Sean Posted July 10, 2013 Share Posted July 10, 2013 Sequential transmission or still the Cat 6 Speed? Agreed on the new dash switches. Definitely seems a car where the Stack dash would be at home on. From the Pistonheads article on this car: Lashings of carbon, seats included, liven up the interior along with fancy (relatively) new switchgear and a sequential gear selector for the Sadev gearbox as used by the R600, a change from the Quaife unit used by the R500. Link to comment Share on other sites More sharing options...
jfgw Posted July 11, 2013 Share Posted July 11, 2013 I will be at the Festival of Speed tomorrow and Saturday and will do my best to get some photo's as well as find out a little more about the packaging and cooling challenges and solutions. Love that video - WANT ONE!!! Link to comment Share on other sites More sharing options...
yellowss7 Posted July 11, 2013 Author Share Posted July 11, 2013 Ask about Left hand drive versions or issues please. Tom Link to comment Share on other sites More sharing options...
jfgw Posted July 11, 2013 Share Posted July 11, 2013 Will do Tom. James Link to comment Share on other sites More sharing options...
blubarisax Posted July 11, 2013 Share Posted July 11, 2013 James, I'd be curious to know if the supercharger would work on a Cosworth Duratec and if they will sell it separately. Have fun! Link to comment Share on other sites More sharing options...
jfgw Posted July 11, 2013 Share Posted July 11, 2013 Yep, I'm keen to know all about retrofitting the supercharger and all the cooling gubbins to a Duratec in the US - at what appears to be low boost, and so that we can use it with 93 octane, are the internals strengthened at all over a normal Duratec or Cosworth sourced one? Hopefully they'll be knowledgeable and happy to talk... Link to comment Share on other sites More sharing options...
blubarisax Posted July 11, 2013 Share Posted July 11, 2013 My Cosworth has forged pistons, rods and crank so that should not be an issue. My 13:1 compression (running 100 octane) would likely have to be changed though. It's not easy to keep one step ahead of Tom and Mike! Link to comment Share on other sites More sharing options...
yellowss7 Posted July 11, 2013 Author Share Posted July 11, 2013 Yeah, you only have 114 hp more than me. :rofl: Croc only has me by a mere 80hp. I'm surprised you guys don't lap me every other lap. :seeya: Tom Link to comment Share on other sites More sharing options...
ExpatKiwi Posted July 11, 2013 Share Posted July 11, 2013 I'm building/getting built more correctly, a Dry Sumped, Honda K20A, Rotrex supercharged 7 (Fraser) with water to air intercooling. I can say is packaging is "challenging" to say the least. Surprising what can be made to fit. Annoying the "oh, this doesn't work" theory - it ended up being completely reverse to what we thought once the engine was slotted in. It's in a RHD car, we mounted the Rotrex underneath the plenum on the LHS and circled through a water to air intercooler ontop of the plenum (dry sumping it got the engine low enough to pull this off). Insanely excited about the prospect of driving it after seeing the 620R video at the ring. We embarked on it a little over a year ago and it's now finally at almost rolling chassis stage. Link to comment Share on other sites More sharing options...
Bonjo2 Posted July 11, 2013 Share Posted July 11, 2013 Looks the same as the r600. Same bodywork, ducting etc.. Must be the same intercooler. http://carsdata.net/searches/Caterham-r600/ Link to comment Share on other sites More sharing options...
Pe7e Posted July 11, 2013 Share Posted July 11, 2013 Ask about... issues please. Tom I think this means, "Is it available in yellow?" Pete Link to comment Share on other sites More sharing options...
Nick OTeen Posted July 13, 2013 Share Posted July 13, 2013 Wonder how they are cooling the air charge? Plate cooler built into the supercharger?Zoom in on the photo of the supercharger in the plexi display case and just ahead of the "C" in Caterham you'll see the water inlet and outlet tubes for the intercooler that is tucked inside the housing. Link to comment Share on other sites More sharing options...
jfgw Posted July 16, 2013 Share Posted July 16, 2013 (edited) Just back from the UK and a couple of days at the Goodwood Festival of Speed. A side note, if anyone is considering attending in the future I could not recommend it highly enough. Standing next to Hans Stuck, Nick Mason, Jacky Ickx with numerous Le Mans Porsche 917's, Auto Union's, Mercedes SLR 300 (#658) etc is almost indescribable, and there are just so many like this... Anyway, back to the point. I had the chance to take a few photo's and talk to Dan (the person who engineered the 620R), and ask a few questions. Photo's I took are here - http://s1209.photobucket.com/user/jfgw/library/Caterham%20at%20Goodwood%20Festival%20of%20Speed%202013?sort=2&page=1 I also have tons of others from the event which I will put in another album and create a separate thread. Info I gathered: The 620R is in an S3 chassis, not an SV. Has only been engineered so far for a RHD chassis - they have not done a LHD one so far. There are some significant challenges with pipework routing which would need some re-engineering. Crank in the 2.0 Duratec is stock but pistons and rods are forged. Compression ratio has been lowered to 9.5:1 by using a different head gasket. Supercharger is Rotrex - believed to be available from them separately, but whole kit is not currently available separately from the entire car. They would not remove the nose cone, but there is a water-based intercooler as well as an oil cooler and the water radiator. The revised vents in the nose greatly aid cooling and so far (based on the race series) they have had no overheating issues. It has been mid to high 80s in the UK recently too. ECU is an MBE unit - different than the R500, mapped for 94/95 RON There may be other info I gathered but can't remember - let me know if you have more questions. I have to say for 50k GBP on the road, the car was just awesome - beautifully finished and apparently Alexander Rossi drove it up the Goodwood hill right after he drove the Caterham F1 car and said F*** that's fast.... high praise indeed. I did watch it go up the hill and even though it was in the Supercar section with various other quick cars, it did appear to be very quick. I WANT ONE!!! James Edited July 16, 2013 by jfgw Additional info Link to comment Share on other sites More sharing options...
Martin H Posted July 17, 2013 Share Posted July 17, 2013 Thanks for the write-up and pictures. I think this may have been the first time a Caterham was "allowed" to run at the FoS. I'm not surprised it looked fast compared to the Supercars - for those that watch it, the R500 had the 4th fastest time on the British Top Gear test track, beating many Ferraris, Porsches etc. and the Bugatti Veyron, so would be very interesting to see what the 620R could do. And the R500 time was done on a very cold day when they could get no heat in the tyres. Link to comment Share on other sites More sharing options...
tomatva Posted July 18, 2013 Share Posted July 18, 2013 See: http://www.youtube.com/user/nurburgdale Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now