Mod Description

Info about the manifolds cracking on the smart turbo.

Mod Details

PremiumYes Difficulty Mod ID654 CreditEvil/Luc For Linkhttps://www.evilution.co.uk/mod/turbo-manifold-cracks.htm Copy to Clipboard

Manifold Cracks

It is a common fault on the old 600 turbo for cracks to appear in the manifold. This leads to loss of pressure and escaping waste gas, if this occurs the lambda sensors get confused by the readings and the engine will pulse under normal driving. Smart redesigned the turbo which made it better but over time, we started seeing the 700cc turbos crack too. Again, you’d feel a surging as you drive.

The cracks aren’t usually very easy to spot but some can be very obvious as seen below. The 600cc turbo tended to crack more on the outside of the manifold but on the 700cc turbo, many of the cracks were hidden inside the casing by the wastegate and the impeller wheel.

These cracks are not just inherent on the 600cc turbo design. Although at first it looked like smart had fixed the problem, it was clear that they had just delayed it by using a thicker manifold.

The extra thickness slows the formation of cracks but physics says that once a crack does appear, it will be bigger and more of a problem of the cracks in the thinner 600cc turbo manifolds.

Fudge from Fudgesmart has already discovered a 700cc turbo cracked so bad, it fell into 2 pieces.

Why Do These Cracks Form?