Has anyone tried this or know someone that has it??? GOOD? BAD? Cost Too Much?? etc..?



If you go here, they have a video of the manifold on the dyno.. ??? they said 30 WHP on a StOCk motor???

http://dh-racing.com/hseries.shtml

what do you think??? looks different...?? any good?? I was thinking about getting SKUNK2 manifold and came across this one.. should I stick with Skunk2 or try this weird "manifold"?

Let me know what you think...

Thanks

 

30 WHP! With what other mods? Where is the plenum volume? It looks like #1 and #4 cylinders wouldnt flow as good as #2 and #3. Do you know what the underside of this plate looks like? It seems it would work better with the Blacktrax style lower IM.????? got me!!!!

 

my guess is when they said stock, they meant stock block, not completely bone stock. i've looked at this im before; looks pretty interesting. i'll bet you get pretty good throttle response with it as compared to a stock-style manifold. most people on the boards here seem to think that the euro-r is the best choice for a manifold, however; there are a wide range of responses and experiences with the S2 one. for selfish reasons i would say get it and tell us how it works out bear in mind it appears there are no provisions for FITV, IACV, or EGR; so it seems this is pretty much a race-only manifold.

 

do a search on DH Racing!!!!!!!!!!

 

Isn't that just a plate that replaces the top part of the IM? It doesn't look like all the Intake ports would be getting the same air flow either.

:S

 

http://www.preludepower.com/forums/s...d.php?t=305148

This guy has one......I personally would never buy one but to each his own......

 

so from the pictures in that linked post above^.

that guy was able to drill out holes and make connections for egr ect? or did they come prefabbed?

 

it looks like the EGR bolts on the bottom part of the intake manifold? I just can't see where they mount the IACV? maybe its also there too near the firewall side???

 

Either way it looks like a big waste of time/money. I still don't see how this could give actual power gains.

I'd rather stick with OEM or Euro-R.

 

The actual Crx in the video is a customer of ours. We have talked back and fourth and he has the dyno sheets to prove the gain as well as a before and after dyno. He also has a few video's of the car in action with slicks and is in the 13.2-12.9 area at the moment. Last pass was a 12.9@107 but still working things out. Stock JDM H22A internals DH-Racing Intake Mani as seen and a DH-Racing Header. Exhaust, NoN LSD. Dyno sheet I believe was 205 whp and 16x trq.

I understand where the gain could be, being the TB is on top and sucking air evenly in...
would I trade my Euro R for it probably not at this time...

 

Is saw the dyno chart somewhere and it doesnt really do anything in the mid-range but up top the power just keeps building way after stock power falls off, it's pretty cool.

 

--UP----
hallo, i am from germany.


had someone tested this top mount intake??
need more info.
thanks.

 

it seems as though this post has been dead for awhile.... however i have personally tested a central runner TB design i retrofitted to my N/A F22a build, and feel people need to understand when to use this application

The idea behind centralizing a throttle body on the intake runners is even displacment of air (more so than stock) and is a step down from ITB's(individual throttle bodies) which can run upwards of 2000-3000$

however there is questionable aspects of this design, such as lack of a plenum, which reduce the period of time for storage or "scavenging" of air, which in low-end "torque" situations this effect is beneficial!

this intake manifold shows limited benfit in unmodified engines, more aggressive gains however, can be seen in modifed heads (porting,over-size valvetrain, mild to aggresive cams, etc...) the downfall is the inconvience of tuning and lack of idle assist.

its best said this manifold is a clever design for racing (escpecially(SP?) track racing) and ensuring more even air displacment accross the board than a stock application. but for the stock-like DD, stick to a pipe and filter.

-mike

 

30whp?
I'd have to guess this is another Company that does an untuned baseline, and then a tuned+their product run. Typical way to riff-raff the dyno #'s.

NOTHING makes +30whp N/A on a stock H22A.

$335 though......seems like a good price......Would have to see unboased dyno #'s to back it up.

Having a REAL REAL hard time swallowing this......They've been building H22s for a long time, have made 350hp on an engine dyno.......STILL!

 

my motor is near stock, there are just a few mods.
H22A7 Type R block+head
head is light ported
header type r
dual runner intake
ferrea vaules
200cpi
invidia exhaust catback g200
tb=64mm
flywheel 6kg
cams are oem
p28 ecu

dyno with the p28
231hp 241nm

 

And this is relevant how?

 

hmmm a type r head on a prelude...
amazing people still try to pull that one...
congrats on having a car honda never made
but back to the original topic... it looks like in one picture it does open up to the other runners but i think the blacktrax mani would be the only way for this to be benificial.
if someone wants to fab something like this up for me i can get to a dyno real easily for testing. what size do they say the tb is? or does it not come with one?
i might see if my cousin can make one of these for decently cheap for me and do it on my own...

 

whad chew talkin bout homie i gots 2.

haha

 

You ********. The H22A7 is from the Accord Type R. It's as real as it gets.

 

And you are correct sir! The h22a7 is the accord euro r!

 

No, the Accord Euro R is a JDM vehicle. It comes with the H22A. Like I already stated, the H22A7 is from the EuDM Accord Type R. These are 2 different machines.

 

-"my motor is near stock, there are just a few mods.
H22A7 Type R block+head
head is light ported
header type r
dual runner intake
ferrea vaules
200cpi
invidia exhaust catback g200
tb=64mm
flywheel 6kg
cams are oem
p28 ecu"


This argument is off topic, and what do these specifications have to do with the manifold that is being discussed? at no point did you mention a central mounted TB.

i can only guess you intended to show off your seemingly rare engine......

-mike

 

i have heard of companies like K&N utilizing similar "hat tricks"
by utilizing the wrong gear ratio to acheive these types of artificial gains......
however it is also likely i could have heard wrong?

-mike

 

Dave Hickman is nothing but trouble, stay away...

read..
https://honda-tech.com/forums/forced-induction-16/dh-racing-2452283/

more
https://honda-tech.com/forums/sales-feedback-157/%2A%2A%2A%2Adh-racing-com-scammer-%2A%2A%2A%2A-2608628/

more
http://k20a.org/forum/showthread.php?t=62846

more
https://honda-tech.com/tags.php?tag=dh

 

thats very sad, i was grinding teeth reading these posts.... and just incase there is sombody unwilling to read through,

DH-RACING seems to have made 10+ years bank off scamming people out of there money.