Who's Ported Their TB?
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On The Tree
Joined: Nov 2001
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From: Delaware, OH
Who's Ported Their TB? Who's ported their throttle body and/or is there a good write up on it somewhere? How hard is it and what do I have to do? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
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Joined: Aug 2002
Posts: 4,055
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From: Hartsdale, NY
Re: Who's Ported Their TB? The most effective mod to the throttle body is to cut down the throttle stop housing so the butterfly opens 100% - stock factory units only open about 90%. This really improved my WOT power.
You can sand down the venturi to remove the ridge but it does not give much power....
...my advice is to not spend the $$ for a professionally ported unit...
I assume you have also by-passed the antifreeze line that feeds hot liquid that heats the incoming air charge (really a super dumb factory design that robs power).
You can sand down the venturi to remove the ridge but it does not give much power....
...my advice is to not spend the $$ for a professionally ported unit...
I assume you have also by-passed the antifreeze line that feeds hot liquid that heats the incoming air charge (really a super dumb factory design that robs power).
On The Tree
Joined: Aug 2002
Posts: 187
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From: Louisville, KY
Re: Who's Ported Their TB? They were just thinking of safety for winter... but do you know where or what parts you can use for the bypass other than the kit? Low budget to home depot? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> thanks guys
Re: Who's Ported Their TB? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by robertbartsch:
<strong>The most effective mod to the throttle body is to cut down the throttle stop housing so the butterfly opens 100% - stock factory units only open about 90%. This really improved my WOT power.
You can sand down the venturi to remove the ridge but it does not give much power....
...my advice is to not spend the $$ for a professionally ported unit...
I assume you have also by-passed the antifreeze line that feeds hot liquid that heats the incoming air charge (really a super dumb factory design that robs power).</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That's really interesting.........
First the throttle stop really helps airflow very little. It tricks the computer more than it helps airflow.
Second, sanding down the ridge actually picks up more flow than the throttle stop. Alot more.
Third, No comment. Once you have no seal from the throttle plate see how well it idles. It's not rocket science but it's the little things that count.
Forth, the coolant bypass is the least effective thing going on with the throttle body mods. If you understand airflow you will understand that the TB will cool the ait charge coming in do to air flow pricipals. That one time you throttle plate gets frozen shut in white plains is the day you'll think it's a good idea.
Not to be a *****, I don't mean to do that. Take the advice from someone who does it, tests it, and flows throttle bodies. Or don't
Bret
<small>[ September 24, 2002, 08:59 PM: Message edited by: SStrokerAce ]</small>
<strong>The most effective mod to the throttle body is to cut down the throttle stop housing so the butterfly opens 100% - stock factory units only open about 90%. This really improved my WOT power.
You can sand down the venturi to remove the ridge but it does not give much power....
...my advice is to not spend the $$ for a professionally ported unit...
I assume you have also by-passed the antifreeze line that feeds hot liquid that heats the incoming air charge (really a super dumb factory design that robs power).</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That's really interesting.........
First the throttle stop really helps airflow very little. It tricks the computer more than it helps airflow.
Second, sanding down the ridge actually picks up more flow than the throttle stop. Alot more.
Third, No comment. Once you have no seal from the throttle plate see how well it idles. It's not rocket science but it's the little things that count.
Forth, the coolant bypass is the least effective thing going on with the throttle body mods. If you understand airflow you will understand that the TB will cool the ait charge coming in do to air flow pricipals. That one time you throttle plate gets frozen shut in white plains is the day you'll think it's a good idea.
Not to be a *****, I don't mean to do that. Take the advice from someone who does it, tests it, and flows throttle bodies. Or don't
Bret
<small>[ September 24, 2002, 08:59 PM: Message edited by: SStrokerAce ]</small>
