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New 3" exhaust and pics


cjames

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Ok, so I got tired of sitting on my hands waiting on parts and machine shops. I was hoping to have the turbo engine at least long blocked by now... oh well.

 

I decided to go ahead and get the exhaust built, at least most of it. The new 3" system now connects to the stock NA downpipe, at the flange where the resonator used to go. When the new engine is in, I'll cut off the flange, and build a new downpipe to connect to the system.

 

I used 3"x.065" 304 SS tubing. Its a little heavy, but the tube and fittings came from the scrap bin at work, and it welds real nice. I think the .065" should hold up for many years.... The muff is a Magnaflow 3"x3", I think the case is 4"x14". I was a little worried that it may be too loud on the NA engine, but really it's not bad.

 

This is my first attempt at fabricating exhaust. I welcome comments and criticisms.

 

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Thanks for all the positive comments!

 

EMWHYR0HEN, I am in the process of building a turbo engine, read the first sentence in my post ;) its ok, I get distracted by pictures too.

 

JSM, the wood drive on ramps are totally custom, built 'em all by myself too, yep . Without them, the car sits too low to get the jack under... the tricky part is remembering to put the wood back under the wheels when lowering it off the stands... Not that I've ever done that :oops:

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Thanks for all the positive comments!

 

EMWHYR0HEN, I am in the process of building a turbo engine, read the first sentence in my post ;) its ok, I get distracted by pictures too.

 

JSM, the wood drive on ramps are totally custom, built 'em all by myself too, yep . Without them, the car sits too low to get the jack under... the tricky part is remembering to put the wood back under the wheels when lowering it off the stands... Not that I've ever done that :oops:

 

Opps sorry, I missed that! Ive got to stop jumping to conslusions....

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  • 1 month later...

i just built mine like a week ago from the turbo back and yours is WAY nicer than mine. i just used aluminized steel mandrel bends and just put her together. i was in such a rush i didnt even try to clean my welds up.(friday before DNI) Ill go back and see if i can clean them up when i put my new he351cw in. ill have to modify my dp a little bit to make it work.

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How loud is that muffler?

 

It's by no means quiet, but it's not so loud that it wakes the neighbors. It occasionally sets off car alarms (kinda fun) and it has a rather irritating "ring" at 2500rpm ('bout 63mph in 5th gear). When I get the other engine built, the turbo should break up the resonance, and quiet things down a little. I'm happy with it, but it's not the muffler I'd buy if I were sticking to an NA engine.

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  • 3 weeks later...

I agree with everyone else on your build. I had cut my exhaust system in half having it exit right under driver seat. Another racer told me to try it to lose a couple of pounds and free up some hp.

 

Found it to be a big mistake and went to local muffler shop and they wanted over $175 just to put in about 6' of piping.

 

Being able to do it yourself is great.

 

Tom

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Wait, you said this was your first system?! :shock:

It looks great!

 

I agree, a sound clip is necessary.

 

Thanks for the compliments. I should say that although this is my first exhaust system, but I'm no stranger to welding pipe. I work in the engineering dept at a food plant, so I do quite a bit of fabricating and welding, including a little pipe... I will admit that fitting the exhaust was a little more challenging than running process piping at work thats level and square, with plenty of room to work. My TIG welder isnt near as nice as the one at work either. I'll work on a sound clip.

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Cjames, we have the same muffler but mine used a 2.25 inch pipe to connect to that muffler. I got short of $$$. HE!HEH!EH!

 

magnaflow sounds great! Even greater on a pipe like yours. keep up the good work!!!! :)

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CONGRATS! Ive seen guys that have been building exhausts for YEARS not do as nice of work...........in fact my local muffler shop has NEVER done work on welds that looks that nice!

 

BTW WHAT TYPE, MODEL AND BRAND OF WELDER AND WHICH AMP & SHIELD GAS SETTINGS...WIRE OR RODS, MIG? TIG? HOW ABOUT MORE INFO ON THE EQUIPMENT YOU USED AND SETTINGS, Im sure some of us can always use more info.

a JOB like that plus materials would easilly cost several hundred dollars at most shops so it makes having a welder and the skills almost a no-brainers and easily cost justifying the welder purchase , returning the expences in only a few jobs , from that point on the welding equipments paid for....I purchased my MILLER 252 MIG last year for 2K and its already paid for itself, I purchased a USED 330 amp TIG IM still learning to do welds with but the more I use it the better I get and the more I prefer TIG over MIG for some applications

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CONGRATS! Ive seen guys that have been building exhausts for YEARS not do as nice of work...........in fact my local muffler shop has NEVER done work on welds that looks that nice!

 

BTW WHAT TYPE, MODEL AND BRAND OF WELDER AND WHICH AMP & SHIELD GAS SETTINGS...WIRE OR RODS, MIG? TIG? HOW ABOUT MORE INFO ON THE EQUIPMENT YOU USED AND SETTINGS, Im sure some of us can always use more info.

a JOB like that plus materials would easilly cost several hundred dollars at most shops so it makes having a welder and the skills almost a no-brainers and easily cost justifying the welder purchase , returning the expences in only a few jobs , from that point on the welding equipments paid for....I purchased my MILLER 252 MIG last year for 2K and its already paid for itself, I purchased a USED 330 amp TIG IM still learning to do welds with but the more I use it the better I get and the more I prefer TIG over MIG for some applications

 

I was hoping it wouldn't come up, but OK. My welder is a POS Century 230/140 amp AC/DC arc welder. It runs stick pretty well, and it's actually a great power supply for TIG welding. I have a 200A air cooled TIG torch, argon cylinder and flow meter. I simply clamp the stinger onto the TIG lead. I got alot of it used, and MAYBE have $300 in the whole setup, including the cylinder. The amp control on the welder sucks, I adjust it to where it welds good, don't need no fancy digital readout to tell me where its set. I've never really found a need for MIG, I can arc or tig weld most anything, probably with better results. Bottom line, you dont need alot of fancy and expensive stuff to make good welds. (not to say I wouldn't like to have a new Thermal Arc inverter)

 

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considering the TIG set-up your useing IM even further impressed, but your correct, the more I use my tig welder the more impressed with its potential Ive become,for years I had only an 220volt 230 amp ARC welder and a oxy acetolen torch, and you would probably be surprized at what can be accomplished with just those, its not that good equipments not a huge help (it is) but the skill and experiance of the guy useing any equipment has a huge effect on the results

 

GAS FLOW RATE SETTINGS?

AMPS?

filler rods?

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