W-2 Head questions

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rumblefish360 said:
Aaaaaagreed

@JoeDragster

Take a good look at the unobstructed intake port. They can both, TF vs W2, flow the same numbers but it’s not the same intake charge. (Amount)

Imagine for A minute there are two super long roller coasters side by side. The coasters will go into a tunnel. (This represents the intake port.)
Coaster ride 1 (TF) is 3 people wide. (Width of the port)
Coaster ride 2 (W2) is 5 people wide. (Width of the port)
Both coasters travel at 300 feet per minute. (Rate of air travel speed of the head.)
Start counting people as they go by you at the same time for 230 seconds.
(230 represents intake duration at .050.)

How many more people entered the tunnel?

Since coaster 2 (W2) has a (wider coaster) wider unobstructed port to allow more people in, the party at the last stop (cylinder) is bigger, louder and more bad *** than where coaster 1 (TF) ends up at.

The party hall where there going (cylinder) are both the same size. The more people you can cram into the hall (cylinder) the bigger the party and the louder the noise.
(More air & fuel for a bigger bang equals more HP & TQ.)
Click to expand...
Best. Analogy. Ever.
There’s gonna be a righteous party goin on inside my W2 motor and everyone’s invited!
 
I'll be there I have crashed many party's, there's going to be a big bang!
 
rumblefish360 said:
Aaaaaagreed

@JoeDragster

Take a good look at the unobstructed intake port. They can both, TF vs W2, flow the same numbers but it’s not the same intake charge. (Amount)

Imagine for A minute there are two super long roller coasters side by side. The coasters will go into a tunnel. (This represents the intake port.)
Coaster ride 1 (TF) is 3 people wide. (Width of the port)
Coaster ride 2 (W2) is 5 people wide. (Width of the port)
Both coasters travel at 300 feet per minute. (Rate of air travel speed of the head.)
Start counting people as they go by you at the same time for 230 seconds.
(230 represents intake duration at .050.)

How many more people entered the tunnel?

Since coaster 2 (W2) has a (wider coaster) wider unobstructed port to allow more people in, the party at the last stop (cylinder) is bigger, louder and more bad *** than where coaster 1 (TF) ends up at.

The party hall where there going (cylinder) are both the same size. The more people you can cram into the hall (cylinder) the bigger the party and the louder the noise.
(More air & fuel for a bigger bang equals more HP & TQ.)
Click to expand...
That is one of the best analogies I,ve heard to explain this. Aluminum material and small chamber does not necessarily mean better. The w2 was way ahead of its time and even today there are still only a couple of other heads that will beat it.
 
I agree as long as it is within its scope of useage and/or class. IE: extra sealing bolts, very raised ports, etc....
 
Duane said:
That is one of the best analogies I,ve heard to explain this. Aluminum material and small chamber does not necessarily mean better. The w2 was way ahead of its time and even today there are still only a couple of other heads that will beat it.
Click to expand...



AMEN to that. The open chamber in the W2 is FAR better than the W5 chamber and that chamber takes a TON of work to fix. And then it's only as good as the W2 chamber, barely.

There isn't a standard port head out there, with the exception of the 351C head that is better than the W2. Nothing. If someone started making the W2 in aluminum and making the shafts and rockers for it, the small block stoker world would revolutionize itself.
 
yellow rose said:
AMEN to that. The open chamber in the W2 is FAR better than the W5 chamber and that chamber takes a TON of work to fix. And then it's only as good as the W2 chamber, barely.

There isn't a standard port head out there, with the exception of the 351C head that is better than the W2. Nothing. If someone started making the W2 in aluminum and making the shafts and rockers for it, the small block stoker world would revolutionize itself.
Click to expand...
I know you don,t like books but in the old Larry Atherton book they talked about the w2 versus the Cleveland with it big ports and good reputation. The Mullen prepped w2 did not quite outflow the Cleveland, but they claimed that the w2,s dynamic on track performance out did the Cleveland because of the better short turn
Of the w2. That book also emphasized that flow numbers are not everything and that the w2 design was very well track tested to perform all around, but now the Cleveland was not your run of the mill head either.
 
Duane said:
I know you don,t like books but in the old Larry Atherton book they talked about the w2 versus the Cleveland with it big ports and good reputation. The Mullen prepped w2 did not quite outflow the Cleveland, but they claimed that the w2,s dynamic on track performance out did the Cleveland because of the better short turn
Of the w2. That book also emphasized that flow numbers are not everything and that the w2 design was very well track tested to perform all around, but now the Cleveland was not your run of the mill head either.
Click to expand...


Yep to all of that and a HUGE AMEN to not looking at flow numbers as the end game. Buying a flowbench was the biggest eye opener in engine build I've ever had. The flow number is about the LAST number I look at any more. When I sold that bench, I gave the guy my entire file of flow sheets. He was a bit pissed because almost half of them were numbers from say .300-.500 in .050 increments. Some were just one lift number with half a page of notes. He thought I wasn't doing it right. Hopefully he learned his lesson.

I did keep all the reverse flow and odd testing sheets I did for myself, so I still have those.

I can say that a set of well prepped W2 heads will out perform most of the stuff out there today with any name on it. Especially when the OE valve angles are maintained. And the ports aren't raised.
 
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