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The mkiv Supra Owners Club

jagman

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Everything posted by jagman

  1. jagman

    HSD group buy

    Well I would have a set , seems good value and the the set up seems suitably soft , unlike my present set up which is rock hard !!
  2. velocity changes in the most simplistic explanation http://home.earthlink.net/~mmc1919/venturi.html
  3. jagman

    Street lights

    So we need a Hoover Dam somewhere , Scunthorp?? we could name it after Ed Balls and call it the Balls up!
  4. jagman

    Street lights

    As the councils are to shortly switch off the street lighting or dim them , to save money , how are the council workers going to see to put up the xmas lights ??
  5. I want to know how you are going to carry 48 gallons of Retsina ?
  6. Rolls Royce shares lost 1 billion - oops In order to sell the A380 , they offered 100% dispatch warranty , as if there was a technical problem , no other aircraft could be used to carry the passengers , unless 2 or 3 other aircraft used , Airbus will transfer these costs to Rolls Royce I expect ,aint cheap when a flight is cancelled!! the punters want 5 star hotels,gucci clothes,fine dining and compo -even when they paid 99p -cos they are worth it!-lol
  7. yes , heat related ,oil viscosity,expansion,friction, heat cycling of materials etc - smaller engine sizes ,smaller power outputs less heat to contend with .so high rpms possible - smaller engines smaller mass to withhold heat also and bike engines are exposed to the airflow to a degree - less piston mass/con rod mass also helps
  8. jagman

    Jagwah

    Such things occured in victorian times , and so return to this , Union power long since vanished and it is in its death throws - who will you blame then ? - Twinnings tea is moving its plant to Poland - nothing to do with unions but the Polish government paying millions to subsidise this (circa 35k per job) - now ask who owns Twinnings? The "members" of unions are in fact the general public and what is best for them is indeed best for the "company" or "country" -There is no trickle down of wealth !!! only a division that is getting wider IT is is for a huge influx of outsourcing labour as it is cheaper , those who though contracting was going to run forever ,think on ,they now compete with the 3rd world -all driven by the solution of low wages . Whould you consider the minimum wage a living wage ?just how much has it "gone Up", bear in mind housing costs and transport costs,food costs,energy costs and if so just how many people should be on this and should they be on this for life?
  9. jagman

    Jagwah

    The thing is each productive job ,creates 4;1 ratio in other jobs , so in this case another 20,000 jobs not counting the construction of a new plant , Meanwhile Ian Douglas Smith (work and pensions) puts forward a proposal for long term unemployed to be forced into labour - 30 hrs a week or lose all dole payments for 3 months - where is this all going?
  10. "Where do the eco-electric-friendly pushers think the electricity comes from to charge up thier cars" -Hydrogen cells
  11. jagman

    Jagwah

    http://www.bloomberg.com/news/2010-11-06/jaguar-land-rover-to-build-cars-at-new-china-plant-financial-times-says.html
  12. You cant as the other variables remain constant
  13. Each 100 bhp = 73 Kw , 73000 watts of heat !! most goes out the exhaust but its the bit left over in the engine that causes the problem , the heat is generated at 2 points max torque and max rpm ,these overlap and integrate to give the total heat , it is the main destroyer of engines (coupled with det) . Rpm is the main factor , thats why Autobahn use cars have oil coolers ,they are at elevated rpms for long periods ,and the water cooling system is overloaded . F1 cars make great use of ducts for airflow over heat exchangers and increase the efficiency of them . large stresses can be dealt with by material selection but heat kills anything even the finest materials . keeping balance and constant temps in the engine is critical due expansion rates ,out of balance is just as bad as overheating ,hence the warming of engines before they get mullered on the track
  14. OIL,OIL,OIL!, thats is the problem, not long ago UK was a net exporter of oil , now we consume far more than we export ,and its running out /getting more expensive to extract . The Eco Warriors were in fact correct on this front , IF consumption keeps growing and it is ,we are in the shit . Tax is used to push people into more oil saving technology ,I fully expect within 5 years electric cars to dominate over petrol/derv cars , with a growing share of hybrid in between . After xmas petrol is going up 9% , and more due to the recent increase in oil (due QE) Expect $200 a barrel within 2 years and a doubling of both petrol and tax on petrol , At the moment there is no duty on Jet fuel ,if it were taxed as Derv then you trip to Malaga will cost £1500 each person , that is going to happen if consumption keeps climbing ..... For the time being fill up that single turbo car and enjoy every minute .....
  15. I expect he got himself a new Tig welder , just in case ....
  16. The pistons will still melt if they get to melting point! And weaken below this temp , so heat extraction is very important , higher revs mean more explosive combustion events per second , more total heat . So oil and water systems designed to extract it - I think 100 degree max oil temp despite 18000 rpm !! Water flow must be huge !! They must be close to almost constant combustion like an aircraft engine, but with alloy pistons that melt circa 650 degrees,some challenge!! At least we can use water meth!!
  17. Do you have an alarm that disables the ignition and flashes the sidelights /indicators ?
  18. Been at the sharp end of certifying for many years, the whole industry has developed around a full and free reporting system and no blame culture - this has given many positive things and allowed errors to be minimised. This case where manslaughter is charged can only be detrimental : you will end up with engineers pleading the 5 th during interview , no disclosure , no feedback , no progress. So every engineer would be tailed by a lawyer , every report you issue subject to a disclaimer . How do you investigate a wall of silence? Should everyone now carry legal insurance ? The problem is a commercial one , the pressures are commercial and people have to be able to afford to fly. If that is the way forward - fine Ill charge 500000 pounds a year for my signature and legal fees - lol
  19. The Concord crash was a chain of unlucky events , The debris of a DC- 10 was a patch repair on an engine cowl ,common issue with cracks,but this time the repair plate was titanium sheet rather than aluminium , stock problem , The concord was fuelled to max even the crossfeed lines, the concorde has higher than normal take off speeds due wing shape, this loads the tyres more than other aircraft, tyre separated and punctured the tank(uk ones had protective plates) the debris also damaged the wiring ,the engine has reheat , so fuel ignited from the flame benhind the engine,the flight engineer shut the engine down too early -not enough speed to climb or keep the fire behind the engine , any of these and other events could have had a completely different outcome ! The point of a trial is a bit lost really -who/ what is to blame ? it was an accident !!!
  20. No , that's just a longshot , a ride in Veyron would have been more of an epic longshot -lol
  21. Er , how many times would you think they de-ice, or land in Snow, or Fog,rain, in the highly congested, mountainous , airways of Oz?- lol
  22. Toyota spent many millions in development , with Yamaha involved in the head design originally .The close control of heat and its distribution is paramount and they did a great job , so much so you can nearly double the power output without instant failures. They created a masterpiece and aftermarket then rub out the colours and fill in their own , they end up with a Picasso that sort of looks good with squinty eyes but nothing like the original design . Temperature balance between block ,head is fundamental , toyota did the numbers at vast cost , the oilways ,water ways .pressures ,flows - heat distribution --- From combustion chamber , to pistons ,to rings to block and to air , then balance the system between block and head , keeping expansions within limits and heat flows around the head again balanced and within limits . temp sensors up the ying yang , thermal imaging, computer flow analysis and then load and longevity testing IF you are pushing up the power and the heat generated at a minimum follow toyotas lead ,factor an increase in heat from the power generated and increase all the systems pro rata , water flow ,oil flow , etc and keep to their limits - Block temps,CHT , supply oil and water temps and return temps Blocking squirters will totally alter the balance in pressure and flow ,and between head and block ,may work for 10 seconds , but what if you are in a traffic jam on the m25 , then unleash 800 bhp then hit traffic again ..has anyone even measured the block temp versus the head temp versus oil temp - once the oil system absorbs as much as it can (flow dependent) things get hot Everything fails if it gets hot enough ,and weakens way before it melts , oil films and lubrication suffers badly again things fail Step one is to control and closely regulate the water system , without this the oil system has to take the load then regulate and control the oil system , all based on Toyotas initial design. lastly the the air cooling system (undertrays,under bonnet air flow , intakes,vents etc ) - Most aftermarket air cooling just look different (picasso) the stock one works - they tested it !!
  23. You missed my point altogether !! you asked why you would build a car without regard to longevity-because you sell car parts based on results ie as fitted to our 7 second supra....yadda yadda ie you win first and worry later about the bill Ons saving grace of the bigger power cars is that you cant keep your foot in for long periods , you just go too fast !! so the loadings are quite short lived . Value for money wise -there isnt any !! -Walk !!
  24. Win your race , you are not bothered about next week or next year only the guy behind you catching you ! Uprated rads will not increase flow , and without flow heat transfer does not have the same effect .again oil flow is a limiting factor . Block and head temps need to be monitored and balance kept . I will hopefully have more data soon and a fix
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