well slmbed civic knows my motor weve been talking and also i not sure if that is reachable but its a goal
forgive me, i interchange the words piston and cylinder, meaning the piston. hope that clears something up. adding a turbo simply doesnt increase engine efficency. when your off boost, your intake manifold is running in a vaccume, just like a n/a motor. the only difference is that there is a turbine in the intake tract, and a turbine in the exhaust tract that are restricting air flow. if an off boost turbo increased efficency, then why dont the super high mpg cars run turbos? dont you think the engineers of the honda insight or toyota prius would slap a turbo on their engines if thats all it took to increase gas mileage? i was not talking about the domed, dished or flat surface of the head, i was refering to the top of the piston. head shapes are hemisphereical, pent roof, semi-hemi, etc. i know nothing? coming from you thats one of the most meaningless things ive ever heard. you say i contradict myself in my posts, ok quote me. what exactly did i contradict? you say that several times, yet you say no specific contradiction. oh and i dont like anime and i dont like cartoons. and im keeping this thread going because your still spitting out totally incorrect information.Originally posted by "BioHazard"
lol wow i feel some hostilaty...so first off, this is a FAQ page, it goes for all turbos not just there turbos, so the way your saying it you should become their main marketer man, becuase you know so much. So shot that idea to S**t. and lol cylinders have niehter a top nor bottom there have just walls, lol have you even seen a engine?? i believe what your talking about on the domed or flat surface is the head...im not that stupid...lol its quite funny to me since this post of yours is in straight contradiction to your last post, which makes me think you know less than i supposedly know...maybe before you reply you should go back to your last posts so you can not make it look like your idiot who knows nothing and say one thing and then come back and in YOUR own post go on and on about how you previously said is wrong LOL your a FRIGGIN IDIOT, you should go back to your stupid little anime and continue pleasing yourself to little animations of women
What the f**k did that have to do with anything?Originally posted by "BSeRiEsHaTcH69"
well im a noobie here but i know a shitload about cars. a turbo will not increase mpg. anytime more air is forced into a cylinder, more fuel MUST be added to compensate or else detonation meaning compression WITHOUT ignition will occur. now lets go to a different for of forced induction, nitrous. a typical dry nitrous kit sprays nitrous into the intake tract and the fuel injectors will compensate for this increase in volume of air. a direct port nitrous injection system will mix fuel and air into a more homogeneous mixture making it dense and easier to burn. i bet you dont know what an octane rating is. octane is the "anti-knock" rating, simply put. it is harder to burn therefore meaning it is harder for an engine to detonate. then you say to yourself, how does it make more power? the ECU senses the higher octane fuel and compensates by increasing the timing, letting the air/fuel mixture get ignitited before the cylinder reaches Top Dead Center on the ignition stroke. nuff said. im done with this dude.
Joe
Very true, but it retards timing based on the pinging which isn't really reading the octane. I do know what you are saying though and you are right, but that in no way helps performance as mentioned by someone else earlier.Originally posted by "handlebarsfsr"
octane rating is a ratio of octane- 8 molecule carbon chains to heptane- 7 molecule carbon chains. heptane is a very unstable fuel, and it burns very quickly and very easily. octane is far more stable, it takes a high tempature to begin combustion, and it burns (relatively) slowly. the lower the octane rating of a fuel, the faster the mixture burns, and the easier it is ignited. this is contrary to popular belief that higher octane means faster burning. the way higher octane makes higher performance is in the way the engine takes advantage of its resistance to knock. an engine set to run on 87 octane must have retarded ingnition timing and lower compression to safely run the unstable fuel and prevent detonation, which is when the mixture is hot enough and under enough pressure to ignite without the spark plug firing. this is bad. really bad. with higher resistance to detonation, engines can use a higher compression ratio to get more energy out of the charge, run more advanced ignition timing, or run more boost. so if you put 93 octane in a car designed for 87, you actually lose a bit of performance, because the spark timng is optimized for the faster burning fuel. but its extra insurance against detonation.
turbozinc- your semi-correct, the engine does not read the fuels octane to adjust timing. but any car with a knock sensor, and that is optimized for 91+octane, will ping a bit with 87, and the ecu will retard ignition timing a bit to compensate for the faster burn. in effect, changing timing for the octane you put in.
turbo choice depends on your power goals, where you want the powerband to be, and how much your willing to spend. a hybrid on a stock motor is pretty much overkill. those turbos can carry boost efficently to almost 20psi, and they spool up slowly if your only going for say 6-9 psi. a 14b, t25, t28, t3 or any other small turbo would be better choices on a stock bottom end, as they will spool up much quicker and give you max hp and torque lower in the powerband, and carry max boost for more of the rpm range.Originally posted by "sik_civic"
wow dudes thats alota technical read the 1st post but yea so wud a t3/t4 turbo be good with a b18c1?
franken motors like ls/vtec raise compression significantly, and dont work very well unless they are fully and professionally built up. if money is a concern, doing a d16z6 or y8 turbo is significantly cheaper than a b, parts are easy to find and are cheaper than b series parts, and if it breaks, you can usually find a new motor for free or for very little money. they also make very good hp and torque. dont rule out the d.Originally posted by "99ExCoupe"
B18C1's are actually really a motor built to be tuned as a N/A motor. B18A/B's love boost, and have good tranny's for turbos. Save your money and get a B18B...and if ya miss vtec that bad....do a B16A2 head swap.
is the d a better motor than the b? no. but unless your building an all out drag car, you can almost always go faster for less money with a d than a b. you dont have to pay to swap a b into a civic (barring the 99-00si) they are cheaper to build, cheaper to find turbos for, and if something breaks, far cheaper to fix or find parts for. you can walk into most shops that do engine swaps and walk out with a complete d series motor and tranny for free, or for very little. b's are very expensive to buy, expensive to fix, and hard to find cheap parts. concidering it runs at least 3 grand for a b16 swap (thats price of motor, shipping, and all the new parts it needs- belts, water pump, clutch, etc) and almost 4 for a b18c, and that only nets you a 14 sec. car. you can run a junkyard turbo kit, made of a hf manifold and dsm turbo parts for well under a grand and be well into the 13's on a d. for the cost to turbo the b, you can build the bottom end of the d up and run more boost. pretty much no matter how you budget it, if you spend the same amount of money on both cars, one with a d and one with a b, the d will almost always be faster.Originally posted by "99ExCoupe"
Theres only so far you can go with a D series. The B series has alot more going for it...in my opinion. I have seen 9 second civics with a D series...its possible...but I guess I am just not an advocate of building up a D and spending a hell of alot on a motor I really don't like.