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| CR for Alky | Login/Join |
DRR Pro |
What's minimum CR for alky use? | ||
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DRR Sportsman |
no such thing. Bill Huntington GZMOTORSPORTS.com gzmotorsports.com/video/PRI2010.wmv | |||
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| DRR Sportsman |
I think I read in the past lower compression engines will see a larger gain from gas then a high compression engine. Denis LeBlanc | |||
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DRR Top Comp |
I have ran a motor on alcohol with 9.4 compression and it picked it up big time. In my opinion lower compression motors will see more of a gain than high compression motors. Do not know what minimum is but it is lower than 9.4 I know that. https://postimg.cc/gallery/np3zpruo/ "Dunning-Kruger Effect" -a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge. Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue. 4X NE2 CHAMPION. 2020 TDRA NE2 Champion | |||
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DRR Pro |
I have heard of people running alcohol on 8:1 engine although I don't know why they would do so. | |||
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| DRR Pro |
Cool, for some reason I was under the impression (maybe bad info) that you needed at least 12:1 to make alky work correctly. This is going to save me a few bucks. I think the new engine is going to come in somewhere around 11.1-11.2 but haven't finalized the numbers yet. | |||
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| DRR Sportsman |
Cold weather starting is more of a challenge with lower compression (8.8-9.2). | |||
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| DRR Pro |
Phil - it ain't real easy with 14.5:1 either - LOL! Which I am now going to jump on my soapbox about. A few years back we took the Camaro to an early spring race in NC - now I am a NC boy so no disrespect here. It was cold Sunday morning and decided to take a little generator gas and dribble it in the carb to get her fired up. Well, she coughed, caught the cup on fire, burned my gloved hand and I dropped the cup which started a bit of a blaze. Between rags, fire extinguisher, jackets we got it out. Yes I was stupid - big time stupid but the other racers standing around just watching the inferno really pissed me off. And before you respond, if it happened to you - wouldn't you appreciate people jumping in and trying to help? I know if I see someone burning, I am not going to stand there and just watch. I'm done. | |||
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| DRR Trophy |
We run a low compression boat 454 my guess is 8.8 to 1, in a hard tail and Phil is correct, its hard to start. the combo has its days, some days it prints tickets and on a different day same track its all over the place... I blame it on compression sometimes but am not sure.. | |||
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| DRR Pro |
Maybe so, but I have seen more movement in alky due to humidity changes than anything else. On a given day we can move a few numbers between time shots and race runs just with the %humidity number moving around. | |||
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DRR Pro |
Next time try using carburetor cleaner. You don't have to get close. Open the throttle plates, spray down inside, then a little on the plates and start. It will work if it's 15° or 50° just as safely. The really light fumes light easily and you can even spray a little more on the carb/throttle body if it starts to die. Easy Peasy. ____________________________ 2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion 2018 Div4 Goodguys Hammer award winner | |||
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| DRR Pro |
Yep, that's what we normally do, but we had emptied what little we had in the spray can that morning which led to the other mess. Thanks for the input. | |||
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| DRR Pro |
I'm just glad you weren't seriously burned no matter what was used. ____________________________ 2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion 2018 Div4 Goodguys Hammer award winner | |||
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| DRR Pro |
If you have WD40 try spraying it down the carb while cranking with the ignition off for 3- 4 seconds and then turn the ignition on and crank again. WD40 burns really well. I couldn’t imagine trying to cold start my mfi engine without the primer plus system that it has. | |||
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| DRR Pro |
Thank you for the thought ~ Charlie. | |||
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| DRR Sportsman |
My 540" alki engine never had a problem being started with the bird catcher and mech. injection with just a squirt of regular gasoline any time of the year. Only had to do it on the first start up and it was good for the rest of the day. Check Your Tune Up.  | |||
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DRR Sportsman |
Minimum CR. I can't decide if this is relevant to today or not. Before WW2 while the depression was going on there have been stories of the model T being run on whatever might burn including kerosene, corn alcohol or the good stuff, moonshine. Model T compression ratio? 4.5:1 Dave Koehler - Koehler Injection - http://www.koehlerinjection.com Fuel Injection - Nitrous Charger - Nitrous Master Software - Balancing 99% of fuel injection problems are electric. | |||
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| DRR Trophy |
The Military 5 Tons we had in our Artillery Unit in the early 70's were "multi-fuel" Meaning they could or were supposed to run on nearly anything combustible....They were mechanical injection but I'm not sure on the C/R... | |||
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| DRR Pro |
Question is undefined,....need additional info. Fellow racer and servant of the Lord of Lords John 14:6 "Creekside Racing Ministry" MFI system, ProCharger Non-intercooled [6.02 @ 229 or 3.91/660' soft tune and killing power above 6K rpm] Ron Clevenger | |||
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| DRR Top Comp |
When I went to alcohol in 1998 they said you have to have like 14 to 1, you have to change oil every week, you have to drain all fuel and lines and fill it with marvel mystery oil, and on and on. Most of those are not true. I mean you certainly can change oil if you want every week..... Or you could just make sure you get it hot enough to evaporate the moisture out at end of the day. Works very well on lower compression no matter what old wives tales says. https://postimg.cc/gallery/np3zpruo/ "Dunning-Kruger Effect" -a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge. Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue. 4X NE2 CHAMPION. 2020 TDRA NE2 Champion | |||
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