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Yup, sounds like Enfield.
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Jun 20, 2013 02:14
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Fucknag posted:Charge cooling isn't really critical on supercharged engines. Most of the heat in turbo cars comes from the blazing hot exhaust turbine. Considering they're sucking cold air before it's compressed, they're probably fine as long as they're not running insane amounts of boost. I am sorry, but the ideal gas law says you are wrong. PV = nRT is difficult to escape. Unless pressure is mostly increasing at the same ratio volume is decreasing, but then what's the point of a turbo? You'd end up with the same mass of air flowing in. (this is where someone who knows more about chemistry and thermodynamics than me, or at least knows more than the ideal gas law and knows what the word adiabatic means comes in and shoots holes in my argument  ) (click for big) kastein fucked around with this message at 02:25 on Jun 20, 2013 |
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Jun 20, 2013 02:23
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Yeah, the act of compressing the air is where most of the heat comes from. I'm guessing you see some non-intercooled supercharged cars because they are operating at lower pressures in the 5-8psi range vs a turbo car that is often more like 15-20. Additionally, when you start operating outside of peak efficiency of a compressor you really start to add heat.
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Jun 20, 2013 02:40
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As gas is compressed it becomes hotter and hotter, and if you don't have an intercooler setup on your supercharger then it'll get too hot and give you anything from loss of power to preignition and knocking. At least, this is what I know affects LSJ's. edit: Yeah, after 8lbs you need an intercooler or your intake temps are way too high and start to cause problems. The colder the air the better; more dense and rich in oxygen.
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Jun 20, 2013 02:41
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e: I think I'm a dumbass and blind, rather.
Slavvy fucked around with this message at 03:38 on Jun 20, 2013 |
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Jun 20, 2013 02:45
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Belt-driven superchargers like that don't tend to make the same amount of boost that turbochargers do and don't suffer from exhaust heat exposure. The charge temperature is higher than a NA engine but it's not so high that you can't just run higher octane fuel to compensate, or do water/meth injection.
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Jun 20, 2013 02:46
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Roots superchargers are very inefficient so heat is a big problem when they really start working. At low pressure differentials, they aren't that bad. A rotary is small enough that this relatively large supercharger might still be in one of the good efficiency islands--up to a 1.5 pressure ratio or ~7psi or so at moderate rpms is at the 75% island. Water or meth injection would certainly help. Maybe it'll be the first rotary with torque.
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Jun 20, 2013 04:16
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So Toyota's new chairman said something last week about wanting to make a Supra again, and I was doing the math on the MKIV TT and realized it cost about 75k in today's dollars. I wonder how they'd package and price one today. It seems to me that 50kish would be the sweet spot, above the IS but not stratospheric. I can't think of any amazing 4 cylinders in Toyota's line up right now, but a turboed 2GR could maybe get them to 500 horse, or UR closer to 6. Of course, since the SC concept from last year is supposed to go into production, it could be that it fills the Supra shoes instead. Too bad whatever comes won't look like the last one.
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Jun 20, 2013 05:37
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Taking the price of the base Camry in 1997 ($19,868) and the price of the base 2013 Camry ($23,030) we see about a 16% increase. If you adjust the price of the base 1997 Supra Turbo ($39,990) up 16%, it's $46,284.
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Jun 20, 2013 05:52
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blk posted:So Toyota's new chairman said something last week about wanting to make a Supra again, and I was doing the math on the MKIV TT and realized it cost about 75k in today's dollars. I wonder how they'd package and price one today. It seems to me that 50kish would be the sweet spot, above the IS but not stratospheric. I can't think of any amazing 4 cylinders in Toyota's line up right now, but a turboed 2GR could maybe get them to 500 horse, or UR closer to 6. Of course, since the SC concept from last year is supposed to go into production, it could be that it fills the Supra shoes instead. I always wondered why they couldn't just take the 1GR, which is capable of easily making a healthy 320hp or so NA, mate it to the six speed manual as found in the IS250, and put it in a coupe body that doesn't suck too much. It isn't rocket science, nissan and hyundai have perfectly grasped this concept.
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Jun 20, 2013 08:05
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A 1997 Supra had about the same power as the contemporary Camaro Z28 with the LS1, even looked kind of similar, with T-tops and everything. Sure it was probably a better car is some ways but it was also 25% more expensive and they sold like death. Nowadays a mid $50k will get you a Camaro ZL1, which is putting out 600hp and will run with 911s on the track. The Yen despite the recent devaluation is still significantly above where it was in 1997 which will make things even harder. However I think they can do it, they just have to take the same route as the Camaro and Challenger is taking. Use a full size RWD car platform as a basis, maybe the Crown or the Mark X, build them at the Tundra plant in Texas and use the Tundra engines, a V6, a V8 and a supercharged V8 range topper. The Supra today thanks to the F&F movies has the brand cachet it didn't have 15 years ago, it will sell in the numbers to make it economical, and that generation of buyers is starting to enter their high earning years.
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Jun 20, 2013 08:33
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Throatwarbler posted:The Supra today thanks to the F&F movies has the brand cachet it didn't have 15 years ago, it will sell in the numbers to make it economical, and that generation of buyers is starting to enter their high earning years. loving  It'd cost twice what the gt86 costs and have to sell at least as many. F&F fans don't buy ZR1s and Cayman, they buy civics and jettas. 
cakesmith handyman fucked around with this message at 09:20 on Jun 20, 2013 |
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Jun 20, 2013 09:10
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Cakefool posted:loving I mean make a range of them from $30k to $60k, give the cheap one the base V6 engine just like the Mustang or Camaro. A reminder that Toyota (not some aftermarket poo poo, actually Toyota) already sells a fully warranteed supercharger kit for the iron block 5.7l V8 that takes the power to 500hp, using the same supercharger as the ZL1/CTS-V. It's certainly a stout engine and would be good in a car. https://www.youtube.com/watch?v=Bb9MNYFwUFA
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Jun 20, 2013 09:25
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wallaka posted:Roots superchargers are very inefficient so heat is a big problem when they really start working. At low pressure differentials, they aren't that bad. A rotary is small enough that this relatively large supercharger might still be in one of the good efficiency islands--up to a 1.5 pressure ratio or ~7psi or so at moderate rpms is at the 75% island. Water or meth injection would certainly help. Yeah, this is why Top Fuel and Funny Cars run excess fuel through the system. When you see one staging and it looks like vapor or smoke coming out of the exhaust, that's raw fuel. They don't run intercoolers and use extra nitromethane to cool the engine. Thermodynamics don't give a gently caress what type of power adder you use, poo poo's gotta get hot when you make power.
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Jun 20, 2013 12:28
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Nitromethane is already a coolant, the extra at idle is because it's very inefficient until you can put some heat in to the combustion chamber. (That is my experience with meth fueled four cylinders.)
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Jun 20, 2013 12:47
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McTinkerson posted:Technically this could also go in the RADL thread, but it suits the spirit of this one better I come to this forum to look at pretty cars, someone explain to a mechanical retard what's going on here. I'm seeing a rotary with a massive loving supercharger bolted onto it. How does that even work?? For content, something that I want very dearly: 
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Jun 20, 2013 12:59
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88h88 posted:I come to this forum to look at pretty cars, someone explain to a mechanical retard what's going on here. I'm seeing a rotary with a massive loving supercharger bolted onto it. How does that even work?? Engine runs, engine spins supercharger, supercharger compresses air, more air enters combustion chamber, more fuel is added, more power is made. I guess the reason you don't see more superchargers on rotaries is that they cause parasitic drag, which is murder on a low-torque engine, and because rotaries work over a large rev range.
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Jun 20, 2013 13:08
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Awesome, thank you! 
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Jun 20, 2013 14:19
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kastein posted:
Post Glowing Turbo/Headers Time!     
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Jun 20, 2013 14:20
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The M62 SC on the LSJ pushes 12psi and uses a tiny intercooler pumper. Once you start adding smalley pullies it is prone to heatsoak so you can buy a bigger intercooler and either run it in tandum with the IC pump or bypass the IC pump directly.
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Jun 20, 2013 14:24
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NitroSpazzz posted:Post Glowing Turbo/Headers Time! https://www.youtube.com/watch?v=VUWCo3lDjH8 1000 Horsepower XR6 Turbo motor glowing nicely
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Jun 20, 2013 14:30
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I couldn't decide between this thread or the other one. It's not really a horrible failure because I see it around all the time so it must be somewhat reliable. On the other hand the bungie cord holding the gas tank on looks pretty safe 
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Jun 20, 2013 22:07
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After a long internal debate, I decided to post this here instead of the terrible thread, because it takes a bit of insanity to do this to a minivan, and it didn't look terrible. Red brake drums matched the paint. Couldn't quite get them in the picture, but the tail lights were smoked like the front turn signals. No stupid stickers on the back either.
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Jun 22, 2013 02:01
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Jun 22, 2013 02:26
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 1979 Mustang rally concept styled by Ghia blk fucked around with this message at 07:20 on Jun 22, 2013 |
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Jun 22, 2013 05:18
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Instagram video link, this car is so beat up it's actually the coolest thing I've ever seen. Can anyone tell me what it is because I'm pretty sure I've found my dream car...? http://instagram.com/p/a15kxeRxuB/?igref=ogexp
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Jun 22, 2013 08:06
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88h88 posted:Instagram video link, this car is so beat up it's actually the coolest thing I've ever seen. Can anyone tell me what it is because I'm pretty sure I've found my dream car...? I couldn't remember, but first hit for "concave rear window" got a winner: http://www.curbsideclassic.com/blog/time-to-unwrap-the-wrapped-car-unwrapped-virtually/
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Jun 22, 2013 10:05
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My wife and I have been in Maine the last week visiting a good friend of mine. He happens to race in a running rebels stock car class at a local paved circle track so my wife and I became his honorary pit crew. It's a '92 CRX chassis and body, engine, etc. Here's the owner and my wife: Making some toe adjustments between practice sessions:  Here are most of the cars in his varsity class:  I'm not licensed for the track but I still went out for a few practice sessions with the JV group. It was a loving blast. It was the first time I ever 1. drove a stock car and 2. ever drove on a paved circle track.  Bonus utter destruction of one of the pickups in the truck series. It was so badly destroyed that we had to rally eight dudes to get the rear end up onto the trailer.  That was a really great experience.
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Jun 22, 2013 22:01
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Remember when that Edo Competition Ferrari Enzo crashed at the Targa Newfoundland a couple years ago? It's been rebuilt, has apparently over 900HP now - I saw it today, and it's the goddamn meanest sounding mother loving car I have ever heard.  Ferrari Enzo ZXX by tylerhuestis, on Flickr neckbeard fucked around with this message at 13:41 on Jun 23, 2013 |
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Jun 23, 2013 01:08
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Is that two pairs of shades? Owns.
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Jun 23, 2013 04:07
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Was on my way out to Minneapolis yesterday and came across this:
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Jun 23, 2013 06:12
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Feast your eyes upon the 1966 Volvo P1800. Single owner, original transmission and rear end, engine rebuilt twice. Three million miles.
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Jun 23, 2013 06:19
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This is absolutely the SR-71 of recreational vehicles. kimbo305 posted:Is that two pairs of shades? Owns. You've never asked your girl to hold your shades? That circle track CRX looks like a poo poo ton of fun. Speaking of fun CRXes, I got to race with this guy once:  https://www.youtube.com/watch?v=Rhu-A9hIOPI He also won that SPEED channel show "Setup."
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Jun 23, 2013 06:23
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Stardotstar posted:This is absolutely the SR-71 of recreational vehicles. That motherfucker can drive though. I gotta root for ITRs by default but the way he forced the ITR driver offline so he could pass was gorgeous. That was a pretty good dogfight in general too.
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Jun 23, 2013 16:15
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Paul Boz, you guys drive up? You should stop by Mass for some goony car poo poo before heading back home.
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Jun 23, 2013 19:30
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Saw this at a True Value Hardware today, never seen this Porsche before. Could I get an ID on it? 
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Jun 23, 2013 19:54
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928. http://en.wikipedia.org/wiki/Porsche_928
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Jun 23, 2013 19:58
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Coronet XX posted:Saw this at a True Value Hardware today, never seen this Porsche before. Could I get an ID on it? Looks like a 928. 
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Jun 23, 2013 19:59
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Coronet XX posted:Saw this at a True Value Hardware today, never seen this Porsche before. Could I get an ID on it? 928. The most expensive regular production car (inflation corrected) ever made by Porsche, although this line is blurring a bit now with GT2/GT3s becoming kinda "regular." They sound fantastic and are really comfortable. It's a bad rear end highway cruiser and can still move on the track and in the twisties. This was rumored to have been initially designed as a 911 replacement. Obviously that didn't happen.
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Jun 23, 2013 20:01
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928's also have pop-up lights and pop-up lights are awesome AI poo poo
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Jun 23, 2013 20:08
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