Interchangeable Port Question

[SlamminBeats]

Quick question: So i want to make an interchangeable port. I'm going to keep the port length the same, so all i'm doing is adding a rectangle which will make my current port smaller, thus yielding a lower tuning. I've never made one of these before and wanted to know if this is ok? All the interchangeable i have seen always have that port length insert. I don't want that, is that ok?

Also, im just going to use T nuts and bolts to hold it in place. Is that the correct way to go about this?

Let me know if i'm correct!

Thanks

[tacomaguy1]

Sounds good, should work fine

[SlamminBeats]

Sounds good, should work fine

thank god, seems so easy, wonder why i've never done this before.

[REVOofRustler]

Check out Snowdrifter's build with his Subie. He just bolted pieces of wood to the inside of his port to make the port area smaller.

Here you go: http://www.stevemeadedesigns.com/board/topic/145655-subaru-forester-crescendo-crossfire-and-dc-power/page__st__40

[SlamminBeats]

nice idea there, only thing is my box isnt easy to access on the top like that, i may consider this thou, good find!

[Noobtastic14]

I've tried it a few times and it just never works as good in practice as it does on paper. Sure you may be tuned lower, but the drastic loss in port area doesn't yield the gains you'd expect. If anything, I would make the port longer outside the box to keep the same volume and port area but lowering tuning.

-Drew

[SlamminBeats]

I've tried it a few times and it just never works as good in practice as it does on paper. Sure you may be tuned lower, but the drastic loss in port area doesn't yield the gains you'd expect. If anything, I would make the port longer outside the box to keep the same volume and port area but lowering tuning.

-Drew

almost like an external?

[Noobtastic14]

yeah- a normal inside port with an external extension to drop tuning I guess. That way the volume and port area remain constant.

-Drew

[SlamminBeats]

yeah- a normal inside port with an external extension to drop tuning I guess. That way the volume and port area remain constant.

-Drew

how do you calculate that into torres? when i just add external length it barely drops tuning, id need like 30 inches external it seems like.

[Noobtastic14]

Sorry man I don't use Torres I don't know what to tell ya.

-Drew