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General Wiggles posted:
https://www.youtube.com/watch?v=KLTxwpsj3Y4 e: top of page, have an e30 one. 
GentlemanofLeisure fucked around with this message at 19:48 on Dec 7, 2013 |
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Dec 7, 2013 19:46
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General Wiggles posted:
Proof that tumblr is still only useful for porn. 
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Dec 7, 2013 19:59
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leica posted:It's hilarious to want to drive a car without dying in a fire?
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Dec 7, 2013 20:01
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GentlemanofLeisure posted:Chris Harris recently drove one of those, its on /Drive on youtube. The sounds that car makes. Clearly I have chosen the wrong path in life. I want to drive that thing to work, through rush hour and everything.
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Dec 7, 2013 20:48
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Dec 7, 2013 21:51
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I have no idea where these came from, I found them while browsing randomly on Imgur. 
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Dec 8, 2013 14:53
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anonumos posted:The best F1: Best. V8 Supercars today too. 
BurgerQuest fucked around with this message at 15:16 on Dec 8, 2013 |
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Dec 8, 2013 15:13
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Pretty mesmering this gif
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Dec 8, 2013 15:44
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KozmoNaut posted:I have no idea where these came from, I found them while browsing randomly on Imgur. Can it do this tho? https://www.youtube.com/watch?v=BFs9mjPauus
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Dec 9, 2013 00:02
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This turned out in front of me coming home from the grocery store: That V10 does sound glorious. They were really winding it out, even in traffic, but when they first dropped the hammer turning at that light... 
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Dec 9, 2013 00:51
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Dec 9, 2013 01:59
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Shhhhiiiiiii
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Dec 9, 2013 04:02
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anonumos posted:The best F1: The purple tinge of this years car is nice.  Love the Redbull DTM cars 
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Dec 9, 2013 05:41
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Not too many of these left on the road:
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Dec 9, 2013 10:15
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Boomerjinks posted:Shhhhiiiiiii Neo as a bird
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Dec 9, 2013 15:11
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There are not enough 60* V8s in the world.  quote:Volvo 2014 V8 Supercar engine makes its debut at Sydney 500
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Dec 9, 2013 18:48
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Throatwarbler posted:There are not enough 60* V8s in the world. I need that in a Volvo 245.
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Dec 9, 2013 18:59
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IOwnCalculus posted:I need that in a Volvo 245. I was just thinking Amazon.
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Dec 9, 2013 19:05
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That rally heaven video posted a few pages back reminds me of myself when I got to meet with Ari Vatanen and learning that my grandpa is actually pals with Hannu Mikkola and Timo Mäkinen. And heres a couple more of rally photos Ive taken http://imgur.com/a/TPfFD, I have a huge bunch of these, should I make imgur albums for these or hotlink them to the thread?
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Dec 9, 2013 19:52
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Best Interior Ever? In this: http://en.wikipedia.org/wiki/Monteverdi_Hai_450 I'd totally drive around with the engine cover off.
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Dec 9, 2013 20:25
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Mighty Horse posted:Best Interior Ever? Where every attempted conversation quickly dies with a series of "WHAT?!"s. Glorious
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Dec 9, 2013 20:30
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This is why you should never claim we've hit peak AI - it can always get more insane.
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Dec 9, 2013 21:42
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It honestly looks like one of the most accessible engine "bays", must be fun to work on and comfy too. Plus you really wouldn't need to worry about heat in the winter, who needs a stupid heater core anyway?
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Dec 9, 2013 21:51
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Bajaha posted:It honestly looks like one of the most accessible engine "bays", must be fun to work on and comfy too. Plus you really wouldn't need to worry about heat in the winter, who needs a stupid heater core anyway? I noticed the lack of vents in the dash and drew the same conclusion
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Dec 9, 2013 21:52
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Throatwarbler posted:There are not enough 60* V8s in the world. Does anyone know how they're establishing horsepower parity between the DOHC 32V Nissan, merc and Volvo engines and the pushrod 16V ford and holden engines?
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Dec 9, 2013 22:10
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There's no replacement for displacement!
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Dec 9, 2013 22:20
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They're all 5.0L...?
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Dec 9, 2013 22:31
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Don't know about V8 supercars but usually it is achieved with intake restrictors. Almost surefire (not including TTE) way to limit a car to a desired number of horsepower.
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Dec 9, 2013 22:37
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Slavvy posted:They're all 5.0L...? Yes but for a given bore and stroke, it's a lot harder to get pushrod motors to rev higher (and make more power) compared to OHC; that big flexible rod wants to bend when the forces get high enough, and just using a thicker, stiffer one increases the valvetrain mass the engine has to move. It takes some serious work to even it up. I don't have time to look right now, but look at the development costs for NASCAR engines, which are all pushrod.
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Dec 9, 2013 22:42
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rscott posted:There's no replacement for displacement! Except when you turn the engine faster and have ITBs trumpeting glorious induction sound 
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Dec 9, 2013 22:46
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Fucknag posted:Yes but for a given bore and stroke, it's a lot harder to get pushrod motors to rev higher (and make more power) compared to OHC; that big flexible rod wants to bend when the forces get high enough, and just using a thicker, stiffer one increases the valvetrain mass the engine has to move. It takes some serious work to even it up. I don't have time to look right now, but look at the development costs for NASCAR engines, which are all pushrod. I know all that, I was asking in the sense of how do they make the engines all make the same power. V8SC is practically a one-make race series, they all have a control chassis and so on so they must have some measure In place. The DOHC Nissan and euro engines would theoretically make way more power than the pushrod holden/ford mills, so they must have some manner of restriction. DoLittle posted:Don't know about V8 supercars but usually it is achieved with intake restrictors. Almost surefire (not including TTE) way to limit a car to a desired number of horsepower. Doing this would be questionable, I think, because there would be endless arguments about how much restriction is too much. I'd be interested to know either way.
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Dec 10, 2013 03:17
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This guy's pretty good with photoshop. I like a lot of the other stuff in his collection. Mighty Horse posted:Best Interior Ever? Good Lord - a mid-mounted 426 Hemi? Wow.
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Dec 10, 2013 03:55
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Darchangel posted:This guy's pretty good with photoshop. I like a lot of the other stuff in his collection. 2749 pounds, 725+ of that is the engine. Conserving that polar inertia.
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Dec 10, 2013 04:08
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Slavvy posted:I know all that, I was asking in the sense of how do they make the engines all make the same power. V8SC is practically a one-make race series, they all have a control chassis and so on so they must have some measure In place. I think there may be some ECU based restrictions or a hard rev limit. Actually yes, now I recall, there is a hard rev limit no motor is allowed to go over - IIRC 7500rpm. All the motors can make waaaaaay more without restriction than the 630-650 that they do now and all of them are designed to rev a lot harder so this I believe gives you a pretty natural equaliser - you are looking for a fat torque curve rather than have any real concern for peak hp. I think the quad cam motors are struggling to match the OHV engines because of that rev limit, it cuts off their natural advantage. It also makes the engines quite reliable as they just simply arent working to the levels they can do.
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Dec 10, 2013 04:14
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Slavvy posted:I know all that, I was asking in the sense of how do they make the engines all make the same power. V8SC is practically a one-make race series, they all have a control chassis and so on so they must have some measure In place. ^^What CT said. Compression ratio's are capped at 10:1 as well as rev limited to 7500 rpm to match the pushrod engines. All teams also run Motec ECU's with a common code which allow the officals to "snoop" on what the teams are doing. Erebus had issues in the beginning of the year with their drive by wire system and had to roll back to the more conventional 8 butterfly setup to get a more linear delivery of power. Fuller9x fucked around with this message at 04:28 on Dec 10, 2013 |
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Dec 10, 2013 04:25
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Aren't V8's typically 90 degrees because they balance naturally at that angle?
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Dec 10, 2013 04:56
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There are two "angles" with V engines. The bank angle and the degrees of rotation between firing events. Usually a 90-degree V8 means that it fires every 90 degrees of crank rotation. That's most US-style V8s. Ferraris,other exotics, and a lot of racing V8s are 180-degree engines. The two sound completely different, both good, in my opinion. Bank angle is a design choice - I'm not sure of what the trade-offs are beyond packaging, but there likely is some advantage to the 90-degree bank angle, given how many engines use it. Or how many I seem to recall use it, anyway.
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Dec 10, 2013 05:04
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Yes they are typically 90 degrees. The Volvo V8 is 60 degrees because, though significantly changed, it's based on a Ford V6.Darchangel posted:Bank angle is a design choice - I'm not sure of what the trade-offs are beyond packaging, but there likely is some advantage to the 90-degree bank angle, given how many engines use it. Or how many I seem to recall use it, anyway. Angle almost always refers to bank angle when people talk about engines in this kind of context. The other angle you mentioned is usually referred to as either a cross plane crank (90 degrees) or a flat plane crank (180). Different engine configurations have different angles they "like" better. V8s like 90, V6s and V12 like 60 (though Ferrari V12s are 65) and I think V10s are most naturally balanced at 72 degrees. edit: I'd bet you see 90 a lot because, especially in America, they base a lot of stuff off of V8s. GMs 3.8 and 4.3 V6s, the Dodge and Ford V10s among others are all 90 degrees because they're just V8s that either lost or gained a pair of cylinders. Q_res fucked around with this message at 05:19 on Dec 10, 2013 |
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Dec 10, 2013 05:05
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Darchangel posted:Usually a 90-degree V8 means that it fires every 90 degrees of crank rotation. That's most US-style V8s. Ferraris,other exotics, and a lot of racing V8s are 180-degree engines. The two sound completely different, both good, in my opinion. You're describing cross plane:  versus flat plane: 
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Dec 10, 2013 05:17
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Weren't the original V6es 90degree engines but they had a loping idle because an uneven number of cylinders were firing in each ignition cycle so they switched to 60?
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Dec 10, 2013 05:37
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