP”

[@partypat2528]

It's a streetable drift car. Why would you remove the air conditioning? BUT MUH HURSPOWERS 🙄

[@BeeBeefy]

Alot of times clutch fan is better. Like the JZs and RBs

[@ghettoflyer]

Mystery man #1 on a shop tour @ 7:08.

[@ghettoflyer]

You Guys have SHOP TOURS!?! (Good Idea to make some extra cash!)

[@wedgoku]

I would replace it with a metal version, superspeedersrob had the factory OEM plastic clutch fan blade explode on his red BMW Z3 roaster it took out everything!

[@TheSandman121212]

You dont need to replace the fan blades, you need to replace the fan 'clutch' itself. It not working properly is what causes the blades to break.

[@Injen1us]

"8 second video of him showing us his hoses... thanks bro"

[@JDM_DAISUKI]

This ep is rad!!!! Aka cool

[@mondomoleno.3404]

I'm not ta BMW guy, but I'd say replacing any old plastic that you can is a good idea. As it gets heat cycled, it will get frail, it could lose it's original shape, it gets brittle in winter, and could fail. Peace of mind, IMO.

[@350Z247]

I did an electric fan conversion on my E39 540i and love it. DIY video on my channel.

[@The_True_]

Disclaimer: Not literally bullet proof, don't shoot at it! Koyorad will not be responsible for bullet holes! 😂 Very cool video guys, and nice that you gave your 'biggest fan' such a long cameo with PT! Dave mocking Pete's dirty hose: true friends tell hard truths. ✌😂

[@LuxKeiwoker]

7:10 random hobo with a can of beer in the background

[@RobertKohut]

Nice!!

[@limitedblkwrx]

The fan clutch is what usually fails and cause the plastic fan to explode. I would do the fan clutch.

[@nicksutcliffe4395]

Can’t wait to see the subframe, will you go for a 410 diff gear ratio

[@nickgehr6916]

Cool rad cool car happy engine

[@traviseekhout6586]

I have a e46 m3 coupe and yea it is worth while to change the clutch fan blade also would have changed the viscas

[@andyfreeman4054]

For the clutch fan, the clutch itself can seize. The bus noise and constant running is the symptom. It's smart you replaced the blades. I would replace the clutch as well. Electric works and adds exponential horsepower but are you willing to spend that money? The clutch fan works great though, for horsepower reason, electric will stop a little parasitic loss.

[@kwstaszlatkou1serres]

You can coat your silicon hoses with vynil or leather polisher, they will stay clean and healthy for longer. Just dont overdo it...

[@PANTYEATR1]

i have a question on that power steering...what's the burst rating on the fittings and the hoses? i would think you'd need steel fittings instead of aluminum ones...thanks

[@pprotory]

Yeah I know you are sponsored by koyorad but I can't say it would be my first or fifth choice.

[@jonathanmoga5188]

Wait, you used the old plastic elbows? Did you replace the water pump?

[@franksam8610]

so the here is my issue, I have read forums saying the oem unit is best compared to most aftermarket.. and I’ve also asked a company that does a supercharger what to go with... and they recommend a new oem unit..😳

[@zerotohero7449]

Yes the clutch fans have been known to fail and take out radiators, water pumps etc. You would have been better going to an electric fan, which is a very common mod on the e46.

[@mustafasalemi3334]

Power steering cooler? M3 is setup from factory to do alittle tracking I wouldn't think it would need one. So many coolers in that area.

[@therealboofighter]

Thanks for the good content. I see a lot of channels sponsored by Mishimoto and you guys are working with Koyorad. I was wondering if there was a test you could do to compare the two and see if one cools better or is a better rad? What makes one better then the other and price point sort of thing? Just an idea.

[@fitnesspoint2006]

Neither actually manufacture the radiators they are outsourced in china and then they spray paint their logos to the front.

[@thunderbirdizations]

7:15 #YellowHoseLife bro 😭 I’m dead

[@LLSniper]

Such blatant puns

[@fox10169]

I've seen countless BMW fans explode and take out the rad

[@chrisjohnson7264]

I’d also imagine the electric fan is more efficient, and has less parasitic loss than the clutched fan, but I don’t have any numbers to back that up.

[@angry.8]

Please do some diy stuff for the e92 m3.

[@xspeed996]

Why didn't you change the oil radiator? Doesn't look really young.

[@junkieshere]

Can always fly moog over to help taste.

[@65mustangmotorsports77]

new radiator fore beter cooling, and then mounting te old accondensor in front of it ? replace the accondensor so you get beter airflow to the radiator.

[@freemanoid321]

At first you upgraded engine cooling system and then you reduced airflow by installing steering cooler. What's the point?

[@jedimastersteven]

Should have gotten a yellow intake boot too lol

[@goclunker]

What do you think of csfracing rads?

[@hallantawan21]

What’s up guys

[@funkmasterjay]

I thought only the automatic transmission E46 had clutch fans. All my manuals had electric fans.

[@fshalor738]

2000 323i we have started with clutch fan. Owner upgraded it to an electric fan since she used it briefly for some track/training days. Eletric fans were way cheaper than replacing the carnage and saved us on some hot days in DD>

[@Moezer]

I'm a bit confused didnt all e46 m3 come with the carbonfiber front bumper and that one on the car is aluminum?

[@animefreak3939]

Replace with an electric fan. My 330ci's fan clutch died on me while driving on the highway to work. I don't have a phone so I continued to drive since the air moving kept it cool. But it was hot enough to spin a bearing and crack the head. Don't be cheap... Buy an electric fan or you'll be rebuilding the entire engine.

[@samjohns513]

re using 300k km plastic hose ends🤦🏻‍♂️ that's where the plastic and oring always fails lol

[@murfenator82]

Start the engine already!!!

[@maxime_vhw]

Wait they place the rad between the high pressure line?

[@vmoutsop]

You might regret not changing the oil cooler now

[@BenFreedmanRacing]

SPAL electric fan is the way to go

[@PANTYEATR1]

oh and if you convert to electric fans... autocoolguy.com has sweet fan controllers. i personally use one and it's great

[@qotsa1]

Rock koyorad in my spec b.

[@jeppenordfosskristensen7319]

How are you gonna bleed that cooler ?

[@maxime_vhw]

Might be a self bleeding loop. (idk, just guessing)

[@kevindelacoudray7272]

One of my fan blades broke off and went thru the expansion tank and another went put a dent in my hood on my E39 540

[@Linoge279]

its better to replace both the clutch and the fan with new one since its already done 300k km

[@boxpimp]

Ps cooler? How about trani or oil

[@Finnspin_unicycles]

No transmission cooler is needed on a manual. Oil cooler would be a good idea probably.

[@feelthatfeelthat]

@@Finnspin_unicycles already has an oil cooler from the factory

[@SuperSilvi1990]

Is there a system to get the temperature into the rad vs the temperature out? My car has some work done to it and after a few runs it smells hot but the temp gauge never goes over half way.

[@ViperKillerWannabe]

If you're looking at the stock temp gage that will never go past half unless it's overheating.

[@SuperSilvi1990]

@@ViperKillerWannabe yeah the gauge has a secret menu where you can see the temp in numbers but I want to get something better.

[@lb9gta307]

@@SuperSilvi1990 for driving or just sitting at idle. Because you can just use an infrared thermometer to measure the temp of each rad hose if it's just sitting and idleing. Otherwise you can put in-line temp sensors befor and after the rad.

[@jandeman198]

dont forget to screw on your fan clutch :)

[@IntegraDIY]

Upgrade to electric fans! Why deal with a power robbing clutch fan

[@lukeroonie]

Am I the only one who was waiting for someone to fire a rifle at that radiator?

[@jdalzell3354]

Koyo is too rich for my blood lol.

[@fitnesspoint2006]

Reusing 300,000 km plastic hose joints, the likely area to crack and faile bcus they are so old. Triple face palm.