Turbo manifold life span

[bigmansm]

Okay well, people alwyas say that the cats iron turbo manifolds will last a life time, and i completely agree. But i also know there is a few people running a tubular manifold, one of these people said " I'm sure my manifold will evetually crack" and boost logic offers a 3 year warrenty on their tubular manifold.

So, what makes them so prone to cracking?

Some say it is the welds. Now, is this the fact that in some cases there are so MANy welds? Or is it the welds in general?

Now, there are lots fo headers out there that the tubluar part is welded to the flange and I have never heard complaint about these units? Is the turbo to blame for a highier risk of cracks in the welds?

Imagine this, a turbo manifold that the pipes are all one piece bent perfectly, the only welds would be at the flange. The welds on the flange are double welded and a weld els is done to the inside of the flange on the exhuast manifold. Would this manifold still have a shorter lifespan compared to a cast iron manifold?

[Arman S]

??????

[bigmansm]

Originally Posted by Arman S

??????

Whats the point of this post?

[SwolenColen]

i'm pretty sure that steel cracks no matter what the shape or how many welds or w/e... just under a lot of heat its a bad material

[Arman S]

Originally Posted by SwolenColen

i'm pretty sure that steel cracks no matter what the shape or how many welds or w/e... just under a lot of heat its a bad material

I was WTF the idea at the end of your post. not making fun, just trying to put it into picture..

[VASHEE]

lol this sounds like me when i try to confuse my friends

[bigmansm]

well maybe he meant to say Steel CAN crack, especially in this application due to the heat, pressure and added weight of the turbo.

Right????

[BMWBry]

There are so many welds to reinforce the manifold. with only 16 welds, the thing would crack like a hot glass jar in a cold bucket of water.

[bigmansm]

Originally Posted by BMWBry

There are so many welds to reinforce the manifold. with only 16 welds, the thing would crack like a hot glass jar in a cold bucket of water.

this doesn't even make sense at all

[red_wedding]

he's saying that the extra welds help to reinforce the manifold..

[bigmansm]

Is anyone running the boostlogic manifold? or other tubular turbo manifold?