355 exhaust manifolds

Well firstly this is a common problem which Ferrari tries to rectify by changing the design slightly in 97.

Three things seem to happen.

Firstly the aux air pipes that enter the manifold break at the join and ferrari alterered the design to make the air pipes in a straight rather than a sort of v configuration. This helped a little with that problem.

Secondly, the manifolds themselves, made by Ansa ,are made of very poor quality stainless and the constant cooling cycles coupled with heat shields make the s steel brittle and they break at the joins.

Thirdly, where the tubes that make up the manifold are bent the outer side of the bend is then wafer thin; it is quite common for the exhaust gases to 'burn through' and in this instance it cannot be welded.

Tubi have solved the problem; proper stainless with cut and welded joins.

the other alternative is to contact QV london who offer rebuild manifolds with the proper material and many people are doing this including challenge cars with no reliability issues. Many on this site use them I think its about £500.

I had the same problem but actually decided on tubi because in fact manifolds can fail after 6K I know of one car thats had 3 fitted in 7K.

Whilst your car is under warranty its the hasstle of being off the road and the constant threat of it breaking which is really the only major fault with the car. If I were you I would pay QV or if your feeling wealthy, Tubi, to resolve the problem once and for all, otherwise its a constant cycle.