Recently the Saph took a thrashing quite happily around the track at Driftland after having its recently rebuilt CR Turbos T34 fitted. This all went well, but afterwards the manual boost controller started allowing the peak pressure hit 30psi instead of the intended 24psi! It might be bloody fast, but it’s a recipe for disaster if allowed to go unchecked. Also raising a 10psi actuator to a consistent 24psi in all situations is a tall order for a glorified bleed valve as well.
The original amal valve is the typical choice, but these are known to blow apart at high pressures, and my previous experience on RS Turbo engines usually involved them not even working half the time! Air injectors are the conventional upgrade on a YB, but they’re expensive and require mapping by a tuner. So I’ve gone down the road of a modern electronic boost controller which is much more commonly used in today’s tuning. The very popular and compact Gizzmo unit retails just over £200, and is easily configurable by the driver. Also a ‘bleed off’ style of controller is much safer in the occasion of a failure when compared to the ‘bleed on’ process air injectors use. The top spec MS-2 I opted for has all sorts of great features such as a self-programming turbo timer, and the ability to create an RPM related boost spike in the map to increase mid-range performance. By the next update I should have it all installed and set up, I can’t wait!
The Gaz Gold coilover suspension on the Saph has been great both on and off track lately, but there has been an issue with springs making noises, and dislocating at times when jacked. This is mostly down to the very low ride I’m currently running, so to cure this I ordered a set of £60 helper springs direct from Gaz. Arriving the next day with perfect fitting mounting collars they instantly solved all issues on the springs. Highly recommended, especially if you are running very low, or often jacking up to swap wheels etc.
On my ever continuing quest to battle under bonnet temps this month I spent at least an hour at the side of the road painstakingly wrapping ten metres of exhaust heat wrap around the manifold and downpipe, plus a pair of DEI heat sheathes were fitted to surrounding hoses.
As I write the Cossie is away at AMK Garage once again with even more upgrades in store. All this is happening for a reason too, as in exactly a month’s time I’ll be setting off on the Newcastle to Amsterdam Ferry, and then onto the Nürburgring with the Cossie! It’ll be my forth trip to the fearsome Nordschleife, and the Saph’s first. Currently I’m doing my best to learn from my previous experiences and see too every potential issue beforehand. Especially as on my last trip in 2011 I only managed 2 laps due to a turbo’s main shaft breaking. Nothing is being left to chance this time!
Driftland photos by: