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Post by FFS Corders on Nov 19, 2019 12:26:14 GMT
Vvt block idea sounds good. Bye bye S2 bumpru
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Post by josho on Nov 19, 2019 16:13:41 GMT
Vvt block idea sounds good. Bye bye S2 bumpru Many compress, so power, wow. |
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Post by dickie on Nov 20, 2019 22:21:23 GMT
Try an 80 thou Mk2 head skim with a Mk 2.5 block,
It can be done with Piper 285 reground cams ( do not up the rev limit too much till you get rid of the shims and go SUB )
I seem to remember getting about 250 PSI compression at cranking on mine. ( that was with a valve de shroud and chamber vol balance )
If you graft your scrap Mk 2 throttle quadrant onto the ITB shaft you get OEM throttle opening rate and angle, I am also using the OEM TPS on an adaptor and all the Mk 1 sensors.
Access to a toolmakers lathe is handy ( DIY flywheel lightening as well, ) balanced on a home made mandrel by tuning shop.
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Post by josho on Nov 21, 2019 11:24:18 GMT
Try an 80 thou Mk2 head skim with a Mk 2.5 block, It can be done with Piper 285 reground cams ( do not up the rev limit too much till you get rid of the shims and go SUB ) I seem to remember getting about 250 PSI compression at cranking on mine. ( that was with a valve de shroud and chamber vol balance ) If you graft your scrap Mk 2 throttle quadrant onto the ITB shaft you get OEM throttle opening rate and angle, I am also using the OEM TPS on an adaptor and all the Mk 1 sensors. Access to a toolmakers lathe is handy ( DIY flywheel lightening as well, ) balanced on a home made mandrel by tuning shop. Got maruha cams with subs to go in and won't be skimming quite that much off  The itbs I have are OEM Toyota Levin itbs and have a great quadrant already. However on my old car I had bike itbs and did what you said and it worked great If I were to go lightened flywheel I'd most likely get an aftermarket item. Thanks for the info though |
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Post by FFS Corders on Nov 21, 2019 11:42:24 GMT
I still have your old matsuspedu lightened FW  |
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Post by josho on Nov 26, 2019 22:18:02 GMT
Perks of working in a garage now pt1. At lunchtime today I pulled the mighty mazda into the workshop, wound the lift rubbers all the way down so I could fit them under the car. Lifted the mighty mazda up, making it a flyin' roadster  I popped the bumper off and sent it up so I could get underneath. I fitted an OEM air guide that's been sat away in the depths of my lockup and also a good condition OEM undertray that was given to me for free by the guy I got my red boot lid off.  [/url] I also took the time a few weeks ago to fit an AEM uego wideband to the car in preparation for MS3 times.  [/url] Both of these bits of work were made so much easier having a ramp to work on xD Stay tuned for an exhausting saga of epic proportions. |
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Post by FFS Corders on Nov 27, 2019 14:05:34 GMT
Do a racecar
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Post by wannabe on Nov 27, 2019 21:09:57 GMT
Do those under-engine air guides do much??
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Post by josho on Nov 27, 2019 23:21:46 GMT
Do those under-engine air guides do much?? They certainly do, it directs as much air as physically possible through the radiator, which is very good for cooling xD Also great for puddles and stopping stones and other debris getting acquainted with your belts  |
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Post by josho on Nov 27, 2019 23:35:02 GMT
Perks of working in a garage pt2. Now yesterday I teased a saga of epic proportions, exhausting proportions. Because I bought, a cat back which has no brand on but is beautifully made and Tig welded together, and a manifold which has no brand and is beautifully Tig welded together. I am yet to fit them as today's lunch was taken up by me fiddling with my roof/door/windscreen seal. I chopped a chunk out as per Atlexs pictorial instructions and it seems to have cured my wet seat problem. The one to do with rain anyway but that's enough of that. I suppose I should share some photos with you all!  Its rather pretty, however the keen eyed amongst you will have spotted something amiss.  The Flexi flexed a little too far and broke off. However this is a perks post so of course it's being fixed up all pretty so I can get it on the car. I shall upload some photos of the glorious catback tomorrow once I've cleaned it up a little. All for now Josh. |
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Post by wannabe on Nov 28, 2019 12:47:45 GMT
Nice exhaust! Do those under-engine air guides do much?? They certainly do, it directs as much air as physically possible through the radiator, which is very good for cooling xD Also great for puddles and stopping stones and other debris getting acquainted with your belts I will have to find one and get it bought! lol |
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Post by josho on Jun 5, 2020 15:45:40 GMT
I am actually the worst at keeping up to date with this. I still haven't gotten photos of the sweet catback, and I still haven't fitted it or the manifold, mainly due to a little thing going on called Rona, she's a biznatch. I have been furloughed for the past couple months, and have taken the time to install and start to tune my MS3 mini ECU. It wasn't without its hiccups, mainly the year of car the wiring loom and gubbins are from are a late MK1 where Mazda got freaky with their wiring, and as such the fuel pump didn't prime when turning on the ignition. Messed about a bit, spoke to the ever helpful folks at Bofi racing, they told me to change the jumper for the fuel pump, lo and behold the pump primed when turning on the ignition. I fired the car up and it settled into a somewhat unsteady and lean idle, I threw some more fuel at the idle area of the fuel ve table and checked over the car making sure there was nothing weird happening. After confirming that the car in fact was okay and running on the ms3 I did a little victory dance and immediately set to work being a Yobbo and playing with launch control. After amusing myself for a few seconds with it set at just 2000rpm I had a stern word with myself and reluctantly turned it back off again, for now I've taken it for a couple of drives with the laptop plugged in and all seems well, I've been letting autotune do it's thing and stepping in to smooth the table out a bit. The plan of course is to run the Toyota itbs but until I can buy the manifold I shall amuse myself with getting a solid tune on the standard intake. Also, it is WAY faster than on the standard ECU. I think there was something wrong with the factory stuff as the car would not run any richer than 15:1 at any point and felt very flat down low. Now on the ms3 the AFRs look far healthier than before and it is punchy as all heck down low and up to the conservative and low 6500rpm limiter I've set for now. With the lockdown restrictions easing a little more I may venture out on a slightly longer excursion at some point soon. All for now, photos of stuff next time I promise. |
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Post by FFS Corders on Jun 5, 2020 17:17:46 GMT
Yay progress times
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Post by josho on Dec 20, 2020 13:48:02 GMT
December update.Hi all, an update of sorts. Had some events happen in my life that put a hold on progress on the Mighty Mazda, I did get time recently to get over to the lockup and make sure it still runs and I'm happy to report that it does. Also I have a new puter now which actually has a functioning battery so I'll be able to actually go for a drive and tune the car on the fly. Something I was not able to do with my old and busted one. I believe I now have all the required parts to fit the ITB's to the car so keep an eye out for that. I have a few days off soon so I'll try and make a start with that. I also now work somewhere new and exciting. Very challenging too but its brilliant. I'm still a mechanic but I work on much nicer stuff now! Photos of the delicious new ITB setup will follow. And maybe, just maybe, photos of the installation process All for now, JoshO out.
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Post by FFS Corders on Dec 20, 2020 22:41:07 GMT
Yaaas do an ITB fren
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le sigh
Jul 15, 2023 20:03:52 GMT
le sigh
Jul 15, 2023 20:03:52 GMT