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Brand new and already on the flywheel, I had a hold on the pressure plate as I was taking bolts out and it slipped by, landing right on the edge of a leg on the engine hoist.
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Apr 12, 2014 18:09
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| # ? Jun 11, 2024 21:37 |
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Namechange to Slim Slippins.
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Apr 12, 2014 18:11
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SyHopeful posted:Namechange to Slim Slippins. Clutch slippins.
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Apr 12, 2014 19:11
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Beach Bum posted:https://www.youtube.com/watch?v=eVmJ-bW7IpM
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Apr 12, 2014 21:45
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The N2O made it run super lean and probably melted half the engine. e: Happy now? Collateral Damage fucked around with this message at 11:50 on Apr 13, 2014 |
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Apr 12, 2014 22:15
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Collateral Damage posted:The NOS made it run super lean and probably melted half the engine. So you're saying it would work with a diesel?  Volunteers anyone ?
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Apr 12, 2014 23:34
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Diesels can use NOS just as petrol engines, with some major differences. To begin with you can't just inject diesel and NOS into the intake as you would in a petrol engine. The injected fuel would ignite far too early in the compression stroke, way before it should. Your engine will either basically stop dead or more likely break something expensive. Adding just NOS without extra fuel just wastes the nitrous since there isn't any extra fuel available for it to oxidize/burn, so it just gets thrown out of the exhaust. Doing this in a petrol engine would cause it to run lean, doing this in a diesel engine does nothing (besides wasting your precious nitrous). What you can do is either 1) Add propane together with the nitrous. Propane has a higher octane rating than diesel and will not ignite too early. This method is quite common and tried and tested. 2) Make the regular fuel system run rich as you inject the nitrous. All the idiots "rolling coal" could probably get quite the extra power by adding NOS, since black exhaust from a diesel is from running rich. Also of note is that if you add a lot of nitrous you still need to retard the timing as you do with a petrol engine, the difference being of course that timing in a diesel is adjusted by changing the injection timing (since injection = ignition in a diesel). I'm sure that was a joke and I simply sperged off for no reason, but whatever. The reason I know this is that my friends brother feels that 305hp/620Nm on the rear wheels on his BMW 335D isn't enough, and when we meet he's always eager to talk about his car and his plans for it with me. vvv --- Well, I'd prefer if they'd just pipe the exhaust into the cabin, thereby solving the problem in another way, but if they added NOS they wouldn't be "rolling coal" because all that extra fuel (that comes out as black smoke) would be burned instead, giving MORE POWA and less soot. Nidhg00670000 fucked around with this message at 00:49 on Apr 13, 2014 |
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Apr 13, 2014 00:16
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Nidhg00670000 posted:2) Make the regular fuel system run rich as you inject the nitrous. All the idiots "rolling coal" could probably get quite the extra power by adding NOS, since black exhaust from a diesel is from running rich. There's a special circle of hell for you if you're encouraging "rolling coal" dicks to add NOS. Even for just suggesting it as something they might benefit from. Captain Postal fucked around with this message at 02:10 on Apr 13, 2014 |
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Apr 13, 2014 00:41
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Slavvy posted:It's a really common design on older RWD vehicles in general, and on trucks/vans still. Every hilux and landcruiser I've seen has had a mechanically driven fan on the front of the water pump, as did BMW's until they went to a fully electric design. Toyota is at least thoughtful enough to run twin V belts on the fan/water pump combo on the hilux/landcruisers. Partly I suspect because it needs them for power transfer, partly for redundancy.
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Apr 13, 2014 00:57
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That poor LNF. 
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Apr 13, 2014 00:57
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Captain Postal posted:There's a special circle of hell for you if you're encouraging "rolling coal" dicks to add NOS. Even for just suggesting it as something they might benefit from. It will just get them off the street faster. Let em try, they are destroying their engines anyways. Nidhg00670000 posted:Diesels can use NOS just as petrol engines, with some major differences. Its easier to boost fuel and add more air than add nitrous to a diesel, I think we're safe.
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Apr 13, 2014 01:14
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NOS (Nitrous Oxide Systems) is a company (now owned by Holley) that specializes in nitrous oxide injection parts and systems. N2O is nitrous oxide, the gas that is injected by a nitrous system. You cannot inject a company into an engine. Please help me make the ringing in my head stop. 
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Apr 13, 2014 01:55
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Nidhg00670000 posted:To begin with you can't just inject diesel and NOS into the intake as you would in a petrol engine. The injected fuel would ignite far too early in the compression stroke, way before it should. How? I honestly don't understand how injecting something incredibly cold like N2O in a diesel would increase instead of decrease preignition.
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Apr 13, 2014 01:56
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Customer states vehicle was making a noice and died in our parking lot. Technician was unable to start the vehicle. Hm.  Think I found it. 
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Apr 13, 2014 02:04
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^^ For once you can actually trust the customer's report of the vehicle "dying" in the parking lot. Seems pretty literal to me.SyHopeful posted:How? I honestly don't understand how injecting something incredibly cold like N2O in a diesel would increase instead of decrease preignition. It's the extra diesel that is the problem not the N2O here. The N2O requires extra fuel to burn, though. On a gas engine you can just shoot extra gas in along with the N2O and it only burns when the spark hits it unless boost goes too high for the octane rating and compression ratio of the engine. On a diesel, the whole point is that ignition happens due to compression, so if you inject diesel along with the N2O as you would on a gas engine... it preignites whenever the hell the compression sets it off, which could be well before TDC, which is BAD. kastein fucked around with this message at 02:09 on Apr 13, 2014 |
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Apr 13, 2014 02:05
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13 INCH DICK posted:Customer states vehicle was making a noice and died in our parking lot. Technician was unable to start the vehicle. This is like teasing. C'mon now.
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Apr 13, 2014 02:06
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13 INCH DICK posted:Customer states vehicle was making a noice and died in our parking lot. Technician was unable to start the vehicle. Magnificent.
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Apr 13, 2014 02:07
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Nidhg00670000 posted:vvv --- Well, I'd prefer if they'd just pipe the exhaust into the cabin, thereby solving the problem in another way, but if they added NOS they wouldn't be "rolling coal" because all that extra fuel (that comes out as black smoke) would be burned instead, giving MORE POWA and less soot. True, they wouldn't be dicks who "roll coal", but they'd still be dicks. So I say you shouldn't (unwittingly) encourage them. Unrelated fact: The best way to really piss off 'dem fag tree huggers is to prove that global warming is total LIEberal bullshit by piping your exhaust directly into your cab. Those hippies fuckin' hate that. Nidhg00670000 posted:Well, wouldn't that just make them ordinary "car enthusiasts"? Nidhg00670000 posted:I'm sorry, don't you mean LIEberal? Captain Postal fucked around with this message at 02:42 on Apr 13, 2014 |
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Apr 13, 2014 02:12
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MrYenko posted:NOS (Nitrous Oxide Systems) is a company (now owned by Holley) that specializes in nitrous oxide injection parts and systems. Yeah, my bad. I blame watching F&F while being bedridden for almost three days with tonsillitis and accompaning migraine. SyHopeful posted:How? I honestly don't understand how injecting something incredibly cold like N2O in a diesel would increase instead of decrease preignition. What kastein said. Captain Postal posted:True, they wouldn't be dicks who "roll coal", but they'd still be dicks. So I say you shouldn't (unwittingly) encourage them. Well, wouldn't that just make them ordinary "car enthusiasts"? Captain Postal posted:Unrelated fact: The best way to really piss off 'dem fag tree huggers is to prove that global warming is total liberal bullshit by your piping exhaust directly into your cab. Those hippies fuckin' hate that. I'm sorry, don't you mean LIEberal? 
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Apr 13, 2014 02:27
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kastein posted:^^ For once you can actually trust the customer's report of the vehicle "dying" in the parking lot. Seems pretty literal to me. So a lower A/F ratio in a diesel can directly lead to preignition? Or does the N2O make that possible? Man I know so little about diesels.
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Apr 13, 2014 02:31
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SyHopeful posted:So a lower A/F ratio in a diesel can directly lead to preignition? Or does the N2O make that possible? Man I know so little about diesels. You should probably re-read what I posted... that's not what I said at all.
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Apr 13, 2014 02:35
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N2O adds oxygen, raising the A/F mixture, not lowering it
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Apr 13, 2014 02:36
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SyHopeful posted:So a lower A/F ratio in a diesel can directly lead to preignition? Or does the N2O make that possible? Man I know so little about diesels. Diesels compress air, thereby heating it up to create an environment that will ignite the diesel fuel when injected. The Nitrous Oxide would cause pre-ignition because it would not reach TDC (where the diesel itself would be injected) before igniting, causing it the engine to reverse direction with disastrous results.
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Apr 13, 2014 02:38
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SyHopeful posted:So a lower A/F ratio in a diesel can directly lead to preignition? Or does the N2O make that possible? Man I know so little about diesels. A/F ratio has nothing to do with it. Only air enters the combustion chamber. The air is then compressed, this compression heats the air. Roughly around TDC of the compression stroke, fuel is injected directly into the combustion chamber. The fuel is then ignited by the heat from the compressed air. If you already have fuel in the air coming in through to intake, it will ignite before the regular fuel introduction, causing pre-igintion, which is bad. In an N2O system on a petrol car, you usually add extra fuel along with the N2O. In a diesel you can't do this, for reasons as above. vvv --- Propane-N2O systems aren't super uncommon, but I agree that there are a lot easier ways to add power to a modern diesel. This whole derail was from me taking cakefools joke seriously. Sorry. Nidhg00670000 fucked around with this message at 02:56 on Apr 13, 2014 |
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Apr 13, 2014 02:41
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The way to PROPERLY inject N2O into a diesel is to do so with it mixed with water vapor at low volume. But the power gains with water-methanol injection are much better and easier than N2O with a diesel anyways, so its rather moot. Once again, you can get more power from a diesel easily with bigger injectors and a larger forced air solution than the N2O is going to give you, and you can do it cheaper and safer for the motor.
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Apr 13, 2014 02:52
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CommieGIR posted:The way to PROPERLY inject N2O into a diesel is to do so with it mixed with water vapor at low volume. All the 1000hp guys run w/m, nitrous, AND propane. Then again, they also blow their engines up all the time.
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Apr 13, 2014 02:58
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Powershift posted:All the 1000hp guys run w/m, nitrous, AND propane. They also know that they will blow up the engine a lot. Its part of the risk of making that much power using additives like propane, water-methanol, and nitrous, like you said 
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Apr 13, 2014 03:07
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kastein posted:I don't work as a mechanic, I sit at a desk and design PCBs/write firmware all day. I do this poo poo for fun (there's something wrong with me...) and therefore workmans comp doesn't really help much. A while back, but at Boy Scout summer camp about 20 years ago, I was playing soccer in a large campsite and clotheslined myself across my left eye on bailing twine some shitheel strung between two trees. My open eye slid about a foot along the rough-as-gently caress twine and all I could feel was searing pain in my left eye. Doc had to pull some pieces of thread out of my eye and I wore a patch for a week, but I still see fine out of that eye. To this day, there is scar tissue connecting my eye to my eye socket on the far left side of my left eye. Every new eye doc has to say something about it.
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Apr 13, 2014 03:09
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Apr 13, 2014 03:43
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Well, it's a mechanical success for the designer of the pipe, at least. 
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Apr 13, 2014 03:49
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drat, and I thought putting a piece of 3/4" iron pipe through one of the tires on the 5 ton (ran over the corner marker post of my property, didn't notice it buried in the underbrush) sucked. I'd hate to be the guy who has to pay for the new tire, or the guy who has to install it.
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Apr 13, 2014 03:57
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kastein posted:You should probably re-read what I posted... that's not what I said at all. So more air and fuel than designed in a diesel can cause preignition, because there's more volume being compressed and therefore it hits its ignition point earlier in the compression stroke? Snowdens Secret posted:N2O adds oxygen, raising the A/F mixture, not lowering it I know this much. kastein said the extra fuel is the problem, I'm trying to understand why. N2O serves the same basic function as a turbo or supercharger but diesels love boost, so what makes N2O different is what I'm apparently failing to grasp.
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Apr 13, 2014 04:13
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SyHopeful posted:So more air and fuel than designed in a diesel can cause preignition, because there's more volume being compressed and therefore it hits its ignition point earlier in the compression stroke? No no no, you are missing entirely: Diesel fuel is not present in the air like gasoline is in the air of a petrol car. Diesel Cycle: Intake (Air Only) Compression Injection of Diesel Fuel and Ignition Combustion Exhaust. The diesel fuel is injected AFTER the air is taken in and compressed. If the diesel fuel was added during intake, it would never reach TDC and detonate, once again reversing the engine direction catastrophically. Adding the N2O would enrich the oxygen in the air to the point where it could self-ignite when compressed and heated, never getting to the point where diesel would be injected. You can get around this in a couple different ways, but mostly through accurate metering of air/N2O enrichment so that the N2O does not exceed the quanity of normal O2 pulled in. Propane is used as a suspension to seperate the N2O molecules so they will not pre-ignite (ironically, given the flammability of propane). CommieGIR fucked around with this message at 04:19 on Apr 13, 2014 |
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Apr 13, 2014 04:16
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Stop thinking about the N2O at all, it's WHY you need to put more fuel into the engine as well, but it has no part in causing the preignition. Preignition in this case is caused by putting diesel into the engine before the injectors fire (because you're trying to bring it in along with the charge air.) Diesels work by compressing the charge air to well above the point that will cause self ignition when the fuel is injected by the injector; then you just inject the fuel when you want it to ignite. If you put diesel into the charge air, it ignites at some uncertain point prior to then - depending entirely on when the fuel hits the flash point for the given cylinder pressure it's presently at. This could be significantly before TDC, which is going to try and turn the engine the wrong direction when it's already turning pretty quickly the right direction, which only ends in sadness, crushed bearings, lunched pistons, and "customized" cranks and connecting rods. That's why they typically put propane in with the charge air on nitrous injected diesels, as mentioned - propane has a high enough octane rating that it won't preignite, so it just goes along for the ride with the nitrous and charge air, then burns along with the fuel when the fuel gets injected and instantly starts burning.
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Apr 13, 2014 04:17
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Edit:kastein posted:Stop thinking about the N2O at all, it's WHY you need to put more fuel into the engine as well, but it has no part in causing the preignition. Is my post VVV (didn't see your post before I replied) more accurate, then? CommieGIR posted:No no no, you are missing entirely: Diesel fuel is not present in the air like gasoline is in the air of a petrol car. So the compression stroke superheats the air and at TDC the fuel is injected, which is ignited by the hot air. Do I have it now? I'd always thought that the fuel was injected before TDC, so that the air and fuel were mixed pre-TDC. SyHopeful fucked around with this message at 04:21 on Apr 13, 2014 |
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Apr 13, 2014 04:18
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^No mixing necessary, there's enough heat to ignite the initial charge, which releases more heat, and there's always extra air so you will always get a clean burn, which is the purpose of pre-mixing in a gasoline engine. I think people are assuming it'd be a wet shot system like a gas engine, where extra fuel is injected by a dedicated injector alongside the N2O. I imagine the ideal setup on a diesel would be to do a dry shot (N2O only, no fuel) and then program the computer to add extra fuel when you hit the shot to take advantage of the extra oxygen content.
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Apr 13, 2014 04:19
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SyHopeful posted:So the compression stroke superheats the air and at TDC the fuel is injected, which is ignited by the hot air. Do I have it now? Yup, thats how it works. Fuel is injected at roughly 0.1- before TDC, but VERY close to exact TDC to maximize the efficiency of work. The fuel burns right when it enters the air, they are mixed by a 'burn bowl' on the piston that encourages the diesel fuel to mix more efficiently with the air. On an indirect injection diesel, the air/fuel is initiated in a pre-chamber and then the resulting gas is directed into the cylinder. 
CommieGIR fucked around with this message at 04:23 on Apr 13, 2014 |
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Apr 13, 2014 04:20
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CommieGIR posted:Yup, thats how it works. Fuel is injected at roughly 0.1- before TDC, but VERY close to exact TDC to maximize the efficiency of work. Okay. I got it now, thanks fellas. 
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Apr 13, 2014 04:22
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Discussions like this are why I love this drat forum.
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Apr 13, 2014 04:27
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| # ? Jun 11, 2024 21:37 |
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I'm sorry for this everyone. Here's a cool animation of a simulation of fuel being injected in a diesel. It's not a mechanical failure. 
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Apr 13, 2014 04:28
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