Pipe loose inside the pipe

[deetap]

During the annual tear down and rebuild of my CF700 Turbo, I found that the small "backpressure" pipe was loose and rattling inside the pipe.

It seems when welding on the turbo adapter to the pipe (a couple of years ago), I've cut to close to this pipe, and it has now come undone.

My question is, do I need this pipe or could I get rid of it?

In the picture I've reseated the pipe, but not welded it.

 

[wasatchcomm]

my kit does not have that pipe inside, so i would think you dont need it.
looks restrictive.
my kit is a bd kit from last year, not sure on anyone elses kit or older kits though....
good luck!

 

[deetap]

my kit does not have that pipe inside, so i would think you dont need it.
looks restrictive.
my kit is a bd kit from last year, not sure on anyone elses kit or older kits though....
good luck!

It did not come with the BD kit, it was part of the original pipe...

 

[Wheel House Motorsports]

get rid of it.. its an internal stinger and i beleive is part for noise, etc.. maybe not, on the doo's there about 2-3x the length and break off a lot more and people have all sorts of trouble with the turbo sleds due to them breaking off.

cut it out and be done with it.

 

[deetap]

get rid of it.. its an internal stinger and i beleive is part for noise, etc.. maybe not, on the doo's there about 2-3x the length and break off a lot more and people have all sorts of trouble with the turbo sleds due to them breaking off.

cut it out and be done with it.

Thanks, I will get rid of it

On a side note, check out the boost leak...

 

[Wheel House Motorsports]

nice.... bet she was REALLY snappy and made all the power you remebered!

sled should be a lot happier with the pipe all fixed up!

 

[Tonysnoo]

During the annual tear down and rebuild of my CF700 Turbo, I found that the small "backpressure" pipe was loose and rattling inside the pipe.
In the picture I've reseated the pipe, but not welded it.

There are lots of theories on this subject. I did some testing on internal stingers two years ago with my first turbo build(M7/1000 big bore). The internal stinger was awesome for response and bottom end. It built a lot of heat on my big bore at the top end, so I didn't run it.

Danged, If you only knew how long it's been broken. If you haven't had any issues with heat then it might work just fine on a stock bore turbo setup, and allow you to have some better bottom end response? Lots of guys are saying to open the pipe up, but I believe there is performance to be kept from letting the pipe be a tuned pipe(with some restriction).

Sorry I can't directly advise you in your exact question, but I just wanted you to know there could be a performance loss with less pipe restriction.

Good Luck!

 

[deetap]

There are lots of theories on this subject. I did some testing on internal stingers two years ago with my first turbo build(M7/1000 big bore). The internal stinger was awesome for response and bottom end. It built a lot of heat on my big bore at the top end, so I didn't run it.

Danged, If you only knew how long it's been broken. If you haven't had any issues with heat then it might work just fine on a stock bore turbo setup, and allow you to have some better bottom end response? Lots of guys are saying to open the pipe up, but I believe there is performance to be kept from letting the pipe be a tuned pipe(with some restriction).

Sorry I can't directly advise you in your exact question, but I just wanted you to know there could be a performance loss with less pipe restriction.

Good Luck!

Thanks for the input. I have just welded my pipe back together without the stinger. I will keep an eye on the performance, and store the stinger in case I want to put it back in.