SVX Network Forums Live Chat! SVX or Subaru Links Old Lockers Photo Post How-To Documents Message Archive SVX Shop Search |
IRC users: |
#1
|
||||
|
||||
exhaust port dimensions?
Has anyone measured the exhaust port dimensions at the exhaust manifold mounting surface? Are the ports round, square, oval? Size?
__________________
Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#2
|
||||
|
||||
I think Todd may have measured the ports on his SVX's engine. I don't believe the shop manuals have any decent pics in them.
-Bill
__________________
Retired NASA Rocket Scientist Most famous NASA "Child" - OSIRIS-REx delivered samples from asteroid BENNU to Earth in Sept. 2023 Center Network Member #989 '92 Fully caged, 5 speed, waiting for its fully built EG33 '92 "Test Mule", 4:44 Auto, JDM 4:44 Rear Diff with Mech LSD, Tuned headers, Full one-off suspension '92(?) Laguna, 6 spd and other stuff (still at OT's place) My Locker |
#3
|
||||
|
||||
PM SVXfiles. He just did an engine & tranny swap on his son's '96 SVX. The old engine should be sitting around and he might be able to measure the ports and take some pics...
-Chike
__________________
"Wise men talk because they have something to say; fools, because they have to say something." - Plato 2013 Cosmic Blue 5spd Evo X GSR 2006 Galaxy Gray 6MT RX-8 (sold) 2006 Steel Gray WRX TR (sold) 1996 Brilliant Red SVX L (sold) |
#4
|
||||
|
||||
As I remember they were 1.5 ", I'll pull the factory headers, and measure. Tom
|
#5
|
||||
|
||||
1.5" Exhaust port size
Here's the pic I promised. The port is 1-1/2" in diameter. There are more pictures in boxer6's locker. Hope this helps.
BTW, there is also a shot in the locker of the best way to reach the (4) 12mm flywheel to torque converter bolts under the intake manifold after removing the alternator. Tom |
#6
|
||||
|
||||
Thanks Tom. Great pic!
Are the exhaust ports slightly oval shaped or a perfect circle? -Chike
__________________
"Wise men talk because they have something to say; fools, because they have to say something." - Plato 2013 Cosmic Blue 5spd Evo X GSR 2006 Galaxy Gray 6MT RX-8 (sold) 2006 Steel Gray WRX TR (sold) 1996 Brilliant Red SVX L (sold) |
#7
|
||||
|
||||
this is amazing!!!!! I WAS JUST GOING TO POST THIS Question ...........so the internal dimension of the exhaust manifold is 1.5" ........what about the rest of the SVX's exhaust system?
Also ...anyone know how this 1.5" port size compares to other 6-cylinder engines? THANKS!
__________________
Mike - Proud owner of a Pearl 92 SVX LS-L 5MT with 78k miles and climbing 5-Speed Status: DONE! Lambo Door Status: On hold but will be a success 04 WRX 5MT, STi Short Throw Shifter, Group N tranny mounts, AZA Z-2 18x7.5 Rims, slotted/cross drilled rotors, stainless steel lines, 35/20% window tint, ecu bead crush, power mode button; 7" In-dash touch screen LCD, mobile computer, voice recognition, alpine PXA-H701 DSP, 2 JBL amps, focal speakers all around, 5 farad cap, and fiberglassed subs in the trunk. The Mobile Computer Interface - featuring the SVX | My Locker | My Secret Stash |
#8
|
|||
|
|||
Mychailo,
What are you up to now? |
#9
|
||||
|
||||
Thinking about headers. :-))
__________________
Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#10
|
||||
|
||||
With exhaust ports 1.5" in diameter, would an ideal header size be 1.75" or 2" for maximum flow w/o loss of useful backpressure?
-Chike Quote:
__________________
"Wise men talk because they have something to say; fools, because they have to say something." - Plato 2013 Cosmic Blue 5spd Evo X GSR 2006 Galaxy Gray 6MT RX-8 (sold) 2006 Steel Gray WRX TR (sold) 1996 Brilliant Red SVX L (sold) |
#11
|
||||
|
||||
Re: 1.5" Exhaust port size
Quote:
How about intake port dimension?
__________________
Mychailo :: 2006 Silver Mitsubishi Evolution 9, E85, 34 psi peak, 425wtq/505whp DJ :: 1995 Laguna Blue SVX L AWD 5MT (sold) Visit my locker SVX Mods: ND iridium spark plugs, Impreza RS fpr, afr tuned to 13.2:1 using a custom MAF bypass, custom exhaust, WRX 5MT w/ STi RA 1st-4th gear & stock WRX 5th gear, Exedy 13 lb flywheel & Sport Clutch, STi Group N tranny & engine mounts, urethane spacers in rear subframe, rear diff mounts, and pitch stopper, SVX Sport Strut Springs (185f/150r), custom 19 mm rear swaybar, urethane swaybar mounts, Rota Torque 17x8", 225/45-17 Proxes 4 tires, Axxis Deluxe Plus organic brake pads. |
#12
|
||||
|
||||
Not quite so easy Mychailo
The intake ports are strangely shaped.
Pics w/dimensions in my locker. Todd
__________________
Down to none Last edited by wawazat??; 07-09-2004 at 03:03 PM. |
#13
|
||||
|
||||
Quote:
Todd
__________________
Down to none |
#14
|
||||
|
||||
Thanks!
I see what you mean...those intake ports do have an unusual shape to them. -Chike Quote:
__________________
"Wise men talk because they have something to say; fools, because they have to say something." - Plato 2013 Cosmic Blue 5spd Evo X GSR 2006 Galaxy Gray 6MT RX-8 (sold) 2006 Steel Gray WRX TR (sold) 1996 Brilliant Red SVX L (sold) |
|
|