Weber DCOE, Part 2B Selecting jets and venturi's
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- เผยแพร่เมื่อ 27 เม.ย. 2020
- This Video deals with the baseline setting and selection of the DCOE weber carburettor. It provides an explanation on how to select the proper venturi's and jets for each and every circuit of the carburettor. Its a fairly long video, yet it addresses many details . Its the follow on of Part 2 A , disassembly and cleaning, and Part 1 that covered the functionallity
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You're never explaining TOO much. I've learned, in depth, how these carbs work and for that I'm ever thankful.
I wish teachers at school used the same calm, collected finesse you show in your classes. Thank you for taking the time, amazing Weber rundown!
You're very welcome!
This is the best video i have ever seen about Weber!!!
So much details and i love your drawings on the whiteboard awesome :D
Thank you Werner
Today, I learned so much and I can't say Thank You enough. You really pulled it all together very nicely and the mystery is gone. Take Care and be well. Dave, Niagara Falls.
Thanks Dave, I try
Oh, what lovely bird singing in the background. Countryside workshop dream!
Yes it is///
I am a German certified master mechanic with decades of experience with carbs (sorry for tooting my own horn...) but I enjoyed every bit of that series of videos. Thank you so much!
Glad you enjoyed it! always love to hear from experts like you
Toot that horn, us carb guys are a rare and valuable asset.
I wish that i had seen this Series 37 years ago..great job !
Me too , and that I was 37 years younger
Never had a Weber carburetor and I never will, but I really appreciated how much I learned. Not enough to do anything useful, but enough to appreciate how complex and beautifully designed they are. Thank you!
Glad to help
Not only was your presentation informative but it was structured in a way that is easy to understand. Thanks.
Glad it was helpful!
I just installed set of 40 DCOE's on my BMW 2002 and am re-jetting the carbs and your video has helped me immensely along with other weber manuals on the internet. You explain everything is such a well manner and I love your diagrams, it's amazing. Thank you!
Glad it helped
These are some of the best videos that brings values and will stay forever where us and future kids can learn about carburetors.
I truly enjoy watching your videos; you explain things so clear and effective that the new person without the background can understand and not get overwhelmed. Thank you so much for taking your valuable time showing us your technique so we can keep our classic cars on the road. Have a great day. Regards, Jay
Takes me back 25 years, twin 40s on a 2.1 pinto for autograssing. Excellent videos Steve.
Thanks for the comments
Fantastic video learned so much about my Weber's. Can't thank you enough 😊
These videos by Steve are probably the best instructive ones I have watched. I am rebuilding 105 Alfa Romeo engines and have had difficulty in understanding and getting the jetting and settings right. Well done and thank you. You are a great teacher
Glad to help, Thanks for the comments
Just wanted to say your DCOE videos are awesome! I am just preparing a weber for my Giulia and i think your pace, look on details and focus on subjects are perfect! Thanks!
What a great source to learn about those mysterious Weber Carbs. Thank you D3Shooter.
Thanks for the comments
This is incredible. Trying to read up on DCOE's in anticipation of swapping my Datsun 1200 over to twins at some point. Absolutely amazing video - the best I've seen thus far. Can't thank you enough for documenting this in such great detail, and the illustrations were immensely helpful in conveying the information. Cheers from British Columbia, Canada.
My pleasure , and enjoy your Datsum
I just did a rebuild on my 40 dcoe, while watching your video's. Thanks for these very comprehensive video's! Today was the first time for me to even open up a carburettor! Felt like being back at school again!
Thanks, and did it work out for you
@@D3Sshooter Well, I still need to refurbish carburettor number 2. 😂 And the intake manifold is at the machine shop for re-treading. Hope to get the car back on track this summer.
This has been an awesome series! Thank you for posting this!
Also, the same 5 people are giving a thumbs down. Losers.
Love the white board. This information is like going to school and learning!
Awesome stuff, Steve!
Thanks so much!
You are not explaining to much. You do it very well. THANKS
I appreciate that!
Never knew there was so much in a carb. I do now. Thank you. My cars are now injection which i guess is a whole new lesson but this was really good.
Thank you David and indeed injection is another area of interest and hours to talk about
Hello, I'm zitta from Japan. Your logical explanation is great useful for my work. I'm now rebuilding Catermam Seven which equip Weber DCOE. It's my first experience to rebuilt Weber DCOE at this time but thanks to your video I could complete the work without any trouble.
I'll keep on watching your video!!!
Enjoyed watching this, with my morning coffee, very nice, thanks Sir!
Glad you enjoyed it
Thankyou for you knowledgeable video. I race in Formula Libre with a formula Vee with twin side draft webers dc40. We are about 2sec. Off the pace of the nationals formula Vee SA. I have learnt a few things from you .Thankyou Cyril
Thank you for this video and all the videos you have shared with the public. They are informative, educational, and very professionally done both in content and presentation.
Very comprehensive explanation of venturi and jet sizing. Thanks Steve. Stay safe.
Thanks, you too!
Wow! What a great video. I have always loved the look of weber carbs on performance engines but never had one. I have always heard people say that they don't work well, and now I know why. It's because they don't know how to tune them!! They are like the "swiss watch" of carburetors. Great video! Now I have to go watch the others!
Glad you enjoyed it!
Thank you so much for sharing all this knowledge. I'm restoring a BMW 2002 and want to fit Weber dual side-drafts. This video has been invaluable.
Glad to help
Simple and informative! Love your presentation style. Can't wait for the testing and fine tuning video.
Coming soon! Thank you
Thank you once more for sharing knowledge Steve. Very informative tutorial and the board charts compliments the whole procedure. Well done
Glad it was helpful!
Yes this is the best video that I have ever seen on webber carbs thank you so much
Thanks for the comments
Hi Steve, fantastic well informed videos, you have lots of skills up in that head...if i was Mr Weber I'd be offering you a proper super sponsored channel. I'm mid 40s now and have an rs2000 with the weber idf44s i got them bang on once balanced and synchronized. Was probably pot look. I have a few different set ups and you've inspired me to dig them out and see how they run. One little tip if it helps? you might of heard of it...lip barm on gaskets...its an old hotroder trick i believe to swap bits all the time quickly. 👍
Thanks for the comments, well I learned something here Lip Barm on gaskets..... I need to check that out TXS
I found your videos to be a great source of info. I am a retired motorcycle and auto tech. I have a Willys (Ford) M38 Jeep with a turned Volvo B20 engine. The Jeep came with the Webers in a box but being familiar with the stock
SU carbs I went with them. The other day feeling a bit bored I pulled the Webers out of the box and started the cleaning and refurbishing process. Once I took the float chamber off I realized I needed more information so I would not ruin anything. This series of videos and the detailed explanations of each circuit are well thought out and very informative. Thank you for doing this.
Ok my spelling sucks. Tuned not turned. Cheers
Thanks for the comments Paul, that is great to read
No problem, mine is even worse
I used to have little knowledge of DCOE's and was unsure how to set them up properly. I've seen this video 3 times and others of yours, over a 4 month period and now I'm able to jet and tune them with success. I solved my hanging high idle problem when hot, by loosening the triple carbs spindle nuts. Some were horribly tight and I replaced the old and weak internal return springs. That stopped the 1,800 rpm idle hang that couldn't be stopped with a throttle blip or stronger external springs. I also measured the float levels and all were at 4mm not 8.5mm.. That caused a rich idle that wasn't improved by leaner idle jets or mixture adjusting. Now that the float levels are down where they belong, the idle mixture screws allow me to achieve 13.5 to 1 AFR. That float level change then required me to richen the idle jets to eliminate the bog in progression to the main jets. I now have 900 rpm idle that is smooth and it revs quickly and there's no bogging. Thank you for all of your white board discussions which are far more valuable than just words and for sharing your experience.
Excellent video, the best I have seen and the most helpful in selecting Jets for the Weber carburetor.
Great tutorial! Thank you for taking the time. The whiteboard time was very helpful. Please keep the videos coming.
You got it!
that was very interesting ,and the first time I have a reasonable understanding of the Webber ,thank you
Glad it was helpful!
Hello Steve
Very interesting, soon 2C is good and I can't wait to see this carburetor work. Nice to listen to your explanations over a good cup of coffee! Thank you
Glad you enjoyed it
So much detail and knowledge in these videos, I love them! Keep it up!
Thanks, will do!
Apart from the great advice, I loved the small spider crawling over the head at the back corner. Its like he was the apprentice. Young Spider-Man
Thanks for the comments
The best video about Weber carbs! Thanks a lot for your job! Very clear and great explanations
Wow, thank you!
clear and above all practical demonstrated video
Thanks for the comments
This is the best video i have ever seen about carburator. You are fantastic A lot of work on the carburator and so on the video. A very good work ! Hello and thank tou very much from France.
Thank you very much!
This has been a great series Steve, for the experienced and novice alike. Really well explained in detail that's simple f or your viewers to absorb. Well done. PS on a 2 ltr pinto unit we would by choice use 45s for a pinto in a mid state of tune going up to 48scand 50s for full house units.
Awesome, thank you! Indeed 45's. In my case it was already fitted with the 40 a bit on the low side/ but with the richer main jets it might just work// will see how it will do on the road test. But first the distribution belt change, clutch and electronic ignition changes
Thank you, learnt so much this morning, great quality videos, look forward to your next, brill
Glad you enjoyed it
Great vid .. a very clear and in depth look at that carburetor.. I learned the hard way back in the day... 👍🏻👍🏻👍🏻
Glad it helped
Great! Thank you for the time and effort you put in this. It really helped me out!
You're very welcome!
I thought I knew a bit about carbs but I was so wrong. Learnt so much, thank you for taking the time to make this video.
Glad it was helpful!
The drawings help a lot. Nothing boring at all. I just completed my base tune which made it richer and the pinging was still there. After your description on fuel delivery, I bought a new fuel pump. It went from 33L/hr to 53L/hr and the pinging has stopped. 👍👍👍 and drive's pretty good.
Glad I could help
Sublimely clear. Great explanation, as usual. Thanks!
You're very welcome!
I have a single side weber 40 series card and intake for ford pinto 2.0 motor.i enjoy the knowledge gained from your show
Thanks for the comments
Lots of information in this video. Thanks for sharing!
My pleasure
Your videos are fantastic. Thank you so much!
You're very welcome!
Superb piece of description and rebuild, very much enjoyed
Glad you enjoyed it
Never seen anybody that can explain like you, thx
Another outstanding installment. Thanks.
Thank you for your video which has fascinated me above all for its exhaustive explanation. a greeting from Sicily stay safe
Glad it was helpful!
Very educational video, thank you for creating and sharing it!
I always thought that it was choke x 4 to find the main jet. Thanks again for your fantástic videos.
Thanks for watching!
@@D3Sshooter is that the correct fórmula?? x 0.05 and the x 0.75?
I have 34 Chokes and 130 mains
Very good, concise explanations. Once again you have done a very practical and educational video. Kudos to you. Regards, Solomon
Many thanks!
Indeed thank you for the information you provide and mostly the story with it.
Greetings from Holland.
Thanks for watching!
This really inspires me to want to build a set of 40s for my B6ZE Miata. Having that old british sports car style with a set up suspension would be so much fun. If only it used a distributor and not a cam angle sensor...more math.
Thanks for the incredible video!
TXS for the comments
The best video i ever seen, about side draft webers
Thank you
Thanks for the comments
Wow, best Weber video I’ve ever watched! Subscribed! 👍
Welcome aboard!
Thank you so much for the series! I have a Weber 32 DFT, that drips some fuel in idle from the auxiliary venturi in the second barrel. Some "mechanics" have messed it up completely, so l'll try to readjust the float and the butterfly idle position to try and bring it in order.
Yep , some really do more damage then good . Good luck
Every mechanic that sees my Lotus Elan with twin DCOE's wants to mess with them. I think it runs fine.
Very helpful info for setting up my IDF.
Great video man, super useful! I am now in process of restoring a car and picked up a repalcement engine yesterday and my wish was to go dual webers but was unsure about it since I don't know about carbs but this is very very helpful! Steve, this is awesome! Please keep up :)
Thanks for the comments
Extremely helpful & informative, thank you so much for putting these videos together. It’s a big help! Also very funny at the end lol
Thank you
Hi Steve, great video! Due to your video I learned a lot, thank you!!! I bought a set DCOE 40's from a guy that used them on a Nissan Sunny 1300. I am planning to put them in a DAF 66 with 1400cc engine from Volvo 340 and Renault 5 Alpine cilinder head. I will use the DAF for fast road and nice weather sunday drives. The DCOE's now have the following base setup; 32mm main venturi's, 4.5 secundary venturi's. My main jets are 1.35, F34 emulsion tubes, 2.10 air reduction jets. The idle jets are 55F17's. Injection jets 35's, bleed/return valve 60 and 150 needle valve. So I think the base setup is quite off. Will search for the right parts for a proper base setup. Again, thanks a lot and keep up the great video’s! Vriendelijke groet uit Nederland:)
Thanks for the comments, and happy to see that it helped you out... that is an interesting mix DAF66 with a Volvo engine and a R5A head . yes that seems to be a bit off
Excellent explanations, thank you.
Thank you Steve!!! You are doing a great job! I am running a Mazda MX5 1.6 with 45dcoe Italian webers and really enjoying your videos. I have already made a tuning change to mine and it's improved them greatly! One thing I did do was install a wideband o2 sensor and gauge as I have no access to a dyno. I recommend this a tuning tool. You can monitor the air/fuel ratio on the run. Thanks again for you videos. Cheers from Australia.
Sounds great John, and indeed a wideband O2 sensor and analyser is a great tool to have. Especially if it an log all your data ( ECU and NOX) while taking that test ride. a 45 , wow that is large for a 1600... , but maybe you have a smaller venturi ? What is your prime venturi ?
@@D3Sshooter hi steve, and thanks for the reply, yes I figured they are a large carb for the size engine. I bought them second hand sight un seen from a guy who assured me they were properly set up for his 1.6 mx5. Turns out they were a very base set up and I'm lucky enough to be doing the fine tuning. The main chokes are 32mm.
Well done , very thorough and precise. Cheers
Thank you kindly!
I gave up on my weber, I jetted it 7 ways to Sunday. Nothing would clean up the rich exhaust smell. Just finished
Installing a Holley super sniper
EFI, Wow!!!! What a difference
Indeed EFI works nice
Fantástic!!!! Cheers from Portugal!
Thank you! Cheers!
Thank you for the great and very detailed video. We hope to use a Weber carb on a SAAB V4 engine (Ford Cologn) In our 1973 Model 96. Excellent and well done!
Glad it was helpful! Was type are you planning to use ?
@@D3Sshooter Really dont know. First I need to locate a suitable intake manifold for the V4 that will accept a Weber two barrel. Engine doesnt make very much horsepower and we are hoping to make the car a bit quicker
Another great video!
Thank you D3Shooter !
You opened a new world of knowledge for me right now, and I am sure, many if not all, who are here, got many questions (that were retriggered even in food related issues by the word "carb"), clearly answered.
Would you consider becoming my uncle ? Hahahaha xD
All the very best, and a big thank you again !
Thanks for the comments, an uncle sure
Great video,very informative.
Glad it was helpful!
Again a very interesting explanation. Well structured and ... loud and clear!
I understand now why our Alfa GTA was not tuned very well the time that we raced that car in Zolder.
We were much younger then, and the word "Internet" had to be invented, so ... D3Sshooter was not available that time!
By the way: you are able to write left and right handed! :-) Wow!
Haha Jan , indeed we were much younger and information was hard to get. Webers were like black magic and only few had the know how... Zolder, I have been there for some track days... Are still in the race arena ?
Beste Stephane, of Steve, ergens heb ik het gevoel dat we mekaar ooit al eens het pad gekruist hebben. Echt racen doe ik niet meer, maar ik heb nog altijd mijn R1 full in de garage staan. Met helm op zie je mijn grijze haren niet, en bij een initiatie met de Motorschool in Zolder ben ik de eerste bocht naar links volledig met mijn vingertoppen over de grond gereden! Dat zijn "Big Bang"-emoties hoor!
Ik heb een mail-adres waar ik je kan bereiken. Geef op dit bericht een duim, en ik passeer je dan wat meer info over mezelf, over Zolder, en nog andere dingen!
Blijf aub intussen verder doen met jouw instructie-video's. Ik hou bijna meer van jouw manier van lesgeven, dan de les zelf! :-)
Keep doing what you're doing please. :) Amazingly insightful, and great to listen to.
Thanks, will do!
@@D3Sshooter I'm actually in the midst of tuning my 1974 BMW 2002ti with DCOE40's, so watching this as a bit of a Theory refresher was great! I can't wait till you get into the 'tuning' aspect. Right now I'm chasing how to get from a very ideal progression, over a lean-gap into the mains, and it's proving rather frustrating without adopting an overly rich idle jet.... I'm now at the point where I'm playing with float height to hopefully help close that gap, being unable to source any size Aux's than the 4.5's I have my hands on.... gone down from 8mm, to 7.5, and tomorrow, I'll try 7 flat....
Very methodical video, excellent
Glad you liked it!
Very informative presentation ,thank you very much.
You are welcome!
Gotta say I’m jealous of your knowledge. All this stuff is becoming a lost art and trying to do this now with only the internet as a resource is shooting in the dark with a little bit of light. To many ppl without the right info acting like they know it like you do. Thank you for doing this video series!!! I just wish more people did in depth videos like you rather than the crappy useless videos out there. Thank you again, and if you’ve got a website I’d love to touch base with you about doing a blow through triple 45dcoe.
Great video. Thanks! Your whiteboard and discussion was NOT too much.
Glad you liked it!
Excellent video!
Thank you very much!
Thank you so much for the lesson!!!
My pleasure!
You are the best i salute you sir.👍👍👍
Evening Steve. Hope your all keep safe and well? Love the wipe board drawing as it makes so much sense 👍🏻 How on earth did they design those carbs to work in the first place lol 😂 Covid-19 maybe a pain in the derrière but sat on the settee watching the master with a brew is just perfect 👍🏻 The verity of content of your channel is absolutely fantastic. So a big thank you Steve for putting the time and effort making these super videos. Take care until the next time cheers Stevie 😎🇬🇧
Hi stevie, I happy that you enjoyed it. The whiteboard has always been my pet tool. In the office, when we design new concepts I always use a large whiteboard.. Much better then Power point slides. That is something for managers not for engineers. Its my pleasure and the thank you's are actually for you as you are watching and commenting. Txs again
That graph works for me. Mine is a 1.3 4 cylinder engine which produces max power at 6800 rpm and has a main venturi size of 32mm on twin 40 Solex ADDHE's
Great
This is another amazing tutorial of yours! I admire you and all your work you do. Thank you very much for sharing.
I just have one thought - since you have golden hands to restore or build stuff, so I thought that maybe you can build an air tunnel, attach it to this carburetor and simulate the mixture flow like it would be produced when carburetor is mounted to engine? Of course it should mimic the stream generated by engine at certain RPMs. This would perfectly illustrate carburetor operation and real time behavior to butterfly opening or any adjustments. Well, it's just a thought though :)
Thanks for the comments, If I had more time I would do that
super!! i plan to change my carburator next year
All the best
love the drawings too!
Thank you! Cheers!
This is amazing, im pretty sure your a genius.
Thanks for the comments
Amazing video
Glad you think so!
Excellent video thankyou
Glad you enjoyed it
Great Video , keep save
Thanks, will do!
Should be known as the DCOE Godfather
Thanks for the comments
great video
Thanks for the visit
@@D3Sshooter I would love to see a follow up with practical jetting for the webers after AFR road test (similar to SU video). Not necessarily for your results but to see how you adjust jetting to AFR numbers. Very informative videos!
Superb