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Thread: Whats it safe to rev up to on a 1.9 diesel?

  
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    davey_g's Avatar
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    Whats it safe to rev up to on a 1.9 diesel?

    Hi guys, i have a Mk5 astra sri 1.9 150 diesel and i was wondering (strange i know) but what is it safe to rev up to on the car? i mean, i know its got a redline, but surely my tractor engine can be liking it that much?.....i got a habit of playing it safe and keeping below 3000rpm but im probably just cokeing it up! what are your thoughts?
    Davey g

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    i spose the rev limiter is the safe limit. Otherwise it would be lower! than what it is now to make it safe, if you get were i'm going with this!
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    The power dies off after about 4000rpm anyway so it's pointless going above that in any gear

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    the redline could be said to be safe but i wouldnt rev my car to it everytime, if your going for it a bit then the best place to rev to is where the power drops off then change gear but for normal every day driving 2.5 to 3 k is ok

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    yeah true true.....i guess if the power runs out before the rev limiter whats the point!.....lol

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    The torque does drop off, but unless it's a very narrow torque band and a very close ratio gearbox, you'll always have more torque at the wheels in a lower gear.
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    My remapped one had the limiter at 5200rpm, and she pulled hard all the way. Though it was a little James Bond style smoke screen at those revs.
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    Diesels rev to the limiter no problem, they're not like petrols where damage is done at the limiter after some time. My dad pretty much redlined his old focus every gear for 100k miles and it was fine.

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