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Jamie_grieve last won the day on December 4 2018

Jamie_grieve had the most liked content!

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About Jamie_grieve

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    Old Hand

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  • Location
    South Lanarkshire

Previous Fields

  • Interests
    Making noise and mess with off highway toys, trucks and machines.
    Making noise with fiddle, flute and whistle.
    Gold panning and travel.

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  1. Jamie_grieve

    Gold box on an LQ4 v8

    Cheers for the response, and a good one at that. I should have said already actually, that is a Bosch injector from a Volvo I was looking for. I think it's one of the most commonly used in aftermarket applications. I'm struggling to avoid the word 'tuning' but that's exactly what it is. I was looking for a set of genuine flow matched ones but the only ones I've found on my feeble searching thus far that claim to be are Chinese knockoffs. It's EV1 connections I need which thankfully seem to be the most common in Europe but not in flow matched sets of 8 because of our predisposition towards cars with not enough cylinders. Some further information on the engine for those in the know as suggestions are totally welcome. The engine is part of the LS series of engines from Chevrolet. Mine has a 9.4:1 compression ratio, I've added a 25kg flywheel to it to help with running at low rpm. Cam specs are: Duration @ .050 in. (int./exh.) 191/190 196/207 Valve Lift (int./exh.) 0.457 in./0.466 in. 0.467 in./0.479 in. Lobe Separation Angle 114° 116° I'd like to have a clean 500 rpm idle and aiming for over 40hp at 1000rpm. I was wondering if the duty cycle of larger injectors would help with sequential injection timinng at lower rpm? Everything on the internet seems to focus on high rpm power for these engines. I'm only interested in the 500-2000 rpm range just now. I will have a variable displacement hydraulic pump driven off the crank and was even thinking about a hydraulic powered supercharger for low rpm boost. I'm also considering adding a turbo, partly for power and partly for noise reduction. The new injectors need to be sized to allow for a bit of boost. One thing I will struggle with any kind of forced induction is that because I wan't boost at low rpm any compressor will be out of its comfort zone going ten times faster. That's the point of this engine for me, something that can go from 500 to 5000 rpm. My lowest gear is about 90:1 so even the tiny amount of torque it makes at 500rpm coupled with a 25kg flywheel should take me over a tree stump with a 40" tyre. I'm not remotely interested in high rpm horsepower numbers. It has two knock sensors I think I'll be relying on pretty heavily to start with. The picture is how I did the pto for the crank pulley. It's an adapter ring turned to sit inside the pulley and is retained by four 8mm dowels and two further 8mm dowels to pin the pulley to the crank. I used the adapter as a drill guide to drill two 5/16" holes for the 8mm crank dowels. The flange face is just the same as a land rover flange on a transfer case or diff. I turned a groove and put a circlip and bolts in after this pic was taken to make it easier to use, the diameter of the inner part catches the bolt heads just like the regular flanges do to stop them turning. The crank bolt holds it together. On an LS engine, the crank pulley / harmonic damper is an interference fit only with no keyway so the extra pins I put in are to stop it turning on the crank when under load. The two pins are drilled half on the crank and half on the pulley.
  2. Jamie_grieve

    Gold box on an LQ4 v8

    Yes, but no. The injectors were correct for an application that this engine isn't in now. The original configuration had a rev limit of 5800 rpm at 80% injector duty cycle. The injectors in it have a mini delphi connector that suited the old loom but not my new loom and are well known to lean out and cause problems. They run at 80-90% duty cycle in the factory standard applications. They only flow around 3.180 gm/sec or 25.2lb/hr @ 58 psi compared even to the smaller displacement engines of the same family which flow 30lbs. There are around ten different factory injectors for the LS family of engines, none of which are recommended by 20 years of peoples experience it seems. I wanted an injector with which the Megasquirt community was familiar with and that all the data such as dead time and offset was available and around the flow range of other identical engines and easily obtained base map tunes. The same injectors I'm looking at have been used in a number of rover v8 builds and I think are well suited to the application and will have enough flow should I add a little boost. Have you any suggestions to find reasonably priced flow matched injectors? Cheers for being the only one to respond too!!
  3. Jamie_grieve

    Gold box on an LQ4 v8

  4. Jamie_grieve

    Thoughts and musings on the new defender

    That right there. If diagnostics was open source for the defender replacement it would alleviate most of the fears of the last 22 pages here and owners could actually modify certain non safety related systems, override others or at least diagnose and repair faults. Although one fear with an easy to repair vehicle like the defender is the proliferation of companies like Britpart and others selling substandard parts. If land rover sold parts at reasonable prices it would prevent this at a stroke. Why do some get a 60 or 70% discount depending on status and another owner pays full price? Why does land rover find it has to charge £575 to change the front pads and discs on an old Defender? I remember changing pads every month in a coal mine, I can only imagine the expense with a vehicle using traction control regularly. It's of particular relevance, as with the Toyota 70 series, many vehicles are sold to, and operate in regions with no dealer support whatsoever.
  5. Jamie_grieve

    Thoughts and musings on the new defender

    Thanks for posting, I couldn't bring myself to do it. I still think there's an elaborate hoax going on.
  6. Jamie_grieve

    Gold box on an LQ4 v8

    I got a Megasquirt Gold box to run my LQ4 after the factory loom and ECU was as cut out from the vehicle, the aftermarket ECU and loom almost worked but had the immobiliser (VATS) enabled which cut power to the injectors. I imported the gold box from EFI Source who makes them in the states after really struggling to find any open source information on tuning LS type engines in the UK. It arrived after getting mugged by customs and general confusion between the US postal service, UPS and Parcelforce. DHL is the only way to ship small items from the States I think. The LQ4 is going in an off roader bolted to an LT95 4 speed from a 101 with a trailer / Perentie PTO on it. I'm only now at the stage of needing it running properly and need to change the injectors to an EV1 type. I was looking for an injector that is well known and supported in various applications and was thinking the Bosch : 0280155968 'green giant' 440cc injectors are about the right size for my application. There are a lot of Chinese knockoffs of these things which seem to have sold in large numbers but less so of the genuine ones. https://www.ebay.co.uk/itm/Genuine-BOSCH-0280155968-Fuel-Injector-0-280-155-968-GREEN-GIANT-440cc-EV1-4/112888562774?epid=249286692&hash=item1a48aec456:g:FA4AAOSwpNxatUhJ Has anybody any recommendations for where to get 8 flow matched injectors from, preferably in the UK? I have never used megasquirt in my entire life so it will be a learning experience for me for sure. I'll post random updates here and probably a lot more questions. I have sooo many questions but also thanks to everyone who's posted here in this sub forum, especially Nige which is partly why I went with megasquirt instead of Holley or any of the other big names. I added a picture just because posts are boring without them and I don't have any pictures of injectors I don't have. The front suspension is a one link.
  7. Jamie_grieve

    Thoughts and musings on the new defender

    Why does Mercedes continue making money from constantly updated unimogs then? Iveco joined the money making utility bandwagon with the Daily 4x4, Jim Ratcliffe also thinks there's money to be made from the projekt grenadier, there's a market and money to be made from a decent utility vehicle, even at the price point that JLR would need to come in at, although a few bits of old range rover dragged out of the scrap bin won't cut it this time round regardless of how much new pedestrian friendly plastic tat gets nailed on top. The market for a utility vehicle at a lower price point is massive, if JLR with TATA's help could get into that, it would put them on the map in places they haven't been in decades.
  8. Jamie_grieve

    Thoughts and musings on the new defender

    That is exactly the truth. At 0:36 you can clearly see the front wheel has run out of downwards travel and the traction control has kicked in holding the wheel at 0:37. This tells me two things, one they're either not fitted with a front locker or aren't using it and two, the people trying to convince me or themselves that the d7u platform has more travel than coils and live axles are mistaken. The (lack of) wheel travel here and is almost identical to the video of my friends disco 5 I posted earlier. Just to be clear, I'm not one of these people saying old is good, I'm in the 'old was garbage and should be burned with fire' camp. I just think a huge opportunity has been missed if this is the defender replacement and I don't understand why anything as simple as a utility body on a D7U platform should have taken 5 years to develop, unless it's just a clever hoax which I increasingly believe it to be. There's also nothing particularly durable about that suspension either.
  9. Jamie_grieve

    Thoughts and musings on the new defender

    Are they testing it off road? Have you actually seen any video or pictures to that effect? I haven't but of course I may have missed it. I believe it was purely a publicity stunt and nothing else. They've had that same suspension for at least 4 years, what's left to test? Testing compared to the competition? Well, the competition would appear to be Jeep and G wagon as they arranged for their stunt. The Jeeps already did the 'trail approved' thing years ago, have the badge on the wing and land rover is playing catch up here. G wagon has the history and development that doesn't need mentioned and is constantly conducting trials for various military and international organisations that JLR will have to try hard to get into. I disagree with your comments on the exhaust, it's quite frankly a ridiculous place to put a piece of thin metal which when squashed will seriously damage the engine and your chances of getting home. Contrary to what you may believe, diffs don't get damaged scraping them on the ground like exhausts do.Your comments on this surprise me actually, You don't just poke a rock through a diff, millions of live axles out there prove you wrong, it's not impossible, it just doesn't happen. The placement of the exhaust is not an elegant design, it's just plain stupid like the oil coolers that Red90 posted. It's not a design feature to alert you to reaching the available ground clearance , it's a poorly executed afterthought like the oil coolers. Hitting those low hanging fragile looking alloy lower arms will be a different story to hitting a much higher steel axle case on a rock, it'll be interesting to see how they last when they get hit and how the tyres fair when the bushes flog out if this is actually the final design which I doubt. I'm with Red90 on this, he clearly stated short arm independent which is not used on any of the vehicles you mentioned. There has never ever been a successful independently sprung commercial vehicle, not the Pinzgauer, Tatra, Hummer, Champ, Gipsy, Mutt, DAF etc, they've all been one hit wonders and all sharing the same instability, maintenance and reliability issues. Try looking at this from a fleet user or remote areas operation standpoint where simplicity, whole life costs and durability come into play and less from a JLR fanboy perspective to understand many of our legitimate concerns.
  10. Jamie_grieve

    Thoughts and musings on the new defender

    I was just gonna post the exact same pictures, you all beat me to it. Can anybody confirm any differences in the defender replacement rear suspension pictures from Moab and the discovery 5? I'm not intimately familiar with the disco 5 but that looks pretty much identical to how I think they look. Are we actually being hoodwinked here? Are they testing the torsional stiffness of the new body perhaps with old disco running gear to keep the real thing under wraps? I can't believe they'd launch the defender replacement with disco 5 suspension. Don't get me wrong, the disco 5 suspension is great and perfectly suited to a discovery which is on road 99% of the time or towing trailers but not for a Defender replacement. I also don't think it would have taken so long to develop and launch if it was just a reworked disco 5. I thought the Defender replacement was going to be on an all new platform anyway? Also, the exhaust actually runs under the suspension and is the lowest point on the vehicle in an area very likely to contact the ground, there's no CTIS visible, antiroll bar disconnects or any other modifications to make it more robust or improved for off road prowess, same tiny half shafts too. nah, I think this is another marketing stunt to try and generate interest like the ones to coincide with the Paris motor show. They just happened to park up and let a bunch of journalists take pictures next to two competitors vehicles?
  11. Jamie_grieve

    Vehicle transport recommendations

    There's a lad called Daniel Watson runs around the UK most weeks, he's based up your way.
  12. When I did mine I took off the bump stops to give me a worst case scenario. I do that on pretty much everything I put an engine in just to know there wont be any mistakes. On articulation the axle can only go down from there. I’d be really interested in your build thread too.
  13. Jamie_grieve

    Thoughts and musings on the new defender

    Lol, you may have been closer to the truth than you realised. https://www.autocar.co.uk/car-news/new-cars/new-land-rover-defender-interior-leaked-ahead-unveiling?page=1 Of course it could easily be a marketing stunt and nothing like the real thing. If it's real then I suppose it could have been a lot worse, it's hard to make utilitarian not look dated. The centre seat's interesting and I wonder if that's real as I could imagine that being difficult to get through crash testing. No obvious diff lock or low range selection makes me wonder how the manual version will work. I can't imagine how successfully getting in with mud on your hands or soaking wet you would be able to select the low range or other functions without filling the switches up with mud but I'm sure they thought of that. On a separate note, this link from the comments is interesting about JLR in China and reflects much on what many here are saying about quality. https://europe.autonews.com/automakers/jaguar-land-rovers-china-problems-stem-lax-quality-control
  14. Jamie_grieve

    Paddocks Jump Start packs

    I've tried a few different ones of these and have been really impressed by their performance. The first ones I tried a few years ago were the really cheap and nasty Chinese ones which could start a 4.2 diesel land cruiser from dead flat. I would never have believed it if I hadn't seen it. That said, they struggle with glow plugs a bit due to the duty cycle they have but I'm a great believer in them now.
  15. Jamie_grieve

    Thoughts and musings on the new defender

    There have been over 7 million land cruisers sold so far, about 10% of which just in Australia. It's also a commercial vehicle, not a car in most regions it's sold in so doesn't appear in the comparisons. The link you posted was for UK car sales and the few land cruisers listed are the 100 and 120 series with a few 200's in there. The heavy duty ones are the 105's, the HZ and VDJ 70 series as was explained in earlier posts which we never got in the uk. You can basically compare the defender to any of the ones with 5 studs in the wheels instead of 6. Their reliability is legendary, they do break, anything does, but just as if you break an anvil, generally you were doing something silly at the time. They have a lot of attributes like a Defender in that they are easy to fix, have a huge aftermarket of shoddy Chinese parts and are generally abused and overpriced on the secondhand market.

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