engine and drivetrain Velocity Stacks - should they have filters or not?

[vinntagejoe]

This is for a weber dual 40 side draft set-up (obviously);

 

I've been looking through archives, doing internet research, yadda yadda yadaa - cannot seem to come up with a complete answer on the pro's / con's of "socking the trumpets".  I like the look of the open stacks, not to mention the sound, but combing over what I have gathered, covering the stacks with sock filters will improve the wear and life of the engine, however, cause the webers to be re-tuned and may have a slight adverse effect on hp. 

 

So, I'm asking the FAQ as you guys are as detailed as heck! Thanks in advance.

 

BTW - I saw that Limy Steve installed some mesh covers on his stacks but again, I've read socks are better than mesh - WTF - help.

[Simeon]

Of course it's your car so it's your call but I would always run filters. The difference in HP would be negligible Vs the potential damage to your engine. Sound wise, a few foam filter socks will not make much difference.

[jeffzm]

Great topic. My Ti lux running dual side drafts also with no filters and I am in search of proper filters. Also looking for someone that knows how to dial in dual 40's on a 2 litre in the SoCal area. Thanks

[M3M3]

Of course it's your car so it's your call but I would always run filters. The difference in HP would be negligible Vs the potential damage to your engine. Sound wise, a few foam filter socks will not make much difference.

This. You will not notice any change in sound or power.

[burndog]

The con of not running a screen or filter is sucking in foreign material into the chamber and BOOM! I used to run street drags and once found, before starting, someone had dropped a bolt down into one of my Weber 48IDA's...

[Chamonix72]

Find some stacks like these. I bought them from an Alfa guy on eBay.

That said, most of the time, I run these filters and I take them off for shows.

[TobyB]

If your air's perfectly clean, you don't need a filter.

 

Otherwise, you're shortening the life of the engine.

 

How much? 

 

Depends on the amount of dirt flying around.

 

One good sandstorm will ruin your day, though...

 

I run an OEM paper filter.  The race car uses one from a 944, I think.  It's huge.

And ugly as sin.  I even made the housing yellow to show off how ugly it really is.

 

What I think, what I do...

 

t

[vinntagejoe]

Great topic. My Ti lux running dual side drafts also with no filters and I am in search of proper filters. Also looking for someone that knows how to dial in dual 40's on a 2 litre in the SoCal area. Thanks

Give Matt Rose a call at Ronin Autowerks (Fullerton); real good guys - I know it may be a hike for you, they'll get you in and out.

I've also cruised some of the Alfa boards, good stuff. As for the other brothers who chimed in, this has been some good insight, thanks a bunch!

[Stevenola]

Spuell Motorsports has both short and long angled foam filters to fit over trumpets.  They fit and work great, and I cannot tell that they muffle the intake music at all.

[TobyB]

You mean, Paul Spruell? 

 

http://www.paulspruell.com/

http://www.spruellmotorsport.com/

 

He has gearsets for Alfas that make me drool.  But

even if something like that was made for 2002's,

I couldn't afford it...

 

t

[Stevenola]

Yes, only the short angled ones are listed but he has longer ones also.

 

http://www.spruellmotorsport.com/air-filter-dcoe-weber-set-short-with-angle-degrees-for-clearance-p-2366.html

 

 

You mean, Paul Spruell? 

 

http://www.paulspruell.com/

http://www.spruellmotorsport.com/

 

He has gearsets for Alfas that make me drool.  But

even if something like that was made for 2002's,

I couldn't afford it...

 

t

[jireland2002]

Street cars should run filters.  Foam filters while not elegant work well and don't rob power.  Wire screens just keep out large objects and rob lots of power.

[vinntagejoe]

OMG JIreland posted a blurb; this means unicorns do exist. THANKS JEFF!

Edited September 15, 2015 by vinntagejoe

[zinz]

Yes, only the short angled ones are listed but he has longer ones also.   http://www.spruellmo...nce-p-2366.html

 

This is something I've never asked you, Steve.  These UNI filters from Spruell...do they come with the little black donut, like what Ireland's provide?  I'm speaking of the rubber ring that snugs up to the flare of the velocity stack allowing something for the UNI to clamp onto.  

 

You can see I use the longer, angled UNI filters.  My Solex stacks don't have the flare, so I didn't need that donut, but I'm guessing that most stacks do.

 

 

Ed Z

[Stevenola]

Yes they do, and the little float vent filters which I don't use because they screwed up my AFR

 

 

This is something I've never asked you, Steve.  These UNI filters from Spruell...do they come with the little black donut, like what Ireland's provide?  I'm speaking of the rubber ring that snugs up to the flare of the velocity stack allowing something for the UNI to clamp onto.  

 

You can see I use the longer, angled UNI filters.  My Solex stacks don't have the flare, so I didn't need that donut, but I'm guessing that most stacks do.

 

Ed Z

Edited September 16, 2015 by Stevenola