I chopped my Q-Stealth

[AZRickD]

The little internal spigot thing that attaches to the back/inside of the tip was rattling in the cone (two mini spot welds broke).

In a pique, I decided to tear it down and fix it. Then I said, "Screw it. Let's cut this thing."

I did some rough measurements and decided on cutting 4-inches off the back end using a compound miter saw. For you Euro guys, 4-inches is the same distance as from the left side of the caps lock key and the right side of the F key on your 2006 MacBook Pro 17. That's like about 100 millimeters.

I put it all together, and while I didn't kick it to life, I suspect that a dyno would find a bit more bottom, a tad more top, and about 1db less on a standard sound test.

 

[AZRickD]

Here's what the innards looked like, pre-cut.

Not my photo.

 

[shang]

That looks great!
I cut mine down last year and took about 5" out of it. Plus I cut back the little internal baffle a bit as well. I Was playing with jetting at the same time so I didn't really get a back to back comparison but I think it made a pretty good difference all over. I even ordered new decals for it from FMF.

 

[AZRickD]

I was tempted to go stubbier than 4-inches but I kind of liked the aesthetic of having the cone being set back from the rear mounting tab.

I love science.

 

[byost]

I cut 4.750" off of mine and then re-welded the spark arrestor and baffles back together. I honestly don't think it is any louder than stock and no more spooge!

 

[Capz85]

I might give this a go, I've seen replacement q stealth stickers on eBay

 

[Jakobi]

I chopped mine right back. Fat jetting will still create spooge, but not as bad as stock.

Are you leaving the spark arrestor in place or omitting? I dropped mine. I don't notice it being overly loud.

 

[shang]

I might give this a go, I've seen replacement q stealth stickers on eBay

I ordered my replacement stickers straight from FMF. They are on their site.

 

[AZRickD]

I kept the Turbine core but left the spigot removed.

I took a short spin on it last night. Sounds different. Kinda weird sounding.

 

[Capz85]

I kept the Turbine core but left the spigot removed.

I took a short spin on it last night. Sounds different. Kinda weird sounding.

Good or bad?

 

[AZRickD]

Not bad.

Gone is that mellow sousaphone sound of the large Q-Stealth.

The shorty has something akin to a gargling sound at low RPMs. Then at mid-rev it breaks into what is clearly a euphonium played staccato allegretto. Not enough time in the upper revs to discern the sound, but I think, maybe tenor sax with a little too much spit in the bell.

 

[Capz85]

Haha interesting, how about a YouTube clip

 

[desertgasser300]

Not bad.

Gone is that mellow sousaphone sound of the large Q-Stealth.

The shorty has a something akin to a gargling sound at low RPMs. Then at mid-rev it breaks into a what is clearly a euphonium played staccato allegretto. Not enough time in the upper revs to discern the sound, but I think, maybe tenor sax with a little too much spit in the bell.

God darnit, Mr. Lamarr, you use your tongue prettier than a twenty dollar whore.

 

[desertgasser300]

My cut down q-stealth blew an 85 dB at Sundays race tech inspection.

 

[shang]

My cut down q-stealth blew an 85 dB at Sundays race tech inspection.

How much did you cut off yours? Did you modify the baffle at all?

 

[desertgasser300]

Cut it down all the way to the last bracket, no mods.

 

[AZRickD]

I was at Tech when he blew his 85. Lowest reading of the weekend, btw.

He also took 1st in his class in what is known as Arizona' Toughest (ie, rockiest) race.

No need to modify anything. Just take good measurements and align holes for drilling.