divided exhaust housing flapper valve.. quick spool down low, big power up top?
12-08-2008, 10:36 PM
#41
1.5 BAR
Join Date: Oct 2006
Posts: 964
Re: divided exhaust housing flapper valve.. quick spool down low, big power up top?
clever
lets the one scroll operaton run better because of the slant instead of it just being blocked off. i still wonder what the clearances were on his setup. might just eyeball it and go from there. can't leak enough to cause a problem
lets the one scroll operaton run better because of the slant instead of it just being blocked off. i still wonder what the clearances were on his setup. might just eyeball it and go from there. can't leak enough to cause a problem
12-08-2008, 11:16 PM
#44
0.5 BAR
Join Date: Sep 2008
Posts: 135
Re: divided exhaust housing flapper valve.. quick spool down low, big power up top?
Only problem is you got to have that extra room to fit it. In our maximas we got plenty of room when turbo is placed over the tranny. Even with a giant turbo
12-09-2008, 03:03 AM
#47
0.0 BAR
Join Date: Jun 2003
Posts: 0
Re: divided exhaust housing flapper valve.. quick spool down low, big power up top?
Originally Posted by jackfrost1031
This reminds me of those variable geometry intake plenums. I bet you could use one of those actuators for it.
12-09-2008, 04:00 AM
#48
0.5 BAR
Join Date: Apr 2005
Posts: 119
Re: divided exhaust housing flapper valve.. quick spool down low, big power up top?
Here is a picture of it on the outside:
http://img185.imageshack.us/img185/2017/img1635gn3.jpg
The inside is almost like ITBs except it switches between 2 sets of runners. 1 long runner set for more torque down low, 1 short runner for more HP up high.
Toyota call is ACIS but I have seen it on several different cars. Daewoo 1.6, Ford modular 32v, and some other ---- I'm sure has it. When vacuum reaches some point the valve opens and whoa-la you have a short runner intake manifold.
Toysrme should recognize this
http://img185.imageshack.us/img185/2017/img1635gn3.jpg
The inside is almost like ITBs except it switches between 2 sets of runners. 1 long runner set for more torque down low, 1 short runner for more HP up high.
Toyota call is ACIS but I have seen it on several different cars. Daewoo 1.6, Ford modular 32v, and some other ---- I'm sure has it. When vacuum reaches some point the valve opens and whoa-la you have a short runner intake manifold.
Toysrme should recognize this
12-09-2008, 01:42 PM
#49
1.0 BAR
Join Date: Nov 2004
Posts: 204
Re: divided exhaust housing flapper valve.. quick spool down low, big power up top?
