How to Balance & Tune Twin Weber DCOE Carburetors | Tech Tip 18

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The Weber DCOE - Quite an intimidating setup if you're new to carburetors. Mixture Screws, Balance Screws, Idle Screws, it can all be a bit overwhelming if you're not familiar with these carbs. But fear not, I'm here to de-mystify some of the mystery, & hopefully give you the confidence to grab a screwdriver and have go. In this guide we'll look at how to dial in some baseline settings, then tune the carbs at idle.
This process should get you up and running regardless of engine or tune providing your jetting is in the right ball park. If you need help in that department, check out this article by Dave Andrews:
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The Engine in this video is a Modified 2.0 Pinto (SOHC) Engine out of my 1978 Ford Capri. For more Information, Tech, & Maintenance Tips on this classic 4 - banger, check out this playlist: • Ford Pinto (SOHC) Engi...
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4 янв 2020

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Комментарии : 379

@FastRust 4 года назад

Check out my latest video on how to tune the mechanical advance curve in a distributor: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-gkMLNRARGUE.html

@spdrcrj 3 года назад

Mate, just bought an Alfa GTV 2000 with these carbs. This is my first car with carbs and your video is, and there’s no other word for it, perfect. Step by step, photos, and demo. Thanks you so much for posting. 🙏🏻

@FastRust 3 года назад

This makes my day ha. Cheers. Glad it helped you out, and welcome to carb life!

@novalutiongsi1435 6 часов назад

Wish I had found this video before I attempted to get my Nova started. It runs... but it so needs all putting back base settings and starting again. Thanks for the video. 👍

@boldbeliever52 11 месяцев назад

This is an excellent teaching video. I have tons of domestic carb experience and ZERO weber experience. You cant imagine how helpful this has been THANK YOU

@martinrodgers6114 4 года назад

Best description of this process that I have come across. Thanks.

@FastRust 4 года назад

Cheers John

@leonardmerci2070 3 года назад

Thank you so much. You just saved me from pulling out the little hair I have left. I am so happy I found your video. Now off to purchase shorter trumpets because I can't get inside one that's too close to the strut tower. Thanks again

@autoaddict7481 3 года назад

Great video thanks mate. Alot of people think carbs are difficult, but as you have shown, it's a process ans if you follow it step by step most people can do it.

@FastRust 3 года назад

It is just that. And the more you do it the easier it becomes. Cheers.

@TheCornishGingerOfficial 2 года назад

Completely agree, all I hear online is "I wouldn't do that unless you know what you're doing" how do you learn if you dont try it? 😂

@patrickmcbrearty2621 4 года назад

Man, what great timing on this video, Im currently setting my twins on my 2.0 pinto. Props to you. Happy New Year😁

@FastRust 4 года назад

I got your back 😁 Happy New Year. Hope install goes smoothly.

@markwhitaker3673 4 года назад

What a great video-explaining in 15 minutes what took me a long time to figure out-thank you.

@FastRust 4 года назад

Thanks mark. Took me longer than 15 mins to figure it out too!

@Baggerdaddy702 4 года назад

Man this is the best tuning video!! I’ve been messing with my Weber 40s for the last three days. Been doing it wrong this whole time until I seen this video I’m back on the road now! Thanx

@FastRust 4 года назад

No problem my good man. Thanks for the positive feedback 👍

@jeffbergen7356 4 года назад

I've been wanting a video like this for years. Good work and thank you!

@FastRust 4 года назад

Thanks Jeff

@jfaz 4 года назад

Thank you for this great crash course - highly informative and to the point!

@FastRust 4 года назад

Great to hear. Thankyou!

@FKGZ19 2 года назад

This is the best video about carburetor adjustment there is out there. Great job !!!

@FastRust 2 года назад

Many thanks!

@joshfoley8862 4 года назад

I've swapped from a dual barrel holley on my 2.2 4 cylinder to dual DCOE 45's. I'm quite excited. Your video took a lot of mystery out of tuning these carbs. Thank you!

@FastRust 4 года назад

Thanks, glad to be of service. You can't beat twin webers 👍

@andrewcordery6157 3 года назад

Used this today setting up a brand new pair of 40dcoe on a x-flow, worked perfectly after 30mins of fettling, this video was really easy to follow

@FastRust 3 года назад

Great news Andrew. Thanks for the comment

@charliegrech5598 2 месяца назад

Such a good video. Clear, methodical and so simple to follow. Thank you. 😊

@michaelwhiting550 Год назад

Helped get my 85 Honda Prelude up and running great with your video. Thanks!!!

@Boele390 10 месяцев назад

Great video! I've done this before but i didn't knew the process steps anymore. Thanks for this!

@remydubois6437 3 года назад

Tanks for the video, gave me the confidence to tune my single Webber in the Mgb. Although my carb is slightly different to yours, I had your video playing as a guide while I was doing it. Thank you again from a newbie car enthusiast!

@FastRust 3 года назад

No problem Remy. Glad you found it helpful. Classic cars are a great starting point for enthusiasts. Much more user friendly!

@jacklee2577 4 года назад

This is exactly what I needed to see, thank you for doing this

@FastRust 4 года назад

No prob. Thanks 👍

@skipsrallycar 3 года назад

Brilliant video. I’m about to upgrade from 40’s to 45’s on my Pug. As they’re new 45’s I’ve been wondering about setting them up pre-start. I was over the moon to here you start with what to do if you have new carbs, no-one seems to cover that so I’m very thankful and will be visiting this video again when I come to do that. Thanks.

@FastRust 3 года назад

Thanks Skip glad you enjoyed the vid. Let me know how you get on with the 45s.

@skipsrallycar 3 года назад

@@FastRust No worries, all dialled in I just have to get the rest finished and I;ll let you know.

@kine8433 4 года назад

Welcome back! Fantastic video! Your videos make my life much easier ;)

@FastRust 4 года назад

Thanks mate. Glad to hear it.

@steveirving2449 3 года назад

Great video, barely touched carbs in my life, watched it and got then set up at idle in an hour. Its enough to get me to my MOT, till I can get them set up properly!

@FastRust 3 года назад

Great to hear it helped you get up and running! I would always recommend getting them set up properly on a rolling road. But once it's done you can keep them in good fettle using the tips in this vid.

@chrishull9983 Месяц назад

Thankyou - a well presented and easy to follow procedure - the only one to be honest I have found, and I have been looking for ages. I am actually running Dellorto 45's but I believe the process is common to both. .

@ricardorodrigues1003 4 года назад

Ohhh man.... I have a bmw 2002 with Schrick 292 cam, 4 2 1 headers, electronic ignition, 5 speed... It's a blast... With 40 Webers.... I never have seen such a helping video like this.... Congratulations!!!!

@FastRust 4 года назад

thanks Ricardo! Nice car. Enjoy.

@discogodfather22 4 года назад

Man, thanks so much! I am just about to get my Jensen Healey with a Lotus 907 twincam up and running after nearly 12 years sitting. I opened the top of the Webers (it has two DCOE 45's) and found it didn't have a any jets. Lucky I found my old box of jets and tubes and chokes and a little cheat sheet for the setup. Hopefully things will go well! Thanks for the in depth process and I will be following it to the tee.

@FastRust 4 года назад

No problems Chris, if there's a Lotus Twin Cam getting fired up off the back of this video that's all the thanks I need! Lovely engine mate. Good luck with it 👍

@fransterhorst3694 4 года назад

Cheers for sharing this knowledge! I needed to see this as i am new to this type of carb and want to get it ready for the dyno. now i can! happy days.

@FastRust 4 года назад

Thanks Frans. Good luck!

@craigturner4504 5 месяцев назад

Great content. Help me lots to set up my carbs

@aerobatics66 4 года назад

Very good explanation for the carb tuning! Thanks!

@FastRust 4 года назад

No prob. Thanks for the feedback.

@martinparker9249 Год назад

What an excellent video ....very straight to the point !

@FastRust Год назад

Thanks Martin!

@DKaraffa 3 года назад

Thank You So Much!! This is an awesome video. Cheers brother from the USA!

@FastRust 3 года назад

Thanks mate. Glad you enjoyed it!

@m3ight102 Год назад

Thank you for this tutorial ! now i can tune my sierra's 45 dcoe carbs properly 😊

@Robbo2498 3 года назад

Awesome video, thank you very much! I've got the same setup with 45s and the same throttle linkage on my L18 in a 720 datsun. Definitely helped me a lot!

@FastRust 3 года назад

Do love a Datsun. Glad the video helped. Thanks!

@johnblackmore4772 6 месяцев назад

Brilliant vid I'm looking forward to adjusting the carbs on my fisher fury 1600 fiat twin cam. Great instructions and makes it seem less daunting

@kjetilros 3 года назад

Best video ever on this subject. Thank you sir. Will be easier to get my escort running better.

@FastRust 3 года назад

Thankyou! Appreciate the positive feedback 👍

@blakeperkins8717 4 года назад

Brilliant video! Worth noting for anyone wondering, 40s do not have the air bleed screws, just in case anyone is having a panic trying yo find them on their 40s

@FastRust 4 года назад

Thanks mate. Good tip. Wasn't aware of that!

@slushbubbles 3 года назад

Really helped me tune the webers on my EE80 Corolla. Cheers! 😁

@FastRust 3 года назад

No prob. Thanks!

@Jupiter__001_ 3 года назад

Nice.

@694069406940 3 года назад

thy sound so good i love the sound of them better then a turbo

@FastRust 3 года назад

Agree! It never gets old.

@andrewb3497 3 года назад

A very good video on the various areas that make up getting a good tune. One of the few videos I have seen that explains the importance of positioning the throttle plates to the first progression hole at idle. I would add that the plate edge should completely cover/block the first progression hole (as per the Weber Tuning Manual). Once this is done you should NOT have to touch the idle speed screw again, any further idle adjustments should be done via the idle mixture screws and / or changing the idle jet. Moving the idle speed screw such that the throttle plate moves forward or behind the first progression hole will either result in a hesitation on acceleration or issues with getting you idle mixture correct.

@FastRust 3 года назад

Thanks Andrew. Did not know the tip about the progression hole to baseline the idle - learn something new every day! Will try this technique next time. Cheers.

@andrewb3497 3 года назад

@@FastRust No problems, it is in an old Weber Tuning manual, page 42. As you have it set @4:32 mins you may experience a slight flat spot as soon as you start depressing the throttle as the mixture will lean out before the first progression hole comes on line.

@laurentiuprisacariu9905 Год назад

exactly what I needed. i love you. thanks a lot. I am a beginner who bought a 68 Alfa GT and the car has been running very lean and down on power, on a 2000 km trip :D

@FastRust Год назад

Nice one. They are fussy carbs so constantly need a tweak to keep them running tip top, but once you know how it's dead easy

@BillyBeatbox_BdaBX 3 года назад

Thank you for your explain, i dont use this kind of carb, but the way you explain how to setting is great!

@FastRust 3 года назад

Thanks very much. Tried to make it as clear as possible.

@BillyBeatbox_BdaBX 3 года назад

@@FastRust crystal clear 😊🙏🏼

@chrisclelland2783 2 года назад

Just got an air meter and been meaning to set up my carbs for ages great video very clear and concise. Although mine are Dellorto DLHA's the principle should be the same.

@FastRust 2 года назад

Thanks Chris. Yep principle the same for the Dellortos just the location of stuff is slightly different. Good luck 👍🏻

@martinnielsen3592 3 года назад

You make it look so simple, thx m8

@FastRust 3 года назад

👍 no prob.

@fatoldguy-mh1rt 20 дней назад

Thank you for clear and articulate information. Great sounding car. Bitchin ' burn out.

@peterpowder8546 Год назад

It took me over a year, perhaps a year and a half to get my DDDCO is properly set up for my hot TR six motor. Armed with a couple of the premier books on the subject and hundreds of dollars worth of Venturi‘s main jet, idle jets emulsion tubes pump springs and jets, etc. etc. I was able to get my Weber’s to perform like fuel injection! Best carburetor, hands-down for European sports cars

@NeiroAtOpelCC 4 года назад

Excellent instructions. Once I have a new valve cover gasket I'll try to see if I can follow them.

@FastRust 4 года назад

Thanks. & good luck!

@j.meloen8339 4 года назад

Excellent tutorial! Thanks

@FastRust 4 года назад

👍 glad you liked it.

@isaacrivera4733 4 года назад

Awesome job explaining.

@FastRust 4 года назад

Thankyou!

@BryceW202 4 года назад

Outstanding video!

@FastRust 4 года назад

Thanks Bryce. I'll take that kind of feedback all day long!

@marn8136 2 года назад

Excellent video.

@laurieclarke3438 4 года назад

Great video! Your a star! Massive help!

@FastRust 4 года назад

Cheers Laurie 👍

@dumptonpark Год назад

Thanks for posting this card tune video done me a right favour. 🍰☕

@clutchkicker392ison5 2 года назад

Brilliant, i had teachers not explain it so well. Cheers

@FastRust 2 года назад

Thanks. Glad you enjoyed it!

@Mk7adxm 4 года назад

Great video man, I’m going to be getting a Weber 32/36 carb for my Ford Capri 1.6 Laser 😃

@FastRust 4 года назад

Cheers. Great carb that. In a lot of ways I think it's better than the 38DGAS.

@alrobins6283 3 года назад

really useful video - Im off to give it a go on mine now.... thanks for sharing

@FastRust 3 года назад

Glad it helped. Good luck.

@eilirthomas 4 года назад

Cracking video! Helped out alot!!

@FastRust 4 года назад

Thanks! Great to hear

@alexo1226 4 года назад

Great !! Great !! Video thx for taking your time giving us solid information about Weber carb set up ..💥👍🏻💥👍🏻

@FastRust 4 года назад

Thanks! Always good to hear that kind of feedback. Glad you enjoyed the video!

@alexo1226 4 года назад

@@FastRust did you ever had fajs carburetor ? If yes what you think about this company .thx

@FastRust 4 года назад

Heard of them yes, but have never used them, or known any one that has - so it's probably unfair of me to comment. However, the old adage 'you get what you pay for' springs to mind!

@alexo1226 4 года назад

@@FastRust thx :)

@LessTimeThanYouThink 4 года назад

Brilliant. Great tutorial.

@FastRust 4 года назад

Thankyou!

@dougscustomcargarage3434 4 года назад

Great info thanks Keep the show going

@FastRust 4 года назад

Will do, cheers 👍

@natjes6017 2 года назад

Great informative video, instant Sub!

@FastRust 2 года назад

Cheers mate, thankyou 👍🏻

@billywhizz98 4 года назад

Great video very informative

@FastRust 4 года назад

Thanks 👍

@canadajimmy 4 года назад

Great video. Very useful

@FastRust 4 года назад

👍 thanks!

@petermanibusan637 3 года назад

Awesome video it worked out good for me. Thank you 🤙🏽

@FastRust 2 года назад

Good to hear. Thanks.

@joppejoppsson9604 4 года назад

Good video. I use to start at 2 turns on the fuel mixture screw. But I have a slightly bigger cam. But the engine starts a little easier then.

@FastRust 4 года назад

Thanks! Yes fair point. 1.25 turns may be a little weak for some setups but I figured it was a good all round place to start from. Anywhere for there to 2 turns would probably be okay though.

@crispinimini 2 года назад

The best vídeobregulation of mix carburator

@FastRust 2 года назад

Thanks Carlos

@mellilore Год назад

My daily drive is a 1976 316 e21 (M10B16 engine). At the moment the car runs pretty fine on its own original Solex carburettor, but time for a major engine overhaul is coming and I'm planning to bore and stroke it up to M10B20 specifications and add twin Weber DCOE 40. I think your video will be very helpful then! Thank you!!!!!

@FastRust Год назад

Cheers mate. Great carbs good luck with the new setup

@tyredryder1342 4 года назад

Excellent, just saved me a heap of cash asking a tuner to help start up etc my 1965 Elan

@FastRust 4 года назад

Thanks mate. Nice car 👍

@rodrigoraposo127 Год назад

❤respect. Very good lesson

@kuvo1527 Год назад

Thank you, I will test on my Murena.

@JACKSPEED_TV 4 года назад

Nice mate, very well explained 👍 Just got mine back on and had a run out today.

@FastRust 4 года назад

Cheers mate. How's it running??

@JACKSPEED_TV 4 года назад

@@FastRust Yeah good mate, bit of popping low revs still.

@FastRust 4 года назад

We should do a head to head at Ric Woods!

@JACKSPEED_TV 4 года назад

@@FastRust Yeah man followed by drag race 😁

@FastRust 4 года назад

For slips?? 🤣

@panospapadimitriou3498 2 года назад

greetings from greece .. thanks for help.. finaly some idle and more balanced// soon will install a fuel regulator i bought and might jet em ( were in 2000 ascona ) .. twin 45s are a bit much for stock 1600cc but when gentle with pedal and some help from pneumatic twin phase distributor we have some chances!!! my setup is a 4ag stock bluetop with cast alluminium intake and ecu compeletely deleted!!! used medium stacks not long not short and 4/2/1 hand made headers !!!

@FastRust 2 года назад

Greetings! Welcome along. I've seen 45s on some pretty lairy 1600s up to now so you've every chance of it working. May have to play around with choke sizes a bit

@LittleMontecarlo 2 года назад

great job!

@FastRust 2 года назад

Thanks Marco

@surantharan1321 8 месяцев назад

Tqvm sir it's was so useful to me ❤

@chejlr 8 месяцев назад

This is great, i have 40 dcoe on my BMW 2002. They sound really raspy and loud. Im going to try this out. Ty.

@johnevans7389 3 года назад

Just used to use a tube in the inlet side of the carb, and listen to to the airflow. Old school.

@FastRust 3 года назад

That is old school. I asked the old boy at the rolling road to teach me how to do it, he just said 'buy one of these' (air flow meter) 🙄

@markbraham5439 3 года назад

Great video, thank you.

@FastRust 3 года назад

Cheers Mark

@barrysargent1213 3 года назад

It's easier to have a hand held tachometer for the mixture. Easier to see than hear on a hot engine. I also had color tune glass spark plugs, they made life way better and more accurate. Great video, reminds me of the old day's!

@FastRust 3 года назад

Cheers Barry. Yes multiple ways to skin a cat - this is just the way I've become used to doing it. Color Tune - I've heard mixed reviews about these things. Never tried myself but would like to purely out of curiosity!

@barrysargent1213 3 года назад

@@FastRust Those days I really.miss, buggerizing about with carbies and ignition timing on my absolutely full house Mk1 Cortina. That's one little car I still dream about driving. Best thing I ever got for her was a close ratio gearbox form Malcom Stuart out of one of his rally Escorts What an entertaining ride she was, fully dramatic Hard cornering with one front wheel in the air and sliding, most satisfying. I could go on and on about that old car. I like your car very much and she sounds great. Long live the old one's eh! Best drives on the planet today!!!

@FastRust 3 года назад

Amen. Simple tech but there's nothing quite like driving a classic ford. I was at Blyton Park with a friend of mine in his 14 plate fiesta st. Halfway through the day I told him to make a few laps in the Capri - they were the most entertaining laps he made all day. Enough said! Cortina sounds excellent 👌

@nwr390dbof36c 3 года назад

Thank you. So clear and without making a performance.

@FastRust 3 года назад

Cheers Neil!

@daw22936 4 года назад

Nice job.

@FastRust 4 года назад

Thanks.

@BahnstormerUK 4 года назад

Good vid. Many thanks.

@FastRust 4 года назад

Thanks mate. No prob.

@zascars Год назад

Brilliant thanks

@skibumwannabe5492 4 года назад

Good vid cheers mate.

@FastRust 4 года назад

Cheers 👍

@martinn3281 4 года назад

good information great

@steelmetalbolt7286 11 месяцев назад

thank you bro

@davidverhaegen1618 3 года назад

Thanks !!!!!

@SH0winghackers 2 года назад

Hey man great video! I have a question. I have three dcoe carberators. But on the 2nd to 4th cilinder the air doesnt change when we adjust the balance screw. Two years ago a specialist set them up, but now they need to be done again but we cant seem to change the air balance

@johnblackmore4772 Месяц назад

Just bought a fuel pressure regulator to go in before I tune the carbs. Should I set this to what you recommended? I have a fiat 1600 twin cam engine in my sylva fury

@Nskawtea1 Год назад

Thank you! I didn't want to watch it it thru the whole thing but the problem is my brother was gonna sell his AE86 with 4AGE Silver Top with twin Weber 45 DCOE 13 and I don't want that xD it ain't my car but he always wanted one but wanting to sell it because he didn't know carbs. I'm just throwing in the towel and said, "Hey, I'll tune it" xD haha again, thank for the very informative video!

@FastRust Год назад

Thanks. This info should get you up and running. Good luck!

@Videoswithsoarin Год назад

on my carb setup one of my mixture screws only seems to increase idle no matter how far out much further past when the other 3 would begin to choke the engine. i am assuming this must be a sign of an air leak. i have tried spraying carb clean on the shaft seal on that carb but no effect to engine speed. is there anything else i could try? does it matter? i have gotten then engine to idle smoothly and drive quite well by simply matching this screw to the others (i just recently ordered a color tune plug to help me see exactly what is going on but it hasnt arrived yet) should i investigate further? thanks

@carforumwanker 3 года назад

excellent !

@FastRust 3 года назад

Thanks 👍

@craigmccarthy4144 27 дней назад

Hi just like to say brilliant video, I have a question on the top of your carbs you have what looks like a linkage, I don't have this could you give me some details, or perhaps do a video about it cheers Craig McC

@victorcorrea5028 4 года назад

👍l love this video perfec now i cant start to calibreat.

@FastRust 4 года назад

Thanks Victor. Good luck 👍

@OldHouseNut1 3 года назад

I am going to tackle this project on a 1961 Mercedes tomorrow. I thought this was a solid video, and I found it pretty easy to follow along with. EXCEPT it would really help to use much zoomed in photos the first time you are talking about one screw or another or something. The tiny view in the bottom corner was not nearly clear enough to see what you were adjusting.

@FastRust 3 года назад

Cheers Kevin. Appreciate the feedback. I'll make sure I get some proper close ups in future videos of this nature. I probably need to invest in some newer cameras. Currently using a Go Pro Hero 2 and a Galaxy S6. What can I say. I like old stuff 🤣

@claymunsamy 6 месяцев назад

Great video.what jetting are on your 45s

@acbusinesscontinuity327 3 года назад

Thank you - what an excellent vid and clear explanation. I am about to tackle the same job on my '72 Alfa for the first time and this will be really helpful. I was considering using a Gunson Colourtune for the idle mixture adjustment. Do you rate that as a device?

@FastRust 3 года назад

Personally I have no experience with the Colortune but have heard mixed things. Some people love them, some think they're useless! Not much help to you I know, sorry. Thanks for the feedback, glad you liked the vid and good luck setting up your carbs.

@israelrosario2896 2 года назад

Hi! I have a TOYOTA Corolla with a 1.8 engine. I need tune in my 45 side draft carburetors. They sneeze when accelerating , on the exhaust side #3 it's hotter compare with the others. What do you suggest to base line sett up ,then fine tunning. Thank you

@jockofthebushveld299 Месяц назад

Quick question I see a lot of Picture's of Webber Carburetors where the Trumpets have no Filters fitted as is the case on this One,doesn't this allow dirt and dust enter the Carburetors?and cause blockages to the Jets.

@Sierraman59 2 года назад

I ve got 2 engine to tune. 2.0 and 205 bloc. Wich one is the Best for twin carb ? Carb size is the best ? DCOE44 ? 45 ? Sorry for my poor english. Thx :)

@FastRust 2 года назад

Both equally good - the 205 block will stand higher RPMs as rods are stronger, and can be potentially bored to a 2.1 as cylinder walls are thicker so has a slight edge on the earlier blocks. However, power gains are all in the head on Pintos so to get the most out of twin carbs you need a performance head, decent cam and exhaust 👍🏻

@jaferessop4412 3 года назад

Thanks for this, great explanation I would like to know if this tuning process will work on a twin 38 dgas setup on an Essex v6??

@FastRust 3 года назад

Thanks, and yes. The fundamentals are the same. Obviously the location of the screws etc. will be different & you may need an adaptor for the air flow meter.

@garagetwentynine4023 Год назад

Awesome video, really helpful...one question however, my twin carbs are reading really high at 10, any reason for this and how do I bring it down 5....Datsun 1200 A12 engine. Cheers!

@FastRust Год назад

Don't worry about it. As long as idle is set correctly and they're balanced you're good