SilverWarrior

I bought a blox IM and a blox 68mm TB..

Should I port match the IM to the TB? I know that a blox IM inlet is 64mm?

So what should I do? And is it true that I can only make the IM 1 mm larger?
So 65mm will be the largest?

I appreciate if yoou guys can help me out with info.

instrument

you should contact that max bore dude on here
he's the ****, he walks around in a pamper.

suspendedHatch

Port matching can help if you're forced induction, but it will only hurt you if you're NA. Having an oversized tb NA will also hurt you.

Probably not welcome news but I thought I'd throw that out there.

SilverWarrior

uhhh........ so what is 68mm to big for my 2.0 L ALL motor setup?


And still need someone to answer my question..

ddd4114

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lay’s &raquo;</TD></TR><TR><TD CLASS="quote">uhhh........ so what is 68mm to big for my 2.0 L ALL motor setup?.</TD></TR></TABLE>
Yes.

I recommend selling it and getting one that's stock, or maybe a hair bigger.

WhiteOnRice

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by suspendedHatch &raquo;</TD></TR><TR><TD CLASS="quote">Port matching can help if you're forced induction, but it will only hurt you if you're NA. Having an oversized tb NA will also hurt you.

Probably not welcome news but I thought I'd throw that out there.</TD></TR></TABLE>
Why is this? Isn't this the same principle as ITBs?

ddd4114

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WhiteOnRice &raquo;</TD></TR><TR><TD CLASS="quote">Why is this? Isn't this the same principle as ITBs?</TD></TR></TABLE>
What do you mean?

HondamanXxX

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by suspendedHatch &raquo;</TD></TR><TR><TD CLASS="quote">Port matching can help if you're forced induction, but it will only hurt you if you're NA. Having an oversized tb NA will also hurt you.

Probably not welcome news but I thought I'd throw that out there.</TD></TR></TABLE>

Truth.

SilverWarrior

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ddd4114 &raquo;</TD></TR><TR><TD CLASS="quote">
Yes.

I recommend selling it and getting one that's stock, or maybe a hair bigger.</TD></TR></TABLE>

Are you serious? You're saying a 2.0 L motor making about 205-10 whp 68 mm is too big? People say to go bigger..

ddd4114

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lay’s &raquo;</TD></TR><TR><TD CLASS="quote">Are you serious? You're saying a 2.0 L motor making about 205-10 whp 68 mm is too big? People say to go bigger..</TD></TR></TABLE>
Who's "people"?

And yes, I'm serious. Think about this: the H22 comes with a 62mm throttle body stock, and that's a 2.2L engine producing about that much power.

SilverWarrior

For a Motor with 11.5 comp fully built?

ddd4114

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lay’s &raquo;</TD></TR><TR><TD CLASS="quote">For a Motor with 11.5 comp fully built?</TD></TR></TABLE>
Throttle body selection depends primarily on cam profile and plenum volume.

SilverWarrior

Stg2

ddd4114

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lay’s &raquo;</TD></TR><TR><TD CLASS="quote">Stg2 </TD></TR></TABLE>
Call the manufacturer to see what they recommend.

In general, you do not need a throttle body that's much bigger than stock, if at all. Only radical N/A builds need a larger throttle body, and even then, it wouldn't need to be much bigger.

Why do you think you need a larger throttle body?

SilverWarrior

because mine is tiny.. 62 isn't big enough my intake is almost bigger then it. Need more airflow

ddd4114

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lay’s &raquo;</TD></TR><TR><TD CLASS="quote">Need more airflow </TD></TR></TABLE>
A larger throttle body only supports more airflow. Just because you have a larger one, it doesn't mean that it will actually flow more. The only time you need to replace yours is when it is known to be a restriction.

Also, if you're not flowing more air at a particular engine speed, the larger throttle body will cause the air to move slower, which hurts performance. It's a similar reason why you don't want a 4" exhaust on your car.

Throttle body selection is much more involved than "mine looks too small" or "I have some mods, so I need a bigger one". You need a lot of theory, math, and measurements to determine the ideal throttle body size for a particular engine setup.

SilverWarrior

I just read this thread..

and most people are not with you on the size of tb ..

https://honda-tech.com/zerothread?id=2104245

suicide_shift

im running the bdl 70mm.........................

id say go ahead and port it. otherwise the'd be no reason to bust out the wallet for your TB

i mean you couldve just stayed stock and saved the what 350? i dont ******* know. expletive the b series. for cheap asses and 17 year olds XD jk

SilverWarrior

port it to what?

suicide_shift

actually here is my honest opinion.


11.5 comp ratio
2.0 L build
skunk2? stg 2 cams
and people are telling you stock is best???????? power gains are seen running bigger throttle bodies on factory b16a motors (the ones with the 62 mm throttle body sizes)

you'll likley need more air. and the TOO much air = slower movement thing is bullshit that a user that has never built a motor started.

in fact i love it how all these people follow this garbage then bitch about not being able to run 15 seconds in the quater miles..........WTF man i have a tennis ball in my spoon exhuast for back pressure and a restrictor plate on my TB why doent my motor make any power?????

suicide_shift

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lay’s &raquo;</TD></TR><TR><TD CLASS="quote">port it to what?</TD></TR></TABLE>

68 or a little more if you want. you can go up to 70 or 71 i belive on the blox manifold


also this secton of the website has alot of kids who dont really build motors and talk alot of ****. you might want to take this to a more knowledgble section. weld/fab. maybe all motor etc

in here there are alot of ricers

SilverWarrior

i called inlinefour today and they told me the max they can port match a aftermarket intake manifold is 1 MM higher.. so basically 65mm is the highest they can go..... I don't get it.

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

in here there are alot of ricers </TD></TR></TABLE>

haha serious..

ddd4114

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by suicide_shift &raquo;</TD></TR><TR><TD CLASS="quote">and people are telling you stock is best???????? power gains are seen running bigger throttle bodies on factory b16a motors (the ones with the 62 mm throttle body sizes)

you'll likley need more air. and the TOO much air = slower movement thing is bullshit that a user that has never built a motor started.</TD></TR></TABLE>
I guess you can't read well.

I didn't say stock was best; I said call the cam manufacturer and see what they recommend. I know nothing about the cams (including the brand). It also depends on the intake manifold plenum volume. If the plenum is smaller, the throttle body can be larger.

Also, I didn't say that too much air = slower movement. I said too big of a cross-sectional area and and equal amount of air = slower movement. If the throttle body is not a restriction, then there is no need to upgrade it. If it's too big, you will lose power.

As far as the "user who never built a motor" and "in here there are alot of ricers" comment: you're 19. I guess you're the all-knowing expert, huh?

HondamanXxX

This man really knows how to eplain his ish. Agreed 100%

Luserkid

DDD4114 did a great job But sadly to say i dont think the message went through to Lay's. But hopefully someone will look at this thread and learn something about it. As for Lay's you could have whatever throttle body and intake manifold you want. Since you dont seem to listen to what you should do (call the manufacturer and see what they recommend for your set up).

On a personal note. I dont considerer anything that can run off pump gas a fully built motor. Its a nice build and thats about it. 11.5 c/r and sk2s2 i dont think your in the 250whp range. I would go with a 65mm TB