Norm Peterson
corner barstool sitter
Why not?True, but you can't go multi-valve on these engines
Not being hamstrung by 100 mm bore spacing makes it easier to go to 4-valve heads.
Norm
Why not?True, but you can't go multi-valve on these engines
next itll be said that it cant have Continuous VVTWhy not?
Norm
Dodge Viper.next itll be said that it cant have Continuous VVT
yeah, it was a joke. As the LT1 has CVVT.Dodge Viper.
DuoCam | MECHADYNE (mechadyne-int.com)
The Viper phaser assembly still bolts to the front of the cam and also serves as the upper timing chain sprocket. But unlike other applications, it rotates the cam within a cam.
Norm
DI is only bad at low load, generally. The dual injection is the best of both worlds. Generally the port injection system does most of the work at idle and low load to prevent soot from forming. Small turbo engines struggle with that because of having to have the fuel system to match boost but also being able to run without it in normal circumstances. Creates a lot of overlap situations where you aren't getting close to a complete burn.
Yep dual injection (port + direct) like the Mustang Coyote has is a lot better than the direct injection only system on the Camaro and other GM vehicles. That is, if you HAVE to have DI in the first place.Yeah the fact the Coyote had PI in addition to DI is why I felt more comfortable with it in regards to fuel washing over the valves to help keep it clean.
Since Dodge probably has a patent on the cam in cam design I assume you are right. I hope Dodge uses it though. If GM or Dodge would implement this their V8 performance engines would be so much better! They would get more performance and might be able to get rid of cylinder deactivation and skip shift features that are absolutely terrible. The TiVCT is a huge reason why the Predator, Coyote and Voodoo are superior to the V8 engines offered in the Camaro and another reason why I own a Mustang.And we'll not see anything like it again.
Kind of like how the ACA passed Congress yet I'd bet most of them didn't even read it completely if at all. And we wonder why we get such stupid laws passed in D.C.They don't even have a chance if they wanted to. 2-3 hours to read a 5000+ page document of layered bullshit legalese is not democracy.
Good post. One nit I will pick is to say that the only reason modern production OHV engines are NOT free revving is that they have to meet fuel economy and emissions standards.Very interesting and entertaining thread thus far. I've read pretty much all of it. My reason's for choosing a Mustang over a Camaro:
Engine - I simply prefer DOHC engines to OHV ones. I love the free revving nature of it and the Gen 3 sound at 7000+ RPM is intoxicating. As mentioned by others I like how the Coyote has both DI and PI so carbon buildup shouldn't be an issue. I also HATE cylinder deactivation that GM uses. It almost always causes reliability issues and produces uneven cylinder wear long term (Audi alternates cylinders to prevent this, not sure if GM does as well).
Exterior looks - This is completely subjective, but I much prefer the look of the S550 to the 6th gen Camaro. It's the most beautiful Mustang ever in my opinion. I wish Chevy took a bigger design leap going from 5th gen to 6th gen. I've heard that the 6th gen design was supposed to be based on the Buick Avista concept but was canned in favor of keeping it similar to the 5th gen in hopes of preserving sales numbers. I think that was missed opportunity since the Avista is gorgeous and probably would have improved the visibility of the 6th gen.
Interior - Again subjective, but the Mustang interior is just so much better from a design and ergonomics standpoint. I'm actually surprised so many people prefer the Camaro's interior. I guess for some it may feel more exotic/special because of the bunker feeling? But as far as quality, my 401A package car felt noticeably better than the 2SS I test drove.
I genuinely hope the Camaro lives on to see a 7th gen and beyond (and a new generation Challenger/Charger for that matter). Competition is good for all of us.
Good thing we live in a republic!They don't even have a chance if they wanted to. 2-3 hours to read a 5000+ page document of layered bullshit legalese is not democracy.
How many times have you commented saying its ugly now? LolBecause Camaros are F'n ugly. BTW, it seems in 2020 the slo-Maro sold half of what Dodge and Ford did...
Yes, but also no. A NASCAR engine's lifespan is measured in events, or hours. Lol. The problem with revving the nuts off an OHV engine is that the reciprocating mass of the pushrods and lifters is substantial and produces extreme wear on the entire valvetrain. That's why OEM's won't do it, it just won't last. In a DOHC engine, the camshaft is directly acting on the valve spring. In an OHV engine, the camshaft is exerting mechanical leverage from afar through a lifter and a pushrod/rocker arm. Accelerating all those extra parts takes more time, and more force. High angular acceleration = bad for longevity. Unless I'm missing a particularly clever design that is high revving but also reliable, in which case feel free to make me look silly.Good post. One nit I will pick is to say that the only reason modern production OHV engines are NOT free revving is that they have to meet fuel economy and emissions standards.
OHV engines can rev out to 8,000 - 9,000 RPMs if they are designed and built to do so. An example would be NASCAR OHV V8s. Without TiVCT they will most likely have crappy emissions and very poor low RPM behavior though.
Edit: I agree DOHC engines are great.
It is ugly, but it's also cool looking. I feel like that is a reasonable compromise. There's not one traditionally beautiful element in its design, it's all angry angles. But because of that, it looks kinda like an alien spaceship and is therefore cool.How many times have you commented saying its ugly now? Lol
I'm amazed that it stayed as unrefined as it was for as long as it did. My kind of car, and that's something we're for sure not going to see againI mean the Viper in general. A v10 sports car from an American manufacturer that is actually somewhat affordable. I'm amazed it lasted as long as it did.