ZUKIWORLD Online | Suzuki 4x4 Editorial and Forum
ZUKIWORLD Discussion Forum => Suzuki 4x4 Forum => Topic started by: ZukkinMad on December 06, 2003, 06:50:38 AM
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Guys & Gals your opinion is needed.
I'm planning on buying a header for my 1.6 16v sidekick, but cant decide on if to get the Calmini or Hawk header.
Which would u guys recommend?
ZukkinMad
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I've got the Calmini on mine and have had nothing but raves from those who've seen/heard it. It has definitely given me a power increase as well as broadening the power band. Also, it revs much freer now.
Note: I installed the complete Calmini exhaust with high flow cat and Calmini air filter.
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I ALSO HOPE TO DO THIS MOD. IN THE FUTURE...LOOKING AROUND HERE AND ELSEWHERE...SEEMS THE CALMINI HEADER IS MORE WIDELY USED ???  .....ANY THORLEY HEADER USERS OUT THERE  ??? IF SO HAVE YOU USED CALMINI'S IN THE PAST  ???  ANY COMPARATIVE INFO YOU COULD GIVE  :-/  THANKS MATTY D.  8)
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WAS LOOKING AT HAWKS SIGHT , AND THEY SELL CALMINI'S HEADER.....ARE YOU  REFERRING TO THORLEY HEADERS ON RRO'S WEBSIGHT ???  CAUSE THATS WHAT I WAS THINKING ABOUT NOT HAWKS ...... :-/
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I just installed the Hawk Header,and it is great. The nice thing about the hawk header is the O2 sensor is on the collector where all four pipes come to gether, where as on the Calmini and Doug Thorley it only read from two pipes. Which mkight give a false reading and may make it run a little off the norm. The Hawk also dosent require a gasket where it connects to the rest of your exaust. It has a ball swiviel flange. I installed the Hawk Header, Catko Cat, Magnaflo Hi-flow Muffler and 2" pipe all the way around. It gained noticable difference. Hope that helps. There is also an article about the Hawk header on this website from last month i think.
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You got a point with the O2 reading all four
cylinders, in the times I have taken the header
off for the Turbo install, I notice the center two
exhaust ports are dark with a carbon color, and
the outside two ports are grey insead :-/ I think
it could have something to do with the boost but
I dunno, what I do know is that running lean on a
turbo motor is a no-no.
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Overall I doubt if it makes any difference. I don't think the ECU can differentiate between cylinders. It looks at the reading and if its out it makes a correction on the next squirt. On multipoint the injectors are usually fired in pairs of two on a 4 cyl. Theoretically measuring on one pipe should be adequate but measuring on two or more averages out the reading if they're a little out of tune. Wildgoody do the different colours correspond with the two banks? maybe you have a problem with one bank.
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No it couldn't be, I still have the TBI
injection :'( , I have not had time
to rework the manifold for MPI yet. >:(
Might be the air flow under boost blows
the fuel into the center two cylinders, and
leans out the outside two :-/
Darrin
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Oh also with the Hawk Header they offer three different levels of ceramic coatings
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I just installed the Hawk Header,and it is great. The nice thing about the hawk header is the O2 sensor is on the collector where all four pipes come to gether, where as on the Calmini and Doug Thorley it only read from two pipes. Which mkight give a false reading and may make it run a little off the norm.
The Calmini header has the O2 sensor in the collector as well. Only the Thorley and early-early Calmini Headers have the sensor up in the first tri-y thus reading only two pipes instead of all 4.
-Eric
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No it couldn't be, I still have the TBI
injection  :'(  , I have not had time
to rework the manifold for MPI yet. >:(
Might be the air flow under boost blows
the fuel into the center two cylinders, and
leans out the outside two  :-/
Darrin
With a single plane intake the cylinders farther from the intake throat get less fuel. You just notice it more due to the turbo. If all the runners were equal length, the cylinders would run more closely matched.