By Rob Sabbadin:
What I wanted to talk to you quickly about today is different turbo chargers and some of the things that people do with manifolds, dump pipes, different gaskets and washers that are used.
With the manifold here that we have in front of us, this manifold's been HPC coated and the dump pipe has been wrapped.
The purpose of this is to actually help with the spool-up time of the turbo. If we maintain heat in the manifold it actually helps reduce the spool-up time. So, this whole manifold has been HPC coated, also, the dump-pipe has been heat wrapped.
This is also good for heat distribution in the engine bay because it's maintaining the heat inside the manifold and not expelling the heat under the bonnet.
Also, with a turbo it's very important when they are bolted up to a manifold, that all new gaskets and locking nuts are used. There can be a fair bit of vibration from an exhaust system attaching to a turbo which goes through the whole manifold. It's very common for bolts to come loose.
In this turbo here, it's had all new nuts and studs put on with locking tabs, along with locking nuts.
An important thing with turbos is a good quality turbo to manifold gasket. There are cheaper and higher quality gaskets available. The type of gaskets that we use are the same as EOM gaskets, which is a thicker gasket, which is three shims internally which are folded together.
These gaskets give a lot more "crush" and is a lot better with heat, and they will handle severe heat all of the time without failure.
You can check out more information on Turbo Chargers and Fuel Injection by Rob Sabbadin.
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