3.0 Build Project: "Green Machine"

[MC#4]

Damn I wish I could afford stainless! Nope its gonna be all 16ga. Mild steel. I've crunched the numbers and I'm lookin at about $400 in materials. This ---- adds up real quick. That's with me doing 99% of the work myself. Our shop has a damn nice millermatic MIG setup I'll be using. TIG is unheard of around this po'dunk little town. I considered stainless until I looked at the prices, about 3x per foot + I'd need stainless wire and different shielding gas.

Any thoughts on necking down the tailpipe at the back of the car and reusing the factory muffler? (yes I know Im cheap!) I want this to be a drivable sleeper and I think that will give it to me. V6's sound like --- most of the time anyway to me.

[bond_bbs]

is it all stainless steel? nothing like the sexi look of tig weld on SS headers.



exactly. thats all my magnaflow is anyways and i have it sitting in place of the cat. thinking of a second one in the muffler location. hard to shell out $100 for a second straight muffler. the new dyno max ones look nice though (stay closed and then wide open when you go.. well wide open)

I love the look of custom built headers that have been cleaned and chromed. Also - the chrome does a very good job of showing the heat dispersion very well.


As for the open/close mufflers, I think I would prefer to have a dump solenoid. Run your exhaust normally, and get one of those 3" exhaust dump valves, get an old electric door lock solenoid on, and wire a microswitch triggered at WOT off the throttlebody or an output trigger from MS. Maybe wire in a toggle switch override so you can select Forced Open / System Controlled / Forced Closed.

[MC#4]

I like the idea of an exhaust cutout alot but this car has to be PA inspectable and they aren't allowed here . I also decided to put a cat shell in there as well. Doesn't need to function but it has to be there for visual emissions check. Im actually making my own cat shell right now.

[turbovanman²]

I ordered almost everything I'll need for my headers and exhaust today. 1.5" primaries, Then 2 1/8" into a 3" collector and then 3" all the way back. Materials cost more than I thought but I guess I don't have much of a choice since we have no aftermarket support. Oh well at least Ill have what I want.

Did you check out Ed for headers? He makes them but they might not be what you want or too much money.

I like the idea of an exhaust cutout alot but this car has to be PA inspectable and they aren't allowed here . I also decided to put a cat shell in there as well. Doesn't need to function but it has to be there for visual emissions check. Im actually making my own cat shell right now.

I see no issues with a stock muffler, thinking the same thing, lol, but what about a test pipe you can take out after inspections, and the new test pipe has the cut out?

---------- Post added at 01:41 PM ---------- Previous post was at 01:40 PM ----------

like ed said, we are talking over 300tq at less than 2000rpms.

i guess my main reason for bringing that up was to show that he only spun a bearing due to ill choices for this turbo and that the 3.0 dosnt normal spin a bearing just because its boosted.

I don't believe it, many engines out there build stupid torque above idle with no issues, I think he had bad luck.

[MC#4]

Did you check out Ed for headers? He makes them but they might not be what you want or too much money.



I see no issues with a stock muffler, thinking the same thing, lol, but what about a test pipe you can take out after inspections, and the new test pipe has the cut out?

---------- Post added at 01:41 PM ---------- Previous post was at 01:40 PM ----------

I've been using ed's site as a reference. When It comes right down to it, I actually want to build these myself, I just like the sense of accomplishment sometimes.

I really like your idea about the "test pipe"! That is definately under serious consideration. Thanks.

[turbovanman²]

Gotcha, sometimes you gotta make it yourself,

[Sundance 6g72]

good idea on the test pipe with the cutout

make an exuast where the cat is easily bolted on and off and swappable for a pipe with the cutout. Maybe run a 3inch downpipe to the cat and the have the test pipe made out of 3inch

only issue on the cutout is that i hear they take a few seconds to open up.. so if its wired to the throttle it might lag a little

dynomax has a new line of mufflers that are supposed to be realllllly quiete until you go wide open. they have a valve in them or something

[turbovanman²]

good idea on the test pipe with the cutout

make an exuast where the cat is easily bolted on and off and swappable for a pipe with the cutout. Maybe run a 3inch downpipe to the cat and the have the test pipe made out of 3inch

only issue on the cutout is that i hear they take a few seconds to open up.. so if its wired to the throttle it might lag a little

dynomax has a new line of mufflers that are supposed to be realllllly quiete until you go wide open. they have a valve in them or something

If your racing, then it taking a few secs doesn't matter and if your street racing, it will draw attention. I manually open and close mine, its fun, lol.

I tried their new muffler, it worked but still droned for me, so for you guys, it might be ok. Worth a try, they had a money back guarantee on it.

[Sundance 6g72]

money guarantee after i weld it to my exhaust? Naw I like mine but just too loud for some people.. a second magnaflow should do it.

i love the idea of a cutout though

[turbovanman²]

money guarantee after i weld it to my exhaust? Naw I like mine but just too loud for some people.. a second magnaflow should do it.

i love the idea of a cutout though

Yep, even if you weld it. I run 2 mufflers, still drones right at 60-70 mph, sigh. I now run a Flowmaster 70 series big block and another Magnaflow, flows nicely and isn't too loud, going to put a bullet cat in and that should be enough. Now I have a cutout, I don't care about plugging up my exhaust. Still considering a stock muffler, lol.

[bond_bbs]

only issue on the cutout is that i hear they take a few seconds to open up.. so if its wired to the throttle it might lag a little

That's why I would build in an override. The WOT trigger is nice for those quick highway blasts, and light to light racing.

But honestly - if you're worried about it taking a few seconds, get a manual / cable operated cutout and rig up your own solenoid to it. The reasons I say to use an old power door lock solenoid are:
1. They're very simple and easy to wire up.
2. They're usually pretty weather resistant, as they're inside a door which gets wet, cold and dampness.
3. You can find them in a million junk yards everywhere for dirty cheap.
4. They move seriously fast in comparison to a stepper motor system which is what it seems the cutout kits use.

[MC#4]

Got about everything I need for my exhaust today! Machine shop has a headgasket for a template and is making me up a torque plate and shel-game has my ecu and is removing my rev and speed limiters. This project is slowly coming together.

[turbovanman²]

Very cool.

[Sundance 6g72]

while he has your ecu, you might consider having him fix the timing. last i checked, he said the stock ecu has a timing "dip" or something like that. if your naturally aspirated, it dosnt hurt to run 2-3 more degrees on the stock ecu. its proven to make power.

those steel pipes look nice too

[Ondonti]

columbia river flanges?

[MC#4]

columbia river flanges?

Yep,everything in that pic is from columbia river. There's another company in canadia makin em for like $36pair. When I went to buy them their site was actin up + I'm sure shipping would have been pretty high. Columbia river gets $30ea. 3/8" thick.



As far as moving timing goes. I can't advance it since I'll be running about a 100hp shot of nitrous. I've always read that you should retard stock timing 2-3degrees on nos, so I figure I'll just leave it stock and let the nitrous make up the difference.

[Sundance 6g72]

oo yep i remember now..

[MC#4]

Just a quick update. I haven't done much of anything to my shadow lately. I'm too busy dumping bucket loads of money into my stealth. I'm still not sure exactly what I want to do with the shadow and now it looks like I won't be tearing it down until the new year. I just have other stuff that needs done first + I'm damn near broke .

Anyway, I did get my torque plate from the machine shop today. It looks like it will work, I just need to make up some 3/4" spacers for under all the bolts so they tighten down properly. The motor in the pic is just a mock up motor out of a 99 caravan.

[Sundance 6g72]

wow, looks really nice!

[Vigo]

I'm damn near broke .

That's what TT 3si are for.

I want a sohc one.