CAinCA said:codrus (Forum Supporter) said:AnthonyGS (Forum Supporter) said:All flat engines fight centripetal forces in high g cornering. This is partly engine architecture and maybe silicon.
Porsche?
The 9A1 (997/987) engines have scavenge pumps in each head to prevent this issue. I've heard that the earlier GT models have huge dry sumps (12 qt) for the same reason.
Edit: I see that dps214 beat me to it.
Actually two scavenge pumps per head.
I think i liked it more when it was an assembly problem not a design flaw
Opti said:I think i liked it more when it was an assembly problem not a design flaw
Like I said, I think it's way overblown but I just like to follow things in the car world.
And these cars with sticky tires are an absolute blast to drive.
I know there was a post here that said that a turbo GR86 was just for dreamers, although I just read an article where apparently its "confirmed" that the 2025 mid-cycle GR86 refresh will use the GR Yaris/Corolla engine. Not sure about the BRZ though, but hey, thats cool.
In reply to RyanGreener (Forum Supporter) :
Just remember, a mid engined Corvette has been confirmed for production. Since the mid 60s.
In reply to GameboyRMH :
Good god this makes me shudder. I'd want to know why the vis dropped. M1 doesn't run low normally. I'm guessing fuel, but we'll never know with their data
ShinnyGroove (Forum Supporter) said:The comment roll on that video is interesting.
Toyota's involvement in oval racing is paying off.
*snort*
z31maniac said:Opti said:I think i liked it more when it was an assembly problem not a design flaw
Like I said, I think it's way overblown but I just like to follow things in the car world.
And these cars with sticky tires are an absolute blast to drive.
I know that I'm not an objective source on these things: I actively dislike the FA20 without a header and tune, I'm at the track multiple times a month to instruct, etc., But I have now been to two track days this year where we've lost FA24s with the same symptoms. I don't think we've lost any other two other engines from the same brand. I know, I know, anecdotes, but at some point it becomes anecdata.
Both FA24s were between 10-20k in mileage and to my knowledge had only been to two or three track days.
Also, think about the video... Do you really think an oil pump would actually be pumping oil at only 20 psi in those corners? Where would the oil be coming from, and why would it only get 20 psi worth? My guess is that oil-covered pumps were pumping 20 psi of oily air.
RyanGreener (Forum Supporter) said:I know there was a post here that said that a turbo GR86 was just for dreamers, although I just read an article where apparently its "confirmed" that the 2025 mid-cycle GR86 refresh will use the GR Yaris/Corolla engine. Not sure about the BRZ though, but hey, thats cool.
Please share the link.
I'll bet a steak dinner it's from a site known for making up stuff for clicks.
I suspect that's why you didn't just share it to begin with.
With all the 2AR-FE development happening in the MR2 world, I wonder how much better the 86 could have been with a normal Toyota engine like that.
In reply to z31maniac :
The 86 gets the GR three cylinder for a one make race series in Japan, but I doubt they could get the engine low enough to pass pedestrian crash standards for road sales.
In reply to Pete. (l33t FS) :
Mazda does it somehow...
In reply to z31maniac :
I dont disagree with you, but saying they are fun on sticky tires, given recent developments, seems similar to saying heroin is fun...but it might kill you.
z31maniac said:RyanGreener (Forum Supporter) said:I know there was a post here that said that a turbo GR86 was just for dreamers, although I just read an article where apparently its "confirmed" that the 2025 mid-cycle GR86 refresh will use the GR Yaris/Corolla engine. Not sure about the BRZ though, but hey, thats cool.
Please share the link.
I'll bet a steak dinner it's from a site known for making up stuff for clicks.
I suspect that's why you didn't just share it to begin with.
Could be made for clicks. That's why I said "confirmed" but you never know with these things. I'm mostly just waiting and seeing because I think it would be pretty cool
Opti said:In reply to z31maniac :
I dont disagree with you, but saying they are fun on sticky tires, given recent developments, seems similar to saying heroin is fun...but it might kill you.
I would just say again, we are looking at a handful of failures vs 20k sold. I'm waiting for Terry Fair to do his testing, and then I may track my mine. Getting point-bys from people with way more HP is always satisfying.
maschinenbau said:In reply to Pete. (l33t FS) :
Mazda does it somehow...
The ND has an amazingly tall hoodline that Mazda masked with various contours, and from what I have been able to find the G16 engine is very tall, being a long stroke engine design built with room to breathe. I wouldn't doubt it if it were an inch or two taller in height than the Duratec/MZR 2 liter.
In reply to Pete. (l33t FS) :
The ND uses a Skyactiv G, not the MZR. One big difference is that the stroke is a lot longer on the Skyactiv. I haven't measured heights, but it's quite probably even taller than the old MZR.
In reply to Keith Tanner :
TIL. I thought Mazda kept the geometry and dimensions of the old 2l.
A fair assumption, given Mazda's historical tendency to retain dimensions and other things long after they are more of a liability than a backwards-compatibility benefit.
edit: Now I wonder if an MZR crank fits, to make a 1.8l engine.
Sure would have been nice if they'd kept the bellhousing pattern...but when you look at the engine, it's pretty clearly a heavily reworked design and not an evolution.
I don't know if the bore spacing is the same. There's a 1.5 variant in the rest of the world, just use that :)
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