Single turbo VR4

[jbuhrman]

Did you use any sort of flexipipe between the 2 exhaust manifolds?

Steve

As long as he has solid mounts there won't be any issues, if he doesn't he may(or will if he has stock mounts) have issues down the road with cracking.

[jbuhrman]

"Between" the manifolds.......they always crack without, Heat wrap makes everything far worse. Mounts have nothing to do with it.

Steve

The vibrations are what cause the stress on manifolds. Having solid mounts takes vibrations and minimizes them to a point of moot. Ray doesn't have have flex sections, What are you going off of with they "always" crack without?? Who else has finished this and has this set up running? With no vibrations on the welds or the welds being what holds a 40lb turbo then why would they crack other than a crappy weld?

Here are ray's manifolds notice no flex section??








[/QUOTE]

[B-Man]

I jizzed a little.

[jbuhrman]

I jizzed a little.

Ya know look closely at that pic.... his knock sensor is corroded.

[stealthee]

"Between" the manifolds.......they always crack without, Heat wrap makes everything far worse. Mounts have nothing to do with it.

Steve

Absolutely NO need for a flex between the manifolds. NONE.

[jbuhrman]

It's got nothing to do with vibration. It's because when the pipe gets hot, it changes length. Heat wrap makes it hotter and longer. Then when it gets cold, it shrinks. The block stays about the same size though.

If you were to bother reading the turbo "bible" it even says the same thing. Anyone who's turbod a V8 or 2 knows.

Anyway, time will tell. If a weld doesn't actually crack, you'll end up with a warped flange, one way or another you'll end up with boost holding problems like all single turbo conversions on V engines do.
That's why Mirtsubishi builds V6s as TT. Honda made a single turbo V6 a few years back, That had a flex section in the pipe.
The other option is a slip joint but they either leak or seize up.

Misinformation tends to come from "performance" shops as a means of covering up bad workmanship.

Steve

Turbo Bible huh? Where'd you read it internet?

Ya know what no your right... I only came up with the concept and design for the set up he is running.. but I dont know what Im talking about, My career is turbo diesels that use 4 fucking turbos per engine, and create enough heat to make you pass out just by opening the damn door that power an entire naval ship but I dont know what Im talking about.

So if these shops are so bad practiced why are people still making headers with no flex pips??

But like I would take advice from someone that owns a hood like yours jackass.

*added to ignore list.