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Jonathan Kay

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Everything posted by Jonathan Kay

  1. Jonathan Kay
    What's the model, engine and year? Is the speedometer driven off the gearbox or rear wheel? Guide to Speedometers. Do you have the relevant wiring diagrams? And a multimeter? And if it comes to that it might be repairable: Speedometer and Instrument Repairs. Jonathan
  2. Jonathan Kay
    Only done the brakes. I now use a Gunson Eezibleed and a spare wheel as reservoir on top and a one-way valve at the bottom. And no helper. But I'm interested in those "speed bleeders" that have recently been discussed: Jonathan PS: Why start a new thread? We can't tell what you've found already...
  3. Jonathan Kay
    Thanks Jonathan
  4. Jonathan Kay
    What did you choose? And Before and After photos, please. Jonathan
  5. Jonathan Kay
    Jonathan
  6. Jonathan Kay
    Discussion from 2010: and full search of the archives. Jonathan
  7. Jonathan Kay
    1800 K used on road and (now very occasional) track sessions. Standard cooling system 82°C thermostat (on the advice of RatRace) Sender to the gauge replaced Fan switch replaced, now 95°C Comma G30 coolant Runs at indicated 80°C, and fan brings it smartly back to that when needed But cooler than that when cruising on cold days. I think about blanking off part of the radiator but I haven't got a round tuit. Jonathan
  8. Jonathan Kay
    Previous discussions have converged on this, which appears under several brand names. I can't remember anyone testing for accuracy themselves. But the point has been made that it's consistency that matters, because for track work you'll be using other forms of assessment of what's right. Jonathan
  9. Jonathan Kay
    I'd definitely ditch the foam and fit a holey gasket. (And that's also the case whatever the state of the foam.) IIRC the pick-up unscrews from the underside of the block. I'd take it off in order to be sure that it's decrudded. Jonathan
  10. Jonathan Kay
    I'd try a contact adhesive. Is there enough access to brush that on? How about roughing up the "dusty" surface with a scourer? Jonathan
  11. Jonathan Kay
    It might be repairable: and a recent success with a speedometer at JDO: Jonathan
  12. Jonathan Kay
    You can also test thermostats by dunking them in jugs of hot and cold water. And in situ by feeling hoses. Jonathan PS: I'd be very interested in experiences with remote thermometers and probes on multimeters etc. They could make it much quicker to solve a lot of problems...
  13. Jonathan Kay
    There's a lot on this in the archives. But I can't work out what's relevant because I don't know the significance of it being wet or dry sump... Jonathan
  14. Jonathan Kay
    I'd include relevant relays and the indicator timer/relay in the possibilities. Start by pulling them and looking for evidence of overheating on the relay and the base. Jonathan
  15. Jonathan Kay
    And, because of that important discussion elsewhere about tinnitus: a group test of apps for frequency analysis, but of course much of it is about audio production rather than limits at tracks or protection of hearing. Jonathan
  16. Jonathan Kay
    Same review from 2014 but with updates from 2016 and 2018. The testers have produced their own app for industrial exposure testing: NIOSH Sound Level Meter App. ... NB: iOS only because they found the variability of Android devices to be too high. Jonathan
  17. Jonathan Kay
    Sorry, thought I'd included the link: https://www.smiths-instruments.co.uk/products/sender-units-temperature-senders/ Jonathan
  18. Jonathan Kay
    1158 to 44 Ω, according to Caerbont. Jonathan
  19. Jonathan Kay
    Does the indicated temperature come down as soon as the fan cuts in? Jonathan
  20. Jonathan Kay
    Looks too high to me. Check that the fan comes on reliably by shorting out the switch by hand. Where is the switch? And is the system full of coolant? Jonathan
  21. Jonathan Kay
    Check that all relevant earths are good. Then check again. The fog light probably only comes on with dipped headlamps. The hazard light switch is notorious for internal failure. (A better circuit is available, but I wouldn't change anything until it's working as in the factory diagram.) ... A smartphone can be convenient when looking behind an (unexposed) dash. Jonathan
  22. Jonathan Kay
    1 I have the factory wiring diagrams (and some amendments). Please send me a Private Message with your email address. 2 Caterham usually followed the "standard" British wiring colours. 3 Do you have a multimeter? Jonathan
  23. Jonathan Kay
    Do either of these match your Seven? Jonathan
  24. Jonathan Kay
    I have the most common layouts of fuses and layouts for Duratecs and the factory wiring diagrams. Please send me a Private Message with your email address. Jonathan
  25. Jonathan Kay
    Thankyou for raising this. Many of us call these headrests but of course they're restraints to prevent overextension of the neck in impacts. Sharing solutions sounds smart. Jonathan
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