Club 80-90 Forums

stainless exhaust and a slightly healthier cam aimed at better torque

One of the “extra’s” already fitted on my van was an “Autocavan Powertorque” exhaust system. This was a tuned exhaust with stainless expansion bellows, which went into an Aircooled 2 litre type Stainless Steel Silencer with single outlet. It has a bigger bore manifold (38mm instead of 36mm) & is a very neat set up, which has always given the vehicle a bit more power (and a very nice sound!). Over the years I have had to patch it up a few times & sleeve the bellows sections as they eroded away. This was becoming a bit of a problem as the mild steel flanges on the system also eroded away. After two pipes broke completely at last years Vanfest (You might have heard it whilst I was doing the “Big Split”!) I decided that it was time for a new system. Getting a new silencer was not a problem as I found that the exact same profile box is still made & sold by “Waggonworks”. The original arrangement came with a very substantial saddle & clamp arrangement to hold & support the silencer box. This means that there is a lot less stress put on the head exhaust studs & also it allows you to hang the exhaust properly so it does’ not droop. I have seen many of these exhausts on Aircooled vans that look very lopsided.

Unfortunately, It is not still possible to get the original tuned manifold that will fit on a 2.1, or the saddle/clamp arrangement. (In fact I have never seen a similar arrangement to mine on any watercooled T25).