Flexpipe Downpipe

[Cincinnati Guy]

I been throwing around the idea of using some of the good stainless flex pipe for a down pipe until I can afford a real one. 3" is what I want? I just want to hurry and throw out that darn ford down pipe!!! So All I should have to do really is cut the end off the factory down pipe and get a reducer and weld, or clamp it to the flex.

Any others done this?

 

[Diesel_brad]

Dont waste your time or money. Just do it once(and right) and be done

 

[jhnlennon]

Dont waste your time or money. Just do it once(and right) and be done

I agree, its only a lil over 100 bucks for the pipe from banks. Im guessing you would have about 25 bucks spent in parts and all the hassle of fabbing it up. Then you would just end up pitching it anyway, dont see it being worthwhile.

 

[wmoguy]

The Banks DP for the ATS turbo'd pickups is $119 and fits up just nicely. Save up and do it right 1x only my .02

 

[BioFarmer93]

Doing something "right" is wonderful when possible & affordable. This post caught my eye because I may need to use some flex pipe in a totally non-stock double turbo install. Since it seems that the tone of response to this question has already been set, then I will query in a like mode... Why the hell not? What's so bad about it? Nobody bothered to explain anything, yall just slapped that question down like an impertinent red headed step child that had dared to question the adults. Well?

 

[snicklas]

I wouls say with a quality flexpipe, it should be fine... they use flex on big trucks as part of the factory system.... I understand for a different reason, but none the less. I would say, yes cut off the factory pipe, clamp or adapter and clamp and should be good.

One thing I do see is, if you already have everything, it would not cost much more than time and effort. But if you have to go and buy the flex, clamps, adapter(s), you may be close to the same price as the banks pipe.....

I know that Darrin used flex on Droopy and the 4bt he just put in it.....

 

[Diesel_brad]

Doing something "right" is wonderful when possible & affordable. This post caught my eye because I may need to use some flex pipe in a totally non-stock double turbo install. Since it seems that the tone of response to this question has already been set, then I will query in a like mode... Why the hell not? What's so bad about it? Nobody bothered to explain anything, yall just slapped that question down like an impertinent red headed step child that had dared to question the adults. Well?

The reason being is, why hack something together only to change it out shortly down the road with the right thing. I was always taught, if you are going to do something, do it right the 1st time.

 

[sootman73]

http://www.oilburners.net/forums/showpost.php?p=492590&postcount=5

I did it. Why even change it out? mine made a world of difference and IMHO prob works as well as the banks system for much less money. Especially if you use stainless steel it'll never rot out. I also used some heavy galvanized wire to wrap the stock heat shielding around the new piece and it worked great and I didn't have any leaks.

 

[redneckaggie]

that flex is a 100% pita to weld but I see no reason not to use good quality flex if you dont want to mess with the cast outlet then yes just cut the flange on the current pipe and slip the flex over and and weld, make sure to tie in good because like I said flex is a pita to weld

 

[Darrin Tosh]

The Flex pipe works great, When I did the Cummins Swap on Big Ed, I used SS Flex Pipe from a Semi Shop for the downpipe, It was going to be temporary untill I had a DP made, That was 3 years ago, and I am not planning to change it. As Snicklas said, It worked so good on Ed, I used it for Droopy also.

If it is good enough for million mile semi trucks, why would it not work on our applications,..?

Go for it,.

 

[redneckaggie]

for the flex pipe. make sure it is stainless, not aluminized, if you have a big truck shop or boat shop around, check them.

 

[Cincinnati Guy]

I have a shop locally that does all the semi, farm equipment repairs for my family. Ive bought some stainless flex from them before on my 85 I had, was a pita to get it to flex into position, so it lets me know its pretty brute!

I thought of doing this for a temporary solution, BUT now I may just do it for a permanent solution since many of you have done it with good results. I think it may even be easier to get into place since its flex able. I never thought though to do it and leave it permanently!

 

[gunz]

Some people difine 'the right way" as the only way they know how to do something. Doesnt mean other ways are automatically wrong.

Flex pipe is used on diesel exhaust on big trucks. if executed properly I dont see where it would be a problem.

 

[typ4]

Just make sure it is supported at the bottom so it wont try to unwind. But price it first it has gone up a lot.

 

[Diesel_brad]

JC whitney has a 5' roll for $68