Exhausts

There are several options available for those requiring a replacement exhaust system.

  1. a replacement Toyota Sera exhaust system from Toyota
  2. a stainless steel system, made in the UK, that will outlive a conventional steel system OR,
  3. spending time modifying and adapting exhaust parts from other cars

We have had jigs made to replicate each section of the Toyota Sera standard exhaust in stainless steel.  Patterns have been taken from a genuine Sera exhaust, so they are a good fit.

Whilst there are many franchised dealers who will make you a cheap bespoke stainless steel exhausts for cars, but in my experience these tend to be tailored to the boy-racer who priorities are an oversize tail pipe and a loud noise.    These outfits are often unaware of the science behind exhaust design, so if you choose to use these places, be very clear on what you want from the exhaust in terms of sound and reject the car if you are not happy.

  • Manifold – cast iron. Can supply a better manifold if necessary ** special order item **
  • Downpipe – two into one with flexible section
  • Catalyst – have a pipe to bypass this if allowed to do so. (for the UK the catalyst is not required for the SERA – because there is no UK version of the Sera in the MoT testing handbooks, they have to do a different test – there is full details in all MoT testers handbooks)
  • Centre section
  • Rear Silencer

The joint between the centre section and the rear silencer is the most common problem area. Some people need to replace both sections, some people only need to replace one section.

There is no expensive freight from Japan, no delays due to customs, no exchange rate problems, simple payment procedure, they last longer, sound nicer and represent very good value for money and also give a slight increase in performance.

Hints:   The fasteners that Toyota originally fitted are very high quality, and should come undone, even when force required seems excessive.   A small amount of penetrating oil or application of heat will help shift the most stubborn bolt.

The downpipe is joined to the manifold with studs – the threads of these can break, and can be awkward to extract.   It is often simpler to remove separate the downpipe and the catalyst and to remove the downpipe and manifold, where they can be separated on the bench.   We have found that the exhaust manifold gasket can often be reused.    There is a shield over the manifold which is very easy to remove, but remember to disconnect the sensor in the manifold – electrical connector near radiator.