Sanctioned RacingWhat type of sanctioned racing events do you watch/compete in? Im not talking about street racing. Im talking about legal track based events. One type that I compete in regularly is SCCA Solo. It is extremley entertaining.
I love the concept behind the Rotary engine, but they are brand new compared to a piston engine, and have not been refined over the decades. However, they do accomplish one thing a Piston engine cannot. In its current state, Rotarys are a bit of a gas hog, but they do provide a wide RPM range and a very flat torque curve. With more development, I think Rotarys could become more efficient then piston engines, mainly because they do not fight the law of inertia like a piston engine does.
no engine can compete with a boxer. for example, the subaru 2.5 litre 4 cyl. makes 165 hp, and as much torque, the same amount as the 3.4 litre V6 in my dad's grand am.
and porsches 6 cyl. boxers make over 300 horses. short stroke, big bore power baby.
I would be kinda worried about reliability on a twin charged Mini. But then again, you said theyu could handle 25 psi... thats pretty impressive.
I also like how the boxer cylinder heads come from the factory with O- rings head gaskets. However, I don't either of those engines would be capable of those numbers without a power-adder. I like the torgue curve of N/A vehicles, preferably an I-6 or V-8.
However, it is hard for me to argue against VW and Audis 1.8t. It produces its peak torque at 1750 rpm and holds it there fairly far up in to the revs. I think this makes a good, practical, daily driver powerplant.
Yea but I think the Germans were making production boxer engines long before Subie entered the scene. Not much beats the sound of an old air cooled Flat six!
3.0 L 6-cylinder Subaru boxer engine - 250 HP @ 6600 RPM but only 219 TQ @ 4200 RPM. that's not much power under the curve, and it peaks out WAAAAAAAAAAAAY too high.
so what was about about flat-engines having sweet torque curves? :) j/k
the key to making torque in flat engines found in porsches and subarus is the valvtrain assembly, ie: things like variable valve timing and camshaft phasing, not so much the design of the block and the rotating assembly. however, boxer engines DO have the added benefit of more centralized mass and compact design when compared to traditional inline engines or V-type engines.
i couldn't find anything for a stock 3.0 L subby engine, however, i did find a shitload of graphs for their flat-fours at scoobynet. i can only extrapolate from these graphs, so i know my assumptions may not hold water for the 6-cylinder engines, but the flat-fours seem to make very little torque until ~3000 RPM where they begin to ramp up. unfortunately, i don't know if this attribute is due to the spooling turbo(s) or not. i suck
no. only teh rx-7's and rx-8's have rotarys.
and certain race cars.
lol
heh. shows how much i know about mazdas :P
I still dont like them.
I love the concept behind the Rotary engine, but they are brand new compared to a piston engine, and have not been refined over the decades. However, they do accomplish one thing a Piston engine cannot. In its current state, Rotarys are a bit of a gas hog, but they do provide a wide RPM range and a very flat torque curve. With more development, I think Rotarys could become more efficient then piston engines, mainly because they do not fight the law of inertia like a piston engine does.
True, but they have very little low end power. I wouldnt want one. I will take my Twincharged i4 anyday. Thank you very much :P
no engine can compete with a boxer.
for example, the subaru 2.5 litre 4 cyl. makes 165 hp, and as much torque, the same amount as the 3.4 litre V6 in my dad's grand am.
and porsches 6 cyl. boxers make over 300 horses. short stroke, big bore power baby.
2.5 only putting out 165? ;P You need some forced induction :P
yeah thats N/A. turbo = 300. big turbo+closed deck = 600+hp.
I would be kinda worried about reliability on a twin charged Mini. But then again, you said theyu could handle 25 psi... thats pretty impressive.
I also like how the boxer cylinder heads come from the factory with O- rings head gaskets. However, I don't either of those engines would be capable of those numbers without a power-adder. I like the torgue curve of N/A vehicles, preferably an I-6 or V-8.
However, it is hard for me to argue against VW and Audis 1.8t. It produces its peak torque at 1750 rpm and holds it there fairly far up in to the revs. I think this makes a good, practical, daily driver powerplant.
Well, the twinchargd one im getting will only be running in the 13-15 psi range, which is perfectly safe.
i'd like to see a 3 litre V8 make 300 horsepower. boxers have sweet torque curves.
Very true. They work together instead of punching down. The germans nailed it w/ the boxer.
German enginieering is quite amazing.
they're not the only ones.
Yea but I think the Germans were making production boxer engines long before Subie entered the scene.
Not much beats the sound of an old air cooled Flat six!
3.0 L 6-cylinder Subaru boxer engine - 250 HP @ 6600 RPM but only 219 TQ @ 4200 RPM. that's not much power under the curve, and it peaks out WAAAAAAAAAAAAY too high.
so what was about about flat-engines having sweet torque curves? :) j/k
the key to making torque in flat engines found in porsches and subarus is the valvtrain assembly, ie: things like variable valve timing and camshaft phasing, not so much the design of the block and the rotating assembly. however, boxer engines DO have the added benefit of more centralized mass and compact design when compared to traditional inline engines or V-type engines.
have you seen a dyno graph? it peaks at 4200 rpm but i'm pretty sure its near 200ft/lbs at ~2000/2500 rpm. unless i'm wrong. then i'm wrong. ahah.
Porsche is making the powerful boxers NA. for example, the 911 GT3: 3.6 liters, 6 cylinders
Torque 285 lb-ft @ 5,000 rpm
380 hp (SAE) @ 7,400 rpm
i couldn't find anything for a stock 3.0 L subby engine, however, i did find a shitload of graphs for their flat-fours at scoobynet. i can only extrapolate from these graphs, so i know my assumptions may not hold water for the 6-cylinder engines, but the flat-fours seem to make very little torque until ~3000 RPM where they begin to ramp up. unfortunately, i don't know if this attribute is due to the spooling turbo(s) or not. i suck
yeah it depends.
bah i love 'em anyway.
It most likeley is due to the turbo spooling up...
Thats the nice thing about your twin charged Mini, the super will provide power down low, while the turbo will kick in up top.
I know. Thats why i love it so much :)