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I'm sure this question has been asked before, my appologies if so
My brother has just bought a 93 1.6 feroza, on the way home from getting it, the exhaust maniflold gasket started to leak.
He is keen to fit extractors for a bit of extra go and a better exhaust note, he also plans on fitting a 2'' exhaust.
So what do you guy's think of extractors on feroza's? are they worth the money?
Also where is the best place to get them from, and roughly how much do you think they will cost??
I had wanted a set after I found lots of cracks in the stock manifold but after pricing them up at $300+ supply only they got put waaaay-down the to-do list.
Then I picked up a cheap set off here secondhand - bundled with a pod filter (lots of onroad driving for me) they added a fair bit of power and sound great. Mine is an 89 so I need to hunt up the later "black box" for low-mid torque increase - so if anyone has one spare, I'm buyin!
Power gain is minimal... couldn't measure on the chassis dyno with any certainy but around 1.5kW.... on a stock engine. Greater gain on a HD-EG - around 4kW but its much "peakier", which means its not a clear cut winner. Sounds better though
Standard manifolds have a habit of cracking badly so compared with a factory replacement ( if you can even get.... ) its a real option.
Black boxes help - not really a power thing but add to the mid range torque so worth having.
Remember nothing you do simply to a 1.6 engine is going to make amazing differences.... short of jacking up the radiator cap.............
( usual disclaimers )
It seemed like a much better idea when I started it than it does now.
The gain in driveability is well worth the time/ money fitting them (forget about peak power gains!)
I'd leave the remainder of the exhast stock too- unless you like revving it hard??? Mine was best for driveability set up like that, it lost low rev torque after I did the rear section in 2".
PS: use the search function and check the FAQ thread - there is a LOT of info on extractors/ headers on here.
murcod wrote:The gain in driveability is well worth the time/ money fitting them (forget about peak power gains!)
I'd leave the remainder of the exhast stock too- unless you like revving it hard??? Mine was best for driveability set up like that, it lost low rev torque after I did the rear section in 2".
PS: use the search function and check the FAQ thread - there is a LOT of info on extractors/ headers on here.
So true Murcod. I have 2" on mine and driven a stock exhaust system and noticed more torque in the stock system
No, the black box I am referring to is on top of the engine and part of the intake tubing, like an external plenum chamber, and was fitted to mid/late Ferozas - mine is an early one, so I missed out.
Here is a engine fitted with:
And without:
I will take some videos hopefully tomorrow of my Feroza at idle and at speed, some highway speed passes etc.
Extractors were probably the best thing I did on my old Ferwoaza. They were the MRT jobbie and matched with the rampod air filter. They sounded awesome (god I hated that whistle), gave it a heap more punch as well. If you've got the dosh, just do it, however if I had my time again, I wouldn't go the rampod air filter, I'd go a custom snorkle instead.
I'm 99% sure the air filter getting dirt and crap and mud and shit in it was the cause of my engine failure after 200k's. And that was a $4500 rebuild! Got rid of it 2 months later when the gearbox went..
