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Post by Zed. on Feb 25, 2021 19:58:19 GMT
I've been thinking about the fuel system, will be using ptfe lined braided hose in place of the standard metal pipe & rubber hose, also routing through the car as opposed to underside. another issue is the tank has it's breather running through the charcoal-canister then to the inlet. this ends up with a pressurised fuel tank as it's not free-breathing (open the filler cap & it'll be pressurised & 'hiss') I'm removing this 'third' line and decided on fitting a seperate breather pipe with a 'rollover' valve in case of bad driving   this will be replaced, the standard 'breather' or vapour port & 'check-valve'.  easy to make an adapter to pipe from.... looking online theres several off-the-shelf fittings then I remembered that in my 'stash' theres a tub of fittings hidden forgotten for ~10 years...  and after a dig these were discovered.  some have suffered from a roof leak (the linbin was half full of water  )  anyway, these were remains of a collection from Trans Autosport (my hoarding again), all fittings are AN6 with the exception of one AN10 weld-on fitting.  they were un-finished (as rollover valves) so a ballbearing & nylon washer are to be fitted & the tube-end crimped then ready to use.  better view?  had to try a hose-end onto one, for scientific purposes obviously  next to make an adapter plate and decide on pipe routing to atmosphere, probably below the passanger side rear light as it's away from the exhaust. Rich. |
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Post by Zed. on Feb 26, 2021 18:41:46 GMT
a few days ago I recieved a set of Polyvee pulleys made for a Ford Pinto / Cosworth YB engine, these are handy as the crank pulley is identical to the one I've already modified to fit the Mazda crank so I was hoping the waterpump & alternator pulleys could be modified or adapted to fit also...  same diameter crank & waterpump pulleys with slightly smaller alternator pulley. Mazda use 3 bolts for the waterpump pulley hence the single bolt for the photo. I'll re-drill to fit and make a centralising spiggot.  another view of the waterpump 'fit'.  alignment looks good, I can work with this.  I might look into a smaller timing-wheel as this definately looks huge now!  tried a Mazda waterpump inlet manifold, it actually fits around the Pace oilpump so I might run this, then lower rad hoses are standard items...  I was going to make a steel manifold that would run straight out of the waterpump between the oilpipes but this works....  almost made for the job? Rich. |
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Post by Zed. on Feb 26, 2021 19:26:32 GMT
Jumped onto the wipermotor relocation...  I've an early (1989) wipermotor in the stash, these differ from the cars built ~mid 1990 as the motor points towards the centre of the car (& I believe is the LHD part?) so time to fit this on the drivers side....  measure once? used the mount plate as pattern, the bulkhead plenium has an embossing that suits the wipermotor so find where it looks good & in with the drill...  done...  used rivnuts...  great tool.  motor fitted, just clears the front brake reservoir!  crank loosely fitted...  need to extend the linkage...  removed the linkage to clean & grease...  the Capoccino screenwash reservoir is now in the way, it might be sold as I've different ideas..  'Finished' well, nowhere near but... Rich. |
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Post by Zed. on Feb 27, 2021 13:09:37 GMT
back on the Laminova cooler... when I bought it there were AN6 (~8mm ID) female-threaded waterside / end caps but I've decided to plumb in the heater pipework so ~16mm. new replacement ends are £35 + each so that's not happening... adapt, overcome & have a lathe  ordered a few 1/2" bsp brass 'tails (2 x 16mm & 1 x 19mm) so off to the lathe for some drill & tap 'fun'    as I'm altering the wiper-linkage I might as well refersh the wiperarm's 'spindles' with a clean & grease, this was thwarted by 'snaprings' holding the assebbly togther  one of the 'spares' from the 1989 car, are they same as '91???  the 'offending' snapring... I'd better check the others to see if theu seperate easily... off to the Shed of Dread I go..... Rich. |
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Post by Zed. on Feb 27, 2021 16:32:53 GMT
bit of lathe time...  bored to 19mm (1/2" bsp tapping size). ![]()  and faced.  cutting the thread the easy way (ish.)  deburr & chamfer.  action shot!   I'm undecided as to trimming the brass fitting's length as it intrudes into the cooler's end-cap slightly  Rich. |
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Post by dadbif on Feb 27, 2021 21:44:53 GMT
Trimming the ends will improve the flow.
Can’t believe you are thwarted by a jap snap ring 😜
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Post by Zed. on Feb 27, 2021 23:13:02 GMT
Trimming the ends will improve the flow. yup, my thinking.... ight assemble then trim in the lathe as a unit, saves measuring Can’t believe you are thwarted by a jap snap ring 😜 only gave it a cursery (cursing?) poke, been busy on other things... Rich. |
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Post by Zed. on Feb 28, 2021 23:44:32 GMT
had 5 mins playing earlier (between working on my t4's engine) so tried one of the ND 208mm discs on an NB hub / upright.  also fitted a caliper for scientific purposes  wanted to see what the pad-position was like in relation to the caliper-mounts and also the hight of caliper compared to wheel-face of the disc, its easy to measure but I like to visualise!  hummm...  the Compomotive ML's I have will (hopefully ) clear but I'm going to know for sure when the brackets land (in Memphis according to tracking) no other progress on the 5 as I spent all afternoon with the front off my t4 swapping a plastic coolant manifold...  f'kin thing....  Hitlers revenge.... Rich. |
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Post by Zed. on Mar 2, 2021 10:05:52 GMT
Shiney stuff landeth....  were posted (Fedex) Thursday morning and delivered this morning, not bad considering they were posted from California so ~5,000miles.... hermes take longer to find a parcel let alone deliver & thats from somewhere in the UK  suppose I'll have to test-fit a disc & caliper on a hub later Rich. |
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Post by Zed. on Mar 2, 2021 13:38:07 GMT
test-fit of a caliper on a bracket, sometimes it's good to play  fits nicely (didn't expect anything else).  this really isn't going to be visable once fitted, shame as the brackets & dogleg-spacers are nicely made... I'll clean up a hub / upright later & fit with a disc, more to follow... Rich. |
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Post by atlex on Mar 2, 2021 14:11:53 GMT
looks like a strong setup though :-)
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Post by Zed. on Mar 3, 2021 16:01:32 GMT
Wilwood / Boxmount photo update time...  test fit.  annoyingly, the sandblasted & painted hubs / uprights have started to rust! start as you mean to carry on I suppose...   plenty of room for cooling-air ducting to the centre of the disc & hub, far better design than the commonly available duct / heatshields that feed to the inner disc surface above the steering-arm...  the side of the bracket that'll never be seen once fitted....  first fit of disc / bracket & caliper on a hub & upright.  can clearly see the space for ducting, aparently Supermiata will be selling duct sections (or kits?) but I'll probably make my own, will see what happens in the future & finances etc.  all lined up with the caliper equilly spaced from the disc.  disc / pad position in caliper.  another (badly photographed) view... so, I'm pleased with the fit&finish, I might actually buy another 'new' pair of calipers as Wilwood have a 'spacerless' design - this all depends on UK availability (and if RallyDesign are going to stock them...) I'll have to fit to the car now as I've been using calipers as the excuse to not finish the underbonnet brakepipe plumbing. Rich. |
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Post by Zed. on Mar 3, 2021 17:22:36 GMT
now to jump (back?) onto the drysump oil resevoir / tank.  ebay again, this time a Pace products tank believed made for a Lotus Elise / Exige etc. (photo shows the SBD / Caterham type & other motorcycle-engined racecar tanks with the new one,m will be cutting up the taller tubular tank...) this was bought hoping it would be adaptable and fit around the Mx5's floor / bulkhead shape and allow me to use a tall / thin vertical tube type welded onto it so I can access the oil reservoir from underbonnet plenium around where the heater air intake was.  the offending area...  floor angles up to the bulkhead so the tank needs an angled side to sit foreward against the bulkhead.  another view, theres plenty of room 'behind' the dashboard (rusty frame is the dashboard's strengthener)  12" to the glovebox's hinge.  ~20 1/2" to the plenium floor & ~ 24 1/2" to the underside of the bonnet.  depth of plenium @ the heater intake.  depth of plenium @ the front / drain channel. so, now I've some ideas & dimensions to work from, as the plenium has a 'drain' channel this sorta means I need the tank to stand-off ~ 1 - 1/2" from the bulkhead if I'm to keep this feature...  the 'new' tank (lower left) in it's designed orientation, has a sloped side / base so a start? unfortunately the angle is too shallow...  so, turn it on it's side... I'll be chopping the pipe-stubs & filler off the square tank so these are not a problem.  sorta like this.  like this. the origonal mount 'feet' will be removed, I might save the small ones and use them to secure against the bulkhead, will see how things look...  the tubular tank is a little tall...  measure once & cut a little long...  trial-fit to visualise.  it'll ba a patchwork-quilt but if it works...  important photo as it shows the size of the tank's top, filler & oil inlet - hopefully I've taken these dimensions into consideration for the hight & fittment. now to finalise the trimming / fitting & re-measuring then to get it welded (something I've not got the equipment to do so ££££'s ) Rich. |
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Post by Zed. on Mar 3, 2021 21:40:58 GMT
more drysump thoughts, oil scavange from the tank to the pump needs to pass through the bulkhead somewhere I had origonally thought about sending it up & over the innerwing / chassis then back down to the pump but recently I've reconsidered this & now am looking at feeding through the bulkhead below the chassis and this area is double-skinned so I'll make a steel bulkhead pipe-fitting terminating about where the standard brake-flexi mounts (will be redundant as using a different routing away from exhaust heat!)  shows the area. more thought & about turns to follow... Rich. |
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Post by Zed. on Mar 4, 2021 18:06:36 GMT
Measure once cut twice...... well, not quite!  I'd decided the Lotus / lower tank would fit best flipped on it's back (with it's origonal oil scacange / outlet vertical) so got brave with a hacksaw and chopped the large mount-bracket off after this test-fit.  once the bracket was removed I got brave & narrowed the tank by 4" (100mm), by narrowed I mean chopped the origonal 'top' off, hacksaw again & nearly straight if I do say so!  another view, I'm impressed as it actually fits the car - not bad for an ebay guess-purchase! can see the baffle & de-aeriation tube that would have been horizontal / vertical in the Lotus install - that needs to come out as it's unnessessary....  sorta top view.  the origonal oil scavange outlet will be removed as it's not going to be used (too high) but it fits between the bodu brackets almost like it was designed to!  body mounts for heater / aircon & ecu.  bulkhead 'fit'.  even fits against the 'a' pillar strengthener (welded to the bulkhead but bolted to the 'a' pillar!)  another view.   from the passanger seat.... I'd narrowed it by 4" to lessen it's intrusion into the passanger compartment, something that brings passanger feet back towards the seat & will be uncomfortable? obviously this depends on taking passangers or if it does end up on a rally then navigators feet on a footrest... more photo's & thoughts to follow. Rich. |
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)
le sigh