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OK, DW12 era Indy Car flow rate math. The first combination (2x EFR6758 or 1x EFR9180) at the road course boost level, the turbo peak flow was in the 95-100lb/min range, with efficiency of either option dropping off past 60lb/min (modern turbos aren't optimized for low boost). The current sole choice (2x EFR7163) peaks at 120lb/min, with efficiency still dropping off past 65ish lb/min of air. Power figures I've seen are in the 675hp range on road course boost plus 60hp or so with push to pass - that works out to about 80lb/min (1000ish cfm before compression) or about 90lb/min (1100ish cfm) with push to pass. If you do the math, that works out to about 450hp NA out of a 2.2L V6 which, in TYOOL 2017, seems about right for a conservative race engine that's supposed to have a pretty long life span.
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Oct 17, 2017 14:14
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Love the reaction from the guy behind, "yeah, that'll buff out"
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Oct 17, 2017 14:32
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mekilljoydammit posted:OK, DW12 era Indy Car flow rate math. The first combination (2x EFR6758 or 1x EFR9180) at the road course boost level, the turbo peak flow was in the 95-100lb/min range, with efficiency of either option dropping off past 60lb/min (modern turbos aren't optimized for low boost). The current sole choice (2x EFR7163) peaks at 120lb/min, with efficiency still dropping off past 65ish lb/min of air. Power figures I've seen are in the 675hp range on road course boost plus 60hp or so with push to pass - that works out to about 80lb/min (1000ish cfm before compression) or about 90lb/min (1100ish cfm) with push to pass. If I remember right, and I know King Shibby over in SAS can probably confirm (or IoC can either or), they're supposed to last 2500 miles before being allowed to be replaced, barring catastrophic engine failure (like the gearbox deciding to go from 4th to 1st at speed). I'm only just getting into the technical side of racing. I'm that person who was "FAST CARS WOOO" and now getting into what exactly makes them fast. It's fun.
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Oct 17, 2017 14:35
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Wistful of Dollars posted:All it's missing is the Brazzer's logo. What even is that thing? It looks like it came straight down rather than falling over. Crossbar for the traffic lights?
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Oct 17, 2017 15:33
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iospace posted:If I remember right, and I know King Shibby over in SAS can probably confirm (or IoC can either or), they're supposed to last 2500 miles before being allowed to be replaced, barring catastrophic engine failure (like the gearbox deciding to go from 4th to 1st at speed). Yeah, I'm seeing 2500 miles. Kind of a standard thing - Indycar is a lot more concerned about the show than absolute technical prowess so the teams don't want to have to shell out too often. I'm... uh... 15-20 years into getting into the technical side of racing.  A lot of the technical stuff from the older era cars is actually more interesting, since it's sorta gotten to the point where most of the significant stuff has been invented and either banned or become standard.
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Oct 17, 2017 15:43
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mekilljoydammit posted:Yeah, I'm seeing 2500 miles. Kind of a standard thing - Indycar is a lot more concerned about the show than absolute technical prowess so the teams don't want to have to shell out too often. Yeah, there's a reason for the want to keep costs cheap: ballooning costs was one of the reasons the split happened. (that, and tobacco money is long gone and NASCAR is sucking up the "big" sponsors)
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Oct 17, 2017 15:50
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Actual video, at normal speed: https://www.youtube.com/watch?v=dVwoELIuAvc
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Oct 17, 2017 15:53
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iospace posted:Yeah, there's a reason for the want to keep costs cheap: ballooning costs was one of the reasons the split happened. I've seen a lot of different takes on the IRL / CART split - almost all of them focus on personality issues rather than actual costs. CART itself was team owned and the teams had an interest in keeping costs relatively in check. But yeah, the tobacco money coming out hurt lots of things. Incidentally, aren't you a Wisconsinite too? The vintage races at Elkhart during the summer are cool and good.
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Oct 17, 2017 15:58
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It was both - egos and differing opinions on costs. The tobacco money hadn't left yet but there were a lot of people who felt that CART was getting too spendy, too "furriner". I still maintain that the Ilmor 265E / Mercedes 500i / The Beast was the 1000hp straw that broke the camel's back. It was so much better than any other engine at Indianapolis that it would have been a pay to win if it had been legal for 1995. Consider that without even accounting for inflation, the proposed engine lease for the 500i for the only race it could compete in, cost more than a full season engine deal today. And if you didn't have the full season contract for the regular Ilmor engine, you couldn't get your hands on it at all. Tony George thought he could run it cheaper and cut out the owners, the owners thought they could somehow survive without Indianapolis. Both sides were loving idiots.
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Oct 17, 2017 16:08
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mekilljoydammit posted:I've seen a lot of different takes on the IRL / CART split - almost all of them focus on personality issues rather than actual costs. CART itself was team owned and the teams had an interest in keeping costs relatively in check. Yes I am, and was at the Indy race at RA this year. Either way, the new Indy cars are awesome car poo poo: https://twitter.com/qill13/status/895666087370600448
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Oct 17, 2017 16:12
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 https://grassrootsmotorsports.com/f...33/#post2386261
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Oct 17, 2017 18:02
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Holy crap that thing is amazing. Every time I scroll past this little guy, I give it a click and try to figure out how to add it to my stable. https://asheville.craigslist.org/cto/d/1977-amc-hornet-amx-obo/6341623753.html 
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Oct 17, 2017 18:06
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Never don't post AMCs.
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Oct 17, 2017 18:09
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I saw my old Miata today. It... it's changed a bit  
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Oct 17, 2017 19:03
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Beach Bum posted:I saw my old Miata today. It... it's changed a bit Little blue dune buggy! https://www.youtube.com/watch?v=Mq5OyumR_1o
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Oct 17, 2017 19:07
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So. loving. Would.
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Oct 17, 2017 19:31
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Garage2Roadtrip posted:Little blue dune buggy! Which has a better power/weight ratio, that or a Manx buggy?
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Oct 17, 2017 19:59
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Because it's so old I bet there's common upgrades people can do to make Beetle 1600s like 70HP and a Manx seems to average about 1400 pounds while the Miata probably weighs 2000 stripped and with a rollbar/fat tires like that, the engine is way more modern so doesn't have super easy and cheap upgrade parts so the stock ~130HP figure seems good to go with. Manx: ~20 pounds per HP Baja Miata: ~15.4 pounds per HP. With effort and money you can get a Beetle engine to the 100+HP range, but you also could do it to a Miata engine to get to the 200+ HP range.
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Oct 17, 2017 20:39
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http://www.speedhunters.com/2017/10/real-life-shooting-ford-gt-austria/ timetofap.jpg
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Oct 17, 2017 22:30
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what the gently caress am i doing with my life
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Oct 17, 2017 22:33
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BlackMK4 posted:what the gently caress am i doing with my life Not driving a Ford GT, obviously. To be fair, neither am I 
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Oct 17, 2017 22:35
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Wistful of Dollars posted:All it's missing is the Brazzer's logo. I always wondered when the poles would get back at the Germans.
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Oct 17, 2017 22:39
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STOP! I CAN ONLY GET SO ERECT!
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Oct 17, 2017 22:45
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tetrapyloctomy posted:I always wondered when the poles would get back at the Germans.  Edit: To add more Pole-related content, the Polestar 1 officially launched its website: https://www.polestar.com/polestar-1 Still pretty light on details, though. Guinness fucked around with this message at 03:05 on Oct 18, 2017 |
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Oct 18, 2017 02:47
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Guinness posted:
Holy gently caress, i love it.
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Oct 18, 2017 03:34
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Dagen H posted:Never don't post AMCs. Ok! My favorite, the AMC AMX GT concept.  Pretty much my idea of perfection.
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Oct 18, 2017 13:55
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El Laucha posted:Love the reaction from the guy behind, "yeah, that'll buff out" lol also not sure if i posted this yet or not but the shop near me is working on a cool frankenstein project:     phone posting so sorry if resolutions are weird iirc the engine was pulled from an S2000 (f22?)
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Oct 18, 2017 19:31
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Thief posted:lol I have to admit I never considered an S2000 swap into a 240Z before. Now I will have trouble not thinking about it constantly.
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Oct 18, 2017 19:37
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Is that a turbo tucked down there? It's an F22 going on the cluster and valve cover, but some people convert the F20 to use the F22 electronic poo poo (which involves swapping the valve cover) so they can use KPro.
BlackMK4 fucked around with this message at 19:40 on Oct 18, 2017 |
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Oct 18, 2017 19:38
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Nah,, looks like a catalytic converter. You can kinda see the heat shielding around it.
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Oct 18, 2017 19:50
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That header design is hosed then
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Oct 18, 2017 20:05
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Wasabi the J posted:Ok! Early Javelin/AMX front, Gremlin-ish kammback, and bigass side-pipes? gently caress yeah.
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Oct 18, 2017 20:30
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BlackMK4 posted:That header design is hosed then That's because they're dumping the exhaust just behind the right front wheel.
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Oct 18, 2017 20:38
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No matter where they dump it, the 180 degree bend right after the collector isn't a good choice. I'd have turned it the other way and just cut out the firewall and made a box. Dump it out the passenger door. Or just go straight out in front of the tire from where it is.
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Oct 18, 2017 20:44
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yeah, pretty sure the intention behind this build is just to experiment with "what if" stuff they've never tried doing or seen others in the area do before. they deal with a lot of common engine swaps like SR20s into 240sx's and LS/bmw v8s into whatever the customer wants and i think the owner is just doing this to amuse himself rather than push for direct performance seen some serious rx7s, 350zs and even Corvettes in their back lot so i doubt they care too much about taking this thing to the track regularly but i'll ask next time i'm around
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Oct 18, 2017 21:05
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The F motor is really picky about the header design, most aftermarket ones lose power over stock. The ones that do make actual power are 4-2-1 and have pretty long unequal length (between pairs) primaries and secondaries. Just a high flow cat allows VTEC to be dropped to the 4.5k area and makes pretty substantial midrange gains. (Basically you do two dyno runs - one with vtec on and one with it off, where they intersect is where you place the vtec engagement) BlackMK4 fucked around with this message at 21:19 on Oct 18, 2017 |
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Oct 18, 2017 21:16
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Brace yourselves.    I know know exactly what i want in a car. Riveted aluminum body Articulating 8x8
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Oct 18, 2017 22:16
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Powershift posted:Brace yourselves. You know, if you reinforced the poo poo out of that rear access door, you could get a fifth wheel hitch on that thing...
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Oct 18, 2017 22:32
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Powershift posted:Brace yourselves. This looks like something out of Fallout and I want it to be nuclear powered.
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Oct 18, 2017 22:48
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Apparently you can buy this F1 engine for $12k.
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Oct 18, 2017 22:53
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