Wednesday 28 August 2013

Day 7 & 8 (Full days)

Progress seems to have slowed a bit over the last couple of days despite me actively working on the car pretty solidly. In part this was down to waiting on a couple of missing parts to arrive from Caterham which turned up today (thanks Derek) but also because I've had to spend a fair while on the forums seeking some advice on how to complete the routing of the various pipes that make up the overall cooling/heating system. With everyone back at work (apart from me - ha ha), I've been the only 1 taking a vested interest in the car. well almost....

Not the best at car mechanics

My main aim over the last 2 days has therefore been to finish off the cooling system but also do a few of the odd jobs that I'd not got round to doing in and around the engine bay.

Cooling System & Heater

I'd already got as far as fitting the top hose to the radiator which was very straightforward. Next it was on to the bottom radiator hose and the routing necessary to take it to where it connects to the head just behind the water pump. The rest of the hoses were far more confusing and its clear that the pipes supplied and what you need to do with them have changed quite significantly since the Assembly Guide was last published back in May 2012!!! (Edit - a recent owner currently sent me the lastest version dated Dec 2012 - it still doesnt have routing for this particular variant in it though) Rather than hash out all of the things that I found wrong with the guide, here is a general summary of the main things you need to bare in mind. Look at the guidance in tandem with the diagram I've now put together of how it should all be routed and hopefully it will all start to make sense:

  1. The oil breather pipe should loosely connect into an oil breather bottle (mine was missing and turned up today courtesy of Derek). You do need to drill holes into your pride and joy to fit the bracket it comes with. Its the same style as that used for the water bottle which you will likely have fitted by this point. Use the rivet gun to fix to the chassis and route the breather pipe into the top of it
  2. The SuperSport R has an oil cooler (Modine) which is not mentioned in the manual, you have to accommodate for this by routing the coolant system to the modine. Hot water goes to the heater first and then onto the Modine before coming back around the system again
  3. The wiring up of the heater valve is pretty well explained in the manual as its obviously not changed in years so thats worth looking at
  4. In order to provide water temperature readings, a water temp sensor is supplied and exits from part of the wiring loom round the back of the engine by the water rail. This fits into a 'submarine T-piece' made out of brass which has space in it to fit the temp sensor. This fits in-line within the J-hose which you have to cut in order to fit it in. The coolant system then continues on to the heater system. This Submarine T-piece doesn't get mentioned in the guide.
  5. You might need some more pipes from Caterham. I needed 2 small L shaped hoses to connect to the Modine. I only had 1 in the kit, Derek at the factory kindly sent me another couple
  6. (Edit 30/8/13) Where the temp sensor is fitted to the submarine pipe there will also be a black and black/yellow wire connected into a spade terminal. There is a special spade to ring terminal connector that you will need to use to mount this to the pipe. I didn't have one of these in the kit and neither did a fellow SuperSport owner but Derek kindly sent one of those out in the post to me

So on the advice of some kind forum members, here is how I have routed all of the pipes and wired it all up. Hopefully its right and the diagrams and photos help someone when the time comes for them to repeat this part of the build:

Routing of Top Radiator Hose (Oil Breather Bottle missing)

J-Hose leading to Submarine T Piece

T Piece with attached Temp Sensor

Making up hose attachments to Heater Control Valve

Heater all plumbed in

Looking down at Modine (Note 2 x small L shaped hoses)

T Piece next to washer bottle

Throttle linkage

I then moved onto connecting up the throttle linkage to the accelerator pedal. Nothing very complicated about how it goes together and the manual is pretty clear at this point. Things I feel worthy of a mention though are:
  1. The cable is basically too long. I had to bend the hell out of the accelerator pedal at the top in order to take up the slack of the cable. I was a bit worried about how much I had to bend it but apparently its pretty standard.
  2. The throttle cable needs to route round the front of the engine. Cable tie it so it can't flap about
  3. The bit of the cable that attaches into the pedal (it will be clear when you look at it) was in my case a little bit big to fit into the required hole. I filed a tiny bit off the end so it would go in
Bending the pedal using a jack handle

I also went and completed a job that I'd not finished since the engine and gearbox had gone in. The propshaft was still hanging loose in the transmission tunnel so, having dug out the bolts, I started trying to fit and tighten them up from the top of transmission tunnel. I could do them up but trying to get the torque wrench on was a problem from here. In the end I went under the car and got a long extension bar out and managed to do it from there more easily. Remember to put the car in gear before you start to torque up the bolts else the propshaft will spin around on you!

I then went back to fit the oil breather bracket and bottle which arrived at lunch time today in the post. Managed to snap a drill bit whilst trying to drill some of the holes in the chassis but otherwise pretty plain sailing. I added some washers to the back of the bracket before riveting it in place so as it wouldn't foul the existing rivets that are already protruding from the car slightly. And this is how she looks this evening. Starting to look like a real car already. Tomorrow its on to the rear axle and the suspension.

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