Flow Test Showdown: Honda K vs. 4B11!

On the Street Alpha podcast, Dave named his top two contenders for the best-flowing import cylinder heads: the Honda K and the 4B11. But talk is cheap, so we put them to the test! In this video, we reveal which head comes out on top in a head-to-head flow battle—and the winner will move on to face the legendary Ford VooDoo head. Who will reign supreme? Watch to find out!

[drewski]

Looks like you’ve found that YouTube niche you’ve been looking for Dave. Congrats and thanks on the new series.

[markconte]

I’ve wanted this test since we first started talking about the 4B11. Thanks Dave!

[Zzz]

You made it!!! I remember hearing you mention this on the podcast recently and now it is here!!

[highpsiguy]

wake up to a Headgames video on a Friday morning!

AND it's a flow video!!! YES! Thank you VERY MUCH Dave! Have a blessed weekend Brother!

5:35 Whats the cause of the "increase" in flow numbers when adding a pipe/tube? Is it because its increasing air velocity? Its cool to see the result of something you've mentioned dozens of times on the channel

It would be super cool to see a graph in the future showing flow on both sides for ALL the most popular engines in the modified world. 2j, 4B11, 4G63, K20, B16/B18, coyote, etc etc etc

[PiterStreak]

Yes, more of these please! Super informative just to know.

[danbrown]

If you do a K vs K head flow battle that would be cool, you used a RBC head in the video, and in the K series community it’s “common knowledge” that the PRB and RSP heads both outflow the RBC, it would be awesome to see some real life data confirming or denying that bit of info

[edsmachine]

Nice test comparison.
Thanks for sharing. 👍

[TMRDAM]

Nice video! Maybe you should have used a Honda S2000's head, it outflows both these heads and probably every OEM K series head.

[AwesomeBoss]

would actually be really interesting to compare this to a 2ZZ or a SR16VE N1

[Juliannie]

I agree with whoever said you should continue this series!

[melvingualdarrama]

Let's go k series love the video Dave...

[funkyd]

Would be interested to see K20 versus 4B11 after a full treatment by headgames to see differences in potential, not just stock versus stock

[tlovsoe]

bmw s50 or s54 would be a great addition to this comparison as it has the same bore. also the s70/2 (mclaren f1 engine) has a slightly modified s50 head.

[boostben]

Hey Dave, have you flowed the different k series heads? I've seen some info on the interwebs but it seems a bit suspect 🤔

[aarr]

How is the K series compared to the Fseries s2000 head?

[steammines]

have you ever worked on volvo redblock head either the 8v or the 16v ones? would love to hear your thoughts about that

In terms of turbo engines, this is a shocking result for a 4b11t head.

[shanerorko]

Also, can you flow the exhaust in reverse and normal, so we can see how good the port is at stopping reversion?

[adrianvega]

So assuming k20a2/z1 head right? I got both engines and are great. Curious about the k24a2.

[Thenorthforknwelder]

What’s the route to go on a 2.3 ecoboost head? Would you do one