SHED RACING - Hall Scott - Tweaking The Miller Carb Setup
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- Опубліковано 10 кві 2024
- Another busy week in the Shed finessing the Indianapolis car prior to the Goodwood Members' Meeting this weekend. Having fitted the single Miller carb set-up on the Hall Scott engine, John and Ivan devised a solution to prevent the carb icing on start-up. Plus they devised a solution for the two outermost cylinders running rich.
The artwork is thanks to Stefan Marjoram. stefanmarjoram.com/ - Авто та транспорт
Have a great weekend and thank you for joining the team Susie you are a wonderful addition and we all very much appreciate your valued insight.
There is an amount of jealousy that arrives with every video. Personally at 70 years old, i want to wear short trousers and a school cap and come and get in the way. This brings back so many fabulous memories of oily rag days, and problem solving on the fly. Credit to all concerned, and everything crossed here for success. Thank you guys n gals.
Ivan should be registered as a😢 national treasure 🙂👍
I'm a 56yr old mechanic in Australia.
I work in mining these days in the office, but I used to run my own rally cars and still do all my own work at home on my vehicles and dirt bikes.
I truly hope when I'm Ivan's age, I still share his passion and have his drive to succeed 🙂
Great to hear John explaining some of the mods!
Can not wait to see that young fella pull the whip at the Goodwood festival 👍👍🦘🇦🇺
every time i see the Hall & Scott i got to say how amazed how true to the style of the era it looks and how (forgive me) 2 old fella's in a shed created it i take my hat off to you Ivan and John you guys are very very cleaver , thanks for the filming Suzy and editing and Ivan too even though the first part we were having a close up of his mush lol
What a fantastic episode! It’s an honour to be included - thanks so much. My favourite bit was Ivan’s camerawork :) The best of luck at Goodwood.
That is my favourite part too !!
I'm just guessing here, but it seems to me like maybe Suzy is doing the ,in frame, text commentary, and I absolutely love it. Even a living legend like Ivan needs a friendly woman about to look at him and shake her head and say "You're quite mad, you know."
Thanks again for another wonderful video. I've been forced to do chores around our place and couldn't get out of it! Cheers Alberta
Great video, guys! John and Suzie's input are the perfect final touches on these videos. I really liked the artwork too!
Glad that it's all sorted and ready for Goodwood, good luck. John's a real miracle worker you couldn't have done it without him.
You might already have this trick in your toolkit but in case it helps - we used to put poly bushings in the freezer overnight to make them behave while skimming them in the lathe - could help shaping the red stuff... Love your work everybody !
From motor racing to the moon landing, the most important attribute is problem solving and the tenacity required to finish the job. Well done Shed Racing!
Brilliant patina work. Good luck kids. Peace, purpose, & pleasure.
Those socks look like the hamburglers socks .he was a caracter from burger king commercials here in america.hello from phoenix arizona.love the education you all provide,tell john thanx also.
McDonalds in the 80's, lol😊
Ivan, you and John have done a terrific job. A friend of mine had a business partner, that used to be a mechanic in a team that raced a Mk1 Lotus Cortina in the 60s. He told me that they had the engine on the Dyno and were having atomization problems like you were having. Because he had ground out the ports to large. He told me, he solved the problem by putting a bronze gauze mesh, between the Weber carbs and the cylinder head. That solved the problem, until it backfired and dislodged a gauze, and sucked it into the engine. After that, he made it properly with a brass gasket and soldered the mesh onto that, never had the problem again he said!
Clever Engineer, Master Fabricator, and the gentle Lady to keep things running smoothly....Perfect alliance. And of course the camera girl so we can all follow along.💯
Looking forward to seeing the Hall and Scott over the weekend
07:44😂😂 Love it that you left it in😀
Thank you Team Shed Racing, great video, Ivan on top form! Looking forward to seeing how you get on at Goodwood.
Here! Here!
Give him a clip Suzzie, he's getting smutty.
Good to hear from John. You two and the camera the two g way around were hilarious
Broom, broom... Let it go boys! Best of luck with the Goodwood weekend. Cheers, Paul.
Has anyone else noticed Ivan being a bit naughty around Suzie?
It's allways nice 2 see this 2 shaps modifying motorparts to the better.
I love Susies' voice, more please ; )
I wish you success! I'm looking forward to the Goodwood film. Cheers from the shed
Love the new term for the "Outside the box mods" Tweek of the week! 😊 Hope Tom can handle the jandle now.....😊
Bloody fantastic, best of luck for Goodwood. I’d like to come to say ‘hello’ if that’s OK. I am there both days and will be cheering you on. 👏👏🏁
Great video, the mods on the car are fantastic and your camera work grandad shall i call you the next Spielberg? 😂 looking forward to the members meeting with you this weekend.
Like I said Ive, can't wait for the Goodwood footage. Fingers crossed from the Forest of Blackness. Mike
I hope you have a great day at Goodwood 👍
LOVE THE VIDEO Top class innovations that work good luck at Goodwood Team Shed Racing Thank you all.
If they could bottle both yours and John’s, skills, exploring minds and experience you would make a fortune 👏👏👏👏👏
Once more before Goodwood! I,ll be watching live-stream,hope car performs well!
Brilliant, good luck at the Goodwood MM., thanks for the best UA-cam content.
Great works! looking forward to seeing the car go round at Goodwood - hope all goes well!
An excellent video Shed Racing. What a great team to watch and learn from. 🎉❤
Good luck at Goodwood with the car guys. It’s been fascinating following your developments and modifications to the car. I hope it goes well on track 👍
'Tweak of The Week' If that isn't a 'thing' then it definitely should be.
Thanks to all in the team, on todays small aeroplanes you pull carb heat from a heatexchanger on the exchaust via a duct and a manuel valve with a cable!! the rule off thumb is ,moist air between 0-5 degrees celsius is when you are most likely to get carb icing!!
It must have huge torque to spin those bicycle tyres!
Good luck on Saturday! I’ll be watching from Massachusetts. Sf Edge is my favorite race. Hope to see you guys on the podium.
Great video, I can’t wait to see the footage from good wood
Yet another fab show. Thanks so much
With the oil circulating at cold start, the oil temp will still be warmer than the frost temp of the carb, so it should still be an advantage.
Thanks, will be cheering for old #2
What a great bit of tinkering. Thanks guys!
Be careful with unfiltered air on dirty tracks. The clearance between the barrel and the carburetor body can get dirt which will make the barrel stick, hopefully not in wide open throttle. Voice of experience ....
Looking forward to seeing you and the car this weekend at Members.
Cutting rubber - lubricate the knife with 5 to 10% WASHING UP LIQUID AND WATER (I used to be a rubber technologist)
I recognise that red stuff. Used on rally car mudflaps. Totally indestructible. Tried centre-punching it before drilling it once. - nearly lost all my teeth ;-)
Brilliant video well done to the team once again. Good luck for Goodwood looking forward to the video. 🏁
Great it really fly's now, I just hope it does not frighten Tom with the improvement in performance when he drives it at Goodwood.
Another good one suzie, those boys of yours aren't half clever.
Couldn't help but think at higher revs that tweak might make those cylinders run weak but ivan's the man.
Couple of ads this time but the nails made up for it.😊
Legends cheers boys and sue
Even full of cold oil that can full of oil is a huge thermal mass to fight the carb cooling.
Great improvements. It's going to be unstoppable at Goodwood! Go team.
Best wishes, Dean.
If I may make a suggestion. Would it not be better to have the feed to the carburettor warmer at the bottom and the outlet pipe back to the engine at the top, then the heater would fill more completely?
I Love your posts, and all the information you share, and teach us all.Question; For those 'plastic gaskets on the cam', wouldn't it be best to get within 2-3Thousandths and heat the rockers and set them down to tighten? Then the seals would 'cup' and seal better? It just seems the thing you're shooting for.
Thanks for video Iven love old school master.tip of the hat to you.🎉🎉🎉🎉
Ivan the gas mixture going into the two furthest cylinders may be separating because the diameter of the plenums is too large to maintain sufficient vacuum velocity over that distance. (We had had similar problems with Pinto heads back in the 70s you may recall) …
The curves of the pipes leading to the last double branches need to enter at 90 degrees to form a horizontal T...
so the outer curve of the supply pipe doesn't naturally flow more air/fuel mix..
The T means both cylinders get to pull mix equally from the T junction area...
Great video. Thank you.
Top job. Love it.
Absolutely brilliant, thanks team.
Love it
VW beetles had carb icing issues. So the air filter pulled air from the finned (air cooled) cylinders. This was thermostat controlled & it would blend with cold air as needed. Maybe worth pulling the intake air from near the rad & have a mechanical butterfly to switch to cold air . Blending as required
The VW air cooled Beetle engines had a tube cast into the bottom of the intake runners and under the carb extending from one side of the engine to the other...and connected directly to the exhausts on either side where the exhaust exited the heads....
There was a natural flow of exhaust pulses through this tube which of course also ran under the carb...forming a "hot spot"..
which properly and quickly came up to temperature....
about as quickly as those cast iron heat exchangers warmed up to provide heated air to the cabin.
Many Beetles ran as poorly as the Hall- Scott does when cold, especially on a moist cold day...when "young fellas" fitted rorty sounding "headers"...and the cheap headers never had the heat passages.
I had a 1600cc Beetle powered road legal fibreglass bodied open 2 seater that had 1/4 inch of ice on the outside of the manifold because I had headers with no heat passage offtakes....before i knew of this icing phenomenon.
I had to feed some warmed air collected under the cylinder heads and feed that to the air filter box...
It only ran smoothly when 5 kilometres had been covered...and was prone to stalling before then.
The only way to combat the icing is to have the shortest possible distance between the carb and the head (as performance Beetles did with the twin carbs, one on each head)
or a carb throat feeding each cylinder
or to heat the whole pipe manifold
(Datsun 180B had a water heated inlet cast aluminium manifold using water passages directly off the head)
and on the Hall Scott possibly the two branches feeding into the final branches to the heads need to enter in the middle of the branches..
so forming a "T" at 90 degrees horizontally
so both cylinders can be fed by the air/fuel mix after the effect of the turbulence of the mixture hitting the back of the tube and splitting equally...(no natural flow along the inside of the pipe curve favouring the outer cylinders and "starving" the inner cylinders).
Isn't port fuel injection wonderful?
The best!
My old flathead v8 uses hot exhaust gasses to stop freezing , exhaust is hot from the get go.
Ivan please move the Band Saw guide closer to the piece you are cutting. You frightened me to death
fab video as ever!
Come on Goodwood !
Ivan you need a set of period correct pilots goggles for your car then you dont need the wind screen
👍❤️
Carb ice is most likely to form on small throttle openings but im sure you kniw that!
It's a real pucker factor when you are deep in the throttle, both carb throats are wide open..
you go to lift off...
and the throttle is iced wide open and won't return to "normal" operation...
and you are increasing speed upwards of 80mph....
Until you switch off the ignition, while depressing the clutch...
and coast for 1 km while the heat of the engine conducts/convects through the inlet manifold and melts the ice...when BANG!...the throttle returns to idle position...switch on ignition , drop clutch and away...
👍👍👍👍👍
Morris Oxford...when was the last time you drove one of them?
OK Ivan if your off to Goodwood make sure you post a video of you and lady Susan in period dress
He's more likely to be in overalls 😂 thankfully no period dress required for members meeting.
Is it worth taking off the exhaust and fitting stubs, so you can see the exhaust flame colour and by that, judge the mixture in each cylinder. Or fit a set of Colourtune plugs?
Duckie!
need more Suzie ; )
👍🇦🇺
Modellers call that "weathering".
Jolly good show.....but what is duck oil?
Freshly squeezed duck...it's like baby oil...freshly squeezed...oh wait...
It stops ducks from squeaking or sticking
change screen to plastic and slant a touch?
What about asbestos wrap around the manifold above the carbon maybe it will keep it from ice in.
It needs some source of heat on the whole manifold......flowing air/fuel can induce ice on the outside of the manifolds all the way to the head in certain circumstances...
Doesn't look a bit like a Morris Oxford !!!
Hi Ivan, Tom here have you tried insulation on the manifold,introduce sum heat.
When i grow up I want to be Ivan (i'm 52)
somebody please but Ivan a laser temperature measuring thingy, they are so cheap and accurate, no need to spray water on hot exhausts
Yeah, like $10 buys a usable one now, $5 if you shop around.
Not water, it’s Duck Oil. And Ivan can smell the temperature down to half a degree of Fahrenheit.
Duck oil?
Prevents quacking.
Red and yellow can, made by the people who make Swarfega i think. A light preservative oil, doesn't evaporate as quickly as wd40.
Used to use it to protect the chrome on my motorbike through the winter. It looked a sight with a winter's worth of crud on it. In Spring, with some white spirit, it would brush off revealing my gleaming chrome again.
Take one fresh duck and gently wring....
Bloody ASDA fuel…..😂
And before I forget, trim those nostrils hairs Ivan or get the camera right way round.
I spied a classic motorcycle magazine on the bench. Could there be a suspected Wall of Death machine under way soon?? 😄
Great stuff
I would think i f the shim was to direct the flow instead of restrict it it might be a better deal as it can only slow the engine on the top end like a throttle.
The real solution is to heat it, long open runners never really warm up. You see similar issues on air cooled VWs when people use a single carb without hooking up the little exhaust crossover tube that runs along the manifold across the engine.
@@Broken_Yugo Or if the last manifold junction to the manifolds to the cylinders was a horizontal T shape so the air/fuel mix would not follow a curve but would slam into the T and be equally receptive to being sucked in either direction by whichever cylinder demanded it...
Have a great weekend and thank you for joining the team Susie you are a wonderful addition and we all very much appreciate your valued insight.