I had my 1.8K Caterham mapped today

[Grubbster]

Quite pleased with the result

[ewenm]

Nice. What's the spec?

[Grubbster]

Originally was a 1.8 VVC, but it's been tinkered with . . .

1.8 Scholar block
Steel crank
Steel rods
Forged pistons
Ported VVC head with oversized valves, colisbro bronze guides
Piper 1227 cams, double valve springs, solid followers
Vernier cam pulleys
Jenvey direct to head TBs 90mm trumpets ITG filter
Converted to HT coil pack with Magnecor HT leads
R500 steel flywheel and AP clutch
Emerald ECU
Dry sump

This is a link to a video of it on the rollers earlier today https://www.dropbox.com/s/59h5bzcibjy5h1u/Video%20...

It was built years ago (and has been rebuilt since!), the reason for the re-map was because I've changed to a different exhaust (now a 4-1 big bore Raceco) and this affected the way it ran.

[ajroberts]

Just what I am about to start on my VVC.
What order would you do it in now? and how much did it cost if you know?

[Grubbster]

I don't know what this would cost now as I bought this engine already modified, but if you want to spread the cost and do things in stages (which is what I started to do with my previous engine) then there are some expensive chunks that need sorting and can be done without removing the head - you need to sort out breathing first (so throttle bodies and decent exhaust) and you need a means to change the mapping (Emerald being a fairly well proven path). So sort these 3 out first, fit slightly better cams and vernier pulleys and this would make a great upgrade with more to come later (porting and valves etc). Something like DVA's K06 kit (http://www.dvapower.com/) would be a great start. As you start to go up in power it gets a more expensive - you need porting, big valves, forged pistons, rods, double valve springs, potentially uprated injectors and fuel pump and of course an engine rebuild to fit it all!

And whatever you do don't forget to factor in the mapping costs as well.

Or - as many will tell you it is cheaper to sell the car and buy a more powerful one! Not an option for me as I built this car 11 years ago, have upgraded most of it and have no wish to sell it yet!

[ewenm]

Good info thanks. I've got at 1.8K VVC (160) at the moment with a Powerspeed 4-2-1 exhaust fitted and a set of RBTBs waiting to go. Can't justify it right now as I barely drive it but it's good to see options.