The SP Files: January 2010

It has been a while, and quite a lot of progress has been made. Most importantly, we have started the engine, and it sounds good. The idle is steady and not very lumpy, this is due to the ITB's and feels quite strange to me, as I am used to having very lumpy idling cars. I will put up some pictures, of the engine bay in my next post.

I had a couple of setbacks, due to so much custom works especially involving the induction system. Due to the use of an airbox, this has caused some clash with the clutch pump, especially the reservoir. As the airbox was custom made, I did not want to cut and mod it to make it fit, so I had to change the clutch pump. Luckily I was in the UK and a quick visit to Demon Tweeks provided me with this master cylinder from AP racing (part no: CP2623-92PRT115) and remote reservoir (A/PCP4709-13). The bore diameter for the stock pump is 5/8 in or 0.625mm which I have also ordered. I actually asked for this bore diameter, but I forgot to check the merchandise which was actually a 0.75mm diameter. Only realized this after I was back in Malaysia, so I had to resend this and order another unit. This time though I went for the CP4623 which has the mounting holes by 60 deg which will suit the original mounting position of the stock pump. Still awaiting for this from Demon Tweeks.

The cool thing about this setup is that I can mount the reservoir anywhere and the actual master cylinder itself is much shorter, which will enable me to use my airbox without any further issues (fingers crossed). The hose from the reservoir to the master cylinder will be from Earls fitted with -4 hose ends. Some pics below:

AP master cylinder and reservoir

Reservoir with the cap and fitting for the -4 hose end

Close up of the AP master cylinder. Note the mounting hole for this unit is different to the one I have now ordered.

The other issue with the induction was the injectors. The Jenvey Dynamics fuel rail used a larger diameter O ring (14mm) instead of the standard 12mm version, and although Jenvey send me larger O rings to suit this, our concern was fuel leak especially at high rpm and during hard driving situations. So a new set of injectors were trustfully ordered from Jenvey to suit the application. A set of Bosch 410cc, high impedence and top feed injectors were recommended and this was fitted to SP. I was also told that this are the newer generation of Bosch injectors, which is all plastic and has 4 holes which atomises the fuel much better then the previous design. Anyway here are some pictures of the injectors and the color is not my choice at all. Wish they had a choice for colors!!