FS: $4,500 Casey's 200 20v

[groff]

I'm going through NH on Saturday to pick up some stuff so I could grab it from you to give to him if you'd prefer

[Hank]

That may work, as long as it doesn't end up on the rally car I'll call Casey tonight to coordinate.

[groff]

shhh....

[loxxrider]

I can just see airport security wondering wtf that thing is haha

[WOMBAT]

WOAH a lot has happened since I left haha - thanks Hank! Look forward to seeing this masterpiece!

[amd is the best]

Looks like I'm going to be the only one without one of these masterpieces :(

[WOMBAT]

amd is the best wrote:[/quote]

Looks like I'm going to be the only one without one of these masterpieces :([/quote]

oh its ok, you drive 3 of them :-)

[WOMBAT]

I know the 200 is a big car, but man - I didn't quite get it until I had the exhaust out of the car....

Anyhow, I wrapped up the final welds and took some pictures before putting the exhaust back in to make the hangers. I hope to wrap the hangers up today and get the car back on the ground so that I can start installing my goodies from Marc 8)

I had a PM about exhaust supplies, so I'll add it here. For turbo back, I ordered (3) 180 degree bends with 4" radius of 3" aluminized, 10ft of straight, a flex pipe, O2/EGT bungs, 2 v-band clamp assemblies, magnaflow cat, and ebay crappy muffler that will get changed out sooner rather than later because it's 3" in and dual 2.25" out which completely negates my 3" exhaust.... damn you ebay. Or I just need a cutout. With all those supplies, I only ended up with this left over:



And here's the stove pipe. Left the downpipe on the car since I didn't want to reposition again to make the hangers.




How the tips look


Rumor has it my intake manifold will be here this weekend which would be AMAZING! I'll be able to wrap up the intake plumbing and finalize radiator placement before I have to leave the shop which would be ideal.

[amd is the best]

Kind of odd placement of the flex section in my opinion. I think it should be closer the engine (in front of the cat) but I am only speculating. I just see that when your engine move around in there the exhaust manifold and turbo have to move the ~5' section of exhaust plus cat before anything can allow movement. Just my .02, looks great though and that muffler doesn't look bad nestled up in the bumper either!

[WOMBAT]

amd is the best wrote:[/quote]

Kind of odd placement of the flex section in my opinion. I think it should be closer the engine (in front of the cat) but I am only speculating. I just see that when your engine move around in there the exhaust manifold and turbo have to move the ~5' section of exhaust plus cat before anything can allow movement. Just my .02, looks great though and that muffler doesn't look bad nestled up in the bumper either![/quote]

Yea I've been trying to figure out what to do. The only place it would fit in front of the cat is in the straight part of the down pipe. Thoughts on that?

The exhaust has a hanger on the transmission, so there's not a whole lot of separate movement between the exhaust and the motor up to that point.

[loxxrider]

On my car it was right in front of where you have the cat.

[WOMBAT]

On my car it was right in front of where you have the cat.

so on your down pipe? I really don't have any room forward, and the cat because of its shape doesn't fit further back :(

[loxxrider]

Ya its cuz I have no cat. My downpipe made that 90 right where yours does, then vband into the flex section and the rest of the exhaust.

[WOMBAT]

Alright guys, try this on for size... made a change last night. The flex pipe is now in the downpipe.





All that's left for the exhaust now are EGT and O2 bungs, and I need to plumb in the wastegate. The car is so close to being back on the ground! Just need Bilstein to come through with the new gland nuts.

[Glug]

[WOMBAT]

[loxxrider]

Now that is whats up! Definitely a good stress reliever for the manifold/downpipe if the rest of the exhaust hits something.

[Dr.Strangelove]

The exhaust looks good!

"ebay crappy muffler that will get changed out sooner rather than later because it's 3" in and dual 2.25" out which completely negates my 3" exhaust.... damn you ebay. Or I just need a cutout."

I don't think you need to change your muffler out. 2x2.25" pipes flow more than a single 3".
A=pi(r)^2
A=(pi(1.125)^2)x2=7.95
A=pi(1.5)^2=7.07

[WOMBAT]

Yea I've done that calculation before, but there are additional flow losses due to increased surface area of two 2.25" pipes (and there's jagged piping in that muffler that chokes it to 2 1/8 in some cases). Also, the way they went from a single 3" to the dual out with the perforated tubing and baffling is horrendous and not flow friendly. That's what really grinds my gears. You can see in one of the pics I cut out the top of the muffler to try and rearrange things, but it's just terrible haha

[loxxrider]

That sucks about the muffler. One thing to note is that the losses from increased surface area will be really low (just in case anyone reading this is curious about that).

You can calculate the pressure loss through a pipe based on the following relation:

delta Pressure (head loss) = friction factor * (Length-of-pipe/D-of-pipe)*[(density-of-fluid)*(volume-flow-rate/cross-sectional-area)^2]/2

We can then assume some Volume flow rate. Assume we have 1000 CFM flowing through the engine.

From this, I have done some calculations (for a short section of pipe like you'd have in a muffler) and found that to get the roughly same pressure losses as a 3 in pipe, you need two 2.5 inch pipes. However, the pressure loss difference from a 3 inch pipe vs. two 2.25 inch pipes is something like 7 Pa... which is not much at all. I'm not really sure how this relates to restriction, and thus power losses thru the engine though.

[derracuda]

if you like the sound, leave the muffler, you aren't losing anything noticeable back there.

[groff]

i'm confused why we're still talking about the poop ebay muffler when there is a cat in the system. you're loosing a hp with the muffler, nbd, and 10x that from the cat, its about how it drives not how it dynos.

[WOMBAT]

if it weren't for VT, that cat wouldn't be there.

[groff]

just gotta know the right guys that like beer

[WOMBAT]

just gotta know the right guys that like beer

Very true. Too bad I didn't have enough pipe left over to make a 'test pipe' to throw in post inspection 8)

Eventually...