rz1c13

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rz1c13 last won the day on September 1 2017

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About rz1c13

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  • First Name
    Robert

Profile Information

  • Lexus Model
    LS 430
  • Year of Lexus
    2004
  • UK/Ireland Location
    Essex
  1. For example, here you can buy a whole fleet from Toyota, already gassed... http://www.toyotadobrygowski.pl/flota/sprawdz-ile-zaoszczedzisz-na-lpg.html
  2. Well, I can only talk about Poland. LPG there is very popular, so much that the dealers (not only Lexus, but many other brands) team up with solid and trustworthy LPG installers. The result is that you walk in to buy a brand new, say Toyota, Mazda or Lexus, and tell them to deliver it with an LPG - and there you have it. Doesn't affect your rights, warranty, insurance, etc.
  3. Possibly you meant Prins ? Anyway, mine at the time was the latest BRC Sequent Plug&Drive, installed in Poland (Warsaw) , under Lexus main dealer approved workshop. Details here:
  4. +1, oh yes! I converted mine last summer (June), and already 5k+ miles on LPG. On the 8th of Jan. did a 2000km road trip from east of Poland -> Colchester. I'm not a speed junkie, but do drive fast, Polish motorways limit is 140km/h (about 90mph), but it's perfectly safe crusing at 100mph, however, Germany is a different story, I drove off-peak traffic (evening and night) most of the time I had 180-220km/h. I love the V8 on the LS430, 200km/h and around 3200rpm ! Avg LPG consumption for the whole trip turned 17.5L/100km, or if you prefer 16mpg of LPG My drivvo app (btw I recommend it) reported avg £0.166 per mile cost, but have to account that LPG in Poland is dirt cheap (compared to the UK, around 45p/l), also mainland Europe slightly cheaper too. What is your urban LPG consumption on your LS430? Mine doesn't look that good any more, I just had a couple or more full tanks, driving only in Colchester for the past 2-3 weeks, and it works out 13mpg of LPG (22L/100km), from which the drivvo app computes a £0.25 per mile with LPG priced at £0.68 at a local station here. I compare that to 18-19mpg (15L/100km) of extra-urban (when I drive 60-70mph). Fact is that, I do have a bit of a heavy foot, and the car weight is over 2 tons, so taking this mass off the traffic lights must cost energy. I don't think there is anything wrong with the engine or the LPG install.
  5. Hi, Definitely the car is more quiet than it was. To make an honest comparison you'd need another LS430 with a genuine and PROPERLY working Lexus exhaust - which may now be difficult to find. IMHO the car is silent as a mouse, I can only hear a short gentle growl on harder accelerations and that's it. The fitting was straight and easy, no mods required. The only difference is that on the new one, the end pipe ( finishing with the chrome piece) is straight, whereas in the original it is slightly bent - but that still is within the tolerance¸ so it all comes out nicely through the cut-outs in the rear bumper. Aesthetically, IMO, the original exhaust with the elliptical spouts looks nicer. I got mine, as you see on the pictures, with those round chrome bits, so I had to forget about the spouts, or cut off the chrome pieces and attach the old spouts. I didn't have time to bother, and wanted the car on road asap.
  6. The manufacturer says the material is aluminium-coated steel. On average, mufflers from that factory have good opinion on Polish forums. I'm guessing it all depends on the quality of the coating and its thickness. Also makes me think if the coating is applied inside and outside, or just outside... Time will tell. I'll definitely report if I see any problems. I almost bought genuine Lexus ones, but some intuition told me to think critically and open the old box. Now I know that the Lexus design is screwed up, so I wouldn't buy that exhaust (made by Lexus) unless they start making it from gold! To be honest their price is such as if it was made out of gold... Otherwise the spring flap will corrode and you end-up backwards - what's the point?
  7. 500 PLN for the two incl delivery. That should be a bit more than 100 GBP, but it was in Poland, domestic delivery. I found they do ship to the UK and the EU https://www.ebay.co.uk/itm/Exhaust-Rear-Silencer-Muffler-LEXUS-LS-430-4-3-V8-32V-00-06r-PAIR-L-R-Black-/112440134007?hash=item1a2df44977
  8. Yes, I believe the original was factory fitted exhaust. Also, the car is full dealer service history, and there is nowhere mentioned that the boxes were replaced. Mine is 2004 so 13 years+ not bad, but I think if it wasn't for that stupid flap it would have lasted much longer.
  9. Hi there, Last summer, just after I bought my LS, I discovered that one of the exhaust pipes didn't blow as strong as the other. The difference was quite significant. At first I panicked a bit, but a quick inspection led me to discover a leak in the right back box, precisely its bottom wall, centrally located around half way length-wise. It was big enough. The corrosion was pretty bad, so I decided to get a new one. I wanted the best solution, and thought that I should get it from Lexus, (a ton of money) or if from any other shop, it should be as close as possible to the original. The search was long an painful, and I was giving up when found a small (home business) manufacturer in Poland. They are making all kinds of custom-made muffler replacements. I pre-ordered and in less than two weeks I had both of my boxes delivered - brand spanking new as shown on the picture. I also had a chat about my problem with the engineer from that company, who said that LS430 back box has a built-in design flaw, and that's why they all corrode and screw you up always in the same way. Not waiting any longer I grabbed an angle grinder and the results you see on the pictures. As it turns out, the mid-section wall has a flap on a metal spring. This spring gets exposed to pretty corrosive environment (water, and temperature), and you don't have to wait very long (I wonder how long) before it's so corroded that the flap cannot open any more. This leads ( you can guess) to excessive exhaust gass back-pressure build up, which is not very nice for the engine nor it is good for the performance. My flap was quite badly stuck closed, which also leads to excess water accumulation in the compartment before the flat, which in turns causes the bottom of the box corrode all the way through. On the finishing note, I am happy the new boxes do not have that annoying flap, the car runs nice and quiet, so far no problems. What I discovered in this case is to me an example of typical blind over-engineering, without thinking through about materials, the environment they are working in and the consequences. Had I gotten my brand new boxes from Lexus (for an astronomical price) , I would have had the same problem back in a few years soon.... Regards
  10. Hi, If I may chip in my answer, here is what I have learned doing my own research and working with a friend with over 25 years experience servicing medium and enterprise range inverters and backup power supply systems. Get your capacitors from a supplier that can guarantee/ tell you how long these have been sitting on a shelf before you buy. Electrolytic capacitors are known to have rather short shelf life (2-3yrs) and deteriorate their parameters randomly when not in use. Also if you need to replace more than one piece of a kind, say 100 uF, make sure ALL these 100 uF for your PCB come from the same batch, have the same manufacturing date, come from the same factory of a top notch producer. Maybe look for NIPPON, PANASONIC, EPCOS... Check maybe if UK Farnell can get you some, rather than eBay... If you have an LCR meter check them for C and ESR. https://electronics.stackexchange.com/questions/8794/do-electrolytic-capacitors-have-a-limited-shelf-life I wouldn't waste too much time, but if interested, here may be a good start for a further reading: https://www.researchgate.net/publication/3191479_Shelf-Life_Evaluation_of_Aluminum_Electrolytic_Capacitors http://www.rubycon.co.jp/en/products/alumi/pdf/Performances.pdf https://en.wikipedia.org/wiki/Capacitor_plague Hope this helps, and you get your car sorted. Btw, your subject just made me think that I maybe should do some prev. cap change on my 2004 ls430...
  11. Thanks for sharing your experience John. I think there are significant technical differences here, and therefore our experience is different, no doubt. Your engines are fairly big compared to my 1.6 primera - not the main point but it has to be sad that if you have a 200 - 300 horsepower at your disposal, you won't really notice let's say 10 or 20 missing because of low fuel quality, to be precise because of low octane and/or caloric value. It's a different story on an old or better put very simple engine running on a carburettor with fixed ignition timing (i.e. my primera), compared to a more modern engine where the ECU software is quite flexible and can re-map the fuel/air proportions, fuel dosage and ignition timing dynamically in order to give you consistent and good ride without sacrificing performance. What you will notice though, is that if you fill with low octane petrol or low quality of LPG, the fuel consumption will go up. I've heard some mechanics saying that you have to burn a tank or two of good high octane petrol for the engine to re-learn and adjust - not sure how much practical truth is in that, but sounds plausible. Most cars are typical daily rides, and will accept a wide variety of octane value, but these cars are rather tuned towards the lower numbers (around 90 and higher). You can still put 100+ in them but you may not notice that much improvement, maybe a few % better mpg, and a smoother running engine. Tuning for low end of octane is simply a safety margin, i.e. if you happen to drive through Ukraine, or Poland and fill up on a shady station you won't blow your engine. But if you decide to take things in your own hands and re-map the ECU for higher octane petrol 98 or 100+ or a better LPG, you will definitely enjoy sharper acceleration and better mpg, there's no doubt about that, especially if your engine is turbo-charged. The problem I see here, however, is too much risk. Especially for LPG, as there are no standards of octane or "quality" of LPG as there are for petrol. Believe me or not, there is excellent, average and, awful LPG out there. I think that my old primera is a good testing platform for fuel. The engine has got at all times one stiff base setting for fuel/air proportions, does not try to compensate, re-learn for one or another octane number, and has one fixed ignition timing that you can set yourself on the ignition distributor - which is currently lightly over-advanced. This is why I can better feel the quality of fuel, as it is the only one parameter that changes in the whole experiment. In modern engines there are so many parameters adjusted dynamically + quality of fuel comes into play, so I agree you may have trouble figuring out the cause from the effect or any difference at all. On the quality of fuels my impression is that outside Germany everywhere else is worse, especially for LPG, and the more to the east or south you go it gets worse and inconsistent. In Poland alone, throughout say last 10 years there were a few nation-wide petrol related scandals uncovered. Stations selling 98-100 octane on the label and after lab tests turned out it hardly had 95. The 95 labelled one had barely 90, and so on. And much worse things like unusually high water amount in fuel, etc. LPG contaminated by shreds of metal particles and scum. Many people got engines damaged and tried to claim that from the petrol stations. And in some cases that was not necessarily the stations creating the scam, it was also corrupt one level above, the fuel was already like that when arrived from our national refinery, that's why I've said nationwide scandals. One last note - I have no personal reasons to praise Germany, or complain about Poland, just telling the reality from my perspective. **** sometimes happens no matter the country, but where big money and politics/govt/regulators mix. Look no further than the last VW emissions scandal...
  12. Those who know the subject will recognise some parts. The LPG ECU hidden away under one of the covers on the RHS.
  13. No, I did it in Warsaw, Energy Gaz Polska, or Energy Gas Poland. They specialise in challenging projects, and have been auhtorised by many dealers, including Toyota/Lexus. They've done dozens of LS 430s, and showed me some of their clients have covered 700k+ km on LPG fitted LS430s and still running no problems at all. So, I had to look no further. I wanted an experienced garage and engineers that know this particular V8 (3UZ), and they know what they are doing, so I end up with the best gas conversion kit possible for this car and get the best work done, the price did not matter. By the way I've seen some very impressive LPG conversion projects made by them: Audi RS6 V8 4.2 bi-turbo 511 bhp, Subaru WRX, and lately Ddodge RAM SRT10 with Viper V10 8.3L 517 bhp
  14. Yes if the installation is done right, on the right engine there should be no concern. However, on some poor quality engines they (valves) happen to burn, even running solely on petrol !!! - some new 4.0L grand cherokees love it - so forget an LPG on that, or find out for yourselves. My neighbour just killed one cherokee like that. Another example is when an LPG installation is not fine-tuned and running the engine too lean - for many reasons - carelessness, clogged gas filters, worn gas injectors, or because the customer wanted to skimp on LPG fuel consumption and/or the shop wanted to brag the customer that they will fit an LPG and the MPG will be as good as on petrol... Yes, so to compensate for the lower caloric value, a typical LPG will consume about 10-20% more fuel, but again, a decent LPG has easily an octane value above 100, so if the fuel maps of the engine are tuned well, or if the software of the engine can learn and adjust to this octane dynamically, the results can be astonishing, especially power-wise. Most of the LPG is composed of butane and propane. Butane has higher caloric value, and burns hotter, but not so good in freezing conditions, propane is the one less caloric, but burns better when cold (much lower freezing temp) - that's why the LPG for winter has (or should have) different proportions propane/butane than LPG for summer - on some engines in extreme temperatures you can feel the summer/winter difference. Now about LPG quality. I'm from Poland, do a lot of driving back and forth from the UK, and sadly must say that LPG quality (and the power your car can get from it) is not consistent across the countries, and even filling stations. In relative terms, Polish gas is ranges from poor to average, sadly, BP in Poland IMHO is not impressive at all. Belgium and Netherlands have consistent quality, but not impressive, UK the same. What stands out is Germany, and only specific stations: I can trust any ARAL - I have tried many of them, and all of them have 100+ octane petrol too. Last trip I filled on a German Total, pricey, 72 cents/litre of LPG, but my nearly 25yr old primera 1.6, 16v on carburettor (!) started flying. Engine got so responsive and eager like never. 190 km/h top speed on that LPG, while usually struggled to top 160-170. Note - it's got a lightly advanced timing to account for higher octane petrol or LPG. Just before Dunkirk I stopped on Belgian Texaco to re-fuel, 42 cents/litre, and... so disappointed - acceleration was like driving through wet cement. Just converted an LS430, and testing, so the time will tell, but so far I'm very happy - running last BRC Sequent Plug&Drive conversion kit. I did the conversion in a Lexus approved garage, with 2yrs warranty etc. I was also surprised to hear that now in Poland many dealers (if you request) will outsource an LPG conversion and sell you a brand new LPG powered car, and this will not affect warranty, your rights, etc.
  15. Depends, and not necessarily, For example the new Prins installations for engines with direct injections of liquid phase gas don't need that, in fact the LPG in liquid phase helps to cool off the valves. My personal feeling is that the old Jap engines, like on my primera P10, 1994 were made much robust and designed with a high margin tolerances for temperatures and such. I've been running this Nissan for over 15yrs on LPG with no valve lube, and compression testing it - no change whatsoever.