Bakkums Posted July 6, 2017 Share Posted July 6, 2017 What's the progress at the moment? Would like a update maybe with sound Quote Link to comment Share on other sites More sharing options...
andybp Posted July 6, 2017 Author Share Posted July 6, 2017 1 hour ago, Bakkums said: What's the progress at the moment? Would like a update maybe with sound There's not much of an update I have fitted the new adapter I made for the fuel return system as the old one was in the way of the throttle bodies and finished welding the mounting bracket for the throttle servo I am currently modifying the crankcase breather pipework which will go through a catch can and then be vented to atmosphere also I'm making a manifold to bring all of the separate takeoffs from the throttle bodies back to for the vacuum for the brake servo and map sensor but it's not finished yet as sadly I have to work for a living here's a few pics of the test fitting to keep you going 4 Quote Link to comment Share on other sites More sharing options...
Stutopia Posted July 6, 2017 Share Posted July 6, 2017 It all sits lower than I expected, testament to your meticulous work no doubt. I thought it might interfere with the bonnet. 1 Quote Link to comment Share on other sites More sharing options...
Keyser Posted July 7, 2017 Share Posted July 7, 2017 Keep up the good work - Shame work gets in the way, O well we will just have to be patient. 1 Quote Link to comment Share on other sites More sharing options...
andybp Posted July 7, 2017 Author Share Posted July 7, 2017 19 hours ago, SuperStu said: It all sits lower than I expected, testament to your meticulous work no doubt. I thought it might interfere with the bonnet. The velocity stack nearest the front passenger side is very close to the bonnet I might have to modify that one I need to stick my inspection camera under there with the bonnet shut to check Quote Link to comment Share on other sites More sharing options...
Bakkums Posted July 7, 2017 Share Posted July 7, 2017 Looking very nice. Will just wait for the next big update. You put some good engineering in it. Quote Link to comment Share on other sites More sharing options...
andybp Posted July 8, 2017 Author Share Posted July 8, 2017 made the manifold for the vacuum today also fitted and adjusted the throttle position sensors still need to make a short loom for the throttle position sensors and get some hose for the vacuum setup also for the crankcase ventilation I'm hoping to attempt to start the Z on throttle bodies sometime this week. 4 Quote Link to comment Share on other sites More sharing options...
andybp Posted July 8, 2017 Author Share Posted July 8, 2017 I've been editing some of these posts as all of the photo's have gone due to photobucket being a pain but some of the photo's I've replaced from imgur seem to be missing though if I edit the post the outline of the photo is there but I can't be bothered to do anymore so it will have to stay as it is. Quote Link to comment Share on other sites More sharing options...
andybp Posted July 9, 2017 Author Share Posted July 9, 2017 The missus let me play with the Z all day and it was a frustrating but ultimately a very good day. The drive by wire was a real pain to setup but that was just me not used to the ECU software still needs a little more work but the throttle bodies now open and close fully with the accelerator pedal fitted the manifold I made for the vacuum but forgot to add a takeoff for the fuel pressure regulator never mind will sort it tomorrow. found some clear silicone hose for the vacuum pipework not what I want to use but it will do for now Made up the loom for the throttle position sensors even used waterproof connectors and when the missus still hadn't come to get me I bolted the throttle bodies down thinking to myself any minute she'll tell me dinners ready and I'll have to stop and then I'm standing there looking at thinking other than the crankcase ventilation and the vacuum for the FPR I'm done so I thought just for a laugh I'll turn it over see what happens I think the petrol head gods were with me it only bloody started first time one clamp was letting in air and needed tightening and they need balancing but overall bloody brilliant. sorry I've got no pics or video my phone is completely dead but will correct this tomorrow 8 Quote Link to comment Share on other sites More sharing options...
Bakkums Posted July 9, 2017 Share Posted July 9, 2017 (edited) That's some good news. Now i can't sleep because I need to hear everything run Hope you can get the balance right and take a drive with it in the best couple of weeks. Keep up the good work and the updates. Edited July 12, 2017 by Bakkums 1 Quote Link to comment Share on other sites More sharing options...
Keyser Posted July 10, 2017 Share Posted July 10, 2017 Nice one mate Looking forwards to seeing it Quote Link to comment Share on other sites More sharing options...
davey_83 Posted July 10, 2017 Share Posted July 10, 2017 That's pukka, exciting. Sorry if you've said, what are you setting the for to? Is it adjustable. Quote Link to comment Share on other sites More sharing options...
andybp Posted July 10, 2017 Author Share Posted July 10, 2017 13 hours ago, davey_83 said: That's pukka, exciting. Sorry if you've said, what are you setting the for to? Is it adjustable. "what are you setting the for to?" I think this is a typing error if not I have no idea what you're talking about Quote Link to comment Share on other sites More sharing options...
andybp Posted July 10, 2017 Author Share Posted July 10, 2017 this is the finished vacuum manifold the mounting bracket needs some tidying had to remove the velocity stacks for balancing and this is a little video clip showing it in operation look out for the weirdo peering through the windscreen. VID_20170710_175205.mp4 7 Quote Link to comment Share on other sites More sharing options...
glrnet Posted July 10, 2017 Share Posted July 10, 2017 Oh my goodness, that sounds stunning. 1 Quote Link to comment Share on other sites More sharing options...
davey_83 Posted July 10, 2017 Share Posted July 10, 2017 Stoopid phone, I meant setting for the adjustable fuel pressure regulator..... 1 Quote Link to comment Share on other sites More sharing options...
andybp Posted July 10, 2017 Author Share Posted July 10, 2017 13 minutes ago, davey_83 said: Stoopid phone, I meant setting for the adjustable fuel pressure regulator..... makes sense now it was set to about 51 psi with vacuum pipe off which is stock fuel pressure I believe Quote Link to comment Share on other sites More sharing options...
SpeedyZee Posted July 10, 2017 Share Posted July 10, 2017 Just come across this thread. Amazing work @andybp Just downloading the video to have a look at. 1 Quote Link to comment Share on other sites More sharing options...
andybp Posted July 11, 2017 Author Share Posted July 11, 2017 had some time to play again today having some problems with getting the idle stable something I need to investigate further Had a bit of a scare earlier I had to disconnect one of the Throttle position sensors to refit the velocity stacks but apparently I didn't reconnect it properly which resulted in the engine going full throttle after startup luckily the engine was fully warmed up but the noise it made was out of this world absolutely awesome I had to make sure there was no one about when I got out of the Z due to my aroused state took me an hour to discover what the problem was as it was saying there was a problem with the servo power not the sensors turns out it disconnects the servo power when it detects a sensor fault never mind all fixed now just need to sort out the idle issue and then I can get on with tuning. 1 Quote Link to comment Share on other sites More sharing options...
Stutopia Posted July 11, 2017 Share Posted July 11, 2017 Epic safety feature, "something's loose, best go WOT" 2 Quote Link to comment Share on other sites More sharing options...
andybp Posted July 11, 2017 Author Share Posted July 11, 2017 25 minutes ago, SuperStu said: Epic safety feature, "something's loose, best go WOT" Yea that was my fault the way I had it setup but you live and learn at least this time around 1 Quote Link to comment Share on other sites More sharing options...
SpeedyZee Posted July 12, 2017 Share Posted July 12, 2017 On 4/16/2017 at 19:35, andybp said: Progress is slow due to many reasons mainly the speed of 3d printing and having to work for a living but I have cut down the inlet runners 30mm off each side and made the velocity stacks 30mm shorter from 105mm to 75mm also the first red one I printed was downloaded straight off the internet and was designed for a 45mm Weber carb so the mounting holes were off and the face was flat so I've modified the design making a new mounting flange with a recess in it to suit the throttle body I have only made two velocity stacks so far another is on my printer right now so will hopefully all be finished in a few days @andybp what kind of 3D print is that ? Is it Fused Deposition printing ? Ie a melted filament type 3D printer then I've actually tried using such prints using PLA filament in the engine bay before and I'm a afraid the print deforms with heat. I'm not sure if ABS filament would fair any better in the long run. Or were you just using the 3D prints as prototype pieces to be replaced later with something else ? 1 Quote Link to comment Share on other sites More sharing options...
andybp Posted July 12, 2017 Author Share Posted July 12, 2017 5 hours ago, SpeedyZee said: @andybp what kind of 3D print is that ? Is it Fused Deposition printing ? Ie a melted filament type 3D printer then I've actually tried using such prints using PLA filament in the engine bay before and I'm a afraid the print deforms with heat. I'm not sure if ABS filament would fair any better in the long run. Or were you just using the 3D prints as prototype pieces to be replaced later with something else ? The red prototype was in PLA but the final ones in yellow are in abs due to it's higher temperature resistance and higher melting point also I printed them in low quality leaving a rough surface finish as I was intending to coat them in an Isophthalic resin to protect them Quote Link to comment Share on other sites More sharing options...
SpeedyZee Posted July 12, 2017 Share Posted July 12, 2017 Cool, yeah ABS resin'd up should be resilient enough (fingers crossed) 1 Quote Link to comment Share on other sites More sharing options...
andybp Posted July 13, 2017 Author Share Posted July 13, 2017 Minor update I've been having trouble getting a stable idle speed I believe due to the servo hunting trying to maintain a particular idle rpm I now have it at a fixed throttle position this is working much better also the MAP signal is jumping around a lot so I fitted a 1mm restrictor in the line to the map sensor this helped but it was still too unstable so I have now put a Tee into the line and connected it to an old catch can which I have sealed up this is acting as a damper and seems to have solved the problem the only issue I can see with this is that it will reduce the accuracy and potentially cause a lag in the pulse getting to the sensor I did try a smaller vessel as a damper but it was having minimal effect. The other issue I'm having is balancing the throttle bodies between the left and right banks this is because I don't have accurate enough adjustment as I used standard threaded rod for the linkages so my smallest adjustment is a 180 Deg turn on one of the M4 rose joints which equates to about a third of a mm seems like a tiny amount but with itb's that's a lot Quote Link to comment Share on other sites More sharing options...
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