can somone prove me that miror polished intake ports are bad?

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Jun 23, 2007 | 01:23 PM

RACEPAK

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can somone prove me that miror polished intake ports are bad?

everybudy says it needs to be a bit rigid, i wanna know y.

Modified by RACEPAK at 3:10 PM 6/23/2007

Jun 23, 2007 | 01:41 PM

DonF

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From: Atl. Beach, fl, duval

Re: can somone prove me that miror polished intake ports are bad? (RACEPAK)

Look up boundary layer flow in you Aeronautics books. Or even look at a golf ball.

Jun 23, 2007 | 03:07 PM

mar778c

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From: Near Philly, USA

Re: can somone prove me that miror polished intake ports are bad? (DonF)

You mean fluid dynamics.

And yes a certain amount of turbulance or Reynolds numebr higher than 3500 is required.

Jun 23, 2007 | 03:18 PM

DonF

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From: Atl. Beach, fl, duval

Re: can somone prove me that miror polished intake ports are bad? (mar778c)

Not really, a Reynolds number is not based on fluid flow. Or fluid dynamics. When is the last time you saw a "wet" wind tunnel?

Jun 23, 2007 | 04:21 PM

AznBlueBoy

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From: Disneyland

Re: can somone prove me that miror polished intake ports are bad? (Shhh I'm duckin GK)

my portflow head is polished.
what's wrong with that?

Jun 23, 2007 | 04:36 PM

Combustion Contraption

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From: So Cal

Re: can somone prove me that miror polished intake ports are bad? (AznBlueBoy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AznBlueBoy »</TD></TR><TR><TD CLASS="quote">my portflow head is polished.
what's wrong with that?</TD></TR></TABLE>

wow.

Jun 23, 2007 | 04:47 PM

one slow coupe

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From: Damascus Maryland

Re: can somone prove me that miror polished intake ports are bad? (Combustion Contraption)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption »</TD></TR><TR><TD CLASS="quote">

wow.</TD></TR></TABLE>

lol. would like to know as well

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Jun 23, 2007 | 06:23 PM

mar778c

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From: Near Philly, USA

Re: can somone prove me that miror polished intake ports are bad? (DonF)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF »</TD></TR><TR><TD CLASS="quote">Not really, a Reynolds number is not based on fluid flow. Or fluid dynamics. When is the last time you saw a "wet" wind tunnel?</TD></TR></TABLE>

Ahh, no Don. Reynolds number can and is applied every where as a measure to determine the onset of turblence. It does not matter if it is a fluid or gas, "wet" or dry.

See here:
http://en.wikipedia.org/wiki/Reynolds_number

Jun 23, 2007 | 07:11 PM

Professor15

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From: Long Island, N.y, usa

from my understanding is that one reason for leaving the intake port a bit rough is to help mix the air-fuel ratio to create a more even burn.

Jun 23, 2007 | 09:10 PM

#10

dfoxengr

Joined: May 2002

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From: banned NC

Re: can somone prove me that miror polished intake ports are bad? (mar778c)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mar778c »</TD></TR><TR><TD CLASS="quote">Ahh, no Don. Reynolds number can and is applied every where as a measure to determine the onset of turblence. It does not matter if it is a fluid or gas, "wet" or dry.

See here:
http://en.wikipedia.org/wiki/Reynolds_number</TD></TR></TABLE>

correct, but in a motor you wont get a reynolds that is anywhere close to 3500.
itll be orders of magnitude higher

Jun 23, 2007 | 09:43 PM

#11

RMF Headers

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From: he said touch the blue one

Re: (Professor15)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Professor15 »</TD></TR><TR><TD CLASS="quote">from my understanding is that one reason for leaving the intake port a bit rough is to help mix the air-fuel ratio to create a more even burn.</TD></TR></TABLE>
What do you think the air/fuel ratio is on a golf ball?

Jun 23, 2007 | 09:49 PM

#12

d15Beta

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From: r4, mars

maybe it needs the rougher texture not by mixing the air fuel ratio but

to MAINTAIN the good mix... without turning the fuel into puddles on the wall or floor?

Jun 23, 2007 | 09:59 PM

#13

Combustion Contraption

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From: So Cal

doesnt fuel spray directly on the back of the valve in our B and K motors?

Jun 23, 2007 | 10:10 PM

#14

RACEPAK

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Re: (Combustion Contraption)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption »</TD></TR><TR><TD CLASS="quote">doesnt fuel spray directly on the back of the valve in our B and K motors?</TD></TR></TABLE>

thats what i was thinking...... it sparys on the valve.... so whats the deal?

maby some pepoles have been fooled over the years by efi and carb? and the card should have a rough surface?

Jun 23, 2007 | 10:32 PM

#15

Black R

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From: Atlantis

Re: can somone prove me that miror polished intake ports are bad? (AznBlueBoy)

Jun 24, 2007 | 03:42 AM

#16

7rrivera7

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From: Comerio, PR, USA

Re: can somone prove me that miror polished intake ports are bad? (Black R)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black R »</TD></TR><TR><TD CLASS="quote">

exhaust side, yep.

intake side, orly?</TD></TR></TABLE>

What does "orly" mean...Oh Really?

Jun 24, 2007 | 04:55 AM

#17

GarageAlchemist

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Re: can somone prove me that miror polished intake ports are bad? (7rrivera7)

well...

it's talk about a lot, but i'm sure the difference is really under 1% of the flow, if that. As far as fuel atomizing, doubt on a honda port, and a tuned setup it would make a difference at all..

i've yet to see a solid test on the subject, questions like this remain up in the air, unless someone starts handing people dollar bills

Jun 24, 2007 | 07:57 AM

#18

lude98SH

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From: Drexel Hill, Pa, 19026

Re: can somone prove me that miror polished intake ports are bad? (GarageAlchemist)

doesnt endyn do fuel atomization bumps or something to help atomize fuel ?? Ive heard of it but never saw anything on it.

Jun 24, 2007 | 10:01 AM

#19

lohatch

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From: the backwoods, usa

Re: can somone prove me that miror polished intake ports are bad? (lude98SH)

let me see your grill

Jun 24, 2007 | 11:41 AM

#20

CivicVX94

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From: Florence, Ky, USA

Re: can somone prove me that miror polished intake ports are bad? (7rrivera7)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 7rrivera7 »</TD></TR><TR><TD CLASS="quote">

What does "orly" mean...Oh Really?</TD></TR></TABLE>
i'm thinking orally....orally polished is always best

Jun 24, 2007 | 11:50 AM

#21

CivicVX94

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From: Florence, Ky, USA

Re: can somone prove me that miror polished intake ports are bad? (lude98SH)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lude98SH »</TD></TR><TR><TD CLASS="quote">doesnt endyn do fuel atomization bumps or something to help atomize fuel ?? Ive heard of it but never saw anything on it. </TD></TR></TABLE>
yupp