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I'm sure syncromesh just would NOT engage, otherwise this sort of thing would happen all the time.
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I'm sure a journalist junked one of the very first Jag XJ220's by selecting 1st at over a ton.
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Reverse doesn't have synchromesh. Beside, if you push hard enough on the gearstick, It'll go into whatever gear you like.
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Proves how technically unminded i am! You know i'm going to try this tomorrow ;-)
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If i ran my engine at maximum rev's, how long before it went bang?
Strange, I've just read on another forum I frequent something that I won't include a link to as it may be copyrighted - but a snippet.
Stage 1. Get bike. 1998 Kawasaki 600, 20,000 miles
Stage 2. Run the engine at 8000+ rpm for 30 minutes.
Stage 3. Drain oil (thin as water and boiling) refill with just 1 litre of oil (normally 3.5). (Can hear oil boiling as it is poured in!).
Stage 4. Run engine with throttle wide open. Problems - rev limiter cuts spark, but fuel still flows, so huge bangs from exhaust, blows hole in side and fire extinguiser needed
Stage 5 next day. Top up oil, fire it up, sounds ok.
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I thought this was about cars not motorbikes??
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Steve
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What is the A) the largest and b) the most powerful single-cylinder engine that has been fitted to a vehicle - car, bike, whatever?
cheers, Sofa Spud
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single engined? hmmm.. maybe a Harrier aircraft?
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Need to be more precise..all very well asking a question..But do you mean cars or otherwise.Leaves it open to all sorts of replies.Cars boats planes even model machines
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Steve
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your're right, it has to be about cars.
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I've often wondered if you drained the engine oil and filled it with petrol instead, how long before it went bang? Or if you done the same thing to the cooling system.
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I've often wondered if you drained the engine oil and filled it with petrol instead, how long before it went bang?
about as long as it takes to turn the key i think!
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Tom you would not start..If you did it would be a miracle..cooling system wont come into it
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Steve
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whats the highest road in the world?
and whats the performance of the average car like on it compared to at sea level.
at what height does lack of oxygen really start to be felt?
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at what height does lack of oxygen really start to be felt?
JD - I've been up Pike's Peak in Colorado. There were 14 of us in a minivan, which steadily slowed down as we ascended. At about 10,000 feet it stopped - there was not enough power to pull all of us. So we got out and walked; it was then able to get going again and take half of us to the 14,000 foot peak and return for the other half.
After about half an hour at 14,000 feet waiting for the others, we got distinctly dizzy. Usual air force rules are that if the cabin altitude is above 10,000 feet then oxygen is required in order to stay alert enough to pilot the aircraft.
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I think the highest road in the world that can be driven on is the Karakoram highway between Pakistan and China. There is a pass at something like 18,000 feet.
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>>Tom you would not start..If you did it would be a miracle..cooling system wont come into it --Steve
Is that really so, Steve? When a car is started after an oil change, there is no oil in the engine - it's all in the sump. It still starts. Conclusion: oil is not a requirement for an engine to start - spark, compression & fuel are the only requirements - as illustrated by Cliff's tractor.
IIRC, somebody posted a few months ago about a trial?/banger racing? day at a racetrack they had been to. To illustrate the importance of lubrication, an oil company took a car, drained the oil from it, and then ran it round the track until it seized. iirc, that took quite some time - half an hour, maybe.
Then they took another car, and drained the water. IIRC it only managed a few hundred yards before it disappeared in a cloud of smoke.
Anybody else remember this? (Connection here is too slow to search, sorry.
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When you drain the coolant from an engine, it's components heat up rather rapidly, closing tolerances and creating interference fits as the head and block warp, also creating head gasket leaks. The result: metal against metal. The damage is pernament! (sorry)
Draining the oil doesn't close up the tolerances so rapidly (and there is a thin film of oil remaining, even when there's no pressure), and it's why an engine with no oil will happily carry on a little longer.
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>>When a car is started after an oil change, there is no oil in the engine
That is not true..There is always a film of oil left behind. And without oil no compression no start..Actual question was. if oil was replaced with petrol how long before it went bang..Apart from the fact petrol would wash the rings to cause metal to metal contact (loss of compression)I would expect the spark to ignite the petrol vapour..So to answer you yes oil is a requirement.And is still present after an oil drain
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Steve
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>>There is always a film of oil left behind. And without oil no compression no start..Actual question was. if oil was replaced with petrol how long before it went bang..Apart from the fact petrol would wash the rings to cause metal to metal contact
Will this is a thread about crazy questions. If you really want to be quite that pedantic, Steve, I doubt very much whether sufficient of the oil on the piston rings would be removed by putting petrol into the sump to prevent compression.
So it would start... In terms of how many times it would all go round, then yes, I should think might well be right.
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Didn't somebody post a link to a picture of a huge marine single cylinder diesel on here recently? Patently off-topic, I know!
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in the us on one of the advert channels they regulary run an advert for an oil aditive that is supposed to great things for your engine
part of the show is running cars with additive, and then draining oil, and starting car up again, and wow isnt the additive great because once its been used the engine will even run with no oil, and they run it for quite a while more than an hour with no problems
of course what they dont say is that the engine would probably do the same without the additive having been used, and the engine is almost certainly knackered in some regard at the end of this
as said above if you run an engine with no water it will fail pretty quickly totally warped from overheating, unless its air cooled of course, and some motorbike engines that are descibed as aircooled (no water) are actually getting more cooling from the oil system than from the air - but thats another story
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I think the highest road in the world that can be driven on is the Karakoram highway between Pakistan and China. There is a pass at something like 18,000 feet.
So how does your car engine do at that height ? what kind of cars use it? surely they must be way down on power? to say nothing of the drivers being dizzy?
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high altitude travel was actualy behind the development of the turbo charger or high altitude compensator as it was originaly known. when the railways changed from steam to diesel in south america(I think)they found that diesel became useless as altitude rose whereas steam became more efficient,turbos were a direct result of the need for more oxegen at altitude petrol in radiator question brought back memories as
before the general use of antifreeze my grandad used diesel in the cooling system
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Re the marine engine, I remember seeing a pic of the world's largest engine, which I think was a straight 12 the size of church.
RE: single-cylinder engines, the Field Marshall and Lanz Bulldog tractors of the 1930's to 1950's had big single-cylinder diesel engines that were 2-stroke. I've seen them at vintage shows etc., they make a slow 'ponk-ponk-ponk' sound.
Cheers, Sofa Spud, replying to his own question.
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