DIY sewer sub. 6" of DIY powah!

[Lazzer408]

Where in the original post did you say anything about these things? Oh, that's right, you didn't. Drill, saw, PVC pipe, enjoy. That's all I see.

I did all the hard work already that's why there's no info about it. I'm not designing this for any reason other then to give out ideas that work. I never claimed it was acoustically perfect but is sure as hell isn't a paint can.

 

[Lazzer408]

No they haven't. You're SOL there, tho I bet you could come up with something. . You positive it's not a simple crossover issue?

And what's this about an SVX? Still have the MX3 and 5's?

I sold the 3 last year and bought a '92 Subaru SVX. I took a liking to it but man is that car a brick. I'd love to stick that H6 drivetrain in an Impreza though... then boost it.

I still have the 5. Want to buy it?

 

[Wile E]

I sold the 3 last year and bought a '92 Subaru SVX. I took a liking to it but man is that car a brick. I'd love to stick that H6 drivetrain in an Impreza though... then boost it.

I still have the 5. Want to buy it?

A roadster makes a terrible car for someone with 3 kids. lol. I'll pass. What approximate whp you up to in it, and still sporting the AEM EMS?

How do you like the SVX. They always intrigued me, but don't really know much about their drivetrain or potential.

 

[Lazzer408]

A roadster makes a terrible car for someone with 3 kids. lol. I'll pass. What approximate whp you up to in it, and still sporting the AEM EMS?

How do you like the SVX. They always intrigued me, but don't really know much about their drivetrain or potential.

They are 230hp stock and no race winner but it'll get up and go. The AWD is great in the snow. It's comfortable, quiet, smooth, and turns alot of heads. They are known for transmission problems but that's solved with an aftermarket trans cooler. The engine itself doesn't have any bugs that I know of. Seems like the MAF is a common part to fail because both of them did on the 2 SVXs I had. I fixed one. It just had cold solder joints. The other one I sold before I tried to fix it. All in all that car was ahead of it's time. Projection headlights, climate control, ABS standard, heated mirrors, sequential injection and COP sequential ignition, variable intake manifold, dual 60mm(?) throttle bodies, 108% volumetric efficiency if I remember right, 10:1cr, 3.3L which is the same bore and stroke as the 2.2 Impreza engine. It'll even bolt to the trans.
The most unfortunate thing about the engine is it's open deck and the cylinder walls are not very strong. 10:1cr doesn't help but people have put 6psi on it. Sleeve the block and grab some low cr pistons and h-beams and your good for 1000hp. That's what some guy is doing in a dunebuggy with that engine.

Check out the crankshaft. lol 7 mains.

EDIT - oh btw... About 300rwhp on the MX5. -shhhhh-

 

[Wile E]

Many of the EJ blocks are open deck as well. That's not really a huge deal most of the time. I bet just rods and pistons would allow a halfway decent amount of HP before truly having to worry about the sleeve failing or walking.

And 7 mains?!? Holy bejesus. lol.

 

[Lazzer408]

Many of the EJ blocks are open deck as well. That's not really a huge deal most of the time. I bet just rods and pistons would allow a halfway decent amount of HP before truly having to worry about the sleeve failing or walking.

And 7 mains?!? Holy bejesus. lol.

Oh yeh. Toss in some stock turbo rods and pistons and you can throw some boost at it. Probably get 400 out of it with a good tune.
If I can find a nice Impreza roller I want to do a swap. It'll probably be OBD2 but I'll grab whatever 6 cylinder turbo ECU I can find and wire it in. The hardest part is the crank and cam sensors. I'm sure I'll have to re-tooth it to w/e ECU I use.

 

[Wile E]

Oh yeh. Toss in some stock turbo rods and pistons and you can throw some boost at it. Probably get 400 out of it with a good tune.
If I can find a nice Impreza roller I want to do a swap. It'll probably be OBD2 but I'll grab whatever 6 cylinder turbo ECU I can find and wire it in. The hardest part is the crank and cam sensors. I'm sure I'll have to re-tooth it to w/e ECU I use.

The forester had a 6 banger turbo option at one point in time, iirc.

But, even if it is OBDII, you don't absolutely need a turbo 6 ecu. A standard 6 cyl ecu would serve. Use it for all emissions and other mundane tasks, and use a parallel ecu for the real tuning.

 

[sneekypeet]

On topic please.

I know its auto audio related, but lets not get too off line

 

[Wile E]

On topic please.

I know its auto audio related, but lets not get too off line

You sadden me Sneeky.

And ok, fair enough. We did get a bit far off track there. lol.

To bring it back into line: Laz, how do you think this box design would react with some polyfill?

 

[department76]

polyfill in a vented box? o plz.

this thread digressed from basic cognitive decision making to commatose.

 

[Wile E]

polyfill in a vented box? o plz.

this thread digressed from basic cognitive decision making to commatose.

That's why I asked how it would effect it. Never tried poly in a vented enclosure. Curious as to what it would do. The conversation can do without your little personal jabs.

 

[Lazzer408]

The poly worked ok. The inside wall has 1/2" poly around it.

Pollfill is used on the walls of a ported enclosure to dampen the reflected or standing waves inside that can reflect against the backside of the driver or out the port. Polyfill can also be used in acoustic suspension (sealed) enclosures to slow the wave inside the enclosure. The whole box is stuffed to do this. It has the effect of making a smaller enclosure perform as if it were larger then it is. This is why it's often found in small bookshelf speakers.

A standard 6 cyl ecu would serve. Use it for all emissions and other mundane tasks, and use a parallel ecu for the real tuning.

I agree. The FIC piggy in the MX3 did a great job of handling boost tuning. Anything below 0psi was handled by the stock ECU. I just figured for a cheap/easy solution that can handle mild boost. You know what I miss about that car the most? The audio!! The 2 Cadence 10s in that car sounded SO good SO smooth and SO low! I miss it.