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Purchase your dream Nissan through virtual showroom
Launched in Malaysia - 2021 Porsche Panamera facelift is the perfect car for mid-life crises
from 0 to 100 km/h in 5.4 seconds while top speed is 270 km/h.Stopping power comes courtesy of six-piston
2nd-gen 2020 Mercedes-AMG GLA 45 unleashed, 421 PS/500 Nm, 8-speed DCT, AWD
Drive is sent to all four wheels through an 8-speed dual-clutch transmission (DCT).0-100 km/h is dusted
Mitsubishi Lancer Evolution X called to escort Covid-19 vaccines in Malaysia
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cost and weight penalties than putting in a whacking big battery.But of all engines to choose, why go through
Aston Martin Rapide AMR launched in Malaysia – Only 2 units, from RM 1.1 million
The Rapide AMR also comes fitted with carbon-ceramic brakes as standard – 400 mm ones with 6 piston
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2020 Aston Martin DBX launched in Malaysia - a 550 PS SUV fit for Bond
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President Jokowi favours a Toyota Land Cruiser to wade through floods
A video of the Indonesian president, Joko Widodo, or better known as President Jokowi, wading through
2020 (F97) BMW X3 M Competition launched in Malaysia, 510 PS/600 Nm, RM 886k
electric power steering.Brakes are M compound units with discs measuring 395 mm at the front clamped by 4-piston
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like China, Korea or other Asian states, get the problem under control then we have a chance to come through
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sudden flash floods and they’re never pleasant to drive in.At times like these, do not drive through
Lynk & Co Zero Concept EV gets ready for production – Proton’s next EV?
The BIW refers to the body structure as well as parts such as the roof, fenders, hood, trunk, and doors
Mercedes-AMG GT R Pro: Ginormous HOOD?
Now lets talk about the hood!What do you think of this car from your first glance?
Honda Jazz Hybrid vs Honda Jazz V vs Toyota Yaris; combing through the spec sheet
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All-new 2021 Mercedes-Benz C-Class (W206) debuts; no more hood ornament, rear-wheel steering
Mercedes-Benz C-ClassAll variants of the 2021 Mercedes-Benz C-Class no longer feature the traditional hood
2020 Mercedes-AMG GLE 53 4Matic+ Coupe introduced in Malaysia - 435 PS/520 Nm, RM 787k
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electric power steering.Brakes are M compound units with discs measuring 395 mm at the front clamped by 4-piston
Review Post piston through hood
Whoever is revving their shit box over and over in magnolia, I sincerely hope you blow a piston through the hood of the damn thing.
Boost is fun until you blow a piston through your hood 😂😂
My truck is one RPM away from putting a piston rod through the hood.
wolfykov: Vorsprung: i do 165 in the 55 and then my piston flew through the hood and landed on the winds... http://jalopnik.com/c/22325425
Don't test fate by saying "this can't possibly get any worse". Because fate just blew a piston through the hood of my car. I can't fucking afford this right now. Nor a new monthly bill for a new car I work 12 hours a day already I just fucking CANT
Oh your bore is .0004 inches off? Have fun getting a piston thrown through your hood!
*slaps roof of Satsuma* this b- *three piston heads shoot through the hood, a wheel falls off and the radio turns on*
Trump’s ludicrous exchange w Acosta is evidence of why the media must doggedly push him on his every malicious, pernicious point. He is emotionally & intellectually incapable of actual debate. Keep pushing & he begins to shriek in seconds. Make him meltdown. That’s your job.
I just wanna watch your car blow a piston through the hood.
“It made 2000hp for 3 seconds” “Oh ya? What happened?” “I lost power and sent a piston through the hood” “Something should have told you earlier that those 90’s shitboxes don’t like that”
Review Q&A piston through hood
What happens if I shift to 1st gear in a manual transmission vehicle while driving 130 mph?
If you are lucky just the driven wheels will lock up, if you’re not that lucky your engine wil over rev (way past the redline on the tachometer) and the engine will throw a piston out (literally launch a piston through the hood/block) or throw a rod through the block. I found a video showing what happens, this guy goes from the 6th gear to the 2nd at 95 miles an hour:
What was totally acceptable in car repair and car maintenance 50 years ago and isn't now?
Original Question: “What was totally acceptable in car repair and car maintenance 50 years ago and isn't now?” Lying to customers. In the early 1950s Chevrolet changed the type of piston rings it used in the venerable Blue Flame Six. Since 1937 when this engine was introduced the engine was built with conventional iron rings. During WWII a lot of experience was gained with “Chrome Rings”, chromium plated really, particularly in aircraft engines. The hard chrome surface had more wear resistance leading to far longer piston ring life and extended intervals between overhauls. So Chevrolet decided to use the “better” chrome rings in the Blue Flame passenger car engine. There was, however, a problem. The chrome rings were hard. They were supposed to be. How could that be a problem? Well during the extended (usually 1,000 to 3,000 mile) break-in period that was standard for cars in the 1950s, during which the new owner was required to both limit the car’s top speed and constantly vary the speed while breaking the engine in, frequently and abruptly letting off the throttle to increase engine vacuum and suck engine oil past the rings, the iron rings would lap themselves in and seat. That is they would wear in a manner that the piston rings more exactly conformed to the piston bore. This lapping of the rings during engine break-in increased the compression, reduced combustion gas blow-by, and reduced oil consumption. On a new engine oil consumption was expected to be high when the engine was new and during break-in but was gradually reduced as the break-in procedure allowed the piston rings to lap in and seat. The problem was that the new chrome plated rings, the surface of which was much harder than the bore of the cast iron block, would not lap in and seat like the older iron rings. The engines, thus, continued to burn an excessive amount of oil during and past the break-in period. The standard solution to such a problem would be to tear the car’s engine down, hone the cylinder walls, replace the defective piston rings with new iron rings, and rebuild the engine. That would, of course, require rebuilding or replacing the engines of every new model sold. Did the dealers do this? No. Of course not. What did they do? Well they lied to the car owners persuading them that there was nothing inherently wrong with the car, like piston rings that would not seat, but only a minor issue that could be easily fixed. Then they took the car to a far corner of the garage where the owner could not see it and where he was prevented from going (“insurance rules” you know) and opened the hood. Then the mechanic took off the engine’s big oil bath air cleaner giving access to the carburetor’s air intake. Then he went over to the bench and got big can of Bon Ami, an abrasive scouring powder, popular at the time, that housewives used to scrub kitchen sinks and bath tubs. With the Chevrolet’s Blue Flame Six idling without an air cleaner the mechanic poured a half cup of Bon Ami into his palm, leaned over the engine, and, taking a deep breath, blew the scouring powder into the engine’s carburetor. The Bon Ami was sucked into the engine where it thoroughly scrubbed the cylinder walls. In one minute the engine effectively accumulated 20,000 miles of wear! The rings were seated…if a bit worn. Problem solved! The “new” car was returned to the owner with some mumbo-jumbo about “adjustments”. The excessive oil consumption was reduced. Unknown to the owner the “new” car now had a well worn engine. And, if he opened the hood and looked closely he would detect a fine white abrasive power on the intake manifold and valve cover. Note: Before government intervention and consumer protection laws there was a lot of such fraud in the car industry. In 1958 Oldsmobile sold a lot of Rocket 88 and 98 engines with a similar piston ring problem. Mercury in the same era built a lot of cars with soft camshafts that very prematurely wore the lobes down. I could list a lot of such problems. In all of those the owner was defrauded and required to pay for an engine rebuild not covered by the warranty. So next time some moron bitches about government regulations and “freedom” remember what happened when we did not have such regulations. Note 2: The American industry standard warranty for cars through the 1950s was only 90 days. And that limited warranty had a long list of excluded non-waranted “wear items”. It was only in the 1960s that Ford offered a shocking 1 year/12,000 mile warranty and then a 2 year 24,000 mile warranty on their VERY EXPENSIVE Lincoln Continental. Chrysler in the 1960s, desperately trying to regain lost market share and avoid bankruptcy, then upped their warranty to 24,000 miles as a marketing effort. Moreover, as most car buyers did not have the knowledge of a skilled mechanic they could easily be lied to by a dealership and told that the car was not deffective but rather had been damaged by misuse or by an independent garage mechanic. I had personal knowledge of the latter fraud. My father, who was an educated man but knew very little about automobile engines, had a new Oldsmobile which had high oil consumption and low compression. The problem was caused by defective piston rings installed at the factory, and this model year Oldsmobile later became notorious for the problem. The dealer persuaded him that he needed to have the engine rebuilt and new rings installed at his expense. When my father asked why a new car should have deffective piston rings the dealer showed him the rings which had been removed from the car and pointed out that they were all broken. The dealer then lied and claimed that his son, me, a hot rodder, must have advanced the ignition and made the rings break. (Not possible.) My father did not realize that the standard way to remove rings from a piston at that time was to break them! Of course they were broken! The dealership mechanic had broken them to remove them! Until consumer protection laws forced them to clean up their act, lying to customers was common in the car industry.
My car stalled when a truck splashed water over the hood. What might have happened to make it stall?
You engine is not necessarily “destroyed” as was mentioned in another answer. There are many sensors and electrical components that can be affected by water intrusion in the engine bay that will stall an engine. A hydro locked motor happens when water enters the pistons through your air intake, which is usually from submersion, not splashing. There are field techniques to deal with this when away from help that I won’t go over here as you are asking this question on the internet and not in the woods. The main thing is to not do more damage. ,Do not try starting and turning it over! ,Get it towed to a service shop, tell them what happened and let them figure it out. Good luck. It might be a relatively minor issue.
Can an inline-6 engine be made with smaller pistons to take up less space? I read that the long geometry makes the hood long and only ends up being used in sportier cars.
There are mainly two options to” fit an inline 6 in a shorter engine bay. -1st option would require to build it as a stroker engine,. A Stroker engine ,(also called ,undersquare,) is an engine that has Pistons that travel up and down a lenght which is greater than the diameter of the piston itself. so as you can imagine, engines of this kind have ,very small pistons in diameter., thus is longitudinally ,shorter however there is a problem with Stroker/undersquare engine… Those engines, because of the longer distance the piston has to travel up and down, although will be better at transferring a more substantial leverage on the crankcase ( the piston rod applies a force at a greater angle) ,will put a lot of, ,mechanichal stress, on components like: -Crankcase -Piston rods -Crankpins This stress is, of course, higher the higher the speed the engine is turning. So ,those type of engines will be better in the end at low speed torque (leverage power) rather than power at high RPM’s. Nowadays engines have become very efficient and what could be achieved through a six cylinder then, can now be achieved with a more refined four cylinder. -2nd option would be to use available space better You said a six cylinder would require a long hood, and that is true but if you look at most , let’s say, five cylinder cars you will think that even with a cylinder “cut off” those cars could not be fitted with such an engine. that is because most of them have a ,transverse setup , with the engine sitting “horizontally” between the wheels. So even if Most six cylinder cars, have a longitudinally placed engine, in theory ,you could fit a six cylinder transversally if the car was wide enough,. The Lamborghini Miura(it’s a v12 car, but in the end a v12 is made by two inline six cylinder merged at a angle to put it simply) adopted a similar solution since the available engine bay was very wide but not so long.
Mechanics, how much has someone messed up their car trying to fix it themselves?
Once, an owner of a Lincoln Mark VIII replaced his own spark plugs. While he was driving sometime later one of them came loose and was forcibly blown from its hole breaking everything in its path until the hood stopped it. The guy didn't have tools on him at the time so he left the spark plug out and unplugged the fuel injector to that cylinder and determined he would just drive it the rest of the way home like that. So far so good, right? Well clearly this guy knew more than most and he was doing ok, but then he thought what if a little bit of sand gets sucked in through the open spark plug hole while I'm driving… That could destroy that cylinder, he thought. So he got a rag (that he evidently kept in the trunk for checking fluids) and stuffed it down the COP tube (presumably as a filter). He didn't get very far. On one of the intake strokes it sucked the rag into the cylinder but it got stuck and held one of the valves open. The piston hit that valve repeatedly and broke the head of the valve off. The rag got shredded to a fine powder and was ejected mostly out the exhaust where it plugged the catalytic converter, but once the valve head had made it through the piston, a fair amount made it into the oil pan… Enough to clog the oil pickup tube. Now keep in mind that once the piston cratered oil was being fed into the exhaust and that's why we couldnt get the rag out of the cat. He heard all the noise but he thought it was just that the rag got blown out and he was just hearing a normal cylinder with the plug removed until the oil light came on. I felt so bad for him, he was a really nice guy and that motor and cats were not cheap! I wish he had just called for a tow.. I have hundreds of stories that cost less, and a few that cost more, but that one broke my heart!
What are the most catastrophic things that could occur under the hood of a car while driving?
Apart from cam belt failure … A run-away Diesel engine is rare “fun”. A fault condition lets fuel mix with the lubricating oil until there is so much runny mix in the sump that the engine starts burning it. Turning the ignition off will not make the engine stop. It'll stop fuel injection, but the engine isn't runnjng on injected fuel any more. Your brakes may be unable to stop the car. You have to know to force it into neutral, ,then, stop the car, then run away. Because the engine is now going to rev itself to destruction — pistons through the side of the engine block, etc. Big balls of fire not impossible. With a manual transmission you might quickly try holding the clutch down, shift into top, pull the parking brake on as hard as you can, push the brakes as hard as you can , drop the clutch and hope to stall the engine. But a big diesel with plenty of hydrocarbons to burn is hard to stall. If this fails, back into neutral (and run away).
What was the most difficult car or engine repair or maintenance you have ever done? Were you successful or did you give up in despair?
You asked for it! ;) When I moved from Southern California to Seattle I brought my ‘68 Chevy II Nova SS with me. She’s quite a rare car. I didn’t really need to drive her for we drove my GF’s ‘63 Chevy II Nova SS all the time and without a job yet, no point in having the extra expenses. So she sat inside the tiny Model T garage of our 1920s house and often outside. She went through lots of rain and even a tremendous snow that was up to her door handles. What I knew better about doing was to plug her exhaust pipes….but I didn’t. :( Eventually we moved further north where she was outside a lot too. :( Finally it came time to get her going. The rain/snow had done some damage to her, most noticeable her vinyl top. :( So the first thing to do with a long sitting engjne is to pull the spark plugs and spray some penetrating oil over the pistons making sure you get all around them. The longer it has sat the more applications to be done though you don’t want a flood in the cylinders. Change the oil and filter, Next pull the distributor and spin up the oil pump with a tool you’ve either made or borrowed. It’s handy to mount an oil pressure gauge under the hood so you can see what’s happening. Waiting a few days or so crank the engine over clockwise by hand with a breaker bar and impact socket on the crankshaft dampener bolt, trans in neutral of course. Now…this should work but it didn’t. :( I could NOT turn it over. I tried using a floor jack on the bar, nothing. I then raised the front end, jack on the bar again and tried bouncing on the bumper. Nothing! I kept this up for days hoping the oils’ would work, A few days later the breaker bar snapped! So something serious was wrong and now time to pull a head and see. Well nothing obvious there so pull the other and… OH NO. One cylinder coated in heavy rust. :( Why? That exhaust valve was open and so it was apparent that years of moisture had seeped through the exhaust system into that cylinder past the valve. :( So now, more penetrating oil, using a short 2x4 resting on the piston I started tapping away on that with a short handled 8 lb. sledge. Nothing happened with days of this. :( Now I pull the oil pan and take the piston loose of the crank and work to turn the crank without that piston issue and it finally gives and moves the other pistons. Leaving the crank lobe for the problem piston out of the way I use a long rod and start banging away on the piston from underneath. This was much fun. :( A buddy has loaned me a micrometer and so every day for days I wail on the piston from above and below til it finally moves. The piston is becoming junk by now but that’s ok, I’ll replace it and the rings. It finally breaks loose and I get it out in pieces. Cylinder doesn’t look too bad since the rust is only above the ring line. At Harbor Freight I buy a gram scale and weigh all the piston pieces. I also buy a hone with 6” long stones. I discover the engine is bored 30 over so at Summit Racing I tell them what piston type it is and how many grams it weighs. This is important so that all the piston weights are very similar. And I order a 40 over piston and ring set. Now, with a borrowed ‘snap’ gauge I hone the cylinder using a hand drill to the proper diameter and it looks just fine. :) Piston and rings arrive and I put them in and the engine back together and all is well. :) What a project but all worth it because this is the original engine.
Was it possible to escape from the Russian submarines through torpedo tubes in WWII?
“,Was it possible to escape from the Russian submarines through torpedo tubes in WWII?” “Escape” or “exit”? There’s a big difference. Escape means the sub is stuck on the bottom and you want to get to the surface. Exit means the boat may or may not be on the bottom, and you want to leave the boat as part of a planned evolution. OK, so what’s the difference? People. As in, how many people are required to make it happen? Here’s a hint. Look into any submarine escape trunk (pod). What do you see? Several valves, handles, and air connections. Both upper and lower hatches have hand-wheels to dog/un-dog the hatch (“dog” means to seal it). There are valves to drain (let water out), flood (let water in), and pressurize (equalize pressure in the trunk with the pressure outside the boat) the trunk. Compressed air connections to give you breathing air for your air mask and to pressurize your escape device (Steinke hood, escape suit, etc.) Escape trunk - Wikipedia Now look inside a torpedo tube. What do you see? Nothing. NOTHING. N-O-T-H-I-N-G! It’s a smooth tube with holes around the perimeter, used to force a torpedo out (eject). What does that mean? It means you need to take your air supply with you, and you need somebody else to operate everything to get you out. Shut the breech door. Dog the breach door. Shut the drain valve. Open the flood valve. Once the tube is flooded, shut the flood valve. Open the pressure valve. Once pressurized, open the outer door and muzzle door. NOW, you can swim out of the tube. If you are the only person alive in the compartment, or the last one to escape, sorry. You’re shit out of luck (a common submariner saying that is probably illegal in these Politically Correct days with women on submarines). THAT is why “exiting” through a torpedo tube is possible, and “escaping” through a torpedo tube is not. Here’s a little-known fact about torpedo tubes and submariners. Back story. Every once in a while, as part of routine maintenance and testing, a submarine will shoot some water slugs (yes, we knock them out, first <smile>). ????? “Shooting a water slug” means you do everything involved to shoot a torpedo, except the tube is empty (no torpedo in the tube). The water that is in the tube is a slug, and we shoot it out, using the ejection system (remember the holes I told you about? Water is forced into the tube with either a pump or a ram, to forcefully eject the torpedo. In the old, old days, they used compressed air to do that, until they (the designers and operators of submarines) realized that when that happens, the air goes out of the tube and up to the surface, so anybody on the surface with a working pair of eyeballs knows EXACTLY where the submarine is! Not too smart, right? So they designed an ejection system. Up until about 30 years ago, it used a ram. A huge cylinder with two pistons in the middle had water on one end and air on the other. The water side connected to the torpedo tube, through the holes in the tube. The air side had a connections for compressed air and vents. When you eject the torpedo, one side of the air piston is vented, and the other side is pressurized, which slams the piston to the stop. The water piston slams to the stop, forcing all of its water into the torpedo tube, ejecting the torpedo. Then, the air connections are reversed, and the piston slams back to the battery position, ready for the next shot. “BAM! BAM! WHOOSH!” in about a second or so. Yes, it’s very noisy, and can be heard from a long distance away by an enemy’s sonar system. So, they developed a quiet(er) system, using a pump. You spin the pump with compressed air, and the pump ejects the torpedo. “whoosh” Not nearly as loud, you have to be very close to hear it. So close, that if you’re the target, you won’t have enough time to evade the torpedo before it sinks you. Back to the water slugs. After shooting the slugs, SOMEBODY gets the job to “dive the tube” (climb into the tube with rags to dry it out) So, close your eyes and imagine this. You are climbing, head first, with you arms stretched over your head, into a 21″ diameter metal cylinder, that just happens to have a door past your feet that can be shut at any time, and there’s NOTHING you can do about it, if somebody shuts it. Which is why EVERY non-qual submariner-wanna-be is REQUIRED to dive the tubes once. Of course, being salty submariners, there are lots of cruel jokes and comments going back and forth while the non-qual squeezes into the tube. Is it scary? ABSOLUTELY. Do you learn to trust your shipmates? ABSOLUTELY. That’s the main reason it’s required. It helps the new guy bond with the rest of the crew. You HAVE to trust your shipmates, to survive, and they HAVE to trust YOU to do whatever it takes. So, back to the question. Did Russians in WWII escape this way? I never heard they did, but it’s possible, and Russians are crazy enough to do it, too. If anybody has documentation about it, I’d LOVE to read it! EDIT. To fellow submariners, please remember that I’m using old brain cells to remember my submarining days of 30+ years ago. If I made any mistakes, I apologize.
Why does Tata Altroz still have a 3-cylinder engine?
Greetings, Many companies like Tata, Ford, BMW, Opel, Nissan, Smart, Fiat etc..are using three cylinder engine based on requirements. Three cylinder engines are New and Future technology due to high ,Power to Weight Ratio,. Still there is lots of research and development in it to enhance benefits and reduce cons as described below. Pros: Cost Reduction:, ,Three Cylinder engines consumes less materials due to elimination of one cylinder, Piston, Spark plug, Injector, Connecting Rod, Four valves and also from downsized Engine block, Engine Head ,Engine cover, Oil sump ,Exhaust & inlet manifold, Crank & Cam shaft and electronics. Space :, ,Reduced engine size can gives more roomy hood or cabin areas. Fuel Efficiency: ,Increase in fuel efficiency through decreasing vehicle weight and Cylinder friction with some compensation in Performance Note : In modern engine, efficiency are more depend on ECU. Power to Weight Ratio:, ,Increased power to weight ratio than four cylinder engine. Cons: Thermal Management : ,When you extract more power from less number of cylinder, its heat up quickly so there will be increase in usage of coolant system. Noise Refinement:, ,Four cylinder engine are less complex in making refinement compared to Three cylinder engine (because of complex counter Mass and different firing pattern design). Since Four cylinder engine less noisy compared to three cylinder for the same power figures.The noise can be reduced by Proper sound insulation in required areas. Vibration:, ,Yes, Three cylinder, ,vibrates more than four cylinder due to large amount for energy release at each firing than four cylinder but not too much. Automotive industries uses various engine vibration dampers to reduce vibration influence in cabin. Myth Performance:, Three cylinder engine performs lesser than the four cylinder engine in acceleration. why ? because the each cylinder volume becomes larger hence it requires more time for flame propagation for the proper combustion. It is also possible to extract more performance for three cylinder engine - eg.,Nissan DIG-T R ,:, 400BHP 3-cylinder 1.5-liter turbo engine & weight -40 kg;, BMW i8- ,1.5-liter 3-cylinder 220BHP gasoline engine .,So never under-estimate three cylinder engine in performance, as performance depends mostly on Materials, Purpose and Technology used). Thanks Sridharan Subramani
Will thicker oil stop rod knock?
No. In fact, the thicker oil will have more trouble getting into the rod bearing channels. Best to search for a used engine before it throws a piston through your hood or oil pan.
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