alfasz.yourbb.nl

Harry_sz · Site Admin Joined: 20 Mar 2008 Posts: 276

This is a great item and unique for the Alfa SZ.
Base is an Alfa 75 airfilter box, but they cut off a corner to make it fit, then beat it a bit with a hammer or something and welded in a small plate to close it up again.
Real piece of art. Wink

Are they all like this, or are later cars (mine is number 42) better??

I am getting mine blasted and painted, because it is not pretty anymore and starts to get some small rust-spots.

philip · Joined: 25 Jun 2008 Posts: 115 Location: United Kingdom

Hi harry, that's interesting... Oh the charms of a coach-built limited edition Alfa with craftsman lovingly building your car with 100's of years of passion... and a hammer Very Happy

My car (a later model, no. 696) doesn't have this welded bit, it's a one piece design so i guess its one of a number of things they 'improved' as they built them.

wrinx · Joined: 24 Dec 2009 Posts: 243 Location: United Kingdom

I've heard about this bit of "modification" before so presumed mine was the same....but it doesn't look as bad as yours Harry Laughing

Will check and report back if it's the same...but as your car is such an early one I guess not, my SZ is 353 by the way.

wrinx

frankalfa · Joined: 05 Jun 2010 Posts: 78 Location: holland.

The upper part of my airbox looks similar to yours Harry.(*044)

Bets regards,fRank
_________________
SZ No. 044

wrinx · Joined: 24 Dec 2009 Posts: 243 Location: United Kingdom

Had a look today, mine has a little bit of marking near the clip, about a third of the way along...but will have to remove the lid to be sure...but I was more interested in taking it for a drive Cool

wrinx

wrinx · Joined: 24 Dec 2009 Posts: 243 Location: United Kingdom

Yes, definitely welded in the same place...just finished with less marks afterwards Laughing

wrinx

Harry_sz · Site Admin Joined: 20 Mar 2008 Posts: 276

Maybe they got better with grinding and welding after a couple of hundred of these da*n boxes!! Smile

wrinx · Joined: 24 Dec 2009 Posts: 243 Location: United Kingdom

Must be faultless after a thousand or so Laughing

wrinx

Harry_sz · Site Admin Joined: 20 Mar 2008 Posts: 276

I got it back now and it looks perfect again.
But Marc said that some tuners will remove that black box that sits in the airfilterhousing and connects to the air measurement thing (how do you call that in English? Smile

). The tuners say this will add maybe 5bhp.
Why is this box in there?? Is it needed (for what?) or can I just remove it safely and maybe even get some extra hp??

The black box in picture 2, so this one :

Harry_sz · Site Admin Joined: 20 Mar 2008 Posts: 276

Here the result :

Anonymous · Guest

Man Muß unter halb der Öffung mit Silicon zu machen das er keine Warmluft an nimmt

robinsz109 · Posted: Thu Mar 03, 2011 19:46 Post subject: black restrictor

Harry, the black box is a restrictor.
When you remove it the resistance within the airflow is reduced and this should increase breathing of the air intake at high need as with high revs.

I've heard talks of 3 to 5 bhp increases but I have never seen dyno outputs or something. I understand that some British tuners have sold this conversion for serious money in the beginning of the nineties.

Robin

zag · Joined: 21 Apr 2010 Posts: 53

wrinx · Joined: 24 Dec 2009 Posts: 243 Location: United Kingdom

Wow, impressive gains...about 10% Cool

wrinx

wrinx · Joined: 24 Dec 2009 Posts: 243 Location: United Kingdom