stacks. are they important?

[jay70]

So I'm at the track and one of my stacks just fell off, she's right for the night yeah?

[Jimmee1990]

Stacks as in trumpets for the itbs? You'll lose a bit of power from not having one, and nothing to attach a filter to. Otherwise you'll be right.

[jay70]

Yeah trumpet. Wasn't sure if it might mess with something. Cheers

[Matt]

Where did you buy them from they shouldn't just "fall" off

[Jacobxxx]

Yeah im not real sure how one falls off

[jay70]

Maybe I'm just that good. Lol but yeah I was wondering that as well, the actual flange is still on there but the rest somehow just fell off

[jay70]

I think they are Sam q. ask will

[Skylar]

Yeah, don't go off track/try and get some sorta filter on there. If anything that cylinder will run richer because the air is harder to get into that cylinder.

[Delazy]

Lol, could be the old press fit Sam Q stacks..he welds them now for that exact reason

[Gunner]

the welds can still crack, as were seen on mine, no biggy though< still the best stacks on the market I have found.

[jay70]

Yeah the rest are ok haha, I'll just grab another. I was doing some pretty gnarly hoops tho so that's probs why

[Gunner]

I think its just the resonance they are subjected to, in a fwd you can literally hear the vibrations as the resonance bounces off it, pretty cool really.

[Sam-Q]

crap that doesn't sound good, well if you have not already send me an email and I will have another out to you.

What size and type do you have now?

[Sam-Q]

the welds can still crack, as were seen on mine, no biggy though< still the best stacks on the market I have found.

that's still not good enough, let me know and I will do something about it

[Gunner]

I think they are gone now sam, Matt could confirm that. In my opinion, it is solely due to the resonance/vibrations caused via intake pulses, which I don't think any could anticipate to be so strong. I think if it were 4 tacks each it wouldn't be an issue.

P.S my offroad excursions and curb hopping at driftfest 01 may of been a contributing factor lol.

[Matt]

Or the 2 busted engine mounts on that car. Car long gone now

[Gunner]

yeah those too hahahaha, well lets be honest, if they didn't break in my possession, they probably will never break.

[Sam-Q]

I as of recently have changed the way these are put together. Here is a pic pre-machined on the unusual fixture I had to make for the task at hand:

http://www.ae86drivingclub.com.au/dcimages/2/5/2/510417.jpg

Made from a former traffic light pole. I have the right man for testing these too, the only guy who somehow managed to tear a flange in half. I figure that being welded on the top and bottom it will also prevent any rocking from the engine which is likely what is causing the fatigue in the first place.