BMW M50B30 Stroker Build Part 1

This is a video about using M54B30 Crankshaft, connecting rods and pistons in an M50B25tu Block. M54B30 ZHP Intake camshaft (246 dur) and S50B30US Exhaust camshaft (240 dur). 0.6mm Shaved off the M50 block for 10.8:1 compression ratio. The chain tensioner takes up slack no problem. Use m52 cylinder head and e36 318is valve springs/upper and lower spring plates, they are the same as S52. The torque specs are as follows:
Main bearing caps : 60ft lbs (reuse bolts)
Connecting rod caps: 40ft lbs (reuse bolts)
Camshaft journals: 15nm
Cylinder headbolts M10: 61ft lbs (new only)
Any questions email me: [e-mail]
Instagram: Iconicarss

[@christianellis3651]

Very informative!! Thanks from South Africa!!

[@Desmodromic916]

Thanks

[@leoh6515]

This video is very helpful thank you, I do have a question could I use a m54b30 crank with s50 b32 con rods with m50 piston on a m50tu block and head? Would it work and would there be interference? Thanks

[@iconicars3050]

No idea, never tried it.

[@abyss7524]

@@iconicars3050 how much horse power does it give?

[@stoyanbotev4871]

M50 bearig 45mm s50 - 49mm. S50 139mm conrod , m50 nv is the highest piston reaching the deck or over. And b30 crank is 89.6 stroke! How the hell you think that gonna work 😂 that means you gonna have few cm over the deck and about 5mm gap between the conrod and crank 😅

[@forgingaerospace5477]

So pretty much to narrow it down ... -M50 Block/Oil Pan -M52 Head/Lifters/Valves -S52/62 Valve Springs/Bottom Seat/Top Plate -M54 Pistons/Rod/Crank -M54 ZHP Intake Cam -S50B30 Exhaust Cam -ARP Head Studs/Bolts -Head gasket (Personally I would go cutring with copper spacer) Am i missing anything?

[@iconicars3050]

No need for that head gasket unless you are boosting the engine.

[@kidkreep]

Are those torque specs for stock rod bolts & main bolts as well?

[@iconicars3050]

Yes for oem bolts

[@nicolaikruse6278]

hey :D i am currently doing the a m50b25NV stroker to 3l with m54b30 internals ?:D just have one Q for you Why dount you use a m52b28 head gasket ?? it is only 0,75mm and is steel ?? :)

[@iconicars3050]

Thats wrong. M52B28 headgasket is 1.75mm and is not steel. 11121726619.

[@mateivornicu8252]

Thanks for the info! So for this setup with 0.6mm skimmed off the block, head skimmed with as little as possible and a 1.75mm headgasket there are no valve clearance issues? Is this setup working well? Any other tweaks with timing? Because of the "shorter" chain length?

[@iconicars3050]

Working well, already put on very hard 10k of track. No issues. Chain slack is minimal.

[@mateivornicu8252]

@@iconicars3050 Thanks for the reply! Do you run higher octane with this compression or the european 95 pump gas is enough for it to run knock-free? I had already skimmed 0.6mm of the block and was thinking of going for the 2.05mm gasket to avoid running 98/99/100 octane..

[@iconicars3050]

@@mateivornicu8252 i run 93 oct(canada). there is no detonation. Compression still too low for deton. 12:1 is border line for pump gas.

[@ethanbhagwandin2684]

Just asking, but why not take 0.7mm of the deck ? Will there be to much slack on the chain with that much taken of ?

[@lukaduner7732]

How did you get rid of that ridge without taking of too much? Just with slight hooning?

[@iconicars3050]

No, honing wont do it. You need a special tool to remove the ridge. “Cylinder ridge reamer”

[@elyassyukri2082]

How do you deal with the CKP sensor since m54’s ckp sensor is near the rear main seal and the crank itself doesn’t have trigger

[@iconicars3050]

You don’t need to use the M54 trigger wheel. You remove that trigger wheel off the crank before installing the crank into your M50 block. You use the M50 front dampener and m50 crank sensor which sits in the front timing cover.

[@iKeepITB]

For the valve springs you got any links

[@iconicars3050]

S52/M54 valve springs. Part out places...

[@TechTokOffical]

Ok so here's my question...well a couple 1.) On any of these stroker jobs(I'll be doing one on a m52tub28 and I own a e36 328 that everything will go into)we all take care of the cam stroke which gives us more space for the boom 💥 in the top of the cylinder,but why isn't the heads ever bored out(esp after the tu when it jumped to 3.2). Isn't ANY additional room for detonation going to lead to more power?why am I not going to bore the head out to use the bigger pistons

[@iconicars3050]

Buy an S52 head, noone will bore out the combustion chamber for you. You only need that if you go 3.2L. (86.5 bore)

[@andygrant8091]

hi i stroke the internal m54 b30 pistons ,connecting rods and crankshaft ? IN AN M52 B28 ENGINE BLOC ? I use a cometic 0.76 head gasket , and camshfts s52 3.2 us .what would be my volumetric ratio? WHAT DO YOU THINK,? MANY THANKS

[@iconicars3050]

No idea

[@jvlst3]

What is the rod ratio gonna be on this stroker engine? I'm thinking about stoke my m52b25 euro spec

[@iconicars3050]

rod ratio is 1.54mm

[@nordinstrijker1369]

Can i pick a thinner head gasket for the same CR as you with the shaved block?

[@iconicars3050]

1.75mm is the thinnest for 84mm bore block. The other one is 2.05mm which is thicker.

[@nordinstrijker1369]

@@iconicars3050 when I look on the internet in Holland I can pick a 1mm headgasket

[@ethanbhagwandin2684]

Hi there. Im currently building the same engine and wanted to find out if i could deck the block to be flush with the piston instead of just going 1 thou I am also using m54b30 crank, rods and pistons

[@iconicars3050]

you can’t deck it that much. Compression will be too high and your chain will be lose, the tensioner can’t pickup that much slack.

[@ethanbhagwandin2684]

@iconicars3050 alright, I see, so 1.6mm it is. If you don't mind me asking. I want to regrind my camshafts to a different specification, but I'm not sure what to grind it to ?

[@iconicars3050]

@@ethanbhagwandin2684 just copy schrick. Duration 264/256. Lift 10.5/10.4.

[@ethanbhagwandin2684]

@iconicars3050 thanks alot for your help

[@ethanbhagwandin2684]

@iconicars3050 hi there, sorry to bother you again. I just spoke to my engineering guy, and he says that I need to machine the cam trays so that the lifters can move further up and also lengthen the valves and he also says that the hydraulic clearancers have to be reset as well. Is this true, or can I just regrind the cam to 264/256 without doing any of that

[@TruBimmer]

I have a non vanos m50 block I’m building right now. I got a NONvanos m50 head because I thought the dual valve springs was better was for high rev 😢. What should I do? Am I able to put the better valve springs on the m50 head?

[@iconicars3050]

I dont know, never tried. I dont like non vanos M50’s so i rarely work with them.

[@TruBimmer]

@@iconicars3050 does vanos even make much a difference when it comes to boosted applications lol. And u can add vanos to a nv block

[@iconicars3050]

@@TruBimmer you can add anything to anything with the right knowledge and unlimited amount of money. I don’t see the benefit of boosting a non vanos head over a vanos head. You have a-lot better cam options for a vanos head and better tuning capabilities, more software and support available. M50nv cams are junk, 240/240 cam option doesn’t work either for spool or degreeing cams to get some midrange. Boost or n/a build you need to run minimum S52 cams.

[@TruBimmer]

@@iconicars3050 okay you can add s52 cams and vanos to a non vanos block too lol. so if you’re gonna do s52 cams regardless what makes a nv m50 so garbage

[@iconicars3050]

@@TruBimmer cams dont mount to the block lol. We aren’t talking about nv block. Talking about NV head being garbage.

[@jurijsjurjevs2976]

Hi mate, but if You use crank from M57tud30 diesel which has 90mm stroke instead of m54 crank 89,6???

[@iconicars3050]

I am in Canada. We don’t have those diesels here

[@jurijsjurjevs2976]

@@iconicars3050 perfect :D im moving there, because i hate diesels! 🤣🤣

[@stawmventer8947]

Hi I’m currently building your set up ,I’m in South Africa with a red label 413 ecu could I buy the tune ?

[@iconicars3050]

I dont have the tune anymore, didnt save it, i already rebuilt it into a 3.3L M50 with schrick cams.

[@Midex74driver]

Can you post the torque specs you used.?

[@iconicars3050]

Midex74driver in the description

[@frontspring1]

What piston rings did you go with. They're saying the m52 oil control rings are better and to use m54b30 top and middle rings.

[@iconicars3050]

I used m54b30 all 3 rings. Noone sells just oil rings alone...to use m52 oil rings you’d have to but two sets of pistons rings, which is very expensive. Its 50$ per piston for 1 set. To buy two sets its 100$ per piston. 600$ in rings, noones gonna spend that. The m54 oil rings are good for at least 150k kms before it starts burning oil. Another thing people forget it that M54 is aluminium block and M50/M52 is cast iron. Completely Different cylinder coating.

[@MrZoranbebek]

@@iconicars3050 m52 is not cast,its aluminum

[@iconicars3050]

@@MrZoranbebek m52b28 with aluminum block only came in bmw z3 which is very rare. The m52tu is aluminum but its a totally different engine, its almost the same as m54

[@nokizorque]

@@iconicars3050 M52 is aluminium block outside of the US

[@fredromekhi2066]

All M52 is Aluminum. The M50 is the last Cast.

[@cihangirasi]

Why pistons m54b30 because low compression

[@iconicars3050]

Because they’re cheap. You can get them at the junk yard in canada.

[@andygrant8091]

bonjour je construit un m52 b30 . pistons bielles et vilebrequin de m54 b30 qui je mets dans le bloc moteur 328 i m52 je veux utiliser un joint de 0.76 de chez cometic . quelle serait mon rapport volumetrique ? MERCI

[@iconicars3050]

en anglais s'il vous plait

[@viktor.stojic]

But things about Head and valves are just regarding that m50b25tu. It's not applicable for non tu models. Give some advice for non tu engines.

[@iconicars3050]

I don’t build non vanos M50’s at all because they have low potential and limited tuning capabilities. They are only good for boost.

[@frontspring1]

What's the thickness of the head gasket?

[@iconicars3050]

1.75mm standard head gasket.

[@frontspring1]

@@iconicars3050 ok thanks I only have 93 octane here in Florida do you think shaving 20 thou off the block would be a good compression ratio for 93 pump gas

[@iconicars3050]

@@frontspring1 yeah. Im in canada we also only have 93 highest. E46 m3 stock cr: 11.5:1.

[@ndforlife410]

How would a decked m50b30 like yours compare to a m52b28 that uses m50tu pistons (.72mm talker) and a 2mm gasket (so about .5mm taller total). Based on some calculations with an m52 head-it has a CR of 11.1:1 and if a m50 head is used (2cc less) it has a CR of 11.4:1. While it’s only a 7% decrease in displacement the rod ratio is much better.

[@ndforlife410]

I’m trying to sort through all the bulll shit you read in forums so if those CR numbers aren’t correct my bad.

[@iconicars3050]

ndforlife410 your calculations aren’t correct. Too high. Compression doesn’t only depend on the piston. Its crank piston rod combo. M50 and M52 blocks are the same height and same bore size. I never tried mix matching pistons. 11.4:1 on an m50/m52 is too high for pump gas.

[@mostafaabubaker669]

The problem is; there isn't really a straight forward how-to for the M50B30 Stroker builds.. each and every build video and/or some sort of an online thread related to such build is totally different than the other.. and it seems like everyone thinks that he perfected the build.. I guess I'm totally lost and don't know whom to believe lol..

[@iconicars3050]

This build is super basic and simple. If you can’t comprehend to it, you shouldn’t be doing it.

[@djverhulst]

Do you know the power output of this engine ??

[@iconicars3050]

228whp with a custom tune and 3” single pipe exhaust.

[@lazar2175]

Hi, i already have built one M50B30 stroker, no vanos and forged pistons/rods. Ebay turbo kit, makes about 670whp although I believe engine is capable of 800+ hp with better turbo and E85. Anyways, I have just bought a e30 shell for cheap and i'm looking into putting a M50B30 stroker into it, considering that M20B25 trans bolts right up to M50B25. While i'd go with an almost exact build like yours, i'd like to install some high compression pistons, preferably getting the compression ratio near 12:1, maybe even 12.5:1. I was planning to run Shell V-Power 100 EU octane (94 in US). Do you think i would be getting knocking/detonation with this pump gas? The car would be track/weekend driven only. In addition to all of this, i was planning on installing some ITB's from S52 or S54, lightened flywheel and maybe Shrick cams in future. All in all, money isn't a huge deal to me, because I already have bought M50 engine that spun a bearing for $100. The M54 crank and rods is going to be another $500. High compression pistons are ~$650, ITB is about $400, flywheel is about $250 and i'd leave $500 for stuff like bearings, gaskets etc. All in all, i'm expecting to build a race ready engine for about $2500, that's quarter price of the S54 swap i was originally planning. I'm hoping to make 275hp on crank, nowhere near S54 power, but still cool. Do you think this power is achievable reliably?

[@ensarbmw9680]

228hp.. Heh und all that making for just 60hp.. Better is e bay turbo 280hps on wheels

[@iconicars3050]

Yeah and never ending headaches with your ebay turbo kit.

[@ensarbmw9680]

@@iconicars3050 I have thinking that we must bore engine to 3.0 but now jusst to change pistons along with rods and camschaft! and easly 228hp! Im making this now thank u!

[@iconicars3050]

Ensar Bmw and crankshaft

[@Gifase34]

Автор, ты - русский?)

[@iconicars3050]

Говорю по Русски.

[@Gifase34]

@@iconicars3050 я услышал русский акцент =) у вас хороший английский... мне ваш английский был очень понятен..

[@iconicars3050]

@@Gifase34 отлично, но по русски мне сложнее было б это же объяснить. Терминология совсем другая. Я вырос в канаде.

[@Gifase34]

@@iconicars3050 на английском лучше, у вас понятный английский.. а русские и так знаю что такое строкер 3.0 у меня строкер M50 3.2 cranck m54b30 rods m50b25 non vanos (135mm) pistons toyota 2jz-ge non vvti (86mm) compression ratio 11.3:1 m52YU(double vanos) oil pump cylinder head m50b25 camshafts S52b32 ECU m3 S52 (siemens ms41) привет из Израиля! =)

[@iconicars3050]

@@Gifase34 проблема установить мs41 ecu? У меня bosch red label, допотоп.