Jon, James & Myles build/Upgrade/Use a Westfield SEIW FW and Eleven
Friday, 27 April 2018
Visit to Slark Race Engineering
Today was the visit to Slark Race Engineering to tune the engine and confirm the tracking.
As with the IVA the weather was truly awful so a good test of the tonneau which turned out to provide reasonable protection.
Neil confirmed the static timing and set about establishing some baseline runs and playing with the advance map.
When he was happy with the timing he then started playing with the mixture and determined that it needed more fuel mid-throttle but was slightly rich on full-throttle.
He removed the needle and trimmed the mid-range section and after a couple of goes was happy. After a bit more adjustment the engine was putting out 84bhp with 80-90 lbs/ft of torque between 2.5k and 5.5k. The more observant will notice that I've fitted the 1" extension to the rear shock absorbers, cut a hole in the ali panel to allow the diff to drop further and halved the lower trailing arm bolt heads to allow them to pass the chassis - the car seemed much better for it but it's early days and I still need to play with the shock absorber settings.
Next we setup the ride height, camber and toe-in all of which only needed a small amount of adjustment and finally we put the car on the scales to find out the overall weight.
Including 3/4 tank of fuel.
The weather on the drive home was no better than the journey there however, the engine was running very well and the car was noticeably more torquey and smooth.
I'd fitted the 1" extension to the rear shock absorbers, cut a hole in the ali panel to allow the diff to drop further and halved the lower trailing arm bolt heads to allow them to pass the chassis.