Turbo Outlet Silicone Hose Torn - Twice!

[driftmeister]

Im was running 1.4bar of boost (T04E turbo) and it happened during shifting on WOT from 2nd to 3rd gear. Incident happened 2 weeks apart, first was a Samco Silicone hose and the replacement is an original black rubber hose type. Im now on my 3rd hose and worried it may not be the problem of the hose quality. I was told that it could be vibration or the manifold is too hot that it weakens the silicone material.

Appreciate some feedback from Turbo Guru's...

[r33_racer]

if its a 90 degree hose coming from the turbo outlet, then you cant use them successfully long term....the heat from your exhaust manifold weakens the back of it, that combined with internal pressure is enough to bust em open. Best option that always works is to tig on a 90 degree ally bend to replace the silicon hose.

If its a straight silicon hose and its tearing open....then you have some other major dramas. Ive never seen a straight silicon hose rip open from internal pressure or from movement. Maybe you could have a busted engine mount and thats letting it move enough to rip it???

Tried to cover both options since you didnt state which type it is.

[FineLine]

if its a 90 degree hose coming from the turbo outlet, then you cant use them successfully long term....the heat from your exhaust manifold weakens the back of it, that combined with internal pressure is enough to bust em open. Best option that always works is to tig on a 90 degree ally bend to replace the silicon hose.

If its a straight silicon hose and its tearing open....then you have some other major dramas. Ive never seen a straight silicon hose rip open from internal pressure or from movement. Maybe you could have a busted engine mount and thats letting it move enough to rip it???

Tried to cover both options since you didnt state which type it is.

Thinking the same Mike, I tore a couple of 90 degree jobbies till I wised up and welded an alloy bend in place.

Heat from the manifold was the culprit.

[BHDave]

I had some success with making heat shielding. It increased the lifespan and it didn't fail again before i changed the setup completely but the signs were there that it was going to eventually. It's a lot easier than pulling evenything off too.

You may also have issues with tension in the pipes. Big shift, engine rocks a fair bit and the metal pipes have no give, the silicone bend is the weak link. Just a thought.

[R31Nismoid]

Thinking the same Mike, I tore a couple of 90 degree jobbies till I wised up and welded an alloy bend in place.

Heat from the manifold was the culprit.

Mine caught fire one day because of the same thing

As the others have said, gotta use metal piping. The heat is melting it... and get it too hot it'll end out like mine

[W0rp3D]

for a cheaper and easier option what about wrapping it in some heat shield tape or foil?

[FineLine]

for a cheaper and easier option what about wrapping it in some heat shield tape or foil?

Tried that after the first time. It prolonged the life but it inevitably failed again. Welding a piece in is the best solution.

[driftmeister]

for a cheaper and easier option what about wrapping it in some heat shield tape or foil?

Im getting it thermal wrap plus foil as double heat prevention. This way i can monitor when it bust again then most likely it would be engine mounting.

The hose now used is a straight type which is so close to the manifold, not sure if a fabricated metal heat shield can fit in between. Getting an advice from an exhaust shop later too.

[2gceffy]

picture could really help of location and size ect