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Post by rosieuk on Jul 5, 2019 9:13:43 GMT
One of these has been fitted to my car. It's working well (now), the question I have is whether it had lead free valve seats fitted or not? I seem to remember being told a while back - that all military engines had to be able to run on unleaded as soon as it was introduced in the US but I don't know if that included the spare 1800/B/transverse engines for ADO17.
If anyone can shed light on this, because I'm contemplating an aftermarket catalyst and redex lead and catalysts do not get on.
Its only done 29000 miles so I'd rather leave it alone and use redex instead of putting a cat on it and munching the valve seats.
Thanks
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Post by 1800heap on Jul 5, 2019 9:49:49 GMT
Redex or Flashlube would be the go if you are worried about the valve seats not being hardened.
Surely you are not suggesting putting a cat on a non efi engine? We are lucky we don't require a cat. Especially those of us that like to make them go faster! People are usually keen to get rid of them rather than put them on!š
Nick
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Post by dave1800 on Jul 5, 2019 9:53:55 GMT
My experience of purchasing an ex military 1800 directly from the military auction in Ruddington was that they were not compatible with unleaded fuel, which wasn't an issue at the time. They used low compression engines, some as low as 6.9:1 which enabled hem to operate in countries with low quality fuel. From what I recall, the lowering of compression was mainly achieved by using deep bowled pistons. There was no indication of any valve seat hardening. Hope this helps.
David
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Post by rosieuk on Jul 5, 2019 14:08:44 GMT
Redex or Flashlube would be the go if you are worried about the valve seats not being hardened. Surely you are not suggesting putting a cat on a non efi engine? We are lucky we don't require a cat. Especially those of us that like to make them go faster! People are usually keen to get rid of them rather than put them on!š Nick A cat can be used on the 1800/1910cc engines without a problem. The issue back in the day was they were very restrictive designs, usually in the wrong place (slow light-off) and electronic ignition was needed (and it needed to be working) - not the free flow versions today. I had two two stroke autocycles, stratified charge motors, that both came with catalysts fitted. The engine on mine doesn't appear to be low compression. Isn't there something in the engine number that'll tell you? I use this car as a daily driver and was just asking out of curiosity. I'd also be curious to know since the tune on these is 3% CO2 what would be coming out of the back if you fitted a free flow cat. Plus if someone can confirm it's got hardened seats I don't need to be buying Redex. Its running like a dream at the moment. Starts within 2 spins from cold soak - and probably 2nd cylinder when hot. Amazing when you think it's a motor originally designed when Winston Churchill was prime minister (the first time), using a carburettor that in principle was kicking around almost 110 years ago. This is precisely the problem I have with all this modern crap. It's never an improvement. If it has computers and sensors that throw a wobbly you're immobilised by a tiny issue. Sure you get a little more power but you can't fix it when it dies. Some canbus cars are coding radios and other components so they won't work outside *that* car so literally no-one but the manufacturer can repair them, and even then it's cheaper to chuck it out. Others don't conform to OBDII so only manufacturer testing gear will work. Dieselgate. Monkeygate. Stupidly overpowered engines. Rate the engine to the job. 100mph top speed gives you plenty of power for modern roads. Update the cars with new parts and engines every so many years - don't build unnecessary new ones - Tatra did it for years - took a car in as part of the service every 7 years - examined it - then put it on the production line and repair/uprate to current specs. We'd have factory Perkins Prima ADO17s by now. Or a 1.8 VVC K series version.. What's not to like? I'd love to kitbash a BMC B 1.8 supercharged diesel for my car with the long .862 ratio 4th gear. It's not hard but it is expensive. We are wasting so many resources and causing pollution we can't afford as it is... And then we have scrappage schemes... I used to be an environmentalist. I don't bother any more. Most of the stuff you think you're recycling gets landfilled or burnt. Electric cars are usually *more* polluting for at least 7 years and some cases 17! years compared like for like with modern cars. No one cares, because if they did it wouldn't be "new shiny" it'd be a new engine in a properly maintained or repaired Cavalier or Cortina or Sierra. Imagine an ecoboom Sierra - 1 litre, 123hp. Lovely and clean, quick and fairly reliable. No more CVH (clattery vapid and harsh) or chocolate camshafts. The mk 5 escort is probably beyond hope though, those were a horror show bordering on a crime against humanity. Don't try to force people into new cars - get them into new components. Replace older engines, not older cars, or replace 5 speeds or 4 speeds with 6 or higher. Have mains engine heaters as compulsory - that's 15-20% improvement alone - and much less stressful on the national grid.. But I've given up. There's no point, it's too late anyway. The rabbit in the hat has karked it, it is deceased, it is an ex rabbit.. And soon even the Caped Cretin won't be able to pretend. |
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Post by Penguin45 on Jul 5, 2019 17:31:55 GMT
Agree with much of what you say, Rosie. I have spent most of my working life repairing domestic appliances and am saddened by the way in which they are becoming just disposable items. One of several reasons I shall shortly be retiring.
Just a practical observation regarding catalytic convertors. Many carburettors are set rich or drift that way with use. They can also flood fuel through the engine when the float valve fails. Both situations will destroy a cat in short order.
Otherwise, interesting thinking.
Chris.
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Post by 1800heap on Jul 6, 2019 0:23:55 GMT
Appologies rosieuk I was not trying to suggest it is not possible to have a cat on a non efi engine. My surprise was that you seemed to be suggesting it as a bolt on option to reduce emmissions. I can see from your reply that you realise it is not really an option as a bolt on to carbureted engine that never had a cat. Chris is correct the thing would be overwhelmed by the excess fueling that you are bound to get with the SU. Especially if you forget to put in the choke! Major changes would need to happen for the cat to stay working for more than a short period. I would put my money into fitting efi if you were worried about emmissions, so well done snoopy I think it was, for doing it. Not sure if that was his motive though. Thanks for the thought experiment though rosieuk makes interesting reading. With regards to the Carbon dioxide output, I would think this would rise a little as the idea of a cat is to get rid of some Carbon monoxide and Nitrogen oxides which are converted to Carbon dioxide etc. You may have a typo confusing CO's with CO2's. Sadly China has put pay to the repair rather than replace mentality. There is not enough value in things to warrent the time it takes to repair. On the bright side though a lot of gear these days is quite reliable including cars compaired to the old days. Unfortunatly not as user servicable! Cars are more fuel efficient give less emmisions and are generally more comfortable but alot more boring! I note that even the Tesla if charged from flat in Australia uses about 8kg of coal!š
Sorry can't help with the valve seat question.
Nick |
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Post by rosieuk on Jul 6, 2019 9:58:50 GMT
Agree with much of what you say, Rosie. I have spent most of my working life repairing domestic appliances and am saddened by the way in which they are becoming just disposable items. One of several reasons I shall shortly be retiring. Just a practical observation regarding catalytic convertors. Many carburettors are set rich or drift that way with use. They can also flood fuel through the engine when the float valve fails. Both situations will destroy a cat in short order. Otherwise, interesting thinking. Chris. I've had a Beko washing machine on warranty for 12 years - it's a bit of a case of Triggers Broom and it dribbles a bit occasionally but it still works fine even though the whole drum was replaced 7 years ago when the counterweight decided not to stay attached. If a mini 5 speed can be built then a 5 speed can fit in the trainee slurry pit that is the ADO17 sump - possibly even a 6 speed. We honestly need to go back to the time when crumple zones were a nightmare in a designers eye, when you avoided getting killed by a oncoming car by not being in front of it. Because the simple fact of the matter is that every idiot that survives getting a facefull of i30 at 35mph is one that breeds, and you are more likely to take idiot risks the lower your IQ. If you played the same game with a car when I was growing up, you'd likely be going to your funeral in a bucket. Traffic safety therefore = lower collective IQ over quite a short number of generations. Why is it we have dribbling flat-earthers and anti-vaxxers? Because the retard ratio hasn't been weeded out - and are breeding, profusely. Come back cable/drum brakes & crossplies - all is forgiven. That's not to mention the *curing cancer* mass hallucination and all the rest of it. I just drove 2 miles from Layer de la Haye to Colchester. Following a car full of kids - one of whom was hanging out the front passenger window to his *waist*! I've seen dogs sitting on drivers laps, phones, people reading the morning papers at 50mph. And as for the 30mph wonders... And people complain that I'm cynical. I wonder why? |
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Post by peppib on Jul 6, 2019 18:56:44 GMT
One becomes very cynical when an idiot in a van slams into the back of your Merc Limo and confines you to a wheelchair in later life. Crumple zone saved my life
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Post by 1800heap on Jul 8, 2019 2:50:24 GMT
I unfortunately feel compelled to reply to the last post from rosieuk as a member of this forum. I will not quote the text sorry as I object to the content!
This is not a forum for views that appear to me to be beyond cynicism! This is the technical section of the landcrab forum where members try to help others with their landcrabs tech issues.
While sometimes we digress from the subject a little and this is perfectly acceptable, it is generally in good humour and for the interest of others! I don't appreciate reading the rot that you have just posted! Please take a leaf out of the books of penguin, dave1800 etc etc and post in a positive way.
Chris is currently I believe taking his help one step further and repairing a fellow landcrab owners car, to help him out, as he often does! This attitude is why l like this forum. Please don't lower the tone. There are many other forums where Iām sure your views would go down well.
I read and am part of this forum because the members have a common positive interest in the crab. PLEASE participate in the same way.
I did some very silly things in vehicles as a young fellow which I now regret and which lucky for me did no harm to me or others! If I were to have had an accident when I was 18 Iām sure my parents and I would have been very glad if the design if my vehicle had saved my life! Tragically some are not so lucky, even with well designed cars! Youth have not changed they are young and lack experience yes and of course there are some bad eggs, that cant be helped, people make mistakes including you, thats life!
Nick
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Post by Penguin45 on Jul 8, 2019 12:29:18 GMT
I'm locking this thread. It has wandered far from its original topic in a very short period of time and is obviousy causing some rancour.
We have an "Off Topic" area where anything can be discussed if members wish or choose to indulge, but this particular area is for Technical Discussions and is best served by staying "on topic".
Let's keep the forum a friendly place everybody.
Chris,
Admin.
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