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PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars |
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SU Carbs overflowingViews : 2295 Replies : 30Users Viewing This Thread : |
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Jun 17th, 2023, 21:10 | #21 |
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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
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Jun 26th, 2023, 22:44 | #22 |
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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 |
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Jun 27th, 2023, 12:17 | #23 |
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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. |
Jun 27th, 2023, 18:18 | #24 |
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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. |
Jun 30th, 2023, 02:59 | #25 |
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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. |
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Jun 30th, 2023, 06:48 | #26 |
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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. |
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Jun 30th, 2023, 08:06 | #27 | |
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Any way enough middle aged man ranting - Happy Friday fellow Volvo drivers! Doug. |
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Jun 30th, 2023, 09:53 | #28 | |
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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.
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... another lovely day in paradise. Last edited by Othen; Jun 30th, 2023 at 09:57. |
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Jun 30th, 2023, 10:52 | #29 | |
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One day I will get rid of all of the rust. |
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Jun 30th, 2023, 11:45 | #30 | |
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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.
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... another lovely day in paradise. |
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carbs, floats, flooding, jets, rebuild |
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