Hi
The original headers on my GTO have developed cracks,leading to issues with rego etc. My thought was to fit a set of extractors, however all enquiries so far have come to a dead end. The only alternative I have been offered has been a Sigma/Triton set that would need extensive hacking and dollars to fit .Any ideas would be most welcome? Thanks Tony
easy fit extractors for GTO 4G 52 engine
Re: easy fit extractors for GTO 4G 52 engine
Your likely only option is custom as anything from a sigma/l200 wont fit without a major rebuild due to the tight fit between gearbox and steering box, which would probabely cost more than custom. The other problem you might have is that there were 2 different exhaust bolt patterns for the 4g52 GTO heads. If you have a square port head or an early round port head then the bolt pattern is different to later Astron engines that came in Sigmas etc so you can't even use a later cast manifold with making up an adapter flange.