XPost: alt.home.repair   
   From: jkj33@gmail.com   
      
   On Fri, 04 Mar 2022 17:19:58 +1100, Xeno  wrote:   
      
   > On 4/3/2022 9:51 am, Jacob Jones wrote:   
   >> On Fri, 04 Mar 2022 09:37:46 +1100, Bob F  wrote:   
   >>   
   >>> On 3/3/2022 12:59 PM, Jacob Jones wrote:   
   >>>> On Fri, 04 Mar 2022 07:49:46 +1100, Bob F  wrote:   
   >>>>   
   >>>>> On 3/3/2022 12:03 PM, micky wrote:   
   >>>>>> In alt.home.repair, on Thu, 3 Mar 2022 12:47:28 -0600, Paul in   
   >>>>>> Houston   
   >>>>>> TX  wrote:   
   >>>>>>   
   >>>>>>> micky wrote:   
   >>>>>>>> Is red-lining worse, better, or the same when the engine is   
   >>>>>>>> driving the   
   >>>>>>>> wheels as when the wheels are driving the engine?   
   >>>>>>>>   
   >>>>>>>> I use the engine to slow down when going down hill, and today, for   
   >>>>>>>> example, I put the ATransmission into 2nd and then engine went   
   >>>>>>>> briefly   
   >>>>>>>> to 5500, the apparent red line.   For several seconds was at 5000   
   >>>>>>>> and   
   >>>>>>>> even longer at 4500.   
   >>>>>>>   
   >>>>>>> I did that exiting the freeway in my last Toyota.   
   >>>>>>> It sucked a valve into the combustion chamber and broke a piston   
   >>>>>>> rod   
   >>>>>>> destroying the engine.  I gave it away to a needy person who   
   >>>>>>> installed a   
   >>>>>>> used engine and ended up with a nice car.   
   >>>>>>  So you're suggesting I shouldn't do it?   
   >>>>>>  Unless your freeway was going very steeply down hill, I would   
   >>>>>> think you   
   >>>>>> came close to the redline even less time than I have!!   
   >>>>>>  This is a 2021 or 2022 Citroen C-3.  A rental with only 9000 miles   
   >>>>>> on   
   >>>>>> it, so it must be new.   I think I bought the insurance, but   
   >>>>>> regardless,   
   >>>>>> I don't want to hurt the car.    mAYBE I shouldnt go lower than 3rd   
   >>>>>> gear   
   >>>>>> and rely on the brakes for anything more.   
   >>>>>   
   >>>>> A motorcycle shop owner heard me downshift to slow as I approached   
   >>>>> his lot, and immediately told me that brakes were a lot cheaper to   
   >>>>> replace than engine and clutch.   
   >>>>  Rather a silly comment if you end up crashing because the brakes   
   >>>> overheat and you can't stop.   
   >>   
   >>> He was right.   
   >>  No he was not when you change down before there will be any red lining.   
   >>   
   >>> Reving to high speeds to slow down can quickly damage your  engine.   
   >>  But changing down so you don't redline doesnt.   
   >>   
   >>> That should not be general practice if you care about your  vehicle.   
   >>  That's wrong too. Doing it properly does produce less brake wear.   
   >   
   > So does driving that saves wear and tear on both brakes and clutch. If a   
   > driver has a need to brake hard, either way, maybe it's time to re-learn   
   > how to drive.   
      
   We aren't talking about braking hard, we are talking how to descend steep   
   hills.   
      
   >>> If your brakes fail on a steep hill, OK. But doing that rather than   
   >>> keeping your speed below the over-rev point going down hills is just   
   >>> stupid. Use your brakes for exiting the freeway, definitely better   
   >>> than over-reving.   
   >>  But perfectly possible to not over rev in that situation.   
   >   
      
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