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- เผยแพร่เมื่อ 16 ส.ค. 2020
- At long last, "part 2" of our m20 diy stroker is here!
Will goes over everything you need to know in order to do a budget NA stroker m20. He also goes over a bunch of questions you guys had in part 1. Stay tuned for 2.7 low compression, and high compression custom piston build!
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She’s sweet, it really goes, Will is sending me the chip when the correct one shows and then to the dyno I’ll post a video, as well as a road test. They guys at DBO did the stroker as well as a 5 speed swap and a 410 LSD, I haven’t been out of it since I got home this morning just burning up the road. Can’t say enough they did an outstanding job. Long way from Crockett Texas but well worth the trip.
How is the 5 speed with a 410 LSD? I have a 91 auto vert with 410 LSD currently, and then all the fixings to do the manual swap. I've been worried that I'll have really high revs on the highway.
Ash 4700rpm 100 mph 5th gear, I have a video I’ll try and post
@@goodkarmak9z821 do you have an syno number
I’m like 5 years away from getting another e30 and this series has me pumped. Super helpful thank you
Finally been waiting for part 2 thanks thou
It was worth the wait, thanks for this video!!!
So informative and all very clear. Great video keep it up guys.
Awesome video guys perfect way to expIain the difference between super eta and normal M20b27 thanks for the documentary
this video is so cool as I'm building my 2.7 seta stroker. thanks very much
Woo Hoo!!!! So glad for this I've marked it in my browser! While mine is carb'd I've saved a 3.64 lsd for years for the rear... also still have a Getrag 4 and 5 speed for this. Wonder which one to put back in? You guys ROCK!!! the piston advice is GOLD!!! I've been so conflicted on this part and it could destroy my crank and engine. Whew, dug out my parts and I have the B27 pistons, rods and the ones from my B20 to work with. Guess I'll have to measure twice and install to check the clearances.
Just installed the ECU with the SSSQUID chip. Holy crap it screams, It's so much stronger revs a lot faster/higher, first/second are crazy quick. Its a different car, you can really feel how strong it pulls. Headers and new exhaust next. I've got some old 14in tires gona get a "smoking" video, will see if I can get it to the dyno this weekend. I'm really stoked, thank you
Seeing the silver early model with a Texas Antique plate in the background made me question if you had stolen my car while I am at work. LOL
For people outside the US watch out with the statement at 7:25, In europe the M20B25 engine was already available from 1985 onward and early ones had the crank position sensor on the bell housing.
Very astute observation sir! Apologies for not addressing this off the bat!
Super eta heads have the same 325i outer valve springs, but no inner valve spring. You can add the inner spring and bump up the redline if you have the ability to do so. The cam is also milder than a 2.5 (for low end torque) and the cam has less journals, which means that if you run a 2.5 cam you need to drill out some oiling holes for a few journals (which were previously unused).
If I'm not mistaken, the SETA head has the same number of oil holes as the b25 head. it's the ETA heads that are missing the extra ones.
Looking forward to hearing this thing run! Good info here for people who may not have access to the knowledge.
there is a video of it running on my instagram if youd like to hear her!
@@DENVERBEERANDOIL Definitely checking that out
How different does it feels from a 2,5is?
Couldn’t find that video of it running on your Instagram
Yes!! Full send with those pit viper! 🤣
@DBO hey awesome video,, when you swap out the water pump from a E series to a I series you have to change out the thermostat housing & raditor. Overall nice job
Excellent 👏👏👏👏
My first car was a 1986 BMW 325e.
Always wanted to do the "super eta" i head swap but never got around to it.
I replaced it with a e36 318is. Selling that little red e30 eats me up to this day.
Yessss tanks
Wow. Needed this, convinced me not to swap a b25 in. Love it
That must have become a really bold engine!!!
Hell yeah 😎👍
Car : BMW 528e
I have the same 2.7 super ETA motor. Trans is a Euro getrag 220 with a single mass flywheel conversion and Sachs sport clutch. Driveshaft : front e36/ rear OEM. Fortune 500 suspension 8k front 6k rear. Reinforced subframe. E34 540i brake calipers , pads and rotors - straight bolt on; no adapters needed.
Please keep going with these videos. I love these nerd tech videos. It helps give me the motivation I need to keep progressing my build!!!!!
Seems to be a hit so far! I'll keep pumping them out!
could you do a video on boosting a M20B27? i’ve been debating whether i should and what i should look out for. love your videos by the way
Love your content, keep on posting videos
I'm impressed with your technical knowledge. Are you knowledgeable on the M70 V12? I attempted to reset the airbag light on my 1988 750iL? I discovered after the fact that the tool i used was not compatible. I inadvertently connected this reset tool to one of the round 20 pin dme sockets instead of the diagnostic port. Car is now in a crank but no start condition. Even after swapping all three computer modules (two dmes and eml module) same issue. This is Motronic 1.2 using the xxx056 modules.
EML light in cluster blinks and stays lit.
What am i missing?
Hey Will, can I use 2.5 facelift pistons with a M52B28 crank? If so, does it require machining the skirts?
whats your opinion on using eta pistons? kinda looking into a 2.7i build instead of an m50 swap since i have a spare eta engine and my car is an eta as well
Also that oil pump sprocket wheel, should update for newer model, that metal can rust, that for break, newer is cast and will last longer and i would always use in stock built those newer e-trox head bolts, when those older one(normal bolt) need that warm-up cycles
I´am curious you say those head bolt´s need warm-up cycles, before torgue last 90 degrees, when my bmw e30 workshop manual says no need warm-up cycle with those e-trox head bolt
im actually doing a stroker m20 too :) i have a b27 but im putting a 3L m52 crank, super eta pistons, and 885 head im putting it in my e28 528e :)
Love it! Hit me up on insta @mile_high_euros and lmk how it's working out for you!
@@DENVERBEERANDOIL Its going super slow right now because i dont have the money to buy everything to refresh the motor. i have all the parts but the pistons
What compression ratio do you get if you just out the 2.5 head on the 2.7 block and bottom end?
Suppose if it's low just go turbo
I got a pragmatic question about an basic m20 rebuild
I didn t already build it in ever so far in a suitable bmw (e28 e30 e34)
Wasn t it necassary to rework the head bolts after a certain mileage of driving??????
What were the final numbers you guys were looking at, at the dyno was it what you thought it was going to be at first 200 for cheap job & 300 for the job done right
I was looking and I have 2 ecus. One is a Motronic 1.1 from a 1987 325i. The second is a 0261 200 172 from a 320i. Could either of these be used or be chipped to run a stroker?
I am building my strocker i have a 325i i put an m21 crank, 320i rod 130mm and stock 325i piston
Thanks for the video..always learning and I liked that you included the necessary details where needed and left out what wasn't. I really liked the plastic bag test for interference that you did. I am currently in the process of building a 2.7 but I'm using 9.4:1 European dish top 84.5mm pistons and decked the block 2mm to boost it up. it should in theory put me over 10.2: 1 compression. I'll be using a Schrick 284/272 duel pattern cam and although it isn't necessary from my sources will use an adjustable cam gear. I hear the schrick cams are a tad retarded in timing. This will be paired with a stage 2 sssquid tune, headers, supersprint exhaust. I'll be using stock head bolts and gasket. Can you share how you did the port match machining with the intake manifold? Is there anything I might be missing that you can elaborate on please? thank you and look forward to your other vids.
Finally
What's your opinion of a 325i b20 stroker? I'm an e30 owner myself. . .
You guys should do a supercharger kit, I'll buy one =)
Another thing to add to the list of "shit will wants or should do" haha unfortunately there is only enough time in the day. Perhaps when a few more projects are complete we can play with something like that. But as it is, so many things to do and not enough time to do even half of them 😅
serious question. I Just bought a m20 engine that supposedly had 80000miles on the block and 15000 on the head for 300$. I bought this to replace the m10 in my bmw e21. I bought the setup and the previous owner said that it is a 2.7 block with a 885 head. I was able to confirm the head was indeed an 885 via stampings as for the block im at a total loss. I figured that if it is a regular eta 2.7 block that the 885head would totally kill the compression so i would like to believe that the block is a "seta" but the intake is also native to the 885 head so i see no tell tale signs of it being one or the other any suggestions. Thanks
quick thing the rod on the m20b27 is shorter its 130mm vs m20b25 which is 135mm that is due to the block having almost the same deck height difference of around 0.5 mm so the main difference is in the stroke of the crank since its 81 mm (2.7) vs 75 mm (2.5)
Does having the stock m20 oil cooler make a difference? The early model 325e didnt come with them. Was just wondering,
Sick videos brotha wrench on
Yes it definitely helps with keeping oil temps down and slightly increases oil capacity.
Id like to see a manual swap on an older V12 7 series like an E32 or E38 because they are so cheap to buy used these days. I think that would turn one into an awesome daily driver or road trip car. Probably have to used parts from an 850i manual ,but they seem fairly easy to find now too, at least the beater ones. Also, I've been wondering how an older first gen X5 or X3 with a manual trans. would be converted to 2wd or something like that, might be interesting.
The only issue is the transmission. The Getrag 560 in the 850i and 850csi is worth $5k+. I have a video with my e34 with a v12 and a 6-speed on this channel. There is a company in Poland, PMC, that makes an adapter to run the m60/m62 getrag 420g behind a v12 and we have been talking about doing the swap. I have a super nice 1989 750il that I am leaning towards 6-speed swapping.
Pretty cool video. Been running my SETA stroker for almost a year and its definitely fun. What part of texas are yall located?
Crockett
Maybe make a head to head race between an m20b25 vs m20b27 vs m20b28... That would be a cool video & we will choose wisely on what to build...
What parts are best for the 2.8? Like - what’s the formula for 2.8 and 2.9?? Or 3.0 for that matter?
For a quick reference, Metric mechanic has a really good brochure on their site listing a bunch of different combos and displacements and how to achieve each.
I’ll check it out! Thanks!
So reuseing head studs is a no go? Especially when they've been cranked down real hard beforehand. Interesting 🤔
that is correct when speaking of the m20 e14 head bolts. the m30 however is not the same. HOWEVER we did use new bolts on your car lol
Hey how much you will take for build for me same thing as you did in first and second part, I have engines 1987 325/325e e30 and 1984 325e e30
Message me on Instagram. @mile_high_euros
So let me sum up the build with a list of the major parts that a guy needs to build this budget Stroker...
1) An engine block from a 2.7 or a 2.5i M20
2) The Crankshaft and Rods from a 2.7 M20
3) The Short Skirted pistons from a 2.5 M20
4) An "885" Head from a 2.5i M20.
5) The Ignition setup from a later model 2.5 known as the 1.3 which contains the front mounted crankshaft pickup sensor and all it entails...
6) The larger runner Intake from a 2.5
Besides all the machinery and labor would you say that sums it up in the major parts needed?
Yes, a couple other items of note, the b27 and b25 use different AFMs, use the b25 AFM. B25 uses 4-wire o2 sensor vs. the b27 3 wire. The b25 has a larger throttle body setup, make sure to use the b25 throttle body and intake boot.
Denver BEER and Oil rocking a White Claw at 4:40. Minus 10 man points.
Lol, we don't discriminate
@@DENVERBEERANDOIL Haha. Totally. I like them too. Just thought it was funny.
I remember using an M50 28 crank, m20b20 rods,m20b25 pistons and 885 head
Sounds like a sweet combination for high rpm
@@DENVERBEERANDOIL Alpina used the diesel crank, with b20 rods and b25 piston I think, with a cam of their own. And rods from the M50 fit, and are lighter, but don't know if they are stronger
did you have any issues with it? I'm also building one (329i)
@@maswazidavid8869 I didn't build one, I was reading all over the place for the combinations ppl did
What the nm maximum off the manivel m20b25 please?
What would the result be if one was to use the bottom half of the 2.7 with the 2.7 dish'd pistons and using the "885" head and 2.5 Intake and Ignition? Perhaps lower compression but that may allow use of the 87 octane gas? Any comments?
Compression would 8.42:1 compared to 8.5:1 of the super eta and 8.8:1 of the b25. I just completed this exact setup in a car and it felt great. Also you could definitely run 87 octane in all three of these setups with no detonation issues.
So basically if I want to boost my 2.7 all I need is the I head, arp studs, and some seals? Do I need the i electronics and harness?
I’ve been down that road... you need the 885 (I) head, intake manifold, throttle body, all of the 2.5 pulleys, the bracket for the crank sensor, cranks sensor and the 2.5 harness/dme
Super eta 6kb with 885 works fine
what part of Texas are you guys in??
Hi sir just wanna know how to convert bmw e30 2.5 to 2.9 may you please assist thank you
How do you guys like that kobalt torque wrench? I'm wanting to get something reliable for my m30 turbo build.
It functions well, has good range, plenty of features. I'm a fan. Only beef to speak of would lie in the electric interface but that would be splitting hairs if I'm honest
@@DENVERBEERANDOIL when's the m30 head rebuild video coming? Ha
so i have a 2.7 block with stock internals and i want to throw on a 2.5 head i want to boost it but ive heard that i need to change the cam on the head is this true ?
Not even remotely. 2.5 cam is completely fine for that application.
Cuantos caballos puedo conseguir con el motor original
Now im really curious what a super eta instead of a regular eta does on a dyno run.......🙁🤔🤔 but thats just me....
Hey guys I love the videos.
But you promised a wiring harness video
to complete 2.7 block with 325i top end
in a early model car . . .
Build one for me next, thanks
you got it man! i have to build atleast 2 more for you guys to watch and have the parts....
I ll hope the head..will sustain the xtra compression....a standard 2 l head is not going trew that...🤔🤔🤔
Why not swap to the M30B35?
So this is similar to a k24 with a k20 head swap? Better flowing head on a larger displacement bottom end? Can it rev higher? What kind of power can you expect out of this?
Also, is that vette sitting in back ground waiting for its v10 swap? 😉 😉
Pretty much the same gains/theory, yeah! Another one of these ‘stroker’ builds is the m60b44, the m60 head with the m62 bottom end... RE the vette, I’ll let Will respond, but I’m all for an s85 shitbox - Hamish
Don't get your hopes up! It's not happening sir!!!!
DBO I am wearing you down. Lol.
Will won’t say this, but the corvette is slowly dying
Negative! It needs an ignition switch and it got hit by an Uber. She's mint!
What about injectors? Do you use bigger injectors? If so what size?
M20b25 injectors are the ones to use
I want to see that car run.
Check out Wills Instagram
Love the m20, butt I love the m30 more. Could you guys do the same series, butt on a m30 build?
Agree, no offense to the M20 crowd (I have 2 of them myself), but the M30 is the madman (done right).
No arguments here. But the m20 is a versatile little beast!
@@DENVERBEERANDOIL agreed! I have an ETA and a 2.5. Have been thinking about building a 2.9 liter stroker with a 2.8 M52 crank, short rods, and custom pistons + megasquirt. Have all the stuff for it. So why not? As you said in another video, "Legos for adults". LOL
'86 325es chassis w/ getrag 260 / 2.93 LSD (may go higher).
-m.oswald bmwe32.masscom.net
Exactly! That's why I love these things! I get to play Legos at 31 😅
DBO just rebuilt my 1989 bmw 325i m20 and it sounds amazing, but my main project is a 1984 e24 with a m30b32, I also got a m30b35 long block for 50 bucks, hence the question of building a stroker or should I go turbo?
I do find these videos interesting, but the information is making me think I may just be better off doing a 24v swap haha.
I might be mistaken, but in your M20 video from 22 february, didn't you use the B27 crank and rods with the B25 pistons (and head)? Now you're saying that the B25 pistons can NOT be used in combo with the B27 rods & crank.
See the "important piston info" video. All will be answered.
@@DENVERBEERANDOIL will check it out. Thanks!
@@DENVERBEERANDOIL Just watched it. Good info! But I might have another question (or two). Could an pre-07/1990 B25 piston work if you would machine the bottom side, so it would clear? Or is this a horrible idea?
Also: what's the advantage of the B25 piston over the B27 piston, if you're going with the B25 head? Is it compression? (Planning on doing something similar in the future, with boost)
I ve had it!!🤣🤣🤣🤣🤪👍
So vast majority m20 strokers are low comp builds? What’s the CR if 2.7 rotating assembly is used with 2.5 head?
For high CR stroker build is best to start off with m20b25, install b27 crank and rods. Machine b25 pistons to fit?
He claims that you cant run a 2.5 piston with a 325e con rod and 325e crank, im running that setup and it runs just fine
What thickness head gasket did you use? Any additional machining on the pistons? Because I have video of me using both of these combinations and showing why they don't work and testing interference fits with the head on both setups.
Not trying to throw shade. Genuinely interested in what you did to make it work with no machining..etc.
DBO my apologies as i panicked and stopped watching the video in the beginning. I asked around some friends of mine who run the same setup and also said they have no problems, one mentioned apparently thats how the alpina engine is made. Answering your question, I had a machine shop clean and build the bottom end for me. They never mentioned any extra work they did other than just cleaning the block and putting 325i pistons on the 325e connecting rods. My block is also a 325e block, not sure if that makes a difference. You also did mention you machined the block to the lowest you possibly could, did you test fit the setup before you did that? I dont take it as shade and please dont take my previous comment as shade either. Im genuinely interested as well
Also to note, its on a 325e crank and 885 cylinder head. I decked the head and had valve stem seals done but thats pretty much it. I also have a Goetez head gasket
Transmission automatique is soo good the cars one big turbo the 2L7 the casch days is numbers one the transmithon automatique the série 7
I thought the 2.7es had special pistons that raised the compression because the 2.7 is 200cc's bigger than the 2.5. ?
the b27 actually has the highest compression of the US m20s at 9.0:1, but it is because of the small combustion chambers in the 200 head. all b27s have the same pistons besides the super eta. b27 pistons with 885 had result in 8.42:1 compression ratio.
So what’s the stroker part?
Ho the motors is the for sale please seur
Nicely way of forcing a 2.5 piston with the disired webb forms....🤣🤣🤣🤪
Ist ja wunderschön zu sehen wie die amerikaner an deutsche sachen herum schlusseln....🤣🤣🤣👍
I still don t get 1 point
Im going to buy a bmw 525 i
So from Eta to super eta you need a stock 525 i motor
And a 325 engine to assembly it togheter to an (super eta)
Please one troc the e34 M5 one e30 325 i is the terrain in france the valeur is terrain is 80 mil euro just one
Put one these in that shell Chris just bought, WE NEED MORE STROKER CONTENT
The frenchy is one e30 for sale is m'y bb cars please just one 325 toue porta
C est normal que ça e30 marche ci fort le e34 M5 et un 3L6 qu il a passer en 3L8 forger et un big turbo sont e30 bleue et blancs fait plus de 1500 ch dans une vidéo il mais même sur 400 M la misère a un avion à réaction
Look you tub one e30 motors e34 turbo is Roumanie the cars is the avion
Is will going to make more videos when he gets out of prison?
Will quit doing car stuff.
@@DENVERBEERANDOIL what a shame for someone with so much talent!
D après ma notaire il y a un terrain a 80 mil euro et l autres a 130 mil euro just one troque the e34 M5 + one e30 325 i vous aurait des terres en France ou vous pourrait y construire une maison un hangar là-bas c'est tranquille c'est la campagne
Je vendrait un rein pour en avoir une si vous arriver à lire le français on fait un troque j ai 2 terrain en France on échange une e34 M5 contre un terrain en France pres de Disney land comme ca vous serait pas dépayser l Amérique en France
The motors the e34 M5 is 3L6 the forger the piston bielles villebrequin forgé is the mille chevaux one big turbo look in Roumanie one e30 motors e34 m5 yeee the e30 in Roumanie one e30 motors e34 turbo is the big boss in Roumanie
At least some people who have some knowledge....if everything was exchangeble....bmw wouldn t have made different motortypes.....
But be carefull with the heads when you re motor is still cold
Especially for young people who just got an bmw m20 in thier car
And trust me
I know what im talking about
Been there
Done that
And did really pain in the wallet...🥴🥴🤣🤣
Why do you call it an E.T.A. ? Eta is a word meaning thermal efficiency.