It does "some", but unless your cutting a LOT of aluminum, the steel you cut in between aluminum cuts will keep the disc clean. Plastic is the biggest killer for us with grinders and the cutoff wheel. It cakes fast, holds the heat, and shatters the discs in no time if you don't keep them clean

Sorry for the thread jack. Now back to the sweet exhaust :)

:idea::idea::idea::idea::idea::idea::idea::idea:


I could have saved myself so much trouble and just replaced my resonator with a lesonator! I just looked it up, the lesonator is able to reduce the dB output of an exhaust by over 50dBs by use of "muff diving"; unlike a muffler, who's sole purpose is "muffling."


I'm almost offended by your post!

bumpety. I put one of these on my car and took 12-14db off over my normal open exhaust (85db at Laguna Seca). Spool suffered noticeably, though.

I'm surprised spool suffered...I saw no ill effects in the performance department on my setup...must be the bends.

EDIT: Looking a log from last week, still making 15psi at 3600RPM in 4th gear.

got before and afters? I'm curious what I've condemned people to.

what did you use for bends? that exhaust looks and sounds sweet

Dude, this is Braineack we're talking about. He just picked 'em up with his bare hands and bent 'em.

The Columbia River bends.

On a more serious note- I don't see any shielding gas. Did you do that with flux-core wire? If so, it looks amazingly good. (If not, it still looks pretty decent.)

Argon.

:brain::brain::brain::brain::brain:

nice one. ha!

Ok, I don't feel quite so inadequate now. I've only ever owned a flux-only rig, and my welds look like someone took a shit on the workpiece, and then had it plated over.

Sidebar: I need a new welder. Gotta figure out a way to run 220v into the garage. Damn apartment living...

Wait... pure argon, for mild steel?

No and I probably never will since the car isn't street legal. This is going from no muffler whatsoever to the monster y8saflow. I noticed a huge difference in transient boost response, coming out of corners where I normally can just roll in and the boost comes up quickly, there was a fairly significant delay (maybe half a second).

I am pretty sure that is the norm. It is what we use for all our welding.

click full size...

http://www.boostedmiata.com/gallery2...1/DSC_0029.JPG


proof we used GAS:

http://www.boostedmiata.com/gallery2...2/DSC_0022.JPG

Huh. I always thought that you were supposed to use of mix of argon and CO2 for steel.

You know, I just went out there and looked, and it is 75% Argon/25% CO2 mix. I am not sure if it has always been that way or not. I suspect that if you asked for Argon, the mix is what you got.

75/25 argon/Co2 mix is what we use, but pure argon is supposed to give a cleaner weld for some reason..... But we are cheap :D

I've tried migging with pure argon in a pinch and it doesn't work. The CO2 is there to bring some heat to the party. i couldn't get any kind of penetration with straight argon.