Why Kids Buy Japanese

[dieselgeek]

Re: Why Kids Buy Japanese

Good example, that is an LS engine that pushed the limits of a stock block. just over 4hp per cube. Not exactly a street/strip car, but totally awesome. you know 427LS on here built that car, right?

Hey DG your a little off on the math, 1900hp divided by 352ci equals 5.4 hp/ci.

And no I didn't know that 427LS built that car. It's pretty bad ass. As in I like, I like. ;) ;D

Sorry, thought it was 427 cubes.

either way - at that power, that engine didn't live long without the heads coming off right? so it's kinda beyond your original point.

[TC]

Re: Why Kids Buy Japanese

either way - at that power, that engine didn't live long without the heads coming off right? so it's kinda beyond your original point.

It might have lifted the heads, but it didn't rip the block in half like you were trying to say. ;) That only happens with Ford motors. ;) ;D

[shaun callaway]

Re: Why Kids Buy Japanese

an that brings up a question I've had for years, why doesn't a 4 cylinder at 8000 sound like a v8 at 4000 rpm?

They both sound better than an electric. Not that I have anything against electrics.

actually the srt 4 (neon) is pretty close to a v8 with the modified exaust. oh and this one only runs to 6700 rpm.

[TC]

Re: Why Kids Buy Japanese

They both sound better than an electric. Not that I have anything against electrics.

Ya electric cars are funny, your like did you hear something and then you turn around and the time board at the end of the track is saying 8 something. :o

[dieselgeek]

Re: Why Kids Buy Japanese

either way - at that power, that engine didn't live long without the heads coming off right? so it's kinda beyond your original point.

It might have lifted the heads, but it didn't rip the block in half like you were trying to say. ;) That only happens with Ford motors. ;) ;D

I was talking about first gen SBC and BBC engines, the LS engiens are a great improvement - but still not as stout in OEM condition as any of the GM inline engines, and a handful of imports. Also, yours is a poor example of power per cost - that engine is unbelievably high dollar.

[squirrel]

Re: Why Kids Buy Japanese

Scott, instead of looking at hp/ci or hp/$, how about just looking at max HP with a reasonably stock engine?

How do the Ecotecs compare to the inline Japanese engines? Is 1000 hp a reasonable limit for most of them? or can you run them up to 1500 and have them live? How do these compare to the truck LSx engines?

[dieselgeek]

Re: Why Kids Buy Japanese

Scott, instead of looking at hp/ci or hp/$, how about just looking at max HP with a reasonably stock engine?

How do the Ecotecs compare to the inline Japanese engines? Is 1000 hp a reasonable limit for most of them? or can you run them up to 1500 and have them live? How do these compare to the truck LSx engines?

Toyota inline six wins with 1000-hp capability on it's stock pistons, rods, crank, block, head, cam. Needs a large single turbo, different exhaust and intake manifolds, and fuel system upgrades though. I also think it might be the cheapest way to 1000hp on just about anything.

From what I read (never tuned one though) the vortec 4200 GM engines, with piston and rod upgrades (not all that pricey) are 1200+hp capable. Cunningham's car was heavy and went 8's... it had stock crank, block.

Ecotec's have been pushed to 600hp on stock internals! not bad for a junkyard $350 engine. Piston and rod upgrades take that figure way up.

[Matt Cramer]

Re: Why Kids Buy Japanese

an that brings up a question I've had for years, why doesn't a 4 cylinder at 8000 sound like a v8 at 4000 rpm?

Firing order - the typical V8 has times where they fire 3 cylinders on one bank and one on the other, giving a more uneven exhaust note.

[joe_rocket45]

Re: Why Kids Buy Japanese

even single exhaust sound different, and the pulses are equalized like that.

[Matt Cramer]

Re: Why Kids Buy Japanese

Only if you have a set of headers that cross over between banks - you still don't get a completely even order with a single exhaust.

Now, why I've heard some inline sixes like a turbocharged BMW M6 sound a lot better than any inline four is a bit of a puzzler.

[joe_rocket45]

Re: Why Kids Buy Japanese

I don't know of any v8's where 3 cyls on one bank fire at a time, also the pulses have to be equal with single exhaust, don't they.

[Matt Cramer]

Re: Why Kids Buy Japanese

Typical SBC firing order:

1-8-4-3-6-5-7-2

Split this at a different point, and you get this:

2-1-8-4 3-6-5-7

There's one segment with three on the left and one on the right firing, and vice versa.

[joe_rocket45]

Re: Why Kids Buy Japanese

Typical SBC firing order:

1-8-4-3-6-5-7-2

Split this at a different point, and you get this:

2-1-8-4 3-6-5-7

There's one segment with three on the left and one on the right firing, and vice versa.

Miss understood what you meant, but i still don't see how this has any effect on a single exhaust..

[RyanWalker]

Re: Why Kids Buy Japanese

Mr. Deiselgeek, Top Fuel motors STILL run a hemi based design. We got into this argument before. Go type in any search engine, WIKIPEDIA TOP FUEL MOTOR. Seriously read it. Tell me what you find...... Oh yeah and 16hp/ci. Show me any inline 4,6,8,12 whatever that can do that. Nitro or not.

[dieselgeek]

Re: Why Kids Buy Japanese

Typical SBC firing order:

1-8-4-3-6-5-7-2

Split this at a different point, and you get this:

2-1-8-4 3-6-5-7

There's one segment with three on the left and one on the right firing, and vice versa.

Miss understood what you meant, but i still don't see how this has any effect on a single exhaust..

The sound is different because it's not just what's coming out the exhaust pipe, that makes up the "noise" that reaches your ears... there's a LOT to it.


RYan Walker, the "hemispherical combustion chamber" (if that's what you are referring to as "hemi") is common to a lot more engines than those labelled "hemi." There's nothing about a Top Fuel engine that descends from the original Chrysler Hemi, any more than a current NASCAR engine descends from a "New Hemi" from Mopar. The Top Fuel engine is simply something *designed* to make that kind of power per cubic inch, and I'm sure if someone wanted to design, from scratch, an engine with fewer cylinders that makes the same power per cube, they would do it. But since there's no reason, because there's no race sanction that dictates engines like it, guess what? no one makes them.

This discussion is about OEM / Production engines anyways. Not one-offs built for a specific purpose. No one takes a top fuel motor and drives it to Drag Week.