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focus airbox , just to clarify.........

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focus airbox , just to clarify.........

Postby bigmatt-s2rst » Wed Dec 21, 2011 11:51 am

hi all, im going to do the airbox mod on my van
ive searched and theres so many posts its a bit misleading
am i right with the following
1999- 2004 airbox
Image
coupled with this "snorkel"
Image

my main question is
does the snorkel come on all focus models? or just the 170?

hope someone can clear this up then i can get done the scrapyard

cheers
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Re: focus airbox , just to clarify.........

Postby gt_addict » Wed Dec 21, 2011 11:53 am

The st170 one will be a different shape hole in the box and has a wider opening on the snorkel. If you find an st170 then get the whole thing as the snorkel from the st will not fit the airbox from a different model focus.
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Re: focus airbox , just to clarify.........

Postby bigmatt-s2rst » Wed Dec 21, 2011 12:31 pm

so as long as i get the parts from the same car it will fit?

cheers for that mate
:D
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Re: focus airbox , just to clarify.........

Postby Altransit » Wed Dec 21, 2011 1:26 pm

All of the early Foci had this airbox and intake 8) :D

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Re: focus airbox , just to clarify.........

Postby blue estate » Wed Dec 21, 2011 1:46 pm

As long as it's from a 1998 R reg to 2005 05 reg mk1/1.5 focus (1.8/2.0l pet 1.8 diesel either) it will be the same
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Re: focus airbox , just to clarify.........

Postby lightning » Thu Dec 22, 2011 9:38 am

What does fitting a Focus airbox achieve, better performance?

I'm guessing it's only needed if the van has other performance modifications that require more airflow into the engine?
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Re: focus airbox , just to clarify.........

Postby g-man » Thu Dec 22, 2011 10:59 am

not really.........better to have cooler air going to the turbo
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Re: focus airbox , just to clarify.........

Postby gt_addict » Thu Dec 22, 2011 11:33 am

It wont really increase power but it will make it a bit more responsive compared to the swan neck one. the swan neck actually goes 3/4 of the way inside the standard airbox so is very restrictive.
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Re: focus airbox , just to clarify.........

Postby Mike » Thu Dec 22, 2011 12:17 pm

lightning wrote:What does fitting a Focus airbox achieve, better performance?

I'm guessing it's only needed if the van has other performance modifications that require more airflow into the engine?


The gains from the airbox are very small, the cold air effect is also very slight (especially in the winter), the inlet pipe makes a small difference too, but probably the main thing that makes a difference in having a nice clean air filter in place.

On a non turbo vehicle the gains are much greater, but when you have an intercooler you reduce much of the cold air gain. If someone was to measure the intake temp before and after this mod they'd see it for themselves.
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Re: focus airbox , just to clarify.........

Postby L200Lee » Thu Dec 22, 2011 8:10 pm

I have a set of spark plugs and rallye ignition leads from a 1976 datsun, when fitted will these make an improvement?
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Re: focus airbox , just to clarify.........

Postby Honey monster » Thu Dec 22, 2011 8:19 pm

L200Lee wrote:I have a set of spark plugs and rallye ignition leads from a 1976 datsun, when fitted will these make an improvement?


NO, The pre 1976 datsun is not compatible, Im not 100% sure but im 99.9% sure you need the ignition leads off the Datsun 120Y to run with the connect set up.And only a mad man would think of fitting them off a 240z, All that power would rip your little van to peaces.
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Re: focus airbox , just to clarify.........

Postby L200Lee » Thu Dec 22, 2011 8:27 pm

:D phew! Thanks for the info HM! Could have saved me a van!
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