Good intake set-up for quad throttle bodies?

The place for all technical car discussions. If you haven't already, read our Disclaimer first!

Moderator: The Mod Squad

Good intake set-up for quad throttle bodies?

Postby -MATT- » Sat Nov 22, 2008 5:43 pm

Ok so I have the exhaust sorted but now want to focus on an air intake set-up. The Carina has the blacktop 20v but not a whole lot of room in the front to duct cold air from the bumper or grill.
By removing the box around the throttle bodies, putting trumpets on them and having the windscreen edge of the bonnet raised slightly to allow air in will this work well? Or just build a cold air box where the filter is and have some sort of scoop?
Any recommendations would be greatly appreciated! :D

Matt
User avatar
-MATT-
Toyspeed Member
 
Posts: 71
Joined: Sun Jun 26, 2005 10:32 pm
Location: Auckland

Postby Emperor » Sat Nov 22, 2008 6:03 pm

I'd say the scoop + cold box idea.. Has been trialled in Pro 7, although using a RX7, but it's effective..
facebook.com/zeroclearanceswag
User avatar
Emperor
Toyspeed Member
 
Posts: 4815
Joined: Wed May 12, 2004 1:14 am
Location: Hamilton

Postby ChaosAD » Sat Nov 22, 2008 6:06 pm

Search Helmholtz (SP?)

Best to leave the intake mani, trumpets etc as it is and make a standard cold airbox setup
User avatar
ChaosAD
Toyspeed Member
 
Posts: 2212
Joined: Wed Sep 03, 2003 11:40 am
Location: Whangarei

Postby RomanV » Sat Nov 22, 2008 7:51 pm

Doesnt the factory filter suck from inside the front gaurd anyway, AKA cold air?
User avatar
RomanV
Toyspeed Member
 
Posts: 4915
Joined: Wed Aug 13, 2003 12:17 am
Location: West Auckland

Postby rolla_fxgt » Sat Nov 22, 2008 11:59 pm

RomanV wrote:Doesnt the factory filter suck from inside the front gaurd anyway, AKA cold air?


Sort of, it's got a small pipe/connection leading there to a small plastic box thing, resonator?, but the main one is front facing from near the rad

I use the section to the guard connector as a temp (ok its been 3 years, yes I'm slack), intake point to a shielded pod. Eventual plan is to use the under guard as a source of cold air, stainless to cold air box, or shielded pod, then stainless to the intake thing on the throttle bodies. Though mine is a silvertop, but same idea
Ending up with spare parts in assembling things since 1983
User avatar
rolla_fxgt
Toyspeed Member
 
Posts: 1641
Joined: Mon Nov 29, 2004 11:54 pm
Location: Rotorua

Postby Bling » Sun Nov 23, 2008 12:10 am

From factory its set up well, so imo best results will be had from getting cold air to the factory filter air box.

Running just trumpets sounds cool, but sucks the power from lower end and shoves some of it back in around 7000rpm . Overall you end up being slower. As tested by my butt dyno anyway, after running filtered trumpets for a while, reverting back to factory intake gave me much better (again butt dyno) torque lower in the revs.
User avatar
Bling
** Moderator **
 
Posts: 15990
Joined: Mon Dec 22, 2003 9:02 pm
Location: Quake City

Postby NZ_AE86 » Mon Nov 24, 2008 3:28 pm

Turn the engine around and mate it up to a mitsi gearbox.
Current rides;
1985 AE86 Race/Rally Car
1986 Levin GT
User avatar
NZ_AE86
Toyspeed Member
 
Posts: 972
Joined: Thu Jun 03, 2004 6:02 pm
Location: Wellington


Return to Tech Questions

Who is online

Users browsing this forum: No registered users and 10 guests