Throttle body size - Honda Prelude Forum
Honda Prelude Forum Honda Prelude Forum Header Right
» Auto Insurance
» Featured Product
Wheel & Tire Center

» Log in
User Name:

Password:

Not a member yet?
Register Now!
Go Back   Honda Prelude Forum > Honda Prelude Discussion > Fifth Gen Prelude Discussion
Register Home Forum Active Topics Photo Gallery Mark Forums Read Auto Escrow Advertise

PreludeOnline.com is the premier Honda Prelude Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Rate Thread Display Modes
Old 04-11-2010, 06:51 PM   #1 (permalink)
Registered User
 
aboone78's Avatar
 
Join Date: Sep 2009
Location: clayton IN
Posts: 598
iTrader: (6)
Feedback Score: 6 reviews
Throttle body size

Hi all.I am planning on getting a skunk2 throttle body and intake manifold.My goal is just to have one bad N/A motor.my question is what size TB should i get that will be good for my goal since bigger isnt always better depending on what you are trying to accomplish.the IM inlet is 64mm in diameter so i was thinking anywhere from 64 to 68 and i can port the IM to match.any input is helpful.Thanks again.
aboone78 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 04-14-2010, 05:03 PM   #2 (permalink)
Registered User
 
dontbuyprelude's Avatar
 
Join Date: Sep 2009
Location: moses lake, WA
Posts: 484
iTrader: (0)
Feedback Score: 0 reviews
70mm?


and you should probably try the na forum
__________________
David
01 SSM SH

93 d15 auto del slo gone and FORGOTTENexcept for a few memories....
dontbuyprelude is offline   Reply With Quote
Old 04-14-2010, 08:10 PM   #3 (permalink)
Super Moderator
 
Kronn 98SH's Avatar
 
Join Date: Mar 2005
Location: Oklahoma City
Posts: 4,306
iTrader: (4)
Feedback Score: 4 reviews
Everything I've read says 70mm is too big for N/A, especially with mild mods. I'd look into 65-68mm.
__________________
1988 Prelude S - victim of an 80mph backflip
1991 Prelude Si - sold
1989 Accord DX - impounded
1998 Prelude SH - totaled on 3/29/12, now being parted out
2006 S2000 (LBP) - purchased 6/16/12
2006 CRF150F - sold
2006 YZ250F - sold
Kronn 98SH is offline   Reply With Quote
Old 04-15-2010, 10:33 AM   #4 (permalink)
Registered User
 
aboone78's Avatar
 
Join Date: Sep 2009
Location: clayton IN
Posts: 598
iTrader: (6)
Feedback Score: 6 reviews
Quote:
Originally Posted by dontbuyprelude View Post
70mm?


and you should probably try the na forum
my bad.i wasnt sure if this should go under 5th gen or N/A.
aboone78 is offline   Reply With Quote
Old 04-15-2010, 10:34 AM   #5 (permalink)
Registered User
 
aboone78's Avatar
 
Join Date: Sep 2009
Location: clayton IN
Posts: 598
iTrader: (6)
Feedback Score: 6 reviews
Quote:
Originally Posted by Kronn 98SH View Post
Everything I've read says 70mm is too big for N/A, especially with mild mods. I'd look into 65-68mm.
thats kinda what i was thinking but wasnt sure.ill try and find more info on what will be better for me.thanks
aboone78 is offline   Reply With Quote
Old 05-03-2010, 11:34 PM   #6 (permalink)
Registered User
 
ole kyle's Avatar
 
Join Date: May 2010
Location: Wilson/Goldsboro NC
Posts: 11
iTrader: (0)
Feedback Score: 0 reviews
i have read a couple different post from ppl that have put a S2000 TB on their preludes. the S2000 TB is a 80mm TB. i am still debating on putting that on my prelude now. i dont see how goin that big could be a problem.
__________________
Ole Kyle_Honda Pro
ole kyle is offline   Reply With Quote
Old 05-04-2010, 12:48 AM   #7 (permalink)
Super Moderator
 
Kronn 98SH's Avatar
 
Join Date: Mar 2005
Location: Oklahoma City
Posts: 4,306
iTrader: (4)
Feedback Score: 4 reviews
Quote:
Originally Posted by ole kyle View Post
i have read a couple different post from ppl that have put a S2000 TB on their preludes. the S2000 TB is a 80mm TB. i am still debating on putting that on my prelude now. i dont see how goin that big could be a problem.
The stock USDM Prelude has a 60mm TB and the S2000 is 62mm.
__________________
1988 Prelude S - victim of an 80mph backflip
1991 Prelude Si - sold
1989 Accord DX - impounded
1998 Prelude SH - totaled on 3/29/12, now being parted out
2006 S2000 (LBP) - purchased 6/16/12
2006 CRF150F - sold
2006 YZ250F - sold
Kronn 98SH is offline   Reply With Quote
Old 05-25-2010, 09:50 AM   #8 (permalink)
Banned
 
Join Date: Feb 2010
Location: IN FRONT OF YOU
Posts: 245
iTrader: (0)
Feedback Score: 0 reviews
On a 4cyl engine only one of the 4 intake runners is demanding air at any time.If you were to compare the diameter of the stock throttle body to the diameter of one of the intake runners, I think you would conclude that the stock throttle body is not restrictive and installing a larger one will not give you a boost in power and will have a negative effect on throttle response. I find under some atmospheric conditions, when accelerating prior to the 4800rpm vtec change over point you can get more acceleration by holding the throttle open only about 4/5 of the way until you cross the vtec change over rpm point.This is because a smaller throttle opening at lower and mid rpms acts to help speed up the air flow resulting in a faster build up of engine torque.The air valve at the input of the air filter element on the stock air intake performs the same function of acting to speed up the air flow at lower and mid rpms by closing off one of the two air input passages at lower engine rpms.When it comes to throttle bodies , bigger is not always better.
__________________
SH DRIVER is offline   Reply With Quote
Old 05-25-2010, 10:00 AM   #9 (permalink)
Registered User
 
aboone78's Avatar
 
Join Date: Sep 2009
Location: clayton IN
Posts: 598
iTrader: (6)
Feedback Score: 6 reviews
^ ya thats why i was asking because i know that bigger isnt always better but i would think surely a slightly bigger TB would help in some gains.nothing huge like a 70mm or something like that but maybe a 64 or so.
aboone78 is offline   Reply With Quote
Old 05-26-2010, 01:05 AM   #10 (permalink)
Registered User
 
dontbuyprelude's Avatar
 
Join Date: Sep 2009
Location: moses lake, WA
Posts: 484
iTrader: (0)
Feedback Score: 0 reviews
Quote:
Originally Posted by SH DRIVER View Post
On a 4cyl engine only one of the 4 intake runners is demanding air at any time.If you were to compare the diameter of the stock throttle body to the diameter of one of the intake runners, I think you would conclude that the stock throttle body is not restrictive and installing a larger one will not give you a boost in power and will have a negative effect on throttle response. I find under some atmospheric conditions, when accelerating prior to the 4800rpm vtec change over point you can get more acceleration by holding the throttle open only about 4/5 of the way until you cross the vtec change over rpm point.This is because a smaller throttle opening at lower and mid rpms acts to help speed up the air flow resulting in a faster build up of engine torque.The air valve at the input of the air filter element on the stock air intake performs the same function of acting to speed up the air flow at lower and mid rpms by closing off one of the two air input passages at lower engine rpms.When it comes to throttle bodies , bigger is not always better.
__________________

except vtec crossover is 5200 rpms. the iabv opens at 4800
__________________
David
01 SSM SH

93 d15 auto del slo gone and FORGOTTENexcept for a few memories....
dontbuyprelude is offline   Reply With Quote
Old 05-26-2010, 06:21 AM   #11 (permalink)
Registered User
 
Join Date: May 2010
Posts: 6
iTrader: (0)
Feedback Score: 0 reviews
Ford Mustang 1999 - 2004 3.8L V6


Type Size Year Part # Price
Ford Throttle Body 65mm 99-00 F65V6-1 $ 289.99
Ford Throttle Body 65mm 01-04 F65V6-2 $ 289.99
Ford Throttle Body 70mm 99-00 F70V6-1 $ 299.99
Ford Throttle Body 70mm 01-04 F70V6-2 $ 299.99


Ford Mustang 1986-1993 5.0L 65mm to 105mm



In the product descriptions below, EGR refers to a 2" EGR spacer with vacuum tubes and water passages. Blank refers to a 2" blank spacer with no EGR provisions or water passages. The throttle body is sold individually or boxed in a kit which includes a 2" EGR or blank spacer. All gaskets included.

Also, Accufab offers a race throttle body which measures 65, 70, 75, 80, 85 or 90mm size at the blade and it opens up to 90mm at the inlet. It requires a fabricated hose or tube from filter or supercharger and it does not have a vacuum provision.

Call our TechLine at 909-930-1751 for assistance in choosing the right throttle body for your application.
========================================
Organic Seo |Christian Seo
cena2020 is offline   Reply With Quote
Old 09-09-2010, 11:48 PM   #12 (permalink)
Registered User
 
Join Date: Sep 2010
Posts: 1
iTrader: (0)
Feedback Score: 0 reviews
is it really effective if i use a throttle to my engine? cause i heard that this throttle body spacers increases and decreases the engine's power. is that really true? just wanna ask for some advise if i should buy this part of a car and to be added in my car to boost up! thanks.

_____________
miyata

Last edited by blue_01; 09-09-2010 at 11:52 PM.
blue_01 is offline   Reply With Quote
Old 09-10-2010, 04:57 AM   #13 (permalink)
Registered User
 
aboone78's Avatar
 
Join Date: Sep 2009
Location: clayton IN
Posts: 598
iTrader: (6)
Feedback Score: 6 reviews
Quote:
Originally Posted by blue_01 View Post
is it really effective if i use a throttle to my engine? cause i heard that this throttle body spacers increases and decreases the engine's power. is that really true? just wanna ask for some advise if i should buy this part of a car and to be added in my car to boost up! thanks.

_____________
miyata
1.Don't revive dead threads
2.Don't ask questions on someone elses thread, start your own
3.Throttle Body spacers don't do SH!T!
aboone78 is offline   Reply With Quote
Old 09-10-2010, 02:50 PM   #14 (permalink)
Registered User
 
CTrees's Avatar
 
Join Date: Aug 2010
Location: Dallas
Posts: 107
iTrader: (4)
Feedback Score: 4 reviews
Quote:
Originally Posted by SH DRIVER View Post
I find under some atmospheric conditions, when accelerating prior to the 4800rpm vtec change over point you can get more acceleration by holding the throttle open only about 4/5 of the way until you cross the vtec change over rpm point.
I've felt that too, thanks for being able to articulate what was going on there. I also get a nice hissing sound from the intake at 4/5 or around there.
__________________
00' NHBP Base | JDM H22A | M2B4 Tranny | Some Bolt Ons |
[FONT="arial"]08' Montego Blue E92 335i | Cobb Stage 1 | AFE DCI | Active Autowerke CP/BOV |
CTrees is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Honda Prelude Forum > Honda Prelude Discussion > Fifth Gen Prelude Discussion


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
What kind/size throttle body do I need?? blue5thgenbb General Prelude Discussion 3 12-16-2008 12:47 PM
Throttle body size question... camarokiller Naturally Aspirated 13 03-20-2007 05:40 PM
Stock Throttle Body Size? MugenTL Fifth Gen Prelude Discussion 6 03-17-2005 08:26 PM
Throttle Body Size awr19 Fifth Gen Prelude Discussion 7 08-26-2003 08:35 PM
throttle body size JDM Lude Fourth Gen Prelude Discussion 5 02-01-2002 09:33 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -6. The time now is 01:20 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1