Larry, Valid question and valid thoughts in my mind. For whatever reason I did it, I also lowered the cowling in the front of my KR. It slimmed the front profile. I am now wondering how that helps or hurts cooling. But, I can say it pretty much negates the ability to put a compufire ignition on because the bulge would look like I glassed a coffee can to the top of the cowling. It's interesting how a person, me in this case can do something and then later ask myself why I did that ? How do I say this? I am not trying to just make more power as much as I am trying to make sure it produces the power it should ro the power it needs and do it safely and efficiently? I have always hated my Zenith carb. I have always questioned the effect of low voltage spark on a magneto and how that affects power. I know in a water cooled big bore stroker motor I built in another application going to a high energy ignition made a major difference. So, I have decided to revisit a lot of things because after all, it's called experimental for a reason. If a person put a 2180 on an actual dyno as built, will it actually produce 70 or 76 HP as claimed? Also, just because you have the power it doesn't mean you use all of it all the time. My overzealous ideas sparked a build of what became a 600 hp stroker motor in my 12,000 lb vintage Airstream motorhome restoration. Do I use all that hp and torque ? NO. My gearing and the fact that after about 65 mph I simply don't feel comfortable going any further. But, the resulting increase in efficiency and regearing allows the motor to actually run cooler and get better fuel mileage then it did with less than half the HP it came with. Now it may actually be more related to the better ignition, better cam and many other factors but, I think the engine doesn't labor as hard as it used to when it had less power. Oh, I also added a wide band O2 sensor and a digital AF sensor and tuned it to a 12 to 14 to 1 AF to insure I was running the correct AF not only at idle as most carbs can only be set to, I have tuning rods in the qjet that allows tuning AF at typical cruising rpm. Of course we have that in aero carbs but not so much on a Zenith. Maybe some do it but I dont feel safe leaving the mixture lock on a Zenith. I have a zenith on my Onan generator and after lots of frustration and rebuilding I got sick of it. So, that lesson makes me uncomfortable leaving it on my KR. Also pulling the heads off and seeing them affirmed that I will not fly behind a Zenith again. Not when there are far better and safer options. I will also add a wideband O2 and digital AF guage sensor to my 2180 and use that in conjunction with lean of peak settings to ensure I am getting the best power and ensuring longer life in the 2180. Because like my 496 engine build, I think there are a lot of things like SDS CPI and even the next step of SDS EMI That can now be added to a 2180 or a Corvair as well as your 0-200 continental to bolt on far better fuel systems, ignitions systems and add not just better power but more reliable power at altitude and temperatures as well as safety. A lot of what I am doing is thinking and reaching out to you all who have stayed very active in order to learn again and learn more as well as raise the discussion. Because some of my thoughts may be pretty dumb or not applicable. But, maybe there are some out there in the KR community unaware of these available newer technologies that are now affordable to us just like how autopilot , EFIS, glass cockpits and other things were not really affordable in the past or even available. There are a lot of people on here a lot smarter than me and more experienced. But there are also some like me. We can learn from those of you that know. I am always the student of the professors.
Jeff Jeff On Wed, Nov 16, 2022 at 8:47 AM Flesner via KRnet <krnet@list.krnet.org> wrote: > On 11/15/2022 9:57 PM, Jeff York via KRnet wrote: > > Looks like a high current bridge rectifier > > > > Jeff > > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > These are used in golf cart chargers (not sure which part number) and > they do fail at times. One question on all this extra power you hope to > produce. Will you have enough cooling to handle it? Extra power = extra > heat. Seems like most VW installations have cooling issues. Just > wondering................... > > Larry Flesner > > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet >
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