BTB Exhaust have made our exhausts & manifold systems for many years; the design, construction & accuracy has always been to a high standard & we have been able to develop increased performance with their help. Unfortunately, in recent times many companies have appeared on the market claiming to produce systems of equal or better quality, this has caused us quite a few problems when people have bought inferior products & then found their engines don't produce the performance that we have quoted, we have then received phone calls & emails asking us why the engines do not perform. We have found it difficult in recent times to be competitive selling the high quality BTB manifolds, so we have now asked BTB to deal direct with any customers of ours & supply the systems at the cost we would pay for a single item. We are still selling a limited number of exhaust manifolds (see below).

With our latest designs to get ever more horsepower, the manifolds are becoming more complex & therefore more expensive to make. When an engine kit is purchased from us, we will supply a drawing so that the manifold can be made to suit that specification. The drawings can be purchased separately, so you can have the manifold made by a company of your choice however if it is not made exactly to our specifications, you will not get the performance.

Remember the exhaust system & manifold is as important as any other part of your engine & if it doesn't work you will have wasted a large amount of money tuning the engine. Also don't forget that labour is getting expensive & a good quality exhaust manifold & system do not come cheap.

You must fit the exhaust manifold before the shell is finished, as with some rear wheel drive cars using wet sump; sometimes the sump has to be modified. Please click here to see modification for the big winged sump.
Some modifications to the shell, engine mounts or cross member may be needed, as everyone fits engines in different positions (especially rear wheel drive) and we cannot guarantee that it will just bolt straight on. It would be impossible for us to have produced a manifold that suited every car & installation. We have made all our manifolds using a donor car that we hope is characteristic of the majority of installations.

If your car is unsuitable for the style of exhaust manifolds shown below, you can purchase our exhaust system designs, which you can then have made up by an exhaust manufacturer. Please contact us for details.