Nigelw Posted January 16, 2016 Share Posted January 16, 2016 meuote name="JeffR" post="842516" timestamp="1452963068"] My god Dave, ya getting mellow in your old age! Been told by a (former) client that perhaps it is time I "toned down my attitude" - well that's English Nature of the Christmas card list. I regularly get asked why can't I be more "normal"? Long and short answer #### off and annoy someone who gives a #### about your opinion, my boss finds my attitude amusing, he is tolerant but by the same token, I know the boundaries, but he knows he too is fair game when stupidity falls from his mouth, they learned the hard way to simply ask my opinion before asking stupid questions clients need more diplomacy before but they too know from watching me fly off the handle that my fuse is short and my temper vile! Back on topic, where is Perv? What's his next step? Quote Link to comment Share on other sites More sharing options...
Landy-Novice Posted January 23, 2016 Share Posted January 23, 2016 anyone tried these? http://www.ebay.co.uk/itm/DIGIBOOSTER-S-STANDALONE-VNT-TURBO-CONTROLLER-DIRECTLY-CONTROLS-THE-TURBO-/181990413698?hash=item2a5f795582:g:69UAAOSwZG9WllLX Quote Link to comment Share on other sites More sharing options...
Ex Member Posted January 24, 2016 Share Posted January 24, 2016 anyone tried these? http://www.ebay.co.uk/itm/DIGIBOOSTER-S-STANDALONE-VNT-TURBO-CONTROLLER-DIRECTLY-CONTROLS-THE-TURBO-/181990413698?hash=item2a5f795582:g:69UAAOSwZG9WllLX As I read it, it is not doing anything more than the mechanical boost diaphragm that comes stock with a VNT kit. A real controller would need to know the throttle position, only closing the vanes at high throttle. Quote Link to comment Share on other sites More sharing options...
Landy-Novice Posted January 24, 2016 Share Posted January 24, 2016 yes, it sets min to max boost. which can make it easy to fit and control vnt with out spenig £1200 on a kit. unless you know what actuator they use on them? Quote Link to comment Share on other sites More sharing options...
Snagger Posted January 26, 2016 Share Posted January 26, 2016 I'm no expert, but I can't see why an ECU is required for VNT. Surely the vanes would default to fine, coarsening as as boost pressure rises to remain within max boost, with the waste gate opening as the vanes run out of control movement? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted January 26, 2016 Share Posted January 26, 2016 There is no waste gate in my understanding of a VNT. Quote Link to comment Share on other sites More sharing options...
Ex Member Posted January 26, 2016 Share Posted January 26, 2016 I'm no expert, but I can't see why an ECU is required for VNT. Surely the vanes would default to fine, coarsening as as boost pressure rises to remain within max boost, with the waste gate opening as the vanes run out of control movement? A "proper" ecu control would leave the vanes open except when you are needing high boost. This makes the engine run more efficiently and improves mileage during normal part throttle operation. That is how a "normal" ECU controlled engine runs a VNT. With the mechanical control the vanes are normally closed and only open when the boost reaches peak. There is no wastegate on a VNT turbo. Just adjustment of the inlet vanes to the turbine. Quote Link to comment Share on other sites More sharing options...
oddballrovers Posted January 26, 2016 Share Posted January 26, 2016 Hi I have been following this tread and it got curious so I started to google and found this http://ofgear.dk/userguide/boostcontrol.html He has made gearbox controller for the Merc box's but it can also control boost, some one must have made the same for just boost using the Arduino Cheers Ole Quote Link to comment Share on other sites More sharing options...
lo-fi Posted January 26, 2016 Share Posted January 26, 2016 I think someone posted this a while back: http://dmn.kuulalaakeri.org/vnt-lda/ Which looks to be going the right way about it. I suspect you could make a VNT work using a simple mechanical actuator, but I very much doubt you'd get the most of it. Quote Link to comment Share on other sites More sharing options...
oddballrovers Posted January 26, 2016 Share Posted January 26, 2016 ofgear's solution uses bot map, egp, tps and rpm in order to control the vanes and he uses the std actuator worked by vacum, I do not know if that make s a difference Ole Quote Link to comment Share on other sites More sharing options...
landroversforever Posted January 26, 2016 Share Posted January 26, 2016 I didn't think to mention Ole (another one ) controller. It's what I'll be using for my gearbox and probably the VGT as well on my OM606 conversion. Quote Link to comment Share on other sites More sharing options...
oddballrovers Posted January 26, 2016 Share Posted January 26, 2016 That's gona be good, that paddle shift and the autobox combined with the VNT thats included in his controller is a very good combo though a bit pricey but on the other hand it is plug and play. Ole Quote Link to comment Share on other sites More sharing options...
landroversforever Posted January 26, 2016 Share Posted January 26, 2016 The turbo isn't included, only the controller part that's built into the controller. Should make for a nice drive hopefully . I was lucky to find a new unused controller second hand on the D44 forum. Quote Link to comment Share on other sites More sharing options...
Ex Member Posted January 26, 2016 Share Posted January 26, 2016 unless you know what actuator they use on them? It is just a regular wastegate actuator as used on any normal pressure actuated wastegate turbo. Like this: http://www.ebay.com/itm/Universal-Turbo-Internal-Wastegate-Actuator-RB20-15-PSI-TO-32-PSI-/380608725807 You would measure what you need for your turbo and find something to fit. Quote Link to comment Share on other sites More sharing options...
matfield Posted February 8, 2016 Share Posted February 8, 2016 Ok... my 200tdi 110 has had a VGT turbo fitted for almost 10 months now, so I'll give you my 10p. The difference in drivability is remarkable. It turned what was a 23 yr old engine into something that drove with all the power and width of power of a much more modern engine. It didn't make much difference to the power output of the engine, more to the useable power, and the ability to use the full gearing. I have a 1.2 tbox, standard diffs and 265/75 bfg AT's, full length roof rack, so the weight isn't exactly small. I'm also running a full width intercooler and one of those boost pins. The boost pin made a difference, but more of a difference was made from adjusting the pump to take advantage of all that early boost, and ability to almost eliminate black smoke below 2000rpm, while having the same torque that was available above 2000rpm. Between the VGT, intercooler, and pump adjustment It is very drivable, and EGT's are all within very safe limits. With regards to the pump adjustments, I spent a long time trying to get the widest power band possible, and in my experience, the boost pin, with minimal resistance on the star wheel spring, and a very small increase in the max fuel screw gave by far the best results with the VGT turbo. Hope that helps. Mat Quote Link to comment Share on other sites More sharing options...
reb78 Posted February 9, 2016 Share Posted February 9, 2016 This may be a silly question, but whats the difference between vgt and vnt? Bell do a vgt turbo off the shelf that looks like it is actuator controlled https://secure.bellautoservices.co.uk/store/defender-200tdi-vgt-hybrid-turbo/ Cheaper than the ebay vnt Nigel linked to earlier! Quote Link to comment Share on other sites More sharing options...
matfield Posted February 9, 2016 Share Posted February 9, 2016 VGT: variable geometry turbo VNT: variable nozzle turbo No difference, just a different name for the same thing Quote Link to comment Share on other sites More sharing options...
Ex Member Posted February 9, 2016 Share Posted February 9, 2016 This may be a silly question, but whats the difference between vgt and vnt? Bell do a vgt turbo off the shelf that looks like it is actuator controlled https://secure.bellautoservices.co.uk/store/defender-200tdi-vgt-hybrid-turbo/ Cheaper than the ebay vnt Nigel linked to earlier! Also... Everyone is selling the same TurboTechnics turbo. The one Nigel linked to is the one from the 2.8. Bell auto Allisport You get the idea.... Quote Link to comment Share on other sites More sharing options...
Landy-Novice Posted February 9, 2016 Share Posted February 9, 2016 all made by turbo technics but stock disabustion is controlled by i believe Ian at IRB. Quote Link to comment Share on other sites More sharing options...
reb78 Posted February 9, 2016 Share Posted February 9, 2016 all made by turbo technics but stock disabustion is controlled by i believe Ian at IRB. Great. His uncontactable nature will really make for a steady market supply then! Quote Link to comment Share on other sites More sharing options...
reb78 Posted February 9, 2016 Share Posted February 9, 2016 Also... Everyone is selling the same TurboTechnics turbo. The one Nigel linked to is the one from the 2.8. Bell auto Allisport You get the idea.... Presumably these work without electrics though? Does this mean there is a compromise? Don't work as well? Or someone's found a way around the control for our 'simple' Tdi's?Also, what's the curved pipe for? That unit looks like it would fit my tdi without that pipe? Quote Link to comment Share on other sites More sharing options...
Ex Member Posted February 10, 2016 Share Posted February 10, 2016 They do not use electrics. The vanes are directly boost controlled with a wastegate actuator just like they all are for mechanical diesels. The photos above are the 200TDI kit and the bent pipe is the exhaust. Quote Link to comment Share on other sites More sharing options...
Ex Member Posted February 10, 2016 Share Posted February 10, 2016 disabustion ?? Quote Link to comment Share on other sites More sharing options...
steve b Posted February 10, 2016 Share Posted February 10, 2016 in context ....distribution Steveb 1 Quote Link to comment Share on other sites More sharing options...
vulcan bomber Posted February 10, 2016 Share Posted February 10, 2016 Presumably these work without electrics though? Does this mean there is a compromise? Don't work as well? Or someone's found a way around the control for our 'simple' Tdi's? Also, what's the curved pipe for? That unit looks like it would fit my tdi without that pipe? Boost controlling a VNT means in low/medium boost situations such as motorway cruising the vanes won't open all the way causing an unwanted obstruction in the exhaust reducing engine efficiency.. You can get combined boost and vac actuators but there not much better.. We'll be making a stand alone brain for ours if we ever get around to it. Quote Link to comment Share on other sites More sharing options...
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