Headers
Headers
What is everyones recommendations for exhaust headers on Dual ports? I was thinking 2" Mandrel bends back to the Y piece?
"Bianca"
'86 Brumby - Dual Port Heads, 5 Speed Dual Range, Custom Cam, Tuned Weber, Tuned Suspension, 2" Body Lift Kit, LSD, 14" rims, 2.25" Exhaust, Snorkel, Dual Batteries, DVD Player, UHF, VHF, etc. Offically now part of the 350, 000 km Club!
And still pulling like a freight train.
"Claudia"
82 MY Wagon - EA81T, RS Liberty WIAC, 5 Speed Dual Range, Tuned Suspension, 14" Rims 27" Tyres, 2" Body Lift Kit, Apline Head unit, UHF, Roof Console, L Series seats, Soon to have New Paint, snorkel, Dual batteries, etc
'86 Brumby - Dual Port Heads, 5 Speed Dual Range, Custom Cam, Tuned Weber, Tuned Suspension, 2" Body Lift Kit, LSD, 14" rims, 2.25" Exhaust, Snorkel, Dual Batteries, DVD Player, UHF, VHF, etc. Offically now part of the 350, 000 km Club!
And still pulling like a freight train. 
"Claudia"
82 MY Wagon - EA81T, RS Liberty WIAC, 5 Speed Dual Range, Tuned Suspension, 14" Rims 27" Tyres, 2" Body Lift Kit, Apline Head unit, UHF, Roof Console, L Series seats, Soon to have New Paint, snorkel, Dual batteries, etc
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El_Freddo
- Master Member
- Posts: 12626
- Joined: Tue Oct 04, 2005 10:00 am
- Location: Bridgewater Vic
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Hey Matt,
When u say dual port you're meaing two ports from the engine (EA81 EA82) yeah?
Or do you mean dual port as in two ports from each head, such as an EJ.
The other question i have is: What are you trying to achieve with your exhaust?
- grunty note
- just a new exhaust that is going to be pleasant to drive with (quiet)
- better performance
Give us some more information and we may beable to help.
Cheers
Bennie
When u say dual port you're meaing two ports from the engine (EA81 EA82) yeah?
Or do you mean dual port as in two ports from each head, such as an EJ.
The other question i have is: What are you trying to achieve with your exhaust?
- grunty note
- just a new exhaust that is going to be pleasant to drive with (quiet)
- better performance
Give us some more information and we may beable to help.
Cheers
Bennie
Hey
Matts me bro and yeah he means a dual port EA81 running 32/36 weber, lumpy cam, some ridiculous timing, unifilter, snorkle.... He will be able to fill u in with a couple more details. Think he is mainly after bit better performance and a grunty note wouldnt go astray. it already has 2inch from Y-piece back and a sorts muffler.
Cheers
Matts me bro and yeah he means a dual port EA81 running 32/36 weber, lumpy cam, some ridiculous timing, unifilter, snorkle.... He will be able to fill u in with a couple more details. Think he is mainly after bit better performance and a grunty note wouldnt go astray. it already has 2inch from Y-piece back and a sorts muffler.
Cheers
Dl l series wagon
2 inch cat back exhuast, 32/36 weber,
CD player, tacho, polyurethane bushes, spotlight, air horns
2 inch cat back exhuast, 32/36 weber,
CD player, tacho, polyurethane bushes, spotlight, air horns
My little brothers right, i am after performance not noise, however i nice note would be good to! I have 2" from the headers back however i need to replace it as is bent and leaking again, so i thought i would ask the question?
"Bianca"
'86 Brumby - Dual Port Heads, 5 Speed Dual Range, Custom Cam, Tuned Weber, Tuned Suspension, 2" Body Lift Kit, LSD, 14" rims, 2.25" Exhaust, Snorkel, Dual Batteries, DVD Player, UHF, VHF, etc. Offically now part of the 350, 000 km Club! And still pulling like a freight train.
"Claudia"
82 MY Wagon - EA81T, RS Liberty WIAC, 5 Speed Dual Range, Tuned Suspension, 14" Rims 27" Tyres, 2" Body Lift Kit, Apline Head unit, UHF, Roof Console, L Series seats, Soon to have New Paint, snorkel, Dual batteries, etc
'86 Brumby - Dual Port Heads, 5 Speed Dual Range, Custom Cam, Tuned Weber, Tuned Suspension, 2" Body Lift Kit, LSD, 14" rims, 2.25" Exhaust, Snorkel, Dual Batteries, DVD Player, UHF, VHF, etc. Offically now part of the 350, 000 km Club!
And still pulling like a freight train. "Claudia"
82 MY Wagon - EA81T, RS Liberty WIAC, 5 Speed Dual Range, Tuned Suspension, 14" Rims 27" Tyres, 2" Body Lift Kit, Apline Head unit, UHF, Roof Console, L Series seats, Soon to have New Paint, snorkel, Dual batteries, etc
I would even use a 75mm - 50mm reducer right at the manifold, the oval shape of the ports need quite a diametre to get around them.
2 inch is ample for the rest, try to replicate the Y shape...uneven runners (ala factory) seem to give more torque.
Even runners allow faster rev up and flow, I ran even ones.
Let it run I say, big numbers have been made with big revs.
The aviation potential of '81s is astounding, but they must breathe.
Have fun....Matt
2 inch is ample for the rest, try to replicate the Y shape...uneven runners (ala factory) seem to give more torque.
Even runners allow faster rev up and flow, I ran even ones.
Let it run I say, big numbers have been made with big revs.
The aviation potential of '81s is astounding, but they must breathe.
Have fun....Matt
1989 Subaru WonderBrumby II
EJ22 Dual range AWD lifted, widened and much happier now thanks very much.
1991 L Series wagon, white and perfectly normal apart from the ticking, no I think that is normal.
Jet boat..webbered EA81 with a hybrid tin dish welded and glued to it.
EJ22 Dual range AWD lifted, widened and much happier now thanks very much.
1991 L Series wagon, white and perfectly normal apart from the ticking, no I think that is normal.
Jet boat..webbered EA81 with a hybrid tin dish welded and glued to it.