~Slideways~ Posted September 8, 2021 Author Share Posted September 8, 2021 13 hours ago, chris r said: What length do the injectors need to be? I have some honduh ones which look to be shorter and may work I'll measure them and see, would be good to know so I can maybe grab something from PaP. Back at work now so see you in 6 months 1 2 Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted September 9, 2021 Share Posted September 9, 2021 Unsure if helpful but C5 corvette's have fuel filter with a regulator built in. 3 Quote Link to comment Share on other sites More sharing options...
kws Posted September 9, 2021 Share Posted September 9, 2021 I believe E46 bmw do too, some models at least. 2 Quote Link to comment Share on other sites More sharing options...
thegreatestben Posted September 9, 2021 Share Posted September 9, 2021 Yeh and Z3 - vacuum referenced reg on these. Can't seem to find specs as easily as C5 one. This article was interesting though - https://aeromotiveinc.com/aeromotive-corvette-filter-regulator-combo/ Quote Link to comment Share on other sites More sharing options...
Themi Posted September 10, 2021 Share Posted September 10, 2021 Someone sent me a screenshot of your discussion regarding a 1.5l ZL-VE vvt head on the b6 block. Well, I did it and will say it is a lot of hassle. Fun learning process but heaps of work. I've got videos of it running, currently sitting nfg in the garage due to lack of funds/time/motivation. I've got a second head sitting nearby which was going to get new valves, cams sent for regrind etc. If you are actually interested in the process there are so many things I learned along the way which I wish I knew before I started and would be happy to share. It took 4age itb's to replace the intake which faces the wrong way, new exhaust manifold because the stock one points straight down, new cooling setup as it was fwd, all wiring was different, oil feed had to be changed from the one in this picture too.https://drive.google.com/file/d/11gpFfCK5PV8uKShx7Vq8-_dCq--VkD4v/view?usp=sharing Note in the video that the low idle screw was unwinding hence why it starts bogging. It was also not tuned at all. Running it on a Speeduino too, UA4C from WTMtronics. Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted September 10, 2021 Author Share Posted September 10, 2021 Thanks guys, definitely an option having a reg/pump setup. Also brazing an outlet onto the bike fuel rail. Alternatively once I am decent at Fusion 360 I could try make the factory injector port into the 3d printed manifold/adapter. On that, amazingly I found a someone has uploaded a GrabCAD model of the intake manifold for the 1.6 'Miata'. This saves heaps of time. The format was a SLDPRT which the free version of Fusion 360 cannot import, so I used the desktop version of GrabCAD workbench to save it as a few different formats. A STEP file format worked and I had something usable in Fusion 360. I was playing around with Fusion 360, what an awesome tool! Spent about 1.5hrs playing around with it and had something resembling an adapter to fit the bike ITB's. Then the laptop/fusion crashed lol... This is what it looked like when it froze and didn't come back. oh well... good practice. 1 Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted September 10, 2021 Author Share Posted September 10, 2021 15 minutes ago, Themi said: Someone sent me a screenshot of your discussion regarding a 1.5l ZL-VE vvt head on the b6 block. Well, I did it and will say it is a lot of hassle. Fun learning process but heaps of work. I've got videos of it running, currently sitting nfg in the garage due to lack of funds/time/motivation. I've got a second head sitting nearby which was going to get new valves, cams sent for regrind etc. If you are actually interested in the process there are so many things I learned along the way which I wish I knew before I started and would be happy to share. It took 4age itb's to replace the intake which faces the wrong way, new exhaust manifold because the stock one points straight down, new cooling setup as it was fwd, all wiring was different, oil feed had to be changed from the one in this picture too.https://drive.google.com/file/d/11gpFfCK5PV8uKShx7Vq8-_dCq--VkD4v/view?usp=sharing Note in the video that the low idle screw was unwinding hence why it starts bogging. It was also not tuned at all. Running it on a Speeduino too, UA4C from WTMtronics. Awesome! The head looks so narrow in the engine bay! Really interested to see what sort of performance gain you get when its tuned. I'll persevere with the B6 head for now, funny though because the ZL and ZM heads could basically be like a majorly ported B6. I've seen the gasket comparisons of port size and its huge! EDIT: you should make a build thread about your car? Quote Link to comment Share on other sites More sharing options...
Themi Posted September 10, 2021 Share Posted September 10, 2021 The head really is tiny, ports are massive and port angle is a bit steeper. I don't want to hijack the thread so I'll leave it at this photo, but it's my favorite one showing just how compact the zlve head is! Not having the front waterneck was big too, as well as no AC and manual rack. 7 1 Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted September 10, 2021 Author Share Posted September 10, 2021 Fuck yeah! I wonder how much effect the VVT will have? Quote Link to comment Share on other sites More sharing options...
Themi Posted September 10, 2021 Share Posted September 10, 2021 19 minutes ago, ~Slideways~ said: Fuck yeah! I wonder how much effect the VVT will have? Really tough to say. ZLVE has 96kW@7000rpm 141Nm@4000rpm with 1.5L and 9.4:1 comp B6DE has 90kW@6500rpm 136Nm@5500rpm with 1.6L and 9.4:1 comp My thinking was that higher displacement with the benefits of the ITB's and VVT will pull that peak torque lower, which is by far my biggest complaint of the 1.6L mx5. Additional responsiveness would be nice. Your gsxr ITB setup will be cool - bike throttles are probably the way to go and those look to be a very good bore size for the engine. I can attest the Speeduino is a good platform with lots of support. Look forward to seeing where that car goes. 1 Quote Link to comment Share on other sites More sharing options...
chris r Posted September 10, 2021 Share Posted September 10, 2021 Honda k series Injectors Overall length about 65mm Bottom o ring to base of fuel rail about 50mm Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted September 10, 2021 Author Share Posted September 10, 2021 1 hour ago, Themi said: Really tough to say. ZLVE has 96kW@7000rpm 141Nm@4000rpm with 1.5L and 9.4:1 comp B6DE has 90kW@6500rpm 136Nm@5500rpm with 1.6L and 9.4:1 comp My thinking was that higher displacement with the benefits of the ITB's and VVT will pull that peak torque lower, which is by far my biggest complaint of the 1.6L mx5. Additional responsiveness would be nice. Your gsxr ITB setup will be cool - bike throttles are probably the way to go and those look to be a very good bore size for the engine. I can attest the Speeduino is a good platform with lots of support. Look forward to seeing where that car goes. Just the fact that the 1.5L makes more power and more torque (earlier) is a good sign. Will the head change the compression ratio? 10 minutes ago, chris r said: Honda k series Injectors Awesome thanks for that, I'll hopefully be able to do some measuring tonight. 3 Quote Link to comment Share on other sites More sharing options...
Themi Posted September 10, 2021 Share Posted September 10, 2021 3 hours ago, ~Slideways~ said: Will the head change the compression ratio? About 9.9:1 according to my bad maths. Smaller combustion chamber volume on the zl-ve head. The shallower valves also supposedly increase knock-resistance. 1 Quote Link to comment Share on other sites More sharing options...
fuel Posted September 10, 2021 Share Posted September 10, 2021 Apologies if I missed this somewhere, but how did you adapt the timing belt drive to the ZL engine? Unless the ZL-VE is not timing chain like I'm led to believe. Quote Link to comment Share on other sites More sharing options...
Raizer Posted September 10, 2021 Share Posted September 10, 2021 6 hours ago, fuel said: Apologies if I missed this somewhere, but how did you adapt the timing belt drive to the ZL engine? Unless the ZL-VE is not timing chain like I'm led to believe. They are belt driven Quote Link to comment Share on other sites More sharing options...
Themi Posted September 11, 2021 Share Posted September 11, 2021 Sorry ~Slideways~ for hijacking the thread - spun off into my own one here about the ZL-VE head. I'll be watching your progress too! Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted September 11, 2021 Author Share Posted September 11, 2021 13 minutes ago, Themi said: Sorry ~Slideways~ for hijacking the thread - spun off into my own one here about the ZL-VE head. I'll be watching your progress too! You should be sorry, now I'm getting scope creep... 3 Quote Link to comment Share on other sites More sharing options...
~Slideways~ Posted September 11, 2021 Author Share Posted September 11, 2021 On 10/09/2021 at 14:45, chris r said: Honda k series Injectors Overall length about 65mm Measured the jzx100/1jz injectors and they are about 10mm longer than those Honda ones. So not much in it, the stock bike ones must be super short. But it'll be easy enough to make up some spacers for the mounts or to lengthen the mounts. Also, turns out that the fuel rails are a mirror image of each other so if I turn the 'back' rail around, the mounts line up fine with the 'front/main' fuel rail position, giving me an inlet and an outlet. So all I need is an inline regulator. You can see here that the mounts at the back in different positions, but its just a reversed/flipped rail. Bonus! The squirty end does sit a little far back though, will have to test and see if its a problem. These Toyota injectors should give a wide spray pattern, rather than a straight one. Just sitting on the engine doing some measuring. Looks cool though: 5 Quote Link to comment Share on other sites More sharing options...
tigerstyle Posted September 11, 2021 Share Posted September 11, 2021 It's possible there might be a chance to machine out the injector seat a further 2-3mm to get the injector pattern/angle into the port better? Really careful machining though, not DIY friendly. 1 Quote Link to comment Share on other sites More sharing options...
Popular Post ~Slideways~ Posted September 12, 2021 Author Popular Post Share Posted September 12, 2021 23 hours ago, tigerstyle said: It's possible there might be a chance to machine out the injector seat a further 2-3mm to get the injector pattern/angle into the port better? Really careful machining though, not DIY friendly. That's a possibility, I'm not set on the injector type yet but its good to know these can work. Ideally if I can find something with a longer tip that'd be best rather than making it more complicated than it needs to be. From what I can find, the factory b6 injector is 230cc. The 07 GSXR 600 has two sets: Primaries which have the longer tip and flow 225cc Secondary's which have a stubby tip and flow 460cc So in theory I'd be fine with the primaries if I can find a set. Alternatively I could use the ones I have which are from a 1jzgte VVTi which are around 370cc but may not work due to being a short tip and a wide spray pattern. Also did some more sanding, finding lots of imperfections and dings etc. It's a pain also because in its previous life it had lots of big stickers from events etc but when it was stolen they were apparently torn off with no regard for the paint underneath. So lots of clear coat ripped off which is a pain to have to sand back through all of the layers. After this I'll high fill prime it and do it all again. Then I figured out how to cut the flange model in half in Fusion 360 so I could print out a test (just the first few layers) to see if it was modelled correctly and lines up with the head. Man I'm impressed with this 3d printer! This isn't even at the highest quality, such a good printer for the money. 10 Quote Link to comment Share on other sites More sharing options...
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