Thank you so much for this fantastic content! You are a born educator. I have just purchased my first classic car - a beautiful 1967 MGB GT - and I'm working hard to learn how to service and maintain it. Your videos are a goldmine of well-structured and well-communicated information and your willingness to share your expertise is helping me immensely on my journey.
@jeremysleeman9127
4 күн бұрын
Thank you so much for your videos. Very easy to understand. Always informative. Keep them coming. Mini owner UK
@bleizbreizh6264
10 ай бұрын
What an excellent series of videos, the best I have seen on the SU carb. and tuning of this type of classic engine. Thank you for making them. I can see that the good old colourtune might have advantages with a twin carb set up too. I have been looking round for ideas to reduce emissions on my old MG as I have been told that if I import it to where I now live that its yearly road tax will be directly related to the tested emissions output of the car as it will be regarded as a brand new car despite it being 70 years old! That air/fuel ratio gauge has really given me something to think about
@thinbits
Жыл бұрын
Just wanted to say this series has taught me a lot about the theory of tuning a carb and how an AFR gauge helps. I’ve never tuned anything before, and I’ve got a 67 Cobra replica with a 351 Windsor and carb I’m working on. Very different than the Mini, but the principles are the same. Feeling a lot more confident about the work ahead after watching these videos!
@SteveCrook
3 жыл бұрын
Excellent comprehensive explanation of SU Tuning options. Thank you.
@D3Sshooter
3 жыл бұрын
Glad you enjoyed it!
@shakeyjakecw
3 жыл бұрын
Thank you so much for your advice on the hif44, been pulling my hair out trying to get my mini to idle smooth, and with your advice on getting the jet flush first then turning mixture screw two turns clockwise, it worked fantastically, thank you so much 👍👍top bloke 👍
@D3Sshooter
3 жыл бұрын
Thanks for the comments
@severinoantonucci5580
3 жыл бұрын
Smashing video, best I've ever seen on the topic. Very plain and clear explanation. Oh and comprehensible speech. Thank you very much.
@D3Sshooter
3 жыл бұрын
You're very welcome
@michaelmenard8913
3 жыл бұрын
Without a doubt, the most well explained video I have ever watched. Very concise and interesting.
@D3Sshooter
3 жыл бұрын
Thanks for the comments
@michaelmenard8913
3 жыл бұрын
@@D3Sshooter how do i get stuck needle holder out of slide?
@karljay7473
2 жыл бұрын
Great videos and great looking car! I worked in a shop that remanufactured carbs back when I was in college. Did a lot of SUs, they are simple and very effective carbs once you know how to work on them. One other option for tuning is to get the O2 sensor. I have a predator carburetor on one of mine and I use an O2 sensor to dial it in.
@arsenavdalyan51
3 жыл бұрын
Right on time! I'm getting rid of banana Weber carb from my 1968 Volvo 122 and putting back a pair of SU HS6. Thanks a lot for the video
@D3Sshooter
3 жыл бұрын
Glad I could help!
@brianmac8260
2 жыл бұрын
Having some SU woes rebuilding a Rover 2200TC. Nice concise information here. Thank you.
@D3Sshooter
2 жыл бұрын
Glad it was helpful!
@PaulyDownUnder
2 жыл бұрын
Fantastic SU series from AEM meter install to this Part 2 tuning. Would have been good to see the plotting of the AFR graph again, comparing the initial data obtained with idle, 1st , 2nd , 3rd, 4th, cruise and WOT to what you have now. Thanks for sharing your knowledge and putting together the videos, i also really enjoy your teaching technique.
@D3Sshooter
2 жыл бұрын
thanks for the comments, and a good tip for a future video
@LezOU
2 жыл бұрын
Nice, I have the same AEM AFR sensor and gauge and mine fluctuates a LOT more. your tutorials are very good and very helpful !
@antoinemifsud4019
2 жыл бұрын
Good videos (I saw part 1 and 2) very informative and hands on stuff, my Morris Minor needs a tune up !!! Very well made sir
@travelinben1966
Жыл бұрын
Your clear explanations and demonstrations have given me the confidence I needed to start to learn all the nuances of SU carbs.Thank you very much.👏🏻👏🏻Subscribed.
@andymiddleditch3855
3 жыл бұрын
Very well made video, very informative and very useful.
@D3Sshooter
3 жыл бұрын
Glad it was helpful!
@jameshehir3334
3 жыл бұрын
Thanks for an excellent video on tuning a carburettor. I have now ordered my Colortune as it appears to be the most economical way of tuning the carburettor. I had not heard of such a device but I am very impressed with the technique. I presume it will work with two stroke engines such as my chainsaw and hedge trimmer. I wish you well for 2021. Keep up the good work. It's invaluable to very many DIY persons. James from Dublin
@D3Sshooter
3 жыл бұрын
Glad it was helpful!
@scottglover6100
3 жыл бұрын
Really enjoyed this series of videos. Thank you.
@D3Sshooter
3 жыл бұрын
Glad you like them!
@grayfool
3 жыл бұрын
Brilliant. Thanks very much again. Terrific work.
@D3Sshooter
3 жыл бұрын
Thank you too!
@ShaunCymruDS8
3 жыл бұрын
Very interesting. I have never heard of the colouttune method before. See through spark plugs.. now that’s a look :) Did you datalog after the changes to compare to how it was previously? It always amazes me the trouble you go to in order to share your knowledge, in this case going through 4 different methods and all for free on KZitem. Thanks again Steve.
@grayfool
3 жыл бұрын
Couloutune has been around for decades. It's a pretty cool way to set the mixture. And cheap.
@D3Sshooter
3 жыл бұрын
Thanks for the comments, indeed colortune has been around for a long time. I did do a log , and the changes were seriuos ( to the better).. Maybe I should have shown that .... Well I like cars, I like talking and I like to create video's... and to share and learn
@stewartpeterson9090
3 жыл бұрын
Really nicely done, much thanks. Will apply to my new (old) MGB race car.
@D3Sshooter
3 жыл бұрын
Good to hear, a MGB GT ???
@bshnabel
3 жыл бұрын
Excellent videos detailed and comprehensive, thank you
@D3Sshooter
3 жыл бұрын
You are welcome!
@jimmielmholt
3 жыл бұрын
Congratulation with the 30.000 subs. 👍
@D3Sshooter
3 жыл бұрын
Thank you very much!
@Mike-ys4sr2023
10 ай бұрын
I used the exhaust gas Analyzer for Emissions testing in Canada 🇨🇦 works great for Diagnostic purposes
@D3Sshooter
10 ай бұрын
TXS for the comments
@alannunn1089
5 ай бұрын
Great explanation. Your Engish is good too Thank you!!
@matisse9267
2 жыл бұрын
I recognise that bridge. It is at the edge of Oudenaarde and Kruisem ,pretty close to where I live. Wat een kleine wereld.
@D3Sshooter
2 жыл бұрын
Thanks for the comments, ja inderdaad... Ik woon in Oudenaade
@RobinTheMini
3 жыл бұрын
Thank you for a most useful video
@D3Sshooter
3 жыл бұрын
Glad it was helpful!
@johnmcauley3317
3 жыл бұрын
I am running out of paper taking notes. Thanks again!
@D3Sshooter
3 жыл бұрын
Perfect!
@bolti1000
2 жыл бұрын
Brilliant video many thanks
@MrJensdude
3 жыл бұрын
Really enjoying all the video's on the mini as I'm just finishing my 1330 build with a HIF44. Could you share the AFR datalog after the changes? That way I can see what it should look like. Thanks for the interesting and detailed videos/lessons!
@D3Sshooter
3 жыл бұрын
Thanks for the comments, I will need to take that again as I deleted that file. As soon as I get to it I will
@StevesMachines
2 жыл бұрын
Superb explanations 👍
@D3Sshooter
2 жыл бұрын
Thank you 🙂
@kaindog100
3 жыл бұрын
I’m in the process of doing this now. Thanks for the information.
@D3Sshooter
3 жыл бұрын
Best of luck!
@kennethtalbott2233
10 ай бұрын
some great info here. thanks.
@scottlucas4408
Жыл бұрын
Great video
@redbarchetta8782
Жыл бұрын
Interesting. I've been trying to get my MGB tuned running duel HIF4s and the idle has been around 11.9:1 to 12.4:1 but obviously rich on the plugs. I will have to see if raising it to 13:1 to 13.4:1 helps. My only concern is I am not running a stock engine but modified high compression with a cam. About 9.5:1 or 10:1. This video does help as I have the same AFR gauge. Thanks for the great info. :)
@D3Sshooter
Жыл бұрын
Thanks for the comments
@baioszisimos3367
3 жыл бұрын
Excellent waiting for those videos... please in all carburetors when screw clockwise the mixture became rich?
@D3Sshooter
3 жыл бұрын
yes
@brianparkinson1594
3 жыл бұрын
Excellent! Made to look straightforward when done in the right sequence. One question ... only necessary to add the air filter in the final test on the road, not during the carb set up procedure?
@D3Sshooter
3 жыл бұрын
No need at the carb prep stage, but for the idle AFR you can place it. I did not see a major change with and without. Of course that will depend on the filtertype itself ( how restrictive it is). For the road test , it must be inplace
@brianparkinson1594
3 жыл бұрын
OK, thanks for that!
@vortigen1
Жыл бұрын
Hi, this is an excellent series of videos, thank so much, I am learning heaps. I have bought the same AFR you have but my mini has twin 1 1/2 HS4’s, what method should I use set the idle mixture screws?
@minidoido1
Жыл бұрын
Great video. Very instructive. Did you get the plots after the tuning, to see the difference?
@billn5059
2 жыл бұрын
I have a 61' Metropolitan that has dual SU's on it and am looking at getting a Colortune to help adjust the carbs since it seems to be running rich, but have read on a couple of forums that ethanol fuel can have an effect on how well it works. Since I am in the US and we have ethanol fuel my question is have you seen issues with it. Thanks for your video's. They are really informative.
@johnclarke6542
3 жыл бұрын
Personal I found you can tune the carb needles with a file, if your serious about tuning A series engine, you will need a heated inlet manifold the su will start to ice over without one
@D3Sshooter
3 жыл бұрын
Yes indeed, Thanks for the comments
@deangaryjames
3 жыл бұрын
Excellent
@D3Sshooter
3 жыл бұрын
Thanks for the comments
@davidtomalty41
Жыл бұрын
Excellent video. If when tuning duel su carbs with these methods, is the use of an air balance gauge between the two carbs still needed ?
@KompressorPete
Жыл бұрын
Thanks! Fantastic videos. After having a lot of trouble and having my twin SU HIF 6’s removed many times I followed your basic tips and vrooom. My Rover SD1 3500 v8 started right up and super great. However: after a quite hard ride with 3-5.000 rpm and full throttle plus a lot of heat both carbs spit out fuel from the overflow pipes. Why? Both needle valves are new and floats adjusted 1 mm from bottom plane when upside/down. Any ideas? Best regards - Peter Lundorf Denmark
@hosrow
3 жыл бұрын
Fantastic video. You are awesome. I have a very close set up in the engine as yours, but my car does not sound nearly as smooth as yours. If I record it and send it to you, would you be able to tell me what may be the issue? I will order the needle and spring similar to what you did on this video and see the effect. I have very low power in 3, 4, 5th gear, so I may benefit from your changes. Here is my engine spec : * Head: KAD 12G940 ROAD100 CYLINDER HEAD * Cam: KAD100 Camshaft and single HIF44 * Carburetor: HIF44 BDK (current) * Lightweight flywheel * Pre verto clutch - performance clutch * 1275 Metro block bore to 1310 * 5 speed trans.
@D3Sshooter
3 жыл бұрын
Looks like a nice build...HIF 44 should be OK... just send it yes.... gears 3,4,5 create more load on the engine ( typical) and as a consequence the piston in the HIF should lift . two possibilities , 1 Damper oil not right or a spring that is to heavy... and potentially the needle type... Sure you have no vacuum leaks ?
@hosrow
3 жыл бұрын
@@D3Sshooter thank you for agreeing to receiveI a recording. How should I share it with you? Is there a way to attach to response to your KZitem video?
@jrhouckok
2 жыл бұрын
Great video. Any advice for high altitudes? I'm going on a rally in South America which gets up to 15,800 feet. I have a 1967 Volvo Amazon with twin SU HS6 carburetors, with KD needles. I currently live at 1200 feet altitude.
@D3Sshooter
2 жыл бұрын
As the air is less dense, you might need another needle ( thicker)
@Thereishope664
3 жыл бұрын
Thank you very informative, I have triple SU's so a bit more difficult. I don't really find the colortune very accurate, the colour tends to fluctuate and is a bit confusing.
@D3Sshooter
3 жыл бұрын
Thanks for the comments , yes it is a basic tool
@charlesv20
3 жыл бұрын
Another fabulous video! Keep on ;) How much afr do tou have on road with quick opening? What about going to a richer needle?
@D3Sshooter
3 жыл бұрын
Thanks for the comments, when pushing full open it drops to a 18:1 but quickly moves up to 12:1
@charlesv20
3 жыл бұрын
@@D3Sshooter , if we want to clean the 18:1 but the rest of the carburation is ok, what would be the solution : stronger spring? Is there an alternative needle? Or greater oil grade?
@phatlaz1974
Жыл бұрын
Thankyou
@classic1989mini
Жыл бұрын
The graph you shown with the needles on, is this a web site. Could you say which it is?
@rogerlittlejohn475
3 ай бұрын
What causes run on or diesel in?
@Scrubworks
3 жыл бұрын
I have a question, I have a matched pair of HS2 carbs that I'm thinking of rebuilding. They're off an MG 1100 originally (AUD 69), and the SU catalogue says the left hand carb is fitted with a 4.5 ounce spring, but the right hand carb only should have a 2.5 ounce spring. What's the reason for mismatching them like this?
@D3Sshooter
3 жыл бұрын
Thanks for the comments , to be honest I don't know . In fact that is very strange. What is the intake manifold like ? Springs are typical selected while driving the car and checking the performance as shown in one of the video's. Maybe engine has different compression at specific cylinders ( that could be , and they matched the springs for the best performance).
@Scrubworks
3 жыл бұрын
@@D3Sshooter The manifold is the stock MG one, it's a crossflow design that shares both intake runners via a tube joining them together. I think the reason might be to do with air filter design and flow into the carbs, as the carbs are off a transverse engine originally like in your Mini. I will be fitting them to a longitudinal engine (Morris Minor) so they'll have a lot more breathing room, so I'll probably put matching springs in.
@DavidUKesb
3 жыл бұрын
Many thanks for this as I am currently adjusting my carb on an ADO 16 Princess Vanden Plas. You mentioned the Colourtune changed colour during acceleration so should the correct colour reading be at idle or at higher revs? Cheers.
@D3Sshooter
3 жыл бұрын
Busem blue is at idle the correct color, acceleration needs to be lean to orange/yellow
@DavidUKesb
3 жыл бұрын
@@D3Sshooter So providing you have the correct colour at idle it's normal to change to orange/yellow with engine revs and doesn't mean the mixture is too rich at higher revs? Many thanks
@HSRacing29
3 жыл бұрын
Hi, thanks for very good videos. Where do you have the sensor for the AFR ? I have mine where the gearstick comes up. The manufacture say 66” from the head. My dial is all over the place. I cant get i så firm as you. My engine is total rebuilt, bore, valve etc.
@D3Sshooter
2 жыл бұрын
I have it just at the end where the pipes of the cylinders meet in the collection point ( so just after that)
@HSRacing29
2 жыл бұрын
@@D3Sshooter Thanks for the info, i will move the borsch 4.9 sensor to that position 👍. Your mini sounds and runs realy good 👍
@GTE_Channel
3 жыл бұрын
Well made, my compliments. Is your in car rev counter a little bit off? Idle rpm seems around 500?
@D3Sshooter
3 жыл бұрын
Thanks for the comments, yes it was, needed to restrap the dip switches in the back
@sebaSs0o
3 жыл бұрын
Very good information...I have a question, i have a Stromberg 175cd made in germany (it has a red cap) of my mercedes w123 of 1977, How can i remove the needle? i need remove it because it isn't vertical. I removed the side screw from the piston, and now i don't know what to do. So much thanks for your videos, greetings from Chile.
@cruiseoveride
3 жыл бұрын
In the video you say under load it would run richer. Why is that? 27:00 Would 2k rpm cruise in neutral be different from 2k rpm under load in terms of AFR?
@D3Sshooter
3 жыл бұрын
Under load , there is more vacuum as the engine is gasping for air, so the airspeed increases and so does the venturie effect. Yes it would be
@nexcode9608
3 жыл бұрын
Super erklärt!
@D3Sshooter
3 жыл бұрын
Danke
@hosrow
2 жыл бұрын
I was looking through your channel and have a question. Is there anything you can't do? 🙂 You are Man with many talents. Regarding tuning a hif44 carb, I am following your video to install a AFR Guage. Getting really frustrated with the tunning. I either get plugs with black soot or bone while, never the rusty reddish color. My question is do you recommend using petrol without ethanol for mini?
@D3Sshooter
2 жыл бұрын
If you can yes, ethanol is not a good thing at all
@paulhotson5820
3 жыл бұрын
Did you use the yellow spring in the end or back to the 4.5oz ? You could have used the red spring and used a thicker oil like 20w/50 in the dash pot. Very informative thank.
@D3Sshooter
3 жыл бұрын
Thanks for the comments, yes I did
@gerhardnowak3700
3 жыл бұрын
Please can you tell me where are you buying the Su Parts.
@D3Sshooter
3 жыл бұрын
In the UK Burlen..
@TerminalMeltd0wn
3 жыл бұрын
Very interesting video - is there much difference when it comes to tuning with an AFR with dcoe carbs?
@D3Sshooter
2 жыл бұрын
Its the same process... other tweaks
@AleksandarMiladinovic
3 жыл бұрын
Thank you very much for the excellent information. I just have a question, in one of the videos, I saw you placed O2 sensor at the end of the exhaust and measured the voltage with an oscilloscope. I know it was a narrowband O2, but I wonder if it is possible to use wideband at the end of the exhaust to tune the carburettor? I believe that the readings there are a little bit different, probably more O2.
@D3Sshooter
3 жыл бұрын
That is correct, there are rules for the placement of a Wideband sensor.. typical with a minimum of one foot away from the cylinder head, before and muffle. Its importend that the sensor get the real O2 values. The further away from the engine the larger the error becomes due to the O2. Besides the fact that you need a certian temperature. The measurement I did was only to show how these sensors work and the kind of signal they produce
@AleksandarMiladinovic
3 жыл бұрын
@@D3Sshooter Thank you!
@GTE_Channel
Жыл бұрын
I would think the oil in your damper is still to thin. Even standing still the mixture should richen with the opening of the throttle.
@D3Sshooter
Жыл бұрын
Oil is in my case ok... it all depends on the temp
@bobwgower
3 жыл бұрын
What were the AFR readings while cruising on the open road at constant throttle ? On the highway at speed for example.
@D3Sshooter
3 жыл бұрын
I have a 14.8. Of course that depends a bit on the speed and wind.
@Fabi999able
3 жыл бұрын
Hola. Necesito un consejo. Para mantener un régimen de aproximadamente 4000 rpm constante, ¿es conveniente un resorte mas pesado y corto o mas largo y blando. No entiendo lo del cambio de resorte.
@D3Sshooter
3 жыл бұрын
Thanks for the comments
@jonesboy2004
3 жыл бұрын
Great video. What is the richest so lowest AFR you see once happy with tune on WOT? Mine is 14ish on cruse but will drop to a low as 10 briefly on WOT before coming back to around 11.5 to 12 is this normal or do you think I need a weaker spring or needle? Thanks
@D3Sshooter
2 жыл бұрын
Looks good to me, very similar to mine
@vintage76vipergreenBeetle
3 жыл бұрын
👍
@rong.7768
2 жыл бұрын
Adjust your steering wheel, not straight... 😁
@D3Sshooter
2 жыл бұрын
Thanks for the comments
@MultiDopper
3 жыл бұрын
how to read spark plugs on a classic mini next xD
@D3Sshooter
3 жыл бұрын
Thanks for the comments, maybe next time
@jasontucher7011
3 жыл бұрын
Mr. Kelvin isn't taught in the U.S. highschools. To learn chemistry, you have to pay many thousands of dollars for university. What Americans know about science is pathetic. I hope we get universal education and healthcare soon. Thanks for showing the sparklætor, it was very cool.
@D3Sshooter
3 жыл бұрын
Thanks for the comments, I did not know that.... I was under the impression that this was basic...
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