flex pipe

[BigMo]

Koa Man,



Can you explain why the flex pipe cannot be used in a bent position? The bends I'm referring to may only be 10 degrees; we're not talking a 90 degree bend.



Thanks for your input.

 

[DennyDay]

I've used it for years on big trucks for just that reason, it'l bend. I always figured if it would stay bent, in the position I wanted with out holdin', it would be OK. I may be wrong, but never had a problem.

Wouldn't be supprised if it were a manufacturers liability issue. Denny

 

[CumminsAholic]

The only reasons I can think of is because it doesn't bend very fast/sharp and if it's not stainless after awhile it'll rust and then it'll come apart at the bend. I tried to do bends on a ramcharger a few years ago it worked for awhile, then it rusted because of the salt on the roads here. Then... . well, it looked like a slinkee was following me down the road.

Corey

 

[Koa Man]

BigMo, I replied to your question on the exhaust plans thread.

 

[BigMo]

Koa Man said on Exhaust Plans thread:

BigMo, when planning the layout for my stack exhaust, I had first figured on using flex for some of the bends. A friend, who is a big rig mechanic, told me the pipe has to be straight. Exhaust turbulance and cracks will occur if the pipe is bent. The Donaldson and Nelson exhaust catalogs both say the same thing.



I am not an exhaust expert, but just repeating what I have read and heard from exhaust parts manufacturers and a knowledgeable mechanic.

Thanks for the info, Koa Man.