Shaun_E

Hence the second part of my post: For emissions purposes only you should treat the following as first used before 1 August 1975: kit cars and amateur-built vehicles first used before 1 August 1998 Wankel rotary-engined vehicles first used before 1 August 1987 Q plated vehicles IVA came in on August 1st 1998 so "amateur built vehicles" first used before 01/08/1998 are treated as first used before 01/08/1975 and are therfore "visible smoke" only.

I second the Therm-a-rest mat idea for sleeping on and, when rolled up, they can usually fit behind the seats as long as you aren't' a tall driver with the seat right back. Any decent sleeping bag will pack small and there is plenty of small, light-weight cooking stuff available. Pack everything in dry bags especially clothes and sleeping bag. A boot bag (e-bag) can massively increase your luggage space. We used to camp for sprints and hill-climbs so we got 2 helmets and race suits in the boot plus tent (3 man Vango tunnel tent), 2 x thermarest, 2 x sleeping bags, 2 x chairs, cooking kit and of course beer and wine. As we are both short we had quite a bit of space behind the seats which helped.

Details are in the on-line MOT manual and

Electrical: I'd start with the coil - if it's the one bolted to the engine block then they get a hard life in a Caterham and I went through about 3 of them before going wasted spark with a remote coil pack. Otherwise the usual rotor arm, distributor cap, leads. Fuel: fuel pump is a possible culprit. I'd been chasing a similar issue for months - swapped all the ignition components out with no success but checked fuel pressure which was fine at idle but dropped rapidly under load. A new pump resolved the issue. TPS is also a possibility.

What thermostat are you using? Most Duratec cars use an 82 deg thermostat and if that's the case on yours, your fan would still be on when the thermostat is closed so definitely too low a range. I can't remember exactly what temp my fan comes on (it's controlled by the ECU) but it's mid/high 90s. My car, as with many Duratecs, is overcooled when ambient temps are low.

We have 2 crotch straps fitted adjusted to the two positions we need - just use the one you need and tuck the other one out of the way

Take a look here: https://www.jenvey.co.uk/throttle-bodies-and-components/fuel-injectors I have the Siemens 630cc/min which are not ideal as they flow way too much. They fit using the Jenvey fuel rail and come with a small spacer to enable that fit. I am thinking of swapping to the 440cc/min ones. I think you can probably use either of the Pico injectors as well - probably best to give Jenvey a call and they can advise. 330cc is probably fine for a stock 420 but do check. My engine is 260bhp and probably needs more flow than that but it's not an exact science!

You'll have the same issue with most aftermarket ECUs - the volumes are too small to warrant writing the code for Windows and Mac. As above, buying a cheap "garage laptop" will be the best answer in the long run. There are plenty of other rolling road tuners that can work with Emerald - try Troy at Northampton motorsport, Steve Greenald at Track and Road or Dave Gemzoe depending on where in the country you are.

A good point from 7 Wonders - if you have the injectors in the TB instead of the stock position, the Bosch green injectors don't fit with a flat filter backplate so you need to buy the shorter pico injectors.

I've got Raceline 48mm TBs on my 260bhp engine. If you aren't looking for more power then maybe 45mm would be fine but speak to them and they can advise. As James said above, you will need a remap.

If you have an update/addition to the bolt list then please email to itsupport@caterhamlotus7.club since the published email above is no longer live. I'll try to get the page updated with the correct address. I'll also try and get it moved to the club website as currently it's hosted on my storage 😮.

Top one is 11" (x 1/2" UNF) according to my bolt list but I don't have the details for the bottom one .

Hi Mike - I’ll have them please. Can come and collect them at some convenient time - no rush.

G4062 works well - I drop the tyre pressure down to 10 or 15 psi as much more than that and it gets messy!. I've seem some recommendations for a vacuum bleed kit but i think they are a lot more expensive.