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  1. M

    This never ceases to amazing me

    In the 90's they were refueling the cars so 6 seconds was considered fast. But here, they could run through the pits as fast as the car could go. Now, the pit stop world record is 1.82 seconds, but pit speed limits have increased the amount of time spent in the pits compared to 90's.
  2. M

    Burning oil, City vs Freeway?

    If you get on the highway, set cruise control to (pick a MPH) and stick with that MPH you are likely to burn less oil. And if that MPH is a sane speed, your engine will run cooler and you will exceed EPA mileage. If, on the other hand, you get on the highway and treat it like a race track...
  3. M

    Is higher oil pressure better for the engine?

    The pressure the oil pump creates just cause oil to flow through the engine. As long as the bearings do not get all of their oil thrown out and become dry, they remain lubricated. Lubrication has to do with oil viscosity not oil pressure.
  4. M

    1998 Endurance Sports Car Racing

    Too bad they chopped up the Mulsanne straight into 3 tiny straights.
  5. M

    Ferrari to Indycar???

    The new budget restriction in F1 will cause Ferrari racing division to have $250M to spend on "other than F1" race endeavors and the F1 budget goes from upwards of $400M/year to $145M next year.
  6. M

    sharp oil pressure drop-off > 130C

    I can tell you that in my 1995 Ferrari F355 that the oil pressure stays at 75-80 PSI on track up to at least 300ºF. This car does have an oil cooler built into the dry sump system. In recent times, I try to stay under 275ºF. But that if I have to pit without a cool off lap, the idle pressure...
  7. M

    Vacuum pumps

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by Local Color</div><div class="ubbcode-body">Not to remove fluids but to reduce crank case pressure - would this be practical for a passenger car?</div></div> It is done all the time in engines with dry sump systems. The...
  8. M

    I don't get the whole "must be low saps" thing..

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by skyactiv</div><div class="ubbcode-body">Most people here only understand what they see in a UOA or VOA and there is additives that wont show up in either. There are high performance anti-wear polymers in low saps oil...
  9. M

    Electric 1400HP Cobra Jet Mustang

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by 4WD</div><div class="ubbcode-body">Well, as you know the serious but funny cars stopped racing a 1/4 mile before they went airborne at 350 mph </div></div> Had more to do with Scott Kalita than airborne-edness.
  10. M

    1991 Indy siren song of the turbo V8s

    In the distant past, stock block rule essentially meant stock heads, too. When unlimited amounts of money get involved, the heads end up racing heads, and the stock block has more displacement, more boost, and thereby higher power. Shame about Mansell.....
  11. M

    Endurance racing in 1960s unbelievably dangerous

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by IMSA_Racing_Fan</div><div class="ubbcode-body">Imagine driving the fiberglass over tube frame Porsche 917 at Spa, Le Mans, Daytona, Sebring, etc at over 200 MPH on the Mulsanne Straight (when it was still straight) in...
  12. M

    Electric 1400HP Cobra Jet Mustang

    The future of DRAG racing is EV. More HP, AWD, instant TQ, ... The future of actual car racing is not EV any time soon.
  13. M

    4Runner and Towing, 0-20 or 0-30?

    I'd think about changing the oil in the transmission after any long tow in a 4Runner.
  14. M

    Race fuel after COVID-19

    I used to get 96 and 104 at about $6.00 per gallon at the race track. But the quantities used per year, of this kind of gasoline, is less than a single refinery's production for a single day (maybe a single afternoon).
  15. M

    NHRA Pro Stock Bearings

    I know of a 10" door slammer that runs 3,000 HP on alcohol and gets a whole season on a single build.
  16. M

    Daytona 500 engine related question

    I remember the WW2 P51D Mustang used the radiators out under the wings in special enclosures as extra thrust, and got a 20 MPH speed advantage from the way these were ducted. The hot air coming out of the ducts was slightly faster than the speed of the plane, generating thrust along the way.
  17. M

    A modest proposal

    The drag race qualification should also be used for the race start. Qualification: Car is walked out to the track and placed at the starting line stopped. When the light goes green (or out) the car accelerates away and is timed for 2 laps. Race start: Cars are walked out and placed in their...
  18. M

    NASCAR racing with no fans next few races...

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by sloinker</div><div class="ubbcode-body">It's interesting, if you read history Formula 1 drivers in the 1960's that competed in the Indy 500 while always turning left would earn more money in that race than they could...
  19. M

    Have we reached the ceiling in improvents to PCMO?

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by Mad_Hatter</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by aquariuscsm</div><div class="ubbcode-body">With the first successful internal combustion engine dating...
  20. M

    Have we reached the ceiling in improvents to PCMO?

    [html]<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted by caprice_2nv</div><div class="ubbcode-body">
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