NecronomiconJules

Hope this answers the question - let me know.

No, sadly. I know it was originally specced with one, but I recall Josh mentioned it fouled the steering column.

Thank you. Union City, California.

I thought I'd give the knowledgeable and discerning folks on this site first dibs. With real reluctance, I’m putting my Caterham CSR up for sale. I’m relocating to Europe shortly, and importing/registering a US Seven there would be a long, expensive, and bureaucratic adventure I’d rather avoid. I am the original owner. The car was built for me, and very solidly built, by Rocky Mountain Caterham from a brand‑new CSR chassis in 2020. The engine and gearbox were sourced separately, per US EPA Kit Car Policy. The goal was simple: create the most agile, communicative and confidence‑inspiring road car possible. No racing, no track days — just pure back‑road performance. Specification Kit • CSR chassis kit in Caterham F1 Green (the pictures don’t do it justice) Engine • Used 2.0 Duratec, reportedly 210 bhp (true output unknown, but the performance supports the figure) Gearbox • Type 9 with Tracspeed semi‑helical gearset (long 1st, close 2–5) Registration • California SB100 (SPCNS) — smog‑exempt, no annual emissions testing, and you skip the usual SPCNS registration gauntlet Upgrades & Setup During My Ownership Cabin • Lowered floors, for 6'4" yours truly ECU & Tuning • MBE 9A4 programmable ECU • Professionally mapped by Steve Greenald (UK), an authority on all things MBE/Easimap Differential • Titan clutch‑type LSD Steering • Titan quick‑ratio rack (2.2 turns) • Custom tie‑rod ends and steering arms by Jack Webb Motorsports to eliminate bump‑steer • Woodward U‑joint for zero play Suspension • Quantum One.Zero coilovers with two‑way adjustment, setup by Jack Webb Motorsports • Upgraded rear clevis & pin set (addresses known CSR weak point) Brakes • CL Brakes RC5 pads up front — excellent modulation and stopping power Lighting • LED headlights (a major improvement over stock H4s) • Reverse light Alignment • Full geometry setup by Custom Alignment, Mountain View, CA What This Car Delivers You end up with a 1290‑lb, ~200‑bhp Caterham built on a Multimatic‑engineered platform — inboard front suspension, the only IRS in Caterham history, and a level of composure that, in my opinion, sets it apart from other Seven expressions. The handling is the CSR’s party trick: poised, unflappable, and absurdly fast across real roads. It shrugs off mid‑corner bumps, stays balanced no matter what you throw at it, and covers challenging terrain at WRC-like pace with unerring ease. Steering is razor‑sharp, richly detailed, and free of slop. The Duratec pulls from 2500 rpm and then charges hard to a 7800 rpm redline with a hint of BDA‑like sonority up top. The upgraded brakes match the chassis: powerful, progressive, confidence‑building. It is, without question, the most nimble, responsive, and sure‑footed road car I’ve owned. And everyone loves it, from 5-year olds to Porsche drivers, even Harley riders give it a thumbs up. The Imperfections (in the spirit of full transparency) • Slow oil seep at the main seal — improved but never fully eliminated. “They all do that, Sir.” • Slight kangarooing at steady-state light throttle around town; disappears above ~30 mph • A few small paint chips; it’s a driven car, not a museum piece Included Extras • Full hood and weather gear • A new set of Avon CR500s (195/45‑15 & 245/40‑15) — likely among the last available • All original parts, except the steering rack and open differential • Various fluids (engine, gearbox, diff, brake, coolant) Asking Price $65.000

Interestingly I bought the same rear "cievis" shock mounts from Team Leos. And yes, Luke is so incommunicado that Jack Webb - I got my Quantum shocks from him - had to place the request on my behalf. I hear what you're saying RE: feel - sounds promising. But lacking visual clue I can see the rabbit hole: what if the uprated master cylinder outlets don't match the stock's; how about a brake proportioning valve? etc. I'd rather try pads first, if only to keep variables contained. Jack was the one who suggested Ferodo DS2500s. If that makes a noticeable difference to the stock AP pads I'll be happy. What are you using on your roadwise 7?

Thanks Mike. I attach what I have - I think it's standard for LHD CSRs. The race master cylinder doesn't seem easy to source. Caterham Parts doesn't list it and Bruce is all out. What is the effect of race vs standard master cylinder?

Fellow Seveners, The subject has probably been argued many times over, please bear with me, I was not able to find it. So this is about upgrading the stock brake pads - AP Racing DS25HP front and Delphi something rear - on my CSR. Nothing wrong with them - I simply want more responsiveness and initial bite. My usage is spirited street/canyon carving, no track or racing. Objectives: work from cold, provide great bite, good modulation, and keep the squealing to a minimum. Talk about squaring the circle. The candidate brands/compounds shortlisted from countless hours trawling UK Caterham forums: - Ferodo DS2500 - Ferodo DS3000 - Pagid RSL2 (f) / RS42 (r) - PFC 01 (f) / 11 (r) Comments and suggestions welcome. Thanks, Eric

I am swapping the open diff on my Caterham for a LSD unit. Does anyone know a reputable diff/transmission shop in the Bay Area? There was a place in Hayward (run by Tyrone as I recall) who did a superb job for me a few years back - but I can't get a hold of him. Hence this. Thanks all.

Report (long overdue). Hasselgren do have a dyno, but an engine one, not a rolling road. And although very well equipped, they are not familiar with EMB ECUs, which is what Caterhams use. I ended up contacting Steve Greenald, a UK engineer who knows everything about these and other ECUs. Steve walked me through collecting engine data points and used them to put together maps that I installed and tested. My engine is running well now.

Resurrecting this topic 3 years on, as there's not much out there on the subject of implementing Tractive on a CSR. 2 questions: - which sping rates do you use? - what type of diff do you have in there? Eric

Thanks. It appears Hasselgren have a dyno (and are well reviewed). I'll get in touch with them and report findings later.

Morning all. My engine - a Duratec 2.0 not sourced from Caterham - needs a tune. The ECU is thankfully an open one. I accessed it from Easimap via a CAN mapping kit yesterday. All good on that front. Now there is a deluge of tuning options in Easimap. I can tell any tinkering on my part will likely make things worse. So: can anyone recommend a good shop, or person, with Duratec knowledge around the greater SF Bay Area? Thanks.

Currently running the stock exhaust system. I think it's shot, so I'm contemplating 2 options: just renew the glasspack system (doesn't require bracketing mods) going custom, i.e. a thinner pipe diameter (hope to lower the sound level but raise the pitch) If you have anything lying around, including ideas, let me know. Thanks.

Thanks all. So, NT01s in good standing so far. Falkens well reviewed too. I liked the Nittos on my late 911 but that was a barge of a thing in comparison - no issue generating heat. Speaking of spring rates: rear grip is so easily defeated that in addition to lower pressure, the alignment shop recommended softer spring rates: 200 front, 160 rear. It does help, just not enough, so back on the subject of tires. Here's a selection that this and other (UK) forums speak favorably of. Keeping in mind that this is primarily for dry street driving, how would we grade them? - Azenis RT615K - Toyo RA1 - Toyo R888/R888r - Advan A048 - Nitto NT01 - Avon ZZR - [you fav tire name here] Eric

Hi all, looking to get new tires for my Ultralite. Note: S2Ks wear larger tire diameter (~ 25 in), thus heavier wheels, than other 7s. I live in California - no need for rain compound - and drive my car exclusively on dry public roads. First time I bought a new set I chose Pirelli Trofeo R in 225/45-17 front, 255/40-17 rear. Rave reviews, allegedly faster (and actually lighter) than R888s or NT01s, etc. Experimenting with pressure I got it down to 17-18 lb/in. Well, it's been strangely disappointing. Grip all too easily overcome at the rear, little feedback from the front, not to mention a couple of snap oversteer episodes in circumstances and at speeds that would not phase my VW Jetta one bit. Not enough heat, perhaps, or sidewall too stiff for the load? What I'm looking for is a set that delivers what I was hoping to find in the Pirellis: great grip, progressiveness & feedback. Ideas? Recommendations? Thanks. Eric