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| monster turbo3 build | |
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| Tweet Topic Started: Jun 17 2011, 05:53 AM (36,529 Views) | |
| t3ragtop | Dec 31 2013, 06:13 PM Post #346 |
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Turbo3 and Twincam Tweaker
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the project is and always has been g10t based. first off, i have a great love of 3 cylinder engines that goes back 40 years to when i loved my vintage saab 2 stroke cars. secondly, i like the suzuki automotive design and saw room to improve it. the metro platform, or more correctly the suzuki sf413, benefits from the lighter engine and running gear in the way it handles. the front end is light and airy. you can really toss the 3 bangers around. even on the megasquirt interweb boards there is very little information on tuning a 3 cylinder engine and there are some tricks to using the megasquirt controller that way. first of all you have to trick it into thinking that it's running a 6 cylinder engine to run batch fire injection and run a lost fire ignition mode. that fires the plugs on each cylinder's exhaust stroke as well as their compression strokes. all 3 injectors squirt at once which allows fuel to be sprayed into closed intakesvalves on 2 cylinders each time. a lesser problem is that when you try to use the oem tachometer, it reads twice the rpm the engine is turning. the sequential injection mode is way more sophisticated. i said above that you had all the advanced injection features. what i didn't say is that the tuner studio engine management tuning application has really great modeling and graphics sections that you use for tuning. also what you can't see is that i've been playing turbo3 for a long time and i have put together a nice book of baseline data i've measured over the years. i took more than 2 years to chart heat loads, gather anecdotal information, to make hundreds of calculations, and to plan building this engine. i specified, researched, bought, and accumulated a bunch of parts over the same 2 year period. some parts i even superceded with better selections before i used the first ones. i know the percentage of difference between the outer cylinders' thermal loss and the center cylinder's. you can calculate and plot that without collecting empirical data. thermal quenching can also be calculated and when trim is applied to the fuel injection mapping virtually, you can see the tuning plots change graphically on the computer screen. i've used egt data before to make assessments of firedeck temps. and an egt probe is a great empirical tool. believe me i have designed and built the cadillacs of egt probes while working on early fluidized bed technology, but as an engineer there are some things that you want to be able to use math to look at. i was mentored as a young engineer by a true rocket scientist who always said that he didn't trust anything with wires. he had me running testing on shit night and day. most of the time he was way the hell off in left field but every now and then he'd get something that was pretty close. after wasting days, maybe weeks of time like that he'd find what was closest and start there. i worked really closely with another guy, a physicist, who would stare at the ceiling for a couple of days and then shoot me a rough sketch and a calculation of the results i should scale up for. his stuff was pretty close on his first shot. you do the math first. guess which guy's method i use to this day? ![]() and finally, i might deviate from the standard factory suzuki engine stuff and go a bit mad for pressing the performance mods, but i'm still enough of a purist to be horrified at the thought of abominating my suzuki variant with some honda engine swap. if i wanted a honda, there's a blue million of them out there and thousands of fast and furious turbo mods for them. you can just throw a double fisted wad of cash on the counter and buy anything you want for a honda. it's not what you buy, it's what you build.
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| ZXTjato | Jan 3 2014, 03:58 AM Post #347 |
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bass heads
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Best words I've ever heard! "It's not what you buy, it's what you build." Those are some true words right there. |
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| t3ragtop | Sep 20 2014, 10:56 AM Post #348 |
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Turbo3 and Twincam Tweaker
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this project engine has been sitting on my bench in the house for a couple of years. it has been in front of me everyday to the point where i hardly even take notice of it. my other projects have put it on the back burner long enough. before you get all excited that i might actually do something with it, it's the other way around. i'll never do anything with it. if you have envisioned building a proper turbo3 engine you may be interested in buying this one. i'll save you the sticker shock, if you're interested send me a pm. i have a ton of cash in this engine but everything is correctly built for 20 psi and 153 hp at an 80% fuel load. |
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| Mythstae | Sep 20 2014, 11:11 AM Post #349 |
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![]() I remember seeing that!
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| ZXTjato | Sep 20 2014, 02:50 PM Post #350 |
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bass heads
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Oh and I forgot to mention. No emission or safety testing where I live
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| evmetro | Sep 20 2014, 03:26 PM Post #351 |
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I hate to see you sell it. It seems like it is one of those projects that only you can see through with that famous T3R obsessive attention to detail. |
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| t3ragtop | Sep 20 2014, 07:33 PM Post #352 |
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Turbo3 and Twincam Tweaker
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ev, if i had completed this project it would have been bad to the bone. i used to restore and build saab sonett sports cars. i sold one of my favorites, a bright yellow 72 sonett on which i had customized the front end to run quad headlights from a cadillac. the car looked like gt ferrari from the front. that car weighed in just over 1400 pounds with a steel alloy v4 ford engine. converted to swift gt running gear (4 wheel disc brakes, turbo3 power unit, and suspension) it would have weighed in at 1200 pounds and put down 150 hp. the last few car projects have been hard on me so i need a break from that. i might take a year or 2 or i might go 5 or 6 years until i can retire. a lot of things can change with time and this whole geo metro/ suzuki variant scene might change up. i had a 20 year run with the vintage saabs and i've been doing metro verts for 12 years. if history repeats, it will be as hard as times 9 to find new parts for a metro in a short time. somebody else should use this engine so that it doesn't end up as a relic in some old guy's basement.
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| evmetro | Sep 20 2014, 07:56 PM Post #353 |
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I had a moment of vertigo when I saw this motor for sale, and a vision of that thing being lowered into a freshly restored chassis, and then reality started sinking in when I thought about the smog test here in CA... I know what you mean about how the Suzuki / Metro scene can change in a few years. Parts are already getting scarce, and newer subcompacts with comparable fuel economy will be available on the used market soon. I also doubt that many people will follow my lead on re engineering and retrofitting these cars with the latest in motor technology. |
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| CAMI MAN | Sep 20 2014, 10:20 PM Post #354 |
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CUSTODIAN OF THE MR.SUZUKI CONVERTIBLE
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Richard That motor would look nice in my car
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| High MX | Sep 20 2014, 10:36 PM Post #355 |
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I just sent you a PM. |
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| bkelly | Sep 21 2014, 03:16 AM Post #356 |
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Gear Head
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I say yes I want it, my budget says Im crazy and get it out of your mind. I would like to know where you got the timing sproket... Edited by bkelly, Sep 21 2014, 03:17 AM.
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| banginmetro64 | Sep 22 2014, 01:11 PM Post #357 |
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beautiful engine. i wish i could afford to buy it... |
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| Metromightymouse | Sep 22 2014, 09:06 PM Post #358 |
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Powdercoat Wizard
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Lifetime free powdercoating? |
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| punkozuna | Sep 22 2014, 10:47 PM Post #359 |
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If this is your hobby, I wonder what your work is like? My second job out of the Navy was at Cogeneration power plant that was part of a cement manufacturing plant. Besides waste heat out of the kilns, it had a coal fired, fluidized bed boiler. A very good time of my life work wise. Working with the engineer to try and get the boiler to work at its rated output was a blast. It was the mid-1980s and as far as I know it was the only coal fired boiler in Southern California because it could meet emissions standards and the others couldn't |
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| HavsCritiria | Sep 23 2014, 02:10 PM Post #360 |
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I don't know if it's the same one, but Ralco Engineering makes cam sprockets for these old Suzuki's You can buy them Here |
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6:44 PM Jul 10