This engine is a ls/vtec 13:1 compression, 81.5 x 89, crower 63413 cams, custom intake manifold, 65mm tb, wiseco 5cc pistons and probe rods.
Headers tested were a stock ITR, DC JDM, SMSP B19 1 piece mild steel, SMSP B20 1 piece soft step mild steel and the new big tube Rage stainless multi piece header as shown in https://honda-tech.com/zerothread?id=1669910

All headers were tuned by me with a perfectly flat air fuel of 13.2/1.
Each header was tried leaner and richer and each one was tuned where it liked it the most. Vtec was also was changed on each header for the best transition possible.
A bin file was created for each header.

Most of the headers tested were designed for bigger engines, but this particular engine seemed to come in on the bottom end of the needed engine size and compression to test.

In two weeks all of the same headers will be tested on my drag engine.
B20 vtec 84.5mm x 89mm 14.3/1 compression

Note: the SMSP headers are the 1 piece versions and don't use true merge collectors on the primaries like his multi piece versions. SMSP states mid range should be a little better on the multi piece units.






From left to right: stock usdm itr, cheap header, rage big tube, Smsp B20 1 piece, Smsp B19 1 piece


B19 vs B20 1 piece

 

can you make the pics of the dyno graphs, can't really see. props for doing the test though.

 

What? Couldn't test these vs. the RMF?

 

im changing them right now

 

Interesting.

 

AWESOME COMPARASON and great results though it would be nice to see this on a b16

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16crexster &raquo;</TD></TR><TR><TD CLASS="quote">AWESOME COMPARASON and great results though it would be nice to see this on a b16 </TD></TR></TABLE>

Why? because thats what youre running?

 

anyway to blow up the pics it looks as though our header(rage) killed in the midrange and only lost by 2 hp on top but its hard to see
thank you Chris Whitfield

 

an air fuel graph would be awesome also if i am reading the graph correct the rage header (whitfieldracing) made approx 10hp from 5k- 6k over all the rest?? can you do a price breakdown on these as well?? thanks for your time

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption &raquo;</TD></TR><TR><TD CLASS="quote">Why? because thats what youre running? </TD></TR></TABLE>


yes and no i just never seen a header comparrison on any 1.6ltr b16 im not being a dick just hoping and praying

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16crexster &raquo;</TD></TR><TR><TD CLASS="quote">AWESOME COMPARASON and great results though it would be nice to see this on a b16 </TD></TR></TABLE>

those headers were not designed to work well on a b16a. im sure you can find some test with the itr and dc on a b16 but as far as the rage and smsp they just arent for a engine that small. so not really a point in testing them on that application.

shawn

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16crexster &raquo;</TD></TR><TR><TD CLASS="quote">


yes and no i just never seen a header comparrison on any 1.6ltr b16 im not being a dick just hoping and praying </TD></TR></TABLE>

not to be an ******* but if youve got a b16 and want to spend 800 on a header, spend 800 on a gsr bottom end instead. i promise itll make more power

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WHITFIELD-TUNED &raquo;</TD></TR><TR><TD CLASS="quote">an air fuel graph would be awesome also if i am reading the graph correct the rage header (whitfieldracing) made approx 10hp from 5k- 6k over all the rest?? can you do a price breakdown on these as well?? thanks for your time </TD></TR></TABLE>
Sorry for the image size im trying to fix it but image station is pissing me off.
The air fuel wasn't logged on the dyno. I used my fjo widemand logged to my laptop so all air fuel recordings were done on the laptop not the dyno. They all had flat air fuel. Read my edited original post i forgot to mention that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WHITFIELD-TUNED &raquo;</TD></TR><TR><TD CLASS="quote">anyway to blow up the pics it looks as though our header(rage) killed in the midrange and only lost by 2 hp on top but its hard to see
thank you Chris Whitfield</TD></TR></TABLE>
Hope that helps Thats the best i could do for now

 

thank you sir

 

So the DC header made the most midrange, second highest TQ while the SMSP made the most BHP and TQ? Maybe the DC is not that bad unless you are going custom to match your motor. Now I atleast know why Vteckidd lost top from my engine dyno to his chassis dyno.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF &raquo;</TD></TR><TR><TD CLASS="quote">So the DC header made the most midrange, second highest TQ while the SMSP made the most BHP and TQ?</TD></TR></TABLE>Thats what it says, i just posted way bigger graphs hope these will be good enough. They were all tuned


Modified by bearsEK at 2:03 AM 7/16/2006

 

whats the price like on the B20 header? on the SMSP site it says $1250 but thats for SS, is that the same header?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stealth1 &raquo;</TD></TR><TR><TD CLASS="quote">whats the price like on the B20 header? on the SMSP site it says $1250 but thats for SS, is that the same header?</TD></TR></TABLE>
All of the smsp headers that were tested were 1 piece headers and mild steel.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bearsEK &raquo;</TD></TR><TR><TD CLASS="quote">All of the smsp headers that were tested were 1 piece headers and mild steel. </TD></TR></TABLE>

so it would be around $800 im guessing based of there pricing structure?

 

Good Test -

Everything is laid out nice and good info from the tester, from the info given on the engine size I can say that the engine used as well as the new one thats going to be used it smaller then the size we planned people to us the "big tube" header on. This could explain the small difference in power from 5600 up. The bigger tubing isnt too big for such a size motor.

Can we get the &gt; Cost per Unit ....
&gt; Material per Unit
&gt; Design - meaning avail in this and that and off the shelf or custom per unit.

Jason Whitfield

http://www.WhitfieldRacing.com


Modified by Whitfield Inc. at 7:11 PM 7/15/2006

 

Great test and test control, few people take the time to balance AF and change VTEC on each header to make the test legit. Keep up the good work, can't wait to see the results on your race car.

 

Great results, I'm in for the next dyno on bearsEK race motor.

Thanks for taking the time to tune every header and posting the results

 

Nice test, thanks