Unable to properly tune the MG's carburettors, I removed them for overhaul. Here is how I went about repairing and overhauling them. Part two will detail the re-fitting and tuning.
I am in the process of doing the same to my Spitfire HS4 carbs and you have just made my life so much easier. As someone who is not a mechanic you may have no idea how hard for me to know which bolts to undo, how the levers work and how everything should fit. Also so good to know which degreaser to use, the fact there is a centre of tool for the needle and an SU adjustment kit. Thanks so much for making this.
Glad to be able to help someone! Best way to learn is just having a go. Best advice I can give is to just take your time, SU's are a simple device but as with all carburettors, attention to detail is the key. Enjoy, very satisfying job to complete.
Nice to see a tutorial that is thorough and detailed. I have a set of HS4 carbs and only slight differences probably due to the age as mine are '71. My jet needles are protruding out the bottom farther and are spring loaded and not rigid/fixed, but I found your video very helpful.
I checked on Amazon and this book is very rare. It sells for $847.00 for a new copy so you have quite a valuable book. Thank your friend for it...cheers....Sandy
very detailed and informative, I learned from this video. One suggestion, Have lighting source come from same direction as camera angle. It was difficult to see the area of work with light source across the bench. Thank you.
Used the gunson colour tune on my landy the other day to set up the su. Would highly recommend it ! 14mm one . Very precise and positive way of setting up mixtures 👍
They are good, my SU book recommends using one too. I have used one myself but to be honest I've always just got the initial set up and then tuned during road testing. I'll set the carburetors up on the "B" with it warmed up on the drive, but fully expect that I'll be doing the fine tuning after a good drive.
Not about this video,but could I ask if you use an adaptive in your stationary engines petrol,I have a lister junior,enjoy your posts and your enthusiasm. Thanks
No I don't run additives with the stationary engines, totally pointless. When leaded fuel was phased out, tests were conducted using Mini's as the A series is prone to detonation and valve seat issues. Those cars were driven flat out over several days and the engines stripped to see how they had fared. In a real world situation, it's going to take a very, very long time to ever become a problem. Realistically, I needn't run additive in either of my classics although I do, mainly for the claimed ethanol protection. Certainly not required by a stationary engine.
The float chamber will be vertical when fitted to the car, but the carburetor body slopes up slightly - I'll set the float chamber vertical and lock the bolt once they are on the car.
I am in the process of doing the same to my Spitfire HS4 carbs and you have just made my life so much easier. As someone who is not a mechanic you may have no idea how hard for me to know which bolts to undo, how the levers work and how everything should fit. Also so good to know which degreaser to use, the fact there is a centre of tool for the needle and an SU adjustment kit. Thanks so much for making this.
Glad to be able to help someone! Best way to learn is just having a go. Best advice I can give is to just take your time, SU's are a simple device but as with all carburettors, attention to detail is the key. Enjoy, very satisfying job to complete.
Nice to see a tutorial that is thorough and detailed. I have a set of HS4 carbs and only slight differences probably due to the age as mine are '71. My jet needles are protruding out the bottom farther and are spring loaded and not rigid/fixed, but I found your video very helpful.
Thanks for sharing in so much detail. Really interesting. Looking forward to seeing the refit and how it runs!
What a great video. Love the attention to detail without laboring on the obvious. Look forward to watching more for my 67 mgb.
I checked on Amazon and this book is very rare. It sells for $847.00 for a new copy so you have quite a valuable book. Thank your friend for it...cheers....Sandy
Thanks, but the book is quite common here - you often see silly prices where something is out of stock, but the seller wants to keep the listing.
Just about to do this job on my Mini and so glad I found this video. Not many go in to this level of detail. Thanks very much
That was all the information I was looking for
very detailed and informative, I learned from this video. One suggestion, Have lighting source come from same direction as camera angle. It was difficult to see the area of work with light source across the bench. Thank you.
Great job. Thanks so much. I wish I had the equipment to accurately drill the bushes out, hand hone is the best I can do.
Used the gunson colour tune on my landy the other day to set up the su. Would highly recommend it ! 14mm one . Very precise and positive way of setting up mixtures 👍
They are good, my SU book recommends using one too. I have used one myself but to be honest I've always just got the initial set up and then tuned during road testing. I'll set the carburetors up on the "B" with it warmed up on the drive, but fully expect that I'll be doing the fine tuning after a good drive.
@@steamwally I would love to see a video of that process mate.
As always, a very well done detailed video. A pleasure to watch with the morning coffee.
Brilliant many thanks for that.👍
Thanks for an informative video, it helped me out a whole lot
Brilliaint thanks. Excellent
Wonderfull work.
Excellent very informative as ever. Like the Wiltshire cup Crofton on it ? All the best
Thanks, Crofton is on there - I must pay a visit to the engines some time soon. My favorite part of the world, half my folks live down there.
@@steamwally It has to be doesn't it. Pleased you like it down here.
Hi do you do carburettor overhauls for customers?
Not about this video,but could I ask if you use an adaptive in your stationary engines petrol,I have a lister junior,enjoy your posts and your enthusiasm. Thanks
No I don't run additives with the stationary engines, totally pointless. When leaded fuel was phased out, tests were conducted using Mini's as the A series is prone to detonation and valve seat issues. Those cars were driven flat out over several days and the engines stripped to see how they had fared. In a real world situation, it's going to take a very, very long time to ever become a problem. Realistically, I needn't run additive in either of my classics although I do, mainly for the claimed ethanol protection. Certainly not required by a stationary engine.
What type HS4 carbs are these? I'm assuming they are the AUD but what number? Thanks in advance. 👍
What milling machine do you have? Looks a handy size.
It's a Warco WM12, we'll take a look at it in part two. Very handy machine and complements the Myford well.
Is that the final angle of the dangle of the float bowl, or adjusted vertical when fitted to the car.
The float chamber will be vertical when fitted to the car, but the carburetor body slopes up slightly - I'll set the float chamber vertical and lock the bolt once they are on the car.
Having bolted the carburettors onto the car - the float chambers were already in the correct position, so yes, in answer to your question.
@@steamwally 👍