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About ProZac

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  • Birthday 27/04/1983

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  1. Work and real life have been pretty busy recently, so haven't found much time out in the garage. Students are back next week too, so work is likely to be a bit hectic for a bit. I did manage to get the ignition leads built this afternoon. It's really starting to take shape. SOOOO many nickle and dime jobs to do though. Still need to machine that trigger wheel. I've tapped the fuel rail for M18x1.5 fittings that I'll seal in with bonded washers... But the M18x1.5 -> AN6 adaptors are coming from China, and everything out of there is on the go-slow due to the virus. Not that I'm complaining (much), its got to be pretty horrific. Once those fittings are here though, and I can permanently fit the fuel lines, I can sort the front thermostat housing. Really really procrastinating about that... :-/. Also, I really need to build a garden shed and get all the gardening gear out of the garage.
  2. HOLY FUCKING SHIT IT IS HOT TODAY. Needed a quiet easy project to do in the heat, collected up all the bits for the alternator jigsaw. A couple of months back the alternator on the side of the 4g52 in the truck at the moment spat the dummy, brushes were doneburgers. I couldn't find a replacement one second hand locally, as they're different to the ones fitted to 4g63's, which are pretty common. I grabbed a 4g63 one anyway, thinking I could at the least harvest some bits from it. Turns out the voltage regulator / brush holders are the same, so I swapped those over and my truck was charging again. This left me with a super crusty 4g63 SOHC alternator, with worn out brushes and dry bearings. I took it apart, ordered everything it needed and vaporblasted / zinc plated everything. The replacement reg / brush holder I ordered was damaged in shipping, so I harvested the new brushes from it and swapped them into the reg / brush holder that had originally been in the 4g52 alt. Then had to remember where all the plastic isolators went. Got it reassembled with some new bearings pressed into place too. My workspace is just a typical internal access double garage. I don't complain as its better than what many people work with, but It does mean I need to keep things mobile, and stored away when not in use. This is about the cheapest press that money can buy, but does the job for 99% of what I do. Putting it on wheels was one of the best things I've done, as its so easy to store out of the way the 360 days a year its not needed ;-). Nothing more super exciting about the job, everything seems to fit up. The zinc plated fan and pulleys are a little bling though, they might get some rattle can black action. In other news the 1/4 BSPT to AN-4 adaptor turned up, so I could fit that to the back of the oil filter housing the start eyeing up the turbo oil feed. I'll need a 45 on the oil filter housing end, and a right angle on the turbo end, plus some heat sleeving. The bits to make the ignition leads also turned up. I got the spark plug ends all done, but the manifold / coils are still at work, so couldnt do those. Next week maybe, but I'll be away up in the Coromandel for Ledfoot, so maybe not. Now I think it'll be time for come cider in the sun.
  3. Hmmmmmm, nice. Great to see another L200 getting the good treatment they deserve :-).
  4. I've got a box from a 2.6 2nd gen L200, so wideblock and cable, should bolt to everything / existing mounts and be the right length. I've got a spare Starion box too, so might look at swapping the gearsets if the Starion boxes have longer legs, no idea if they're even any different.
  5. Bugger all progress on this in the last week unfortunately. Lots and lots of kids (include my own's...) birthdays organised and attended though, hah. I got the throttlebody flange machined. Went perfectly as soon as I added coolant. I'm almost wondering if this 6061 isn't heat treated, and that's why its gummier than I'm used to? Anyway I made lots of chips and released this object that was hiding inside the bar-stock. I got it tacked into place also so I could check the fitment of everything. Shot myself in the foot with the fuel rail though! I got some weld in AN-6 plugs for either end, thinking it would be nice and weldable like the rest of the Mitsy castings from this era (in my experience anyway). It is not. It spits, goes mad porous, and generally doesn't behave at all. Luckily I tested this on one of the mount ears that needed to be removed anyway for the throttlebody to clear, so no harm to the actual pieces I need. I've since ordered some M18x1.5 -> AN-6 adaptors, and tapped the ends of the rail accordingly, will seal it with some buna-n bonded washers. I'll have to machine the end surface of the fuel rail nice and flat for this, but no drama there. The weld in bung is just sitting there in that shot, its a nice fit, shame I can't use it. Sorting the fit of the FPR now. It's Tomei one that I took apart a years ago to clean out as it was full of junk, thus the bolts holding it together instead of rivets. The housing was all scratched up so I've blasted it. They're a nicely made piece of gear, the diaphragms are really tough, but I hate how they mount, it's really annoying using the PCD of the clamping bolts. I haven't quite figured out what I'll make for it yet, but something will come to mind I'm sure. This end of the fuel rail will also have an AN-6 fitting, to a 5/16" barb. As my truck is a sport model, its got a feed and return fuel line already, which are 5/16" and 1/4" respectively, thus the 1/4" barb on the bottom of the FPR also. I just need to put in high pressure rubber hose instead of the carby stuff, and fit an EFI pump after the tank (decided not to go in-tank, too much faffing at this stage, will just live with noisy external pump for the moment) and that should be the fuel system sorted. The pressure sensor is a low cost brass bodied one, but is still a Honeywell part, and safe for fuel, just $70 instead of $170 ;-). It's coming together slowly, the turbo looks ridiculous ( awesome), but it really is just an EVOIII 16G, the compressor cover makes it look much bigger. I've got the front plastic engine covers painted now, and it looks nice and tidy with them on. Once my fuel line fittings turn up I can go a better dry-fit of everything, a little bit more scanning and then design the weld on thermostat housing, which I'm really procrastinating about.
  6. The loving projects is mutual mate :-). The black stuff was ABS, Imagin brand. Prusa i3 MK3s, generic ABS temp settings, no tweaking. It warps a bunch on larger prints though, as not a heated build chamber. Mostly I print PLA on it though, and get awesome results also. RS Components branded stuff, just for prototyping :-).
  7. That would be about right, I was coming home from work. I like the canopy, but it limits the usability too much for what I do with the truck, so It'll be coming off :-/.
  8. Hah, lets wait and see if any of it works first... ;-). I'll make two of a few things though, as I'll be doing another SOHC motor in the next couple of years for my Starion.
  9. Yeah, I got some CAD-eye on that one... But the coils are pretty heavy, and I have one bend that is greater that 90deg, dont want it to fatigue and break in the near future...
  10. Well, the momentum got a little lost unfortunately, life got in the way for a wee bit. Managed to get a couple more things done though. One good step forward, but also a couple of annoying steps back. First, the backward steps; my modified dizzy cam trigger idea would work, but it really crowds the area where I need to build the thermostat housing. Not impossible, but just really annoying. Dad was around the other day and we were talking shit and he noticed a little nubbin sticking out of the factory cam... So I think I'll make something up to use that as the trigger tooth. A mount that uses the cam tower bolts. This means that I'll have wiring inside the rocker cover, which gives me pause for thought... But motorsport wiring is something I've got a lot of experience with, and I'm confident I can make it reliable :-). A GS1005 sensor, booted and potted, with DR25 sheathed M22759/32 wiring and It should stand the test of time. I'll make up a custom half-moon seal for the back of the head for the wiring to exit out of. The other step back was also trigger related. I've got a Link ECU for this, and it clearly says in their doc that the crank trigger wheel needs to have a number of teeth that divides into 360 with no remainder... Damn integer math! The SOHC balance shaft sprockets have 32 teeth, so that's not going to work :-(. This is a pretty easy fix really, I just need to machine up a replacement for the sprocket that has a number of teeth that divides in 360... I modeled up a replacement with 12 teeth and printed a test to make sure it would clear everything, its all good. I've shamelessly ripped this off from the kiggly racing trigger kit, but its like $400 to get one of those landed and I'm just not keen to open the wallet to that extent on this thing. I've gone with 12 teeth, dictated by the tooling I've got on hand to make the cuts, hah. Although now that I think of it, we've just had a new EDM wirecutter turn up at work, if I waited a few months I could do any number of teeth I want on that... Ahhh future me's problem. 12 tooth is a little coarser that I'd like with a 272 cam, but all it will mean is a little bit of timing jitter at idle. I'll tell myself it'll just make it lope a bit more at idle and I'll look cool at the lights. Yeah, sure. Right on to the win! I got the coil mount I designed up profile cut and bent it up, and golly gosh, it actually fits! There is something uniquely satisfying in seeing something you've only designed in CAD as a physical object in the real world. I need to get the right fasteners for it, and I think i'll paint it wrinkle black, as that's what the rocker cover will be (with polished lettering of course, because 80's). I'd love to get rid of the ECI-Multi on top of the inlet manifold, because the text is around the wrong way and it drives the OCD nuts, but I cant think of a tidy way to do it... Any ideas out there? I bent it up on a combination of a press-brake and a big finger folder. It needs mild persuasion to get the bolts in place, but really only half a mm or so, which I think is pretty decent for a 3mm sheet metal part with those angles. What I really should do is spend some time calibrating my fusion360 sheetmetal profiles to the tools I have available. Maybe next week? Probably not. I can start on the pattern for the wiring harness now the coils are mounted, that will be another great job to get ticked off. I'll be building it out of offcuts and what not, but will keep it nice and tidy, Fun times :-). Hope this post made sense, I'm 4 ciders deep and waiting for pizza for dinner. Hmmmmmmm Pizza.
  11. CAD and CAM'd up the throttlebody flange, got into machining it, but the mill is half way through having its coolant changed, so doesn't have any in it... Thought I'd give it a go anyway, but the chunk of 6061 I nabbed to carve it out of seems gummier than I'm used to... The endmill is also a cheap chinese one, which might not be helping the situation, but it's chip-weld city, so had to leave off and will continue once I get some coolant in it next week when the rest of the workshop staff are back and can show me where it is, lol. Cut out a plate for the other end of the plenum though and tapped it into place. Got it sitting pretty flush after much back and forth on the belt sander. Gave both bit a quick vapor blast and cleaned them up with some IPA... Then buzzed it in. I haven't welded any aluminium in a couple of years, but it went well. The cast welds pretty nice. A little bit of crap bubbles out of it, but nothing that wont seal up. Was a welder I haven't used before also, and ESAB one. Seems like a bloody nice unit. On my old one you were fixed to 50Hz for the AC, but this one was adjustable. I cranked it up to 100Hz and it was nice and stable. Really want to get the throttlebody flange on there so I don't lose momentum, Things are progressing along pretty well at the moment :-). I reprinted the cam trigger housing in ABS, and printed a trigger wheel as well that locates on the 17mm stub of shaft sticking past the seal, as well as taking a small inserted piece of key-steel as a ferrous target. I'll wire it up and hook it to a drill, spin it up as fast as I can and see what it does. I'm hopeful I'll be able to just use the printed parts. Dunno if it'll hold up. Should be good for prototyping at any rate, and then easy to replicate in metal or something else stronger if I need to. Printed the cap with a little divot where it needs to be drilled and tapped for the sensor, but there will be a little bit of setup involved in getting it right, so I'll so that tomorrow when I'm a little fresher :-). Hopefully I can get the throttle body flange machined and welded on too! Then the last remaining bits will be getting the coil mount cut and folding it up, the water passages / plumbing, and a mount for the FPR. That will require a little bit of noodling to make it easy to mount and weld, but should be able to model something up so I can machine it and have it all sit in place nicely, hopefully.
  12. A couple more hours on the intake manifold side of this today, decided to tackle the cam trigger. I got hold of an old distributor from a carby one of these motors. It was missing pretty much everything, just a bare housing, shaft and advance weights still there. I attacked the shaft and housing with a hacksaw to get it down to just the bits I might need. I'm making this up as I go along, so I hope it works out ;-). What I'm trying to accomplish here is to mount a threaded hall sensor in such a way that it picks up a trigger signal once for every camshaft revolution. Ideally I'l love to mount something behind the cam wheel at the front, but there are no mounting points there, and although I could drill through into the head to make some, I'd enter a water gallery for sure and I don't like my chances of sealing that up afterwards. I thought about maybe picking up off the back of the cam via a custom mount that takes the place of the half moon seal, but there isn't a lot of room to work back there either. I also didn't like this idea in the end as the trigger disc would have to have a pretty small diameter, and as the trigger wheel you're reading gets smaller (so triggers are closer to the centerline of whatever is rotating) a small error in the point the trigger is detected can actually be a pretty large number of engine degrees. The dizzy rotates in line with the cam, so if I can make something tidy here, its about the best compromise I can think of. Looking at the cut apart dizzy, I liked the look of those four pads radially spaced around the housing, I figured I could clean it all up, drill and tap those for M4, and make a cap that attaches on and holds a threaded hall effect sensor. The shaft itself can then be tidied up, drilled and tapped for M6 to give a good mounting point for some sort of trigger wheel (with just one tooth :-). Some time on the lathe and drillpress later, as well as a quick 3dprint to prototype a cap (will either print the final one out of some material that can handle the jandle, or machine out out of aluminium), and I think it's going to work. Not as tidy a solution as I'd really like, and you need to be aware that if you ever remove and refit it, you'll need to reset the base timing most likely, but I think it'll work :-). The trigger disc can just be made out of a bent piece of steel, will make something tidy for it. There is a bit (I'd like more!) space to squeeze a coolant neck out next to it aswell.
  13. Have been working on this a bit in the holidays, getting the inlet manifold work done. I've thought a couple of times that I should have just bitten the bullet and made an inlet manifold from scratch, with the amount of work it is to get this one sorted properly for a RWD application... But I'm this far in, so I'll finish it off. Most obvious jobs are to swap the throttlebody onto the other end of the plenum, and reroute the coolant setup. I've seen a few RWD setups with this manifold where the thermostat housing is left where it is and a hose is run to the front of the engine, but as this is a RWD head the waterjacket inlets in the head are setup for the coolant to flow out of the front of the head. Leaving it like it is, with it at the back, risks a hot-spot in the front of the head. The factory Starion setup has the radiator bypass from beneath the thermostat (which is at the front of the head) pass through the inlet manifold to keep it warm. This helps with the fuel film problem TBI setups suffer from as you've got so much area for the fuel to pool onto. As I'm all about the port injection now, I don't need that, but there still needs to be a radiator bypass, so I'll run that from beneath the thermostat housing (which I'll need to make) down the middle of the inlet manifold to the factory return pipe that runs along the back and side of the block into the waterpump. This factory pipe also has an inlet on it for the coolant return from the heater core. Lots of hacksawing, angle grinding, flap wheeling and powerfiling later it's looking pretty tidy back there. I'll need to weld a block on there which has a port to supply the heater core, but that'd the only fitting I should need there. I might put the ECT sensor there too, as it'll be out of the way. Hacked off the throttlebody flange and tidied it all up to make a plate to weld in place to seal it off. While I had all the power tools out and was making a mess anyway, I hack off all the little backets and bits and pieces I wont be using. Heaps more power filing later and it's all cleaned up. Found a good spot underneath where there is about 10mm of wall thickness to drill and tap to 1/8NPT for the IAT sensor. Sensor is a delphi unit with a DTM 2-pin connector. Has a brass body where it seals to the plenum, but a plastic housing after that with an exposed tip. Should be nice and fast reacting for the temp swings turbo's produce, and not suffer too badly from heat-soak (I hope!). Should be pretty out of the way down there. That space is going to be quite tightly packed though, with the radiator bypass tube, and the outlet from the fuel rail back to the pressure regulator running through there also. Plus, the wiring harness. It'll have quite a bit going on in this space. 4 injectors, 4 coils, ECT, IAT, MAP, EFP , Crank + Cam triggers and Ethrottle all within that area. Will be a fun harness to build :-). The injectors (also ones I've had for years) are EVO VII 560cc's. They've had single spray pintle caps put on them to work better with an 8V setup, and so I can orient them like in the picture with the plugs heading underneath, instead of directly on top. The reason for this is because of where I'm going to mount the coils. Pretty simple 3mm aluminium sheet metal backet picking up of existing mounting holes. Will get it profile cut and bend it up at work. Has mounting for the MAP sensor underneath also. Coils are knockoff GM581's, which I've not used before, but should hopefully be up to the task. I could only buy a pack of 8 of them, so I've got 4 spares, hah. It's bloody humid today, so we're off to the beach for some FnC for dinner and a bit of a swim.
  14. Nah mate, Black one I'll have forever I think. Can't explain it, but have a good connection with that car. I've been collecting parts still, and I've got pretty much everything I'll need to do a really nice GSR-V replica. 12V DASH head, all the big driveline, later model interior... Should be good :-).