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Fucknag posted:With a modern turbo you'd probably have even the same or better For sure, especially something fancy like a twin scroll Borg Warner efr. They even come with an integrated bypass valve and bcs.
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Apr 21, 2015 06:50
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Memento posted:This post in the Awesome AI poo poo thread reminded me of FD RX-7s, working on them, and vacuum tubes. You want to see some loving terrible car stuff? Behold. Click for big. Why did they think they needed like 6 different turbo control components 
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Apr 21, 2015 08:36
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"Computers are unreliable! They're not a ~mature technology~~ yet so do it the old-fashioned way! (also it's cheaper)" ^^ replace computers with any number of other things and it explains 90's japanese vehicle design strategy. Yes, there were semi-exotic sportycars but sales were absolutely dominated by extremely well-made, robust cars built on proven technology. Mostly that worked great, occasionally it held them back because of missed opportunities.
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Apr 21, 2015 09:02
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Slavvy posted:"Computers are unreliable! They're not a ~mature technology~~ yet so do it the old-fashioned way! (also it's cheaper)" That must be why they abandoned turbos. Ford built the new 2JZ/RB26 in the 3.5/2.7 ecoboost(albiet v6 config) and nissan and toyota are still using naturally aspirated v6s in everything. Could you imagine if you told your late 90s ricer self that in 2015 there would be a $25k 6 speed RWD turbo i4 car with independent rear suspension. You'd be in love. Then tell your late 90s ricer self that it's a mustang and he would beat the poo poo out of you. Powershift fucked around with this message at 10:41 on Apr 21, 2015 |
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Apr 21, 2015 10:37
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surebet posted:80% sure this goes here http://koin.com/2015/04/20/did-you-see-that-bmx-rides-over-lamborghini/
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Apr 21, 2015 11:13
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Apr 21, 2015 13:21
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The only thing that would've made this better would be to see her doing this while smoking.
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Apr 21, 2015 15:37
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KozmoNaut posted:Dear automakers I love how within the first few comments someone was blaming unions and democrats for this. That's... that's just adorable.
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Apr 21, 2015 16:40
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surebet posted:80% sure this goes here Meatpimp was here.
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Apr 21, 2015 16:44
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In related stories on that site. Man has car towed that is blocking his driveway a 2nd time after leaving a note. Gets poo poo kicked out him. http://koin.com/2013/08/30/police-last-thursday-attendees-assault-homeowner/
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Apr 21, 2015 18:29
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veedubfreak posted:In related stories on that site. quote:Tarman picked up and turned on a cordless drill and hit Forest-Cooper with it, injuring his arm. Asa then joined in the assault. 
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Apr 21, 2015 18:41
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Powershift posted:That must be why they abandoned turbos. Ford built the new 2JZ/RB26 in the 3.5/2.7 ecoboost(albiet v6 config) and nissan and toyota are still using naturally aspirated v6s in everything. They abandoned turbos because the japanese brands (toyota aside) experienced a miniature financial downturn just before the main recession hit and the complicated performance cars were the first thing to get axed. Toyota abandoned literally everything cool because they decided that making soviet-style appliances in gigantic quantities was the most efficient way to cement themselves as world no.1, a target they pursued at the expense of basically everything else, including quality and reliability. But it looks like they're trying to un-GM themselves now before it's too late.
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Apr 21, 2015 20:01
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KozmoNaut posted:Dear automakers Seconded. Memento posted:That was always the first step to anyone who wanted to go fast with any reliability in those. There was a recall on them that required the replacement of every single line, and the factory would give you ten hours to do it under warranty. I had them down to about 18 hours after doing ten or twelve of them, but as usual the factory service times were a magical fantasy land populated by FTFY
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Apr 21, 2015 21:03
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KozmoNaut posted:Dear automakers Yeah, while I don't hold hope that it will do much good, this is the kind of thing that everyone needs to be jumping all over their politicians about. EFF has some sites set up to make this easy. atomicthumbs posted:Why did they think they needed like 6 different turbo control components Mazda had the compound-turbo MZR diesel engine out of their Skyactiv prototype racers on a stand at Long Beach this weekend. It was amazing how simple that setup is.
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Apr 21, 2015 21:27
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Powershift posted:Could you imagine if you told your late 90s ricer self that in 2015 there would be a $25k 6 speed RWD turbo i4 car with independent rear suspension. You'd be in love. Then tell your late 90s ricer self that it's a mustang and he would beat the poo poo out of you. Don't forget this car would boost to 20 psi stock and have over 300 HP and torques. A buddy of mine just leased one of these. I asked him what it boosts to and he was like "it says 20. is that good?" He turned his head to find me flipping him off right in his face. Here at altitude the 4 banger has more torque than the GT. LloydDobler fucked around with this message at 23:59 on Apr 21, 2015 |
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Apr 21, 2015 23:55
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Powershift posted:
Depends in your market I guess. Here in the late 90s that car already existed - the S15 Silvia. There isn't anything comparable today - the Mustang is a niche product, way more expensive and not available in manual
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Apr 22, 2015 00:16
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dissss posted:the Mustang is [...] not available in manual Wh...???? E: dissss posted:the Mustang is a niche product, way more expensive I don't know what the S15 sold for originally (my google-fu is weak for non-Japanese market ones, apparently), but keep in mind that there's been almost 50% inflation since 2000. An ecoboost 6-speed Mustang is, what, $26k? Divide by 1.5, that would be $17k in 2000 dollars. Was the S15 that much cheaper than that? Raluek fucked around with this message at 00:39 on Apr 22, 2015 |
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Apr 22, 2015 00:25
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Raluek posted:Wh...???? He's dumb, but I think he probably lives in Aus or NZ, based on his comments. As a guy who was a major ricer in the 90's, the concept of a 300+HP, 25k turbo mustang the likes of the Gen6 would have caused me to explode into a billion little pieces had I heard about it in 1998.
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Apr 22, 2015 01:13
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Like I said the Mustang is a niche product here - the only manual option is the V8 and that lists at $72,000 NZD (the base ecoboost auto is $57k Your point about inflation is valid and does bring the prices closer - the S15 was ~$35k in 1999 which is something like $50k now (or would be if car prices here worked like that) Of course the Mustang is a very different type of car - much quicker, safer, more refined etc
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Apr 22, 2015 01:15
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LloydDobler posted:Don't forget this car would boost to 20 psi stock and have over 300 HP and torques. It makes me wonder if there's a market for kits to convert old engine designs to GDI. Custom cylinder heads and/or spark plug/injector combos, fuel systems, computers to control the whole shebang, high-compression reciprocating bits...
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Apr 22, 2015 01:17
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Ask Mitsubishi and Toyota how well that worked out...
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Apr 22, 2015 01:19
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atomicthumbs posted:Gasoline direct injection is literally magic. At a bare minimum it would have to be for cars that people are willing to spend a huge amount of money on and keep for far longer than most others would. It would be sort of like those HKS designed cylinder heads that add variable valve timing to the RB26. They're more popular than HKS ever anticipated because of how many people have been holding on to the Skyline GT-Rs, and also ridiculously expensive If I remember right.
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Apr 22, 2015 01:26
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razorscooter posted:At a bare minimum it would have to be for cars that people are willing to spend a huge amount of money on and keep for far longer than most others would. It would be sort of like those HKS designed cylinder heads that add variable valve timing to the RB26. They're more popular than HKS ever anticipated because of how many people have been holding on to the Skyline GT-Rs, and also ridiculously expensive If I remember right. Wait, what? How does something like this even work?
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Apr 22, 2015 01:33
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KKKLIP ART posted:Wait, what? How does something like this even work? The RB25 had VVT so I don't imagine it'd be a major stretch to whack something together.
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Apr 22, 2015 01:34
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atomicthumbs posted:Gasoline direct injection is literally magic. This reminds me, I've been idly wondering if anyone's made aftermarket heads that stuck an overhead cam or two on a small block chevy. I love the compactness and lightness of OHV as much as anyone, but if OHC/DOHC is really that much better from a performance standpoint, surely you could use custom heads and front cover to make your one-of-one race motor?
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Apr 22, 2015 01:47
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Raluek posted:This reminds me, I've been idly wondering if anyone's made aftermarket heads that stuck an overhead cam or two on a small block chevy. I love the compactness and lightness of OHV as much as anyone, but if OHC/DOHC is really that much better from a performance standpoint, surely you could use custom heads and front cover to make your one-of-one race motor? Mercury marine showed off a DOHC LS based engine at sema back in november. Don't think they sell it yet though.
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Apr 22, 2015 02:01
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Slavvy posted:The RB25 had VVT so I don't imagine it'd be a major stretch to whack something together. There is also what OS Giken does to the L series from the Datsun Z. 
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Apr 22, 2015 02:30
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BlackMK4 posted:There is also what OS Giken does to the L series from the Datsun Z. That is the hottest poo poo 
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Apr 22, 2015 02:49
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KKKLIP ART posted:Wait, what? How does something like this even work? https://www.youtube.com/watch?v=tnfdn1M3iis Video from 2005 when HKS first released it, skip to 14:00 to see a cutaway version of the V-Cam head  Most of the magic is in the intake cam sprocket, like most factory setups, the only real odd thing about it is an aftermarket company building their own variable valve timing solution for a twenty six year old platform razorscooter fucked around with this message at 03:22 on Apr 22, 2015 |
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Apr 22, 2015 03:19
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Raluek posted:This reminds me, I've been idly wondering if anyone's made aftermarket heads that stuck an overhead cam or two on a small block chevy. I love the compactness and lightness of OHV as much as anyone, but if OHC/DOHC is really that much better from a performance standpoint, surely you could use custom heads and front cover to make your one-of-one race motor? Not the same thing, but there's a company that sells aluminum 4 valve OHV heads for the 5.7L LT1 motors.
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Apr 22, 2015 03:28
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Raluek posted:This reminds me, I've been idly wondering if anyone's made aftermarket heads that stuck an overhead cam or two on a small block chevy. I love the compactness and lightness of OHV as much as anyone, but if OHC/DOHC is really that much better from a performance standpoint, surely you could use custom heads and front cover to make your one-of-one race motor? Or go one step further and make a cam less engine...
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Apr 22, 2015 03:32
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Why don't they do a camless engine with solenoids? Surely that's easier than air?
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Apr 22, 2015 03:40
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bobbilljim posted:Why don't they do a camless engine with solenoids? Surely that's easier than air? Probably because valves need to ramp open on a determined curve, not just slam open and shut. Can't really have a halfway open position with a solenoid. Maybe it also has to do with the sheer size of coil you'd need? Plus, they'd all interfere with each other.
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Apr 22, 2015 03:46
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Raluek posted:Probably because valves need to ramp open on a determined curve, not just slam open and shut. Can't really have a halfway open position with a solenoid. Maybe it also has to do with the sheer size of coil you'd need? Plus, they'd all interfere with each other. They have multi-position solenoids, they use em in newer transmissions (variable-force solenoids theyre called), but yeah they're not infinitely variable so valves are still better.
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Apr 22, 2015 03:59
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I think Koenigsegg has something similar to what you're talking about.
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Apr 22, 2015 04:12
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Also the ideal valve opening/closing profile is 'instant' (i.e. a square wave or PWM shape, not the semi-sinusoidal way a normal cam works). The reason cams open the valve using a curved shape to ramp the lifter open gradually is because if you just used a sharply terminating profile to slam the valve fully open instantly, the cam followers and cams would quickly end up as a bunch of powder in the sump of your now seized engine from them slamming into each other so harshly. Gradual opening and closing of valves are to benefit the cams and lifters, not the rest of the engine. No cams, no need for gradual opening of the valves. F1 engines have played with pneumatic valves since the 80s (since 20,000 rpms requires the instant opening and closing pneumatic valves provide as cammed valve trains suffer from excessive valve float at those speeds). They're currently used on all modern F1 cars to my knowledge, and they're quite well understood.
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Apr 22, 2015 05:18
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Actually IIRC F1 engines use pneumatic valve springs only, they're sill actuated by a camshaft AFAIK.
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Apr 22, 2015 05:35
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BlackMK4 posted:I think Koenigsegg has something similar to what you're talking about. I think I literally just posted that.
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Apr 22, 2015 05:59
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Raluek posted:Wh...???? 2001 Silvia here when released in Aus was about $35-40k depending on trim when released, maybe even more. The one we got second hand a year old was bought for $30k and that was the base model manual.
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Apr 22, 2015 08:00
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Fucknag posted:Actually IIRC F1 engines use pneumatic valve springs only, they're sill actuated by a camshaft AFAIK. Yup. Ditto MotoGP. Using finger followers takes a lot of the sting out of long duration/big lift cams running at high revs, too.
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Apr 22, 2015 08:03
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