displacement

[Kven]

im comparing the displacement; if youve ever calculated the mass flow rate of an (large displacement)engine; you'll see that it requires more mass flow then a smaller engine. then, plot it on a compressor map; the smaller displacement engine requires less air. a turbo is efficient around a certain amout of flow with a certain amount of boost. the reason why the supra has huge turbo lag is because of the amount of boost. put that same turbo on a honda engine(with same cr), it will lag even more. put that same turbo on a mustang engine(with same cr), it will lag less. of course its not all about the compressor; the exhaust side of the turbo also will determine amount of lag, etc. if you want me too, i can plot a map for a b18 and a b16 engine and post it up.

[mellowboy]

Ok i know all that bro. What i'm tryin to say is ...it is not really necessary to do all that. You see what i'm say'n? You can keep a stock displacement when goin FI and be fast already. A turbocharged built b16 can hit 11s and its still a 1.6 ltr. A b16 all motor is very hard to get it into the 12s. For an example...i had a full b16a swap and i love stay'n all motor. I bought a complete ITR shortblock with CTR pistons from a good friend of mine. All i did is switched the block and i hit high 13s. Of course i had bolt ons and minor suspension work, upgraded clutch (action clutch). I mean yeh you can hit 13s b16a but it requires more work than a 1.8 ltr. So again its not really necessary to stroke the motor when goin force induction

[Kven]

ok i see what you are talking about. i was never talking about stroking or increase the displacement, i was just comparing large displacement(like the +3l v6/8s) and small displacement engines; boostwise. i agree that you can just keep the motor stock displacment for FI. come to think of it, i dont think any of the 8second turbo hondas are bored or stroke(mostly stock displacement b18's), or am i wrong?.

[mellowboy]

Originally Posted by Kven

i dont think any of the 8second turbo hondas are bored or stroke(mostly stock displacement b18's), or am i wrong?.

Actually some bored it out to 1.9 or bigger. They're just competiting to be the fastest.

[383PhoenixAm]

Why is this forum limited to that Honda bs? I have nothing against it, but that's all anyone talks to here. There ARE other make engines with higher displacements than Hondas, you know. And a lot of them can get a lot better than 11s, easier.

[mellowboy]

You go complain to the mods about it then. Everyone talks about everything here. They took out Honda technical forum and merged it with all the others. So you gonna see lots of honda heads here.

[383PhoenixAm]

I'm not complaining about the Honda influence, I'm talking about the closed-mindedness. 2 liters isn't exactly the biggest engine in the world.

[mellowboy]

Originally Posted by 383PhoenixAm

2 liters isn't exactly the biggest engine in the world.

It is in the civic/integra world. Remember that honda civics are light as hell.

[383PhoenixAm]

Yeah but I don't see why Engineering/Technical has to be exclusively a civic/integra world. So they're light. They still can't get any faster than 9s or 8s. Most of them can't break 13s without at least 6 or 7k.

[383PhoenixAm]

Oops..I meant 14s.

[mellowboy]

I broke into high 13s and it cost me well under 3300. The motor is still stock. Stock b16a (1200 for the motor) on a CRX would hith 14.7 at best, b18c5(3500-4200) would hit high 13s at best. I had a full b16a swap for 1500. I bought integra type r shortblock from a friend of mine for 1200. My compression i believe was 11:7 or 11:8 on civic type r pistons. Slapped on my b16 head, jdm dc sport headers (used), action clutch, falken azenas tires, cat-back and cold air intake along with a chipped ecu but hardly any difference. . . Thats all motor. If it was turbocharged B18b or ls motor ...high 12s for sure. LS motors can go anywhere between 700-1200 and a bolt on turbo kit can go anywhere between 2700-3200. Do the math

[public]

Yeah, I have to agree. $5000 and any old V8 willput you way under 10 seconds. But I do enjoy seeing these guys get wild with these little 4 cylinders.

[mellowboy]

I'm just tryin to correct the guy about the price. It doesn't take 6-7g's to make a honda run 14s.

[383PhoenixAm]

Alright, I'll correct myself. 4 grand for mid 13s. It still doesn't prove any point. And that's still a large amount of money for that particular timeslip.
My point was that higher displacements have more potential than the lower. And I'm not talking exclusively about same block with a little more stroke. The small displacement motors only advantage today is the OHC setups. This wouldn't mean that higher displacements can't have more potential, because you can also go out and buy an overhead cam V6 or V8 from some, though few places, and get the same amplification, it its just not needed for higher displacements because they naturally can produce more. In most cases small displacements are for economy. That's all.
And no, I'm not messin with Hondas or whatever, but its ignorant to say a smaller explosion can have more power than a large one. It should be common sense.

[CBFryman]

new Nissan Maxima's will run 14's with a CAI, exaust, headers, and Mass air flow sensor...all that cost less than 1000...and dont tell me otherwise...ive seen with my own two eyes...