Archive for the ‘Track day toys’ Category

Missing misfire

Thursday, September 8th, 2011

This Astra race car came to us with a misfire that only occurs after half an hour or so of running on the race track. We did a few checks and  a bit of digging around. The ECU is a Canems which we use quite a lot of. After running a little data logging and looking at the program it showed the injectors were running beyond their duty cycle and some temperature corrections seemed a little odd. We changed the whole throttle body assembly for one with bigger injectors and the car was remapped to suit. So far it looks as though the problem is solved.

Making the most of it

Thursday, September 8th, 2011

We had a highly strung new shape imprezza in recently that had modified and tweaked to within an inch of it’s life. The only problem was that it’s very expensive stainless exhaust was now a bit too loud. Rather than build a complete new system we designed and built a special slim line box with high temperature wadding to sit in the centre of the exhaust. The performance remains the same but the owner can get off his drive in the morning without the neighbours complaining.

Tardis exhaust

Thursday, July 28th, 2011

we always say that just about anything is possible when it comes to building exhausts. that is assuming you’ve got enough space to fit in big enough boxes. The owner of this Porsche wanted to keep it pretty quiet but also had a limit to his budget, so fancy designs or even large silencer boxes were out of the question. the problem is that with the engine hanging right out of the back there isn’t much room to play with. that’s a problem if the exhaust needs to be quiet as less noise means more exhaust boxes. In the end we twisted the pipework around a couple of standard pattern boxes and slipped in a decibel insert to keep the reverberation down.

Mondeo based jigsaw

Thursday, July 28th, 2011

If you’ve ever wondered what the first part down the production line is on a V6 mondeo, the answer is ‘The Exhaust Manifolds’.  Our very good and regular customer of ours found himself in trouble when yet again no local garages or exhaust specialists would help him. Despite the drive he wound up back at our door hoping we could fit his tubular exhaust manifolds for him. Unfortunately there were several stubborn nuts and bolts in awkward places making the task a struggle. After several hours we had the manifolds off, or more specifically the car off the manifolds. Once back together the car sounded awesome. Check it out  on you tube on-

Awkward Alfa

Thursday, July 28th, 2011

This beautiful looking GTV had been giving it’s owner headache and heartache for months. The owner wasn’t shy when it came to getting his hands dirty and certainly know’s his way around Alfa’s. Everyone needs a little help from time to time though and we’re more than happy to work alongside the owners efforts.  The car has a pretty big turbo blowing through twin 40 DHLA carbs with a Canems ECU controlling the sparks. Every part of the system had faults that interfered with each other making the task of getting it running like trying to knit spaghetti. We did a little rewiring and resetting of things which improved the situation. Sadly as hard as we tried the carbs wouldn’t work sweetly, although it was healthy enough for an MoT. These projects are rarely a quick fix, more work in progress. The owner has new carbs on the way and we’ll try again when they arrive. Despite the challenge it’s a pleasure working on such a beautiful and special classic.

Performance Porsche

Tuesday, June 14th, 2011

We’ve helped out with quite a few jobs on this Porsche. It has been taking part in the MSVR trackday trophy this year and was in need of a new exhaust. The owner wanted stainless steel and to keep the noise to around 95 db so it remains eligible for even the quietest trackdays. The system was build from 2.25 inch 304 stainless using 2 boxes. The result- 94 db at 3/4 RPM. Exactly what was ordered.

You’ve got to be flexible

Tuesday, June 14th, 2011

Most exhausts have flexible section in them to allow the engine and exhaust to move independently of each other. A lot a manufacturers these days are putting the flex on the same section of exhaust as the cat. That means that when the flex goes you have to bin the cat and dig deep to replace the lot. At AA Silencers we can replace the flex by itself. We weld in a flex to the same specification as your original exhaust often for less than half the price of a replacement exhaust.

Rapid Robin

Thursday, May 26th, 2011

AA Silencers and AA Sport went to Mallory Park with their Reliant Robin recently. The theory behind this is that if we can make a Robin handle on a race track then we can do it to anything. The next step is better braking, front suspension tweaks and then a turbo. The car handled well considering it’s deficiency in the wheel department and was ridiculous fun to drive. Don’t knock it ’til you’ve tried it.

More Vroom for a VXR

Thursday, May 26th, 2011

This Astra VXR has already had a little work done under the bonnet but before it heads off for a re-map the exhaust needs attention. The customers request was simple, fast and loud. A 200 cell sports cat replaced the original and three inch stainless steel pipework weaved it’s way to a tiny back box. The VXR tip was replicated but made a little bit bigger to set off the look. With the added poke from the free flowing exhaust the customer quite wisely decided on a brake upgrade. the car has massive brakes as standard so we settled on simply uprating the pad. EBC Yellow pads were fitted to keep things useable on the road and sharp even when hot.

beef up your flange

Wednesday, May 25th, 2011

This XR3i challenge car came to us in need of a custom engineering job. The front pipe to his race exhaust had been supplied by another well known exhaust builder but the front flange wasn’t strong enough. It kept bending causing it to blow.  Also the centre section of the exhaust wasn’t properly supported causing it to droop down and catch kerbs during the race. We gas flowed the manifold as far as regulations allowed and had a new flange laser cut from industrial strength steel. We designed and built a new smooth flow front pipe and centre section, then mounted them all with extra hangers and supports.