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| Revving the B***S out of it.; Engine revs | |
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| Tweet Topic Started: Sun Aug 23, 2009 8:53 am (1,554 Views) | |
| apb | Sun Aug 23, 2009 8:53 am Post #1 |
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Newbie
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Hi everyone, i drive a 1991 190D and was wondering if it is OK to rev upto 4k when changing gear. There are a lot of hills where i live and to keep up with traffic it seems to work well. I only rev this high when the engine reaches it's normal temp, but is it OK for this engine. It is the 2.0 litre version. We all know how slow they can be! On the motorway at 70 it revs around 3k anyway so i assume they were built well enough to deal with it. Any diesel owners out there who can put my mind at rest. Thanks. |
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| jeremy | Sun Aug 23, 2009 9:57 am Post #2 |
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Too Far Gone To Help
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ALL Mercedes engines , provided they have been properly serviced and oiled , will rev clean up to the red line on your rev counter . 4K should be a walk in the park ...... Jeremy
Edited by jeremy, Sun Aug 23, 2009 9:58 am.
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| apb | Sun Aug 23, 2009 10:35 am Post #3 |
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Thanks Jeremy, maybe it just sounds like it is revving high as my rev counter only goes up to 6k and there is no redline. Still getting used to the car but i enjoy owning it. |
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| shrekky | Sun Aug 23, 2009 10:42 am Post #4 |
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Troll hunter
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red line on a old diesel is 4.5k and yes its ok to rev it to that.............i bounce mine off the limiter all the time .....................and it you want to make more drivable do what i did,and make your own exhaust..............doubt if it increased BHP but boy it is ever nippier . i have a 2.0D and people who have seen it will tell you it aint slow !! ![]() |
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| jeremy | Sun Aug 23, 2009 10:48 am Post #5 |
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Too Far Gone To Help
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Yes , I forgot to add , you cannot over-rev them coz they have a rev-limiter which is always set consevervatively . I have a 2.5-16V , very well maintained , and I rev it to its 7200 rev limiter often .......... Rev-up & enjoy .......!!!!! (& watch your fuel consumtion rocket )jeremy
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| apb | Sun Aug 23, 2009 4:30 pm Post #6 |
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Thanks for the replies! I have never taken it to it's max as it seems to cope quite well so i will just enjoy it. I am interested in the exhaust mods! Would making your own exhaust cause problems at the MOT? How much more umph does it give you? Cheers. |
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| shrekky | Sun Aug 23, 2009 6:23 pm Post #7 |
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Troll hunter
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nope,not as long as you are within the noise limits.......................i have a standard down pipe,but from the first joint its a 2 1/2 inch straight through pipe,and the only silencer is a magnum back box,and mine is well within the noise limit, and it has a real nice burble,and sound nothing like a diesel .............BTW you have to modify the air in take as well ,as this is very restrictive...............remove the trumpet section from the air in take a put a straight pipe in,i used from a citroen xantia ![]() as far as uumph goes,as i said i dont think it actually increases horse power but what it does do,is make the throttle much more responsive and free revving,making the acceleration comparible to a 1.8/2.0 petrol 190 ![]() |
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| chrismatheou | Sun Aug 23, 2009 7:41 pm Post #8 |
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Enthusiastic Bad Boy
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Sean no disrespect but I have a 2.5 Manual with a 3.5inch straight through pipe and the air filter restriction bit is removed and although the speed is adequate and I think its a great car no way does it compare to my 2.0 Auto speed wise! What are you giving your 2.0d to drink?
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| shrekky | Sun Aug 23, 2009 8:09 pm Post #9 |
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Troll hunter
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thats you're problem.......................people think because they have 1 cylinder more that it should be faster...................nope you might have 1 cylinder, 500cc and 20 hp more but the truth of the matter is the extra weight you have as a result of having a extra cylinder far out weighs the gains.heavier springs,bigger heavier brakes,the weight of the extra cylinder......................plus you have ABS ,i dont...and so on............i wouldnt be surprised if your car was 80-100kg heavier than mine.................i dont even have a rev counter FFS !! plus i fitted a diff from a 2.0 petrol car,so that might have something to do with it as well |
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| chrismatheou | Sun Aug 23, 2009 9:09 pm Post #10 |
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Enthusiastic Bad Boy
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Mate after this thread 'The Gorilla' started a few weeks back I reckon that 2.0 petrol diff is the one which has given your car a proper edge.
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| shrekky | Sun Aug 23, 2009 9:16 pm Post #11 |
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Troll hunter
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i wont deny it probably added to it...................but it isnt solely responsible for it ,as i had felt a considerable difference before i swapped the diffs out |
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| chrismatheou | Sun Aug 23, 2009 9:23 pm Post #12 |
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Enthusiastic Bad Boy
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I see, I would never know as I bought mine this way ![]() So Sean what we going to do so we can give all these petrol owners a run for there money? ![]() Is a couple of the first rhd turbo diesels on the site on the cards? |
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| shrekky | Sun Aug 23, 2009 10:14 pm Post #13 |
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Troll hunter
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already working on that got a turbo and intercooler to go on...................just need to find someone near me that can make me a custom exhaust manifold because not ever having converted a car to turbo before,havent got a clue about the exhaust manifold...........you know ,what sizwe pipes to use, the angle to have them at,that sort of thing Edited by shrekky, Sun Aug 23, 2009 10:14 pm.
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| Richy190E | Mon Aug 24, 2009 12:35 am Post #14 |
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bubble bubble
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Supercharge it
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| apb | Mon Aug 24, 2009 4:16 pm Post #15 |
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Newbie
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Would you notice much difference just modifying the air intake. Would it burn less fuel by breathing better? It looks like it would be the least expensive and easiest thing to start with. As soon as i say easy it becomes a nightmare! |
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| shrekky | Mon Aug 24, 2009 5:06 pm Post #16 |
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Troll hunter
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not without doing the exhaust as well,its to restictive-wont allow the gases out fast enough |
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| stwat | Mon Aug 24, 2009 5:08 pm Post #17 |
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I'm sure i have read that adding LPG to the system gives a healthy power boost to diesels. Is that correct? A quick search came up with this. LINK Rather expensive to fit i'm sure but interesting all the same. Edited by stwat, Mon Aug 24, 2009 5:16 pm.
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| shrekky | Mon Aug 24, 2009 5:32 pm Post #18 |
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Troll hunter
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some pretty outrageous claims there stu |
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| Richy190E | Mon Aug 24, 2009 8:16 pm Post #19 |
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bubble bubble
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A friend of a friend had an Astra G running DervGas and it was bonkers, completely night and day conversion. |
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.....................and it you want to make more drivable do what i did,and make your own exhaust..............doubt if it increased BHP but boy it is ever nippier
. i have a 2.0D and people who have seen it will tell you it aint slow !!
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.............BTW you have to modify the air in take as well ,as this is very restrictive...............remove the trumpet section from the air in take a put a straight pipe in,i used from a citroen xantia
started a few weeks back I reckon that 2.0 petrol diff is the one which has given your car a proper edge.


9:17 AM Jul 11