Reiver

Mine came with a much tighter gap, I had to open them up to .9... I didn't measure what they were tho.

Thanks... the gap on the TR6 is wide ..., so is the BR7 and I took my info from numerous 7 websites and a builder that recommended the set up I described above for the r400D... it is a wider gap than normal but appears to work very well. Very smooth at idle and just right thru the rpm range. They noted the TR6 having issues at wot. I like a colder plug in Az due to the 91 octane and ambient temps.... I could try a BR6 in the winter (60's and 70's) and the 7's come summer... regardless it does run fine and better than it did with the TR6's for whatever reason..

I noted quite a difference. Going thru the work done on the car the injectors were upgraded and a few other things.... prior guy tracked I suppose. Not sure if that would make a dif but the TR6ap's were not consistent throughout the rpm range. Especially when the lump was up to fully warm (never gets hot), sat for a bit, and was restarted. Slight hesitation at low rpm's for just a short period of time, then fine, like clearing your throat....they only had 3k on them btw. That issue is now gone. Seems stronger thru the rpm scale but that is seat of the pants and could be me. The other issue for me was our gas.... 91 is the highest locally available and I get that 95 RON is our 91.... but we have hot summers and a cooler plug couldn't hurt given the compression figures. I use ACES 4 to raise the numbers and it is a good injector cleaner too.

It is best to do a general internet search for a part or question as other Caterham sources will come up.... search here certainly, but I've had better luck with a general open internet search. Then double check everything you find for veracity.

Yeah, went the same route and had help here...found a WIX filter that replaces the Caterham one.

Doing online searching I found numerous references to plug recommendations for the r400 Duratec...they mostly led back to NGK BR7EFS plugs...the regular copper off the shelf not special plugs. The Caterham provided NGK TR6AP 13 is a more expensive laser platinum plug. So, I tried the BR7's gapped at the recommended r400 mentioned .9mm. Man, I've never really felt a difference in a plug before but this was really noticeable. Nice to have others experiences noted and saved on line. That copper old school was much smoother at lower rpm (especially when fully warm) and great at wot.

That was a similar entry to this hobby...'98 build Vauxhall. Parts can be a pita but I've found shipping from England very good/rather quick ... faster than expected. The prices are a bit but that comes with the territory. The older ones are easier to work on tho, imo, due to the simplified electronics that the newer ones have.

I sent you a msg about the Nitrons you mentioned. I've put over 200 miles on it so far and it seems to drive/handle very well...tight. Yes, he had a lot of mods done and everything works well...it only had 2800 miles on it when I purchased...feels like new.

Took the wife for her first drive in the r400. The lowered floors get a thumbs up from her...sitting deeper and out of the wind. She enjoyed the blat and likes the ride. Now that I've figured out the RTB's (with assistance/KnifeySpoony) it is very docile at low speeds and great at full chat.

Thanks for the input..... you guys did the RTB conversion/dry sump on this car. I purchased it out of Washington State and the records came with it. Once I became familiar with the RTB's, sent a build instruction sheet...I've gotten them synced.

I've found the Toyo's to be very good tires...they seem pretty darn grippy around our round abouts at speed. There are 7 traffic circles between our house and town and all are 4 lane on HWY 93. When there is no traffic they are a good tire check.

Man, I hate salt...you can almost hear the rust forming. Winter is actually our best driving time.. Sept. thru May. I drive in the summer heat too but put the half hood on. I had an '83 911 I owned/worked on a few years back that had always been in the SW...never had a frozen bolt and no rust after 30 plus years.

Took the r400 out for a blat today. 70's/sunny just beautiful. I have this felony speeding route thru the desert where there is little to no traffic and you can see for miles. HWY 60 to Aguila and 71 cross over to 10. The 71 is thru BLM land and there are no houses/stops/cross over roads for miles and miles, desolate.. You can see for 10 miles in places. So, cruising at 90, drop a gear to 5th, and the damn thing jumps ahead like it's in first gear..... hits a ton like nothing. What fun. Pulled off for a pit stop and took a pic.

I see what you mean...

Looks fine but I'd go longer...I want to do away with the ear plugs altogether. Presently hang a set on the rear view mirror. 20/25 inches.... I may repack the original and give that a shot.