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Join Date: Nov 2005
Location: San Jose, CA
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.... even with revmatching there is still wear as you can match the rpms to be the same any RPM difference between the engine and transmission causes wear on the clutch. Rev matching on Reduces the wear... also the Newer Bmw's come with a CDV(Clutch delay valve) which slows the engagement of the clutch(basically causes it to slip more on engagement) causeing the clutch to Prematurely wear out(like mine at 120k is now slipping under higher Rpm shifts and launch's such as On Ramps) I have now done the CDV Delete BIG impovement BTW... Use the brakes there is a reason they put them on the car there SOOO much easyer to change(And way cheaper if you paying for Labor)
There is no better proof than long term durability. The E30 in my family didn't need brakes until 160,000 miles, and the clutch is still good at over 180,000 miles (including original throw out bearing). The method of driving this car must be doing something right. That is all.
Rev matching makes wear negligible. And CDV delete ftw.
But what you and I do is much different from what most people consider engine braking. What folks like to do is downshift and just let the clutch out. That forces the clutch and synchros to do most of the work.
The engine's valves work the hardest at higher rpms. If you slow down enough by using the brakes to a point at which you can downshift at matching revs, then downshift, and let the gearing further slow you down until you can rev match and downshift to the next gear, etc., you're golden (what I do, and I gather that is what witeshark does as well). However, popping the clutch and seeing your engine go to 6000 rpm to violently slow you down is not something I recommend.
I donno about you guys but I learned to coast in neutral till I'm almost to a stop then use my brakes for the last bit... 160 is good on brakes round town or highway?
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