 | Home > Puma (Tdci) > Vibration with hard throttle in 6th |
 
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| T1G UP Member Since: 08 Dec 2009 Location: Bath Posts: 3101   
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i'm with you on that one! To low revs for the gear! 1500-2200 max boost at those revs so max torque and it's struggling to pull it! You lot invent half the problems  |
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8th Dec 2011 9:49am |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731  
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Exactly! I have an Alive remap on my 110 SW and the first "untamed" version caused heavy juddering between 1750 and 2250 rpm in 5th and 6th and only when putting my foot down. Also only with the remap. Gary at Alive seems to think it's from increased torque, possibly to do with the front prop vibrating - capping the torque in those problem areas seems to be the solution (sorry Gary if I'm talking boll*cks  )
He has been incredibly (!) patient with me and we almost have it sorted. Truck is now very usable and has plenty of smooth power all the way up. Just a little judder through 2000 rpm in 5th and in 6th from 1500 to 2100 rpm when pulling (and yes, sometimes I do drive uphill on the Autobahn in 6th at these rpm). I am very confident  Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing... |
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8th Dec 2011 11:23am |
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| borderterrier Member Since: 09 Dec 2011 Location: Surrey Posts: 1677  
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I have the cause of this!
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4th Dec 2013 8:26pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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That would be very interesting
A long time since my last post and I have ended up with the Version 2 BAS remap on my 110 (long story) - the juddering is hardly noticeable even on the "untamed" map, as the power/torque distribution is already very refined. That being said - what's the cause? Tell someone you love them today because life is short. But shout it at them in German because life is also terrifying and confusing... |
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4th Dec 2013 9:17pm |
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| Cheshire110 Member Since: 26 Jul 2013 Location: Cheshire/London Posts: 2751
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despite being noisy and having lots of low end torque, the tdci lump does need to be worked IMO
defenders already have chocolate drivetrains, don't make it worse by using 6th less than 2000/2200. that feeling of almost stalling destroys clutches in all cars, especially defenders. after needing a new clutch Im now keen to keep it going 
mpg and engine life are actually better if you stay in the right gear, its not just about keeping RPM down... Cheers, David Land Rovers of all shapes S3 onwards… Daily is a 110 V8. |
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4th Dec 2013 9:24pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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Agreed but shaking in 4th at 2000 rpm (not lower or higher) just ain't right... Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing... |
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4th Dec 2013 10:28pm |
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| Cheshire110 Member Since: 26 Jul 2013 Location: Cheshire/London Posts: 2751
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Hmm yeah..
Any rattling at tickover with clutch engaged? (Pedal up) Cheers, David Land Rovers of all shapes S3 onwards… Daily is a 110 V8. |
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4th Dec 2013 10:33pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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No rattling but slowly getting noisier though
Still 6 months guarantee - not sure if I want the clutch to go before then or not... Tell someone you love them today because life is short. But shout it at them in German because life is also terrifying and confusing... |
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4th Dec 2013 10:35pm |
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| borderterrier Member Since: 09 Dec 2011 Location: Surrey Posts: 1677
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Sorry been busy. Intercooler hose fouling steering shaft. Under boost the turbo spools up and vibration is transmitted to, and amplified by the steering. |
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6th Dec 2013 7:03pm |
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| ZeDefender Member Since: 15 Sep 2011 Location: Munich Posts: 4731
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Cheers - that's one I'll check out tomorrow - too sodding cold to get the torch out now
But might it be different with LHD? ...Oi need to learn me sum anatomee  Tell someone you love them today because life is short.
But shout it at them in German because life is also terrifying and confusing... |
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6th Dec 2013 7:51pm |
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| SteveS Member Since: 05 Oct 2010 Location: Devon & Berkshire Posts: 388 
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In a tall gear and putting foot down will put the full engine torque on the drive train. With a remap you are probably getting a 25 or 30% increase in torque putting even more twisting action into the mechanicals. Anything that is loose, badly worn or out of balance in the drive train will cause vibration. U/Js etc. I have had it on other cars where wheel balance was brought into question under high torque conditions - despite my disbelief it was resolved once balanced.
Peak torque is at the rev ranges reported. You could try removing either the front or rear prop, locking the centre diff and going out for a run - that will help you eliminate or prove which end of the truck is causing/not causing it |
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7th Dec 2013 2:02pm |
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| Porny Site Sponsor Member Since: 31 Aug 2009 Location: Sutton Coldfield - West Midlands Posts: 809 
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200bhp/560nm and no vibration issues in any gear.....
with a standard drivetrain. This is from 1500rpm upwards... infact even from about 1300rpm....
Ian IRB The home of the first modified Keswick Green 90 - and the first 2.4 Puma through both the 200bhp and 550Nm barriers. www.IRBdevelopments.com www.facebook.com/irbdevelopments www.integrated316.com www.facebook.com/integrated316 Last edited by Porny on 10th Dec 2013 3:12pm. Edited 3 times in total |
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9th Dec 2013 7:26pm |
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| bell-auto-services Member Since: 08 Jul 2007 Location: North Yorkshire Posts: 2232 
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Some people in the past do tend to get used to the good extra torque and start driving a little "lazy" in 6th , polite note to all. Make sure you use the gearbox and revs for what they are designed for and it won't happen in most cases.
Allow it to rev more in gears before selecting the next, and select the correct gear for the traveling speed and torque vibration won't generally happen. Of course cars with bad clutches, warn prop joints, dodgy diffs etc or lifted suspension can cause the same effect as well as an array of other mechanical faults. My 110xs 2.2 with the same power Ian's 2.4 90 does not do it at its 200bhp and 560nm but I do allow it to rev in gears more than most and don't select 5th or 6th at a to low speed and so do not induce it. That said not sure how long the box will last with that amount of torque going through it lol as they do in places inside them seem to be made of toffee when we stripped one a few months ago for some internal upgrades we are on with
Regards Pete. Last edited by bell-auto-services on 9th Dec 2013 10:12pm. Edited 12 times in total |
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9th Dec 2013 9:33pm |
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| bell-auto-services Member Since: 08 Jul 2007 Location: North Yorkshire Posts: 2232
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I had a car like this a couple or years ago, typically it was by pure fluke I found the exact same thing. I've also had a few with water in the fuel or contaminated fuel causing some very weird problems from knocking and tapping to vibrations on engine revving when under load. Pete. |
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9th Dec 2013 9:57pm |
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