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Big bang, theory thread.

 
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Old 02-22-2009, 05:05 PM
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Big bang, theory thread.

Alright, here's a totally awesome/completely stupid idea.

I know that the fast S2K runs with big bang, all cylinders firing at once, and I know there are like, 'Busa racing bikes that use big bang, since I'm pretty sure it was kawasaki's idea, AND I know there are rotary cars, like the RX7, that also fire on all cylinders at once.

What would it take to make it happen in the lude?

I was thinking, camshafts, crankshafts, some kind of distributor trickery, and a new ECU, but then I'd have that sick idle lope that the american muscle guys are all about, AND it'd *i think* make some serious power.

Thoughts?

I know I'd also need a balance shaft, and I'm pretty sure it wouldn't work, but play with me here.


If I somehow managed to figure out air/fuel and ignition timing, and machined a crankshaft AND a camshaft so everything fired at once, AND got all the other ECU problems figured out, and the possibility for detonation, again, A/F mixtures..


What do you guys think?
Are the gains worth the money, haha.
I don't think so, but I've never heard of anyone trying to do it, and people put corvette engines in the fourth gens, so come on now, it's got to be possible.
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Old 02-22-2009, 05:14 PM
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Re: Big bang, theory thread.

haaaaaaaaaaaaaaaaaaahahahaahahahahhahhaha
wtffff are you talking about dood????


please explain this thing that you call "big bang/firing on all cylinders at once".






Quote:
Originally Posted by Rugburn View Post
AND I know there are rotary cars, like the RX7, that also fire on all cylinders at once.


lmfaoooo
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But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
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Old 02-22-2009, 05:39 PM
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Re: Big bang, theory thread.

Yeh, I'm not sure I understand it either. And google was no help, just directing me to sites about the universe starting.
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Old 02-22-2009, 06:18 PM
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Re: Big bang, theory thread.

a rotary with cylinders. must be a rx9
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Old 02-22-2009, 06:18 PM
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Re: Big bang, theory thread.

^ search "big bang engine"

OP I think you've been misled, all cylinders dont fire at once. It would be weird though, like having one big ass cylinder




Here is a passage from an article I found.
"Whereas a screamer engine - so called due to its high-pitched engine note - features an equal amount of time between the firing of each cylinder, 'big-bang' engines have an uneven firing order.

So - in the case of a four-cylinder engine - two cylinders fire closely together (producing what sounds like one 'big bang'), then there is a longer than usual time period before the other two cylinders are fired (also closely together).

Internally the 'big-bang' engine is very smooth during its rotations. It sounds like it is fluctuating a lot, because of the uneven combustion timing, but the reality is that it is very smooth at high rpm"
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Old 02-22-2009, 07:39 PM
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Re: Big bang, theory thread.

you want the R1 engine technology in your car? drop that engine in.
you want the big-cam'd lopey idle of a big block? drop one of them in your car or buy one.

you want your cake AND eat it too? you better have a 6-figure budget for all the R&D your gonna need to design an entirely new engine.
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Quote:
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But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
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Old 02-22-2009, 07:49 PM
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Re: Big bang, theory thread.

It would be impossible to have all 4 cylinders fire all at once. You would need a crank for each cylinder. And im pretty sure no engine does that lol. Where did u get this info??? lol
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Old 02-22-2009, 11:48 PM
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Re: Big bang, theory thread.

lol that seems to hard, go individual throttle bodies instead and pretend that all your cylinders are firing
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Old 02-23-2009, 12:14 AM
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Re: Big bang, theory thread.

Quote:
Originally Posted by hojemwod View Post
^ search "big bang engine"

OP I think you've been misled, all cylinders dont fire at once. It would be weird though, like having one big ass cylinder

Here is a passage from an article I found.
"Whereas a screamer engine - so called due to its high-pitched engine note - features an equal amount of time between the firing of each cylinder, 'big-bang' engines have an uneven firing order.

So - in the case of a four-cylinder engine - two cylinders fire closely together (producing what sounds like one 'big bang'), then there is a longer than usual time period before the other two cylinders are fired (also closely together).

Internally the 'big-bang' engine is very smooth during its rotations. It sounds like it is fluctuating a lot, because of the uneven combustion timing, but the reality is that it is very smooth at high rpm"
You're helping, thanks.
I wasn't exactly looking for like, an immediate build schematic or anything, I was just kind of like, wondering.
We were talking about it.
Thanks, for reals.

Quote:
Originally Posted by twokexlv6coupe View Post
you want the R1 engine technology in your car? drop that engine in.
you want the big-cam'd lopey idle of a big block? drop one of them in your car or buy one.

you want your cake AND eat it too? you better have a 6-figure budget for all the R&D your gonna need to design an entirely new engine.
You were not helping.
Like I said, I'm trying to learn how it'd work, I'm not going to go out and do it.
I'm also not going to enter the R&D phase for a brand new engine setup, or drop a big block into my prelude.

Seriously, theory.
Only.


Also, my bad for the "RX7 cylinder" thing, haha, got a little giddy.


It seems like it's just an uneven ignition timing thing.
I'm just interested in how it'd work, and how it works now.
I know it happens a lot in aviation, plane engines and such, and I know there's an S2K that does it, and some RX7 that does it.
It seems like, if I were actually interested in doing it, it'd make some pretty substantial differences heh.
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Old 02-23-2009, 12:35 AM
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Re: Big bang, theory thread.

Rotary with pistons... Is that a 4 banger or a V8?
Is it a big block 350 with VTEC and direct exhaust injection for maximum efficiency?


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Old 02-23-2009, 02:36 AM
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Re: Big bang, theory thread.

MEH.
Not really helping.
Nevermind.
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A PENIS?????
^rofls.
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Old 02-23-2009, 11:50 AM
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Re: Big bang, theory thread.

its not impossible but why re-invent the whele when you have a great working motor as it is.
if you wnated to do it you would need a fully digital ignition system and engine management, like a mega squirt system about $400-700 bucks
someone would have to custom make a crank and cams for you, good luck.
if you could work out that everything else would be pretty simple, unfortunatly you probably would not gain a whole lot of power......
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Old 02-23-2009, 02:29 PM
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Re: Big bang, theory thread.

I wouldn't even worry about this. it's harebrained at best...

There is nothing much to be had from this anyhow.

the lopey idle comes from long duration cams. not "big bang" anything.
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Old 02-23-2009, 03:15 PM
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Re: Big bang, theory thread.

where did you get this "big bang" info from? if you can show me a motor that fires all cylinders at once, then i might be able to think thats possible. and cylinders in a rotary engine? is that in the rx9 or rx10? like h22a bb6 said. lol
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Old 02-23-2009, 03:37 PM
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Re: Big bang, theory thread.

its impossible to have all four cylinders firing at once.
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Old 02-23-2009, 07:44 PM
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Re: Big bang, theory thread.

It's impossible for any cylinders to fire in a rotary.
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Old 02-23-2009, 09:41 PM
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Re: Big bang, theory thread.

yeah i kno i was bein sarcastic lol
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Old 02-23-2009, 11:37 PM
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Re: Big bang, theory thread.

oh this thread is fun
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