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RBPE

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Everything posted by RBPE

  1. RBPE
    Little update; In about 5/6 weeks I am either going to stick it on ebay or remove the LPG and big turbo it I think, it's too nice for the latter though really! It's currently logging around 150g/s which equates to somewhere around 190hp (lost a dyno plot for 195hp for it so seems the same), also logged 206lb/ft all at 16/17psi of boost. - EDIT: Found dyno from when it was mapped I bumped it up to 20 and 22psi but throwing a DV code, which I thought was on it's way out so going to replace the 710N/P, it will be further tuned though t
  2. RBPE
    Little beasty, I'm sure we can let him off for a lack of cylinders.... always nice to see a lithe mk1 spanking the usual car mag cover stars let's be honest!
  3. RBPE
    Should be able to hunt one down, few shops were advertising the B41 if that's it, Google's your friend peeps! http://www.ebay.co.uk/itm/Genuine-Volkswagen-Rocker-Molding-Strip-1H0-853-985-B41-/282439200209?hash=item41c2b02dd1:g:alYAAOSwHptY98XH
  4. RBPE
    VAG Educational; http://www.volkspage.net/technik/ssp/index1_eng.php http://www.volkspage.net/technik/ssp/index2_eng.php http://www.volkspage.net/technik/ssp/index3_eng.php http://www.volkspage.net/technik/ssp/index4_eng.php
  5. RBPE
    A new Wuxi Holset would probably come to £500-550 or so, linked one in the "What turbo" thread is a 12cm too - only a few hundred more for a new Holset, what I would probably go for. You'd be surprised what you can fit in an old Rocco bay;
  6. RBPE
    Pretty cool vid showing the combustion process;
  7. RBPE
    When you say switching itself off do you mean closes the throttle? That usually means running lean and is what the ecu does, can be various reasons though, MAF (HFM), dodgy injectors, fuel pump problem etc, also DSG/Mechatronic prob. If it's turning the electrics off then it's usually a short/wiring problem, could be wires or perhaps a loose battery shorting? VCDS/VAG COM is your friend though! Many use copied ones on their own cars due to cost; later ecu's with better OBD programming work better than old ones, RL tends to be better ones, can be windows specific etc, ha
  8. RBPE
    Bought a few weeks ago from a friend as it was too good to pass up, has had loads of work done and was sat in the unit for months due to too many cars. I was thinking about a big turbo build on it but it's a good daily for someone and want a 6 cylinder for that - as such, sensible offers or would swap for a V6 4 motion. 51 reg 1M Leon Cupra AUQ 180hp 133k - 3 owners High end LPG system with switchable button 11 months MOT New brake lines, some sill welding and other bits done for MOT New discs and pads all round about 1k ago New k03s turbo CHRA around
  9. RBPE
    £200-250 Holset's are usually just 2nd hand, they can be hit or miss with how good they are, some are in need of a rebuild - budget £450-500 for a remanufactured one already done for you on the bay!
  10. RBPE
    It's not really that to be honest - if you get dodgy injectors you could have fitment problems... fuel leak + hot engine = big expense! Linearisation problems over time means more tuning = more expense, one runs lean etc. You get a cheap wastegate and it put's too much boost through your set up and runs lean due to lack of fuel = big expense. Cheap turbo material spinning at tens of thousands of revs snaps off it's wheel and goes through your engine = big expense - that's the reasons people do it properly from the start really! If you're operating on a budget, then don't do too muc
  11. RBPE
    Don't skimp on the wastegate, the cheap ones can have problems easily and are often set for high boost, don't get cheap knock off Bosch replica injectors either, same with the recirc valve - if you skimp on the air/fuel parts you're asking for trouble! Also don't bother with RS4 maf unless the tuner says so, there are different ways depending on what they do, so speak to your tuner before you do any air/fuel metering changes to see what parts they use otherwise you'll just be wasting money there as they'll either tell you to change to what they used for their tunes or further work
  12. RBPE
    Updated it a bit and added some more links
  13. RBPE
    Oh and usually, from the US, it was price of item + postage x 20% vat and about 6% import duty - from EU there was none and hopefully HM Gov will not tax or cause import hold ups post Brexit seeing as Germany's 19% VAT is pretty much the same as our 20%.
  14. RBPE
    Links are in the "what turbo" thread, genuine Wuxi from China are still Holset's, cheapest place you can get them really, UK sellers do them but add on a profit obviously, the 2 ebay companies linked get the Holsets the most, remanufactured and just 2nd hand it seems. Turbo Zentrum is about the cheapest for the Super Pro's and do 14cm, so they're your best option outside of a scrap yard to be honest..... I've done my homework! ;-)
  15. RBPE
    They're usually twin scroll housings but single or twin will spool well, especially a 35 with 12cm housing, good for a quick spool <500hp build. Proper benefits from a twin scroll is the correct pulsing of the exhaust gas, so that the engines cycle/expelling of exhaust gas, works in harmony with the collectors and in essence, pushes the gas through without restrictions (laminar v turbulent flow/helmholtz resonance). A twin scroll manifold or set up that hasn't had this calculated will not benefit as much and could lead to some turbulent flow that can be a hindrance at, for
  16. RBPE
    Shouldn't do really, although some companies seem to use both, could also depend on any warpage/decking aspects or what comp ratio people are aiming for, for example.
  17. RBPE
    PART 2: So, once we have an understanding that there is a lot of marketing spiel, a lot of material and QC variances that you should look into to get the best, let's be more specific to VRT tuning! Common destruction of engines; I would say, in my experience, that there are two major factors in destroying engines and no matter how many times I tell people, this can also supersede any of the upgraded material specification aspects mentioned previously, it is what ultimately destroys engines the most in my opinion - age! Engines are set up for certain tolerances, certa
  18. RBPE
    Some basic info if it helps? 1. Understanding design and construction; In my experience, I was surprised to find that the material specification for something like an Audi 1.4 crankshaft was the exact same as a 3.2 when I did some years of research into parts manufacturing, but in hindsight and more management based experience, it stands to reason really! There's often talk on forums about whether something is forged or not meaning it is stronger but this is often something of a fallacy! Uniformity of the construction of a part can change based on the actual process that is u
  19. RBPE
    Sorry, not been on. Err, 17cm 40 will be like a GT40R 1AR ish so 4krpm's+ for decent boost, good if you want 600+hp though! 12cm HX35 most likely good for 500 ish hp or so, maybe a bit more, so a 14cm HX35/40 would be one for 500-600hp (all as a base/rule of thumb of course). So take that with the links above and budget as well as goals, when I say 500hp on a 12cm 35 for example, this is just a rough guide, a very efficient set up can yield 100hp more at the same boost. As a guide, I'd roughly estimate; 12cm - >15-18psi 14cm - 18-26psi 16/17cm - 25psi+
  20. RBPE
    I have had this reply from the shop about the Wuxi one.... hi,in this HX35 3539697,There is a NO.12 in exhaust housing intake mouth,and in HX40W have 16 or 17 inside,which one do you need?tks. So - I am taking that to mean 12cm on the HX35 turbine side and 16/17 on the HX40's they sell. Am asking if they do multi-item discounts if any others are interested?
  21. RBPE
    Oh and p.s. If you do go the scrap yard route, there are always alternatives! http://www.ebay.co.uk/itm/Holset-HX40-19cm-T4-twin-scroll-high-flow-turbine-housing-New-and-unused-/262853248602?hash=item3d3346465a:g:S04AAOSwjDZYcPul http://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR0.TRC0.H0.Xholset+turbine+housing.TRS0&_nkw=holset+turbine+housing&_sacat=0
  22. RBPE
    You mean the Wuxi ones? New Huddersfield made one's can be very hard to get a hold of and can often be a similar price to a Garrett! Some alternatives though. From what I can gather there's probably 2 shops on aliexpress selling Wuxi one's, this is one; https://www.aliexpress.com/item/NEW-GENUINE-HOLSET-HX35-3536338-3539697-6735-81-8400-Turbo-Turbocharger-for-KOMATSU-PC200-6-Excavator/32741369146.html?spm=2114.01010208.3.42.WjGbAm&ws_ab_test=searchweb0_0,searchweb201602_2_10091_10090_10088_10089,searchweb201603_1&btsid=531742a0-ca27-4e6c-8e73-ff0f63f76e2b I
  23. RBPE
    Also, on a further note; turbine/boost aspects to think about on Holset's; If you get a Holset from a scrap yard, off a truck for example, they can have huge turbine sides (>29cm+) - and getting info on the turbine sides from general adverts like on ebay can be difficult, can be big ones like this, if they are shops re-selling them for the truck markets especially! For decent spool you want to be looking at the 11-14cm turbines, 16's or so for the higher outputs (550-600hp+), which some people do for aftermarket sales, but as most are stock diesel engined turbo's, they can there
  24. RBPE
    Most I've dealt with tend to be looking around 450-500hp max on those 12cm HX35's (all crank hp figures for non UK residents reading this by the way). On the chart total flow should see you past 600hp (lbs/min x 10) - however in reality there are a number of factors, efficiency of your set up, what turbine size etc so I would say the 12cm is probably good for 500ish hp tops and either larger turbine or start looking into the HX40 past that.. There's an old thread here with spool info on the VR6 plus some on the older T series turbo's.
  25. RBPE
    Holset info; *** I think the smaller AR's are out and seem to vary quite a bit but are usually on the sellers post. From what I can gather, the Holset's from their Huddersfield factory have the blue stickers shown here (left) and the other stickers are the one's made in their Wuxi factory in China. I think anything else is a copy but don't quote me on that. EDIT: Also, to clear something up that bugs me - the Wuxi Holset's will likely be just as good as their UK counterparts as they probably stick to the same QC's as their main factor
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