Amazon: SU Carbs overflowing

[Rustinmotion]

I’m all for reducing our carbon footprint I don’t think anyone can deny we have made a mess of things, I’d argue choosing E10 over E5 on a car doing sub 5k miles a year is not going to help, until we stop buying from countries that don’t enforce emissions and ship product half way around the world in inefficient freight ships we won’t make a dent, if you want your choices to count buy local wherever you can

[blueosprey90]

I hate to mention that my MGA has virtually the same carburetors as my PV 444, primary difference being the float bowl lids. So perhaps this will be of help.

https://mgaguru.com/mgtech/carbs/cb116.htm

https://mgaguru.com/mgtech/carbs/cb116a.htm

https://mgaguru.com/mgtech/carbs/cb116b.htm


If your floats have sprung a leak and are sinking, you can boil them in hot water until all the fuel bubbles off, then solder the hole. If you decide to get new float bowls, get the Nytrophil floats.

See https://www.bpnorthwest.com/carburet...SABEgLd8fD_BwE

[Derek UK]

Float in the link isn't for the HS4 and HS6. Burlen do a "Non Sink" synthetic float for those.
Beware trying to fix brass floats with solder. You will almost certainly add more weight to them which will change the position/angle where the float. This will change the fuel level.

[142 Guy]

I have done the solder repair on a leaky float on a motorcycle carb. Pain in the derriere! As the you heat the float up to the solder melting point the air in the float expands and tends to blow out the hole. As the float / air cools it tends to suck the solder in to the hole restoring the leak. You need to find that magic point where you are just above the solder melting point; but, the solder cools and solidifies fast enough after removing the heat that it doesn't get sucked into the float interior.

Sometimes if it is a pinhole you can do a tiny blob of melted solder over the pinhole to seal it without getting the float metal above the solder melting point. Sand down to remove any excess. It doesn't make for a structurally strong repair; but, this isn't exactly a high stress application.

[blueosprey90]

Not a problem so far in the PV 444, but in the MGA running at say 4,500 to 6,500 rpm all the time tends to cause the carbs to disintegrate. I've soldered up about a half dozen of the copper floats over time, but now use the Nitrophil floats, carrying all those copper floats as "spares". If you are careful, the solder adds negligible weight - usually you are just covering a pinhole - and it works a lot better than a leaky float.

A vintage race event is like a big scavenger hunt. You wouldn't believe the things I've had to scrounge up to save a weekend. I once borrowed and ran some much smaller H2 floats.

[142 Guy]

Smaller H2 floats? That is nothing!

A friend of mine was born in India. Amongst the vehicles his family had was a Willy's Jeep used on their agricultural property back in the '60s. The Jeep encountered some carb problems associated with a failing float which his father had 'fixed' by a local mechanic. Fix worked a couple of weeks. Investigation revealed that the mechanic had carved a new float out of wood that sort of worked until the float became fuel logged.

[packers1712]

Originally Posted by Rustinmotion

I’m all for reducing our carbon footprint I don’t think anyone can deny we have made a mess of things, I’d argue choosing E10 over E5 on a car doing sub 5k miles a year is not going to help, until we stop buying from countries that don’t enforce emissions and ship product half way around the world in inefficient freight ships we won’t make a dent, if you want your choices to count buy local wherever you can

Oh my god this is exactly my sentiment, the expectation to be able to have strawberries in the supermarket during December by the EV driving middle class infuriates me - buy seasonally and locally should be the message not buy a new EV car that will fix the problem driven by capitalist greed!

Any way enough middle aged man ranting - Happy Friday fellow Volvo drivers!

Doug.

[Othen]

Originally Posted by packers1712

Oh my god this is exactly my sentiment, the expectation to be able to have strawberries in the supermarket during December by the EV driving middle class infuriates me - buy seasonally and locally should be the message not buy a new EV car that will fix the problem driven by capitalist greed!

Any way enough middle aged man ranting - Happy Friday fellow Volvo drivers!

Doug.

One of my dog walking friends accused me of being wasteful in driving around my 60 year old Volvo that only does 25MPG the other day. To be fair this was only a riposte to me saying it profligate of her to fly to Thailand for a holiday (which as my son calculates: uses 1.15 tonnes of aviation fuel per passenger for the flights). I answered that if I'd bought a new motor car every 8 years (a reasonable life for a modern car) then each of the 8 cars that had been needlessly manufactured on my behalf would have used the same amount of energy as 6 years driving worth of petrol during its manufacture (I made that fact up, I have no idea whether it is plausible or not, but the lady had no idea). Even if the 8 newer motor cars I might have bought were twice as efficient as my Amazon (and all achieved 50MPG) they would never pay back the additional manufacturing energy bill.

Even though I made up the key facts, my dog walking friend was convinced - and feels contrite about holidaying in Thailand. I enjoy having the moral high ground and gloating.

[Burdekin]

Originally Posted by Othen

One of my dog walking friends accused me of being wasteful in driving around my 60 year old Volvo that only does 25MPG the other day. To be fair this was only a riposte to me saying it profligate of her to fly to Thailand for a holiday (which as my son calculates: uses 1.15 tonnes of aviation fuel per passenger for the flights). I answered that if I'd bought a new motor car every 8 years (a reasonable life for a modern car) then each of the 8 cars that had been needlessly manufactured on my behalf would have used the same amount of energy as 6 years driving worth of petrol during its manufacture (I made that fact up, I have no idea whether it is plausible or not, but the lady had no idea). Even if the 8 newer motor cars I might have bought were twice as efficient as my Amazon (and all achieved 50MPG) they would never pay back the additional manufacturing energy bill.

Even though I made up the key facts, my dog walking friend was convinced - and feels contrite about holidaying in Thailand. I enjoy having the moral high ground and gloating.

Here you go, you produce 0.42kg of CO2 per mile. A new car on average produces 6tonnes to manufacture so you can drive the old girl for about 14354miles. If buying a new car every 8 years then you can drive your Amazon 1794miles each year and only produce the same amount of CO2 it would have taken to produce the new car. Running old cars are great for reducing CO2 production.

[Othen]

Originally Posted by Burdekin

Here you go, you produce 0.42kg of CO2 per mile. A new car on average produces 6tonnes to manufacture so you can drive the old girl for about 14354miles. If buying a new car every 8 years then you can drive your Amazon 1794miles each year and only produce the same amount of CO2 it would have taken to produce the new car. Running old cars are great for reducing CO2 production.

Wonderful Mitch,

Of course the equation is even more in favour of the Amazon in that a new car still uses fuel. Let's assume it produces about half the CO (so 0.21kg/mile) that Aunt Maud does. If 'y' is the annual mileage, then Aunt Maud produces 0.42y kg/year of CO, and a new petrol car every 8 years makes (6000/8)+0.21y kg/year. A bit of simple mathematics gives a break-even point of y=3,571 miles/year.

I'm enjoying gloating from my moral high ground.