DIY M103 Turbo With CIS k-Jet
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- Опубликовано: 9 фев 2025
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/ @thebenzhouse
This is going to be a video on how to turbo your m103 2.6 or 3.0 inline 6 mercedes engine with the standard cis setup. I apologize in advance for the video quality im a mechanic that is new to the recording world im going to try my best to do breakdowns for everyone on all things to do with the 80s and 90s mercedes. The parts list you'll need to do a full turbo setup is going to be
turbo manifold ( there are many different places to get the turbo manifolds just do a quick search online I got mine from desert designz)
oil feed and oil drain hoses (you can usually find kits that come with both and the bolts needed for the turbo
turbo ( I'm not going to tell you you have to get a name branded turbo or some cheap turbo this is entirely up to you keep in mind you can not add more than 8lbs of boost with the stock cis setup if you want more you need to add efi)
exhaust vband or downpipe adapter to start your exhaust this will vary on what turbo style you get
10AN fitting with a nut on the back for the oil pan you CAN NOT tap the oil pan its to thin I've seen many issues with people trying to do this
intercooler piping if you want to do the same setup I have you only need a single 45' angle piece
blow off valve pick the right size for the turbo you chose
external wastegate if your turbo doesn't have one built in
silicone hoses for your intercooler piping from turbo to Throttle body
oil filter sandwich they are all universal just pick a color you want.
exhaust piping if your going to do it yourself or take it to a shop
02 bungs for the stock 02 sensor and a wideband so you can keep an eye on your afr
boost gauge so you can make sure you don't go over 8lbs of boost
vacuum hoses for boost gauge, bov, waste gate, ect
stuff for oil change because you will be doing an oil change
Those are the items you'll need to turbo your car; I didn't show you in the video because everyone's setups will be different and 90% of the parts we used on this turbo build is stuff we have had laying around to make this turbo kit. All of the tools used in this video are pretty simple tools no special tools were needed to do this build other than a welder. We will be doing a few more videos on this build to show you how we have our set up driving videos and tuning videos. If you would like to see anything in particular or have any questions feel free to ask away I've done many turbo setups with the cis on different cars with this engine it's very simple compared to other engines and setups. We hope you enjoyed the video thanks for watching see you in the next videos.
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I know I'm late to the party, but I'm so glad i found your channel. Working out how to turbo my W126 300SE and this advice is golden! Many thanks from the UK brother!
@@garethbird4259 your good man message me on IG I can help you anyway possible
Just ordered 2 turbo’s for my 300 CE. The scene is getting more popular again I think :)
@@garethbird4259 you'll love it just be sure to tune it properly most definitely 😉
This is very good video! I have m102 190e (-1987) waiting for this similar operation. I had similar idea before on oil circulation so it's good to see someone has already done it successfully! Keep up your good content!
Thank we we will be doing lots more video soon we are still new to taking videos as we work.
Thank you bro
literally just made a video about Mercedes RUclips Channels and of course mentioned how I am constantly discovering new content... Glad I found your channel and awesome vids! Sub'd!
Nice man, not much of a gas guy but it’s nice to see my twin motor getting a turbo too
I got the idea from a 603 with no intercooler we have 2 of them 87 sedan 300d turbo and a 87 300td wagon the setup is so simple and right to the point we've done this to a few gas motors and they all run and drive great
@@thebenzhouse thats exactly what we have! do you have any other social media platforms? insta?
@@Turbo.Teutonic yes I'm pretty sure we follow each other I'll send you a pm
Any plans for intercooler? That would be good
@@rfbu no plans on intercooler but water methanol injection
I have never heard of a reusable oil filter in my life, that's a first for me.
@@TheTasteOfRegret a buddy showed me I absolutely love it it's the only one I use now on my cars 🤣
@thebenzhouse how do you clean it in between oil changes?
@TheTasteOfRegret look up hubb oil filters
I appreciate videos I have same car it's been waiting patiently for me to do something with it.ive been sidetracked with other cars but I know this cars potential and your videos got me motivated to start upgrading it.thanks
That is awesome to hear I'm super happy to hear that it make me really happy to know my videos have an impact like that
Hey man hope you are well.
I started running a 200cc injector activated by a 3psi hobbs switch for boost enrichment, the injector bleeds fuel from the fuel metering head and sends it back to the fuel return line. When it switches on I get 11.5-11.8 afr.
Just wondering if you know the power limitations of the Ke jet fuel metering flap? How much air can it measure until it bottoms out?
I’ve got a 86 300se.
Thanks
Taylor
@@taylorbushnell5838 cool setup man and honestly I couldn't tell ya the max on the air flap
this dude,i watch this video abouth 300 times and i have E300 in my garage and i have money im just too young
Age is nothing but a number my friend I know people younger than me that have done way cooler things it all depends on your ability to do the work
Really great video - no nonsense, to the point 🤘🏻
Great content waiting for the cis adjustment video 👍
Hey bro is there any reason you dont just take the sump off to drill the oil return?
We normally do it's easy BUT most people don't have an engine lift and the bigger tools this is just a easy diy style for most. Just make sure you clean the hell out of the tank
Hi, what is the HP increase?
@hamlulit I think the 103m has 160-180hp or something na. So for every bar of boost we increase it by 2 times the power so 160 would be around 320 at 1bar or 14.5psi of boost. The size of the turbo is important as well and I don't really think you'd want to do more than 7psi, at least that's what I've read. 7psi would put you at 270hp I think 270-250, you need a tuner. I assume they say 7psi maximum online because you'll run out of stock injector beyond it or blow a head gasket. There is virtually almost no limit to the amount of boost depending on the turbos size though, if it was all forged, a 160hp moter could take 5bar or more multiplying it's power 5 times 700hp+.
@@bigmoney4661 thanks for the detailed reply!
Where did you put the vacum Line to the fuel regulator?
I will turbocharge my 300sel too.I will use the cis but i have to relocate the cis and use flexible pipes for turbo setup.Air has to be sucked through cis to turbo not pushed to cis😂
Great vid! Happy burning/shredding rubber!
Thanks man and it rips for sure
On the oil return line from the turbo, what's stopping you from simply drilling and tapping the oil fill cap on the valve cover and dumping return oil there? I don't think anything there would be upset with the extra feed and it would go back to the pan without any worry about cavitation and sloshing, as well as the shavings. And it would be 100% reversible with a $10 cap. I definitely haven't tried this, just thinking out loud.
Turbo oil drain can not go upward from turbo, if it will oil wont just immidietly flow down drain in turbo but it will collect in turbocharger and be able to go past seals and into exhaust and intake side of turbine wich will result in huge oil consumption and a lot of smoke. When you make turbo oil drain make sure the hose goes downward all the way from turbo to oil pan and that at the place where it enters oil pan it is still above oil level.
(I ask bc i don't know)
You are running a no intercooler which means the hot turbo air is going straight back into the engine just what to know how risky that is and is there downsides or does it ruin your engine or won't be able to run a long time bc of the hot air
We have water methanol injection now but for the 1st few months it was cool out and it would heat soak after about 3 hard pulls engine still runs stronger than ever with no issues
This is a great video very informative
I'd take the oil pan off and clean out the shavings, to be 100% sure pan is shavings free.
Yes always but this is just a quick and easy way to get it done if you don't want to remove the engine to take off the pan is all if you get a boroscope you can clean it like that as well that's what we did here
great video sharing some useful knowledge, what turbo size is it , what presure are aiming , and final do you do a upgrade to head cylinder
studs or are using the stock?
I'll be posting a video on everything about the car here this week
Love it. Great job !!!
Question: are you using some ECU or anything to control the boost etc ? As I don’t see anything mention about this ? Thanks
Stock ecu nothing modified there what so ever It's just on wastegate presure 8lbs with no issues as of yet we've put around 8k miles on it so far
@@thebenzhouse that’s amazing how this engines are capable with “ simple “ job. Great job again and regards from 🇬🇧 UK . Starting my project on September
@@BBartyFly these engines if all you do is boost and efi can handle easy 700 hp no problem they are amazing
@viking2253 100% stock just a turbo that's it
@viking2253 I always try my best to msg everyone back I do get lots of messages so if I miss one I apologize
I have 300se 1987 are this same Engine you have???
If it has the inline 6 then yes I know some of the 300ce had the 4cyl just gotta pop that hood and take a look
@@thebenzhouse Have inlane 6 and 185 Hp no catasolator car.Runns grate only 10tusen km grate chape.Wath do you tink abaut orginal hedds i have if have those Open and down and two Gt3 smal Turbos.Spell like hell sorry hope you can anderstand me hear!!!
@Jarmo minkkinen the engines are very strong the head is good the only problem with the early m103 engines are the camshaft score easy because they used a softer metal the m103 3.0 inline 6 are amazing
@@thebenzhouse Okej tanks four You are answer.I have Question wear can I se wath Engine gear i have.The Earlier owner tell me The car have Engine from 1990...Can you help me hear tou se wath gear thes Engine are from! where to look.!?
Can you do the same job in this video on a m102 engine with 2.0litre ?
Give me a little time I will be doing it soon
@@thebenzhouse this is serously one of the best Mercedes benz Chanel on youtube. I have learnd so Much just watching your videos!
@@A.Benzelstierna thank you man really that means a lot I'm trying to make the videos as informational as possible but once that camera turns on I get so dang shy and fumble my words 🤣 forget to add stuff ECT but I'm getting there I think
@@thebenzhouse keep up the good content. If you are thinking of selling komplete turbokit conversion as the one you use in this video I would be intrested to buy as it is hard to find in Sweden!
Hi. Can you give me a link to a fuel to air mixture gadget?
We use the innovate Motorsports one I don't have a link I'm sorry
Could you do something similar for the m104?
With cis yes if it's fuel injection I don't think so you'll need to tune for it so basically stand alone efi
@@thebenzhouse So the early stage m104 like in the 92 300ces had the cis system but was an m104 24 valve your saying with this info it should work?
@@zacharyherrera-df1hl yes from what I understand as long as it's cis I don't see why not; If I'm wrong I'm sure someone can chime in.
Hey I see from the description that you got the manifold from desert designz. But did you have them custom fab one? Or do they already make them? I couldn’t seem to find them on google.
It's just a local guy here in arizona there are also a few other people that make them as well
@@thebenzhouse sorry to pick your brain like this man I’ve just wanted to do this for awhile and information is sparse to say the least
@noah pierce you have absolutely nothing to be sorry about I'm more than happy to help 😁
how do you do the tune on the k-jetronic? can you tell me how do you adjust the fuel and the parameters please
That video will be getting posted 2maro 😁
What do you need 2 do for a twin turbo
A different manifold and I would prob build a intercooler like they did back it the day over the cis
can i run an intercooler with this setup?
Yes 100% you can most definitely run an intercooler
can you post a link to the manifold please? Thanx!
I got it from desert designz here in arizona
@@thebenzhouse how do i contact them? Im in denver and I cant find any links thnx!
Where did you get your turbo and do they have a kit
I just had a extra laying around for this car and it's a custom kit I guess you could say I put together
@@thebenzhouse What are your thoughts on a rear mount turbo?
Hi , I got exactly same mercedes with same engine , I would like to copy your setup, what bhp gains you get? And can you tell me what turbo you using , love your videos ! Thanks !
Hi, is it possible to use an OM606 exhaust manifold and turbo?
No not that I'm aware of I know people have drilled out holes on the om603 turbo manifold to make work but never the om606
@@thebenzhouse ohh, thank you! Kinda wondering for a future oem-look turbo kit.
@@marcox43 for sure
Where are you located? Could i hire you to turbo my g300E? its got the m103 with a 5 speed manual LMK
I'm in Arizona and do you mean you have a 300ge the old school gwagon
@@thebenzhouse kinda old school, first year of the w463 series. SWB 2 door. 3 tons the m103 is a slug
@@omgrown that's awesome man where are you located
@omgrown msg me on Instagram my @ is benzboi23
How the hell did you tune the jetronic system to compensate for boost?
Check out my other video it'll show you what I did
What year?
@@yassirc3681 this is a 89
What reusable oil filter do you use?
Some called a hub filter it's made for a Cummins but fits and is the perfect size for our m103 cars I can get you the exact part number later 😉
@@thebenzhouse the would be awesome it’s become difficult for me to get filters locally
@@GearShiftShutter I apologize it took so long to get back to you I just got the part number #3204 and it's from hub filters
@@thebenzhouse awesome! I’m about to order it now thanks so much for getting back.
@@GearShiftShutter of course man sorry it took so long to get it to ya I've been very focused on my evo1 build I forgot
do you need an intercooler? can you run without one?
No need for one as of now it is nice weather but when it gets hotter we will put water methanol injection to cool the intake Temps properly.
Been planning a similar kind of setup. What is the fuel mileage like?
It went from about 28mpg to 24mpg
@@thebenzhouse Thank you for a quick answer! I was curious to know because I’ve been planning a similar setup for my summer daily.
@Moneyblock of course I try and stay on top of it 😁 and yea it did go down a little but not to bad
@@thebenzhouse Yeah that’s not bad at all. Usually out of tune M103 doesn’t even get that good mpg😆
@Moneyblock I mean depending on alot I average about 30mpg on most of the cars believe it or not the worst I've ever seen is about 17mpg but needed ALOT of tuning plugs oil ect
Do you have a w124 300ce engine for sale
I do msg me on ig benzboi23
what size is the silicone tube that goes in the throttle body? 4 inch?
Yes you are correct it's a 4in to 3in
@@thebenzhouse one more thing, you are not running the stock lambda right? for running the AF ratio gauge you need to install a new oxigen sensor i guess
@Junito Master I do have the stock one in I also have a new one to ready my afr before the original
How much boost can I get away with without an intercooler? I'm from Gold Coast QLD AUS. Average temps are 27 Deg C 65% humidity?
I wouldn't do more than 6-8 lbs it will heat soak ect we ended up adding water methanol injection to this specific build also it all depends on the tuning as well you can't get 2much with cis setup if you want good real power with no issues efi is best but the cis is good for now
What ecu u use
This is stock factory k jet no ecu if your looking to do a stand alone ecu check out some of my other videos 😉 I have a step by step EFI series!
@@thebenzhouse bcz it wont work with a turbo u need more fuel and if you out external relay for more fuel it s not reliable you need ecu or wont turn on
@@joehebbo7047 it can work up to about 6-8lbs of boost with zero issues go check out my other videos. I did it to multiple m103 engines I drive them around on a daily. There are a few other people that have done it as well you can't get crazy power out of them but you can run them with little boost.
What is HP on engine?
Around 250
great content thanks !
Thank man I'm trying to learn how to record everything and not be so boring about it 🤣
@@thebenzhouse some very useful content especially the oil pan plug. if you know anything about modifying the cis injection a video on that would be much appreciated too !
@@seannolan3465 yes that will be in one of our later videos but it will be coming soon
👍🏻👍🏻👍🏻
What is the "CIS" ?i don't know english
continuous injection system it's a type of fuel injection
Do you possibly have an instagram page?
Yes of course I don't really post there it's benzboi23
If you can dm me, I want to see if I could do A Rear mount turbo have the similar car.
You most definitely can where would you like to msg
Think I'd rather just remove the oil sump, but suppose this is easier in some respects
The oil pan is easy to remove you have to lift the motor pretty high tho
Красавец
Not a good idea to use reusable filter.. for such sensitive Maschines like combustion engine.
Ok I wrote it before I saw you drilling oil pan without taking it off 😫😫
@@kostia_mu yepp I use a reusable filter and the car runs just fine over a year later with zero issues and 16k miles on it since it was done
@@thebenzhouse Fine! Im automotive engineer, i also related to engineers of Mann Filter in Germany i also visited R&D center .. so there is way more tech inside of a oil or air filter as in coffee filter :) I know in US you use K&N washable air filter .. its crazy but I never heard ob reusable oil filter. But ok. Maybe you right and im only a Victoire Marketing, who knows, but 16 miles kind short period. Hope your engine do well further mate! Of course its nonsense to talk about oil filter while you have aluminum chips in the oilpan. No front- I just very horrified! Your car, you do what you think is right for you! But that’s why we are skeptical about US import cars in Europe..
@@kostia_mu 16k miles that's 16000 miles
@@thebenzhouse there two service intervals, two oil changes. Maybe you wouldn’t see any problems in this period without oil filter at all, who knows. But problem would increase cumulatively. Once I drove w201 250d with over 1 Mio miles on it (the counter goes for a second round) than you can say you did everything right. I would like to ask you for reasons for your decision. Is it for saving money or you think Filter Industrie is a skam?
@@kostia_mu it comes in handy and the filter no one carries here in stock so we always had to order them it just got annoying so we started using this one and it turned out to work great I have over 10 cars and use this brand filter all of them do fine there just convenient is all