I know, I know, this has probably talked about before. Sorry
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- CYBORG
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Re: I know, I know, this has probably talked about before. S
I do know that that temp of the runners are an indicator of weather a cyl is firing or not. And the exact temp tells how well its firing. When its compared to the other cyl. And to the mixture. So pre heating the fuel is not a long stretch.
1978 custom GL1000
1977 custom with 1200 engine
1985 gl1200
1977 custom with 1200 engine
1985 gl1200
Re: I know, I know, this has probably talked about before. S
True.CYBORG wrote:I do know that that temp of the runners are an indicator of weather a cyl is firing or not. And the exact temp tells how well its firing. When its compared to the other cyl. And to the mixture. So pre heating the fuel is not a long stretch.
I fully heat my manifold and the temperature differences can be "seen" and adjusted in various ways. I keep a data logger w/display attached to my #1 cylinder runner still. I no longer need it and have been lazy in removing it.
My direct experience in "runner" temperature observation and control comes from working in the plastics industry for a while.
I easily adopted the same method of "blanketing" the manifold/runner/nozzle configuration pictured from one of my production lines at the time to my manifolds runners.
It's a very effective means of applying heat to the runner generated from the cylinder head in my application. The external condensation mentioned earlier is even visible through the insulator below. Once heated, the cyclic processes of heating make the problem of condensing fuel disappear. The factory elbows provide the same function in application.
That radius downturn is a beast of burden on a single carburetor conversion at times when the atmospheric conditions allow for it, as mentioned. A dual carburetor conversion avoid this problem neatly.
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Re: I know, I know, this has probably talked about before. S
interesting
1978 custom GL1000
1977 custom with 1200 engine
1985 gl1200
1977 custom with 1200 engine
1985 gl1200
- Oldewing
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Re: I know, I know, this has probably talked about before. S
but don't we want more air in? Hot expands cold contracts..........
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06 GL1800 Road bike, as in Rode alot...
Sometimes I wrestle with my inner demons.........
Other times we just hug.......
Team 898
Team LTD 993
Team 76 R2B3
And always remember: beer has some food value--but food has NO beer value...
Re: I know, I know, this has probably talked about before. S
Yes to both.Oldewing wrote:but don't we want more air in? Hot expands cold contracts..........
- rcmatt007
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Re: I know, I know, this has probably talked about before. S
so I occasionally watch the "debates".... Wow! lots of hot air
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fellow moderators feel free to delete
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all it takes for evil to prosper is the want of a few good men to do nothing-Edmund Burke
The question is not how much time do you have, it is what you do with the time that you have Gandalf
"One of the greatest dignities of humankind is that each successive generation is invested in the welfare of each new generation." Fred Rodgers
"it takes 10,000 hours to become an expert" ancient saying
78 constantly modified/customized since 1978, BOTM June 2015 de-evolving this very moment viewtopic.php?f=30&t=65511
76 Ltd "cookies bike" ALMOST DONE
79 project, finished, FOR SALE
'86 1200 (Beth's)(FOR SALE) with motorvation sidecar (sidecar sold) , July 2017 BOTM
'17 HD Road king and 08 HD Heritage softail (Beth's) (FOR SALE). I guess you can say we have MBS
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Re: I know, I know, this has probably talked about before. S
I do agree that cooler air is better. But cooler relevant to engine temp
1978 custom GL1000
1977 custom with 1200 engine
1985 gl1200
1977 custom with 1200 engine
1985 gl1200
- 82aspy
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Re: I know, I know, this has probably talked about before. S
perhaps you would consider starting a new thread being very clear about your main point,Captain Midnight wrote:Aren't the factory elbow's heated for a reason?82aspy wrote:the application of heat, is only a non stock carb issue
mods had already chimed in on this one prior to it starting up again
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Yoda said, "There is no try or not try; there is only do or don't do."
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ngw quotes - \ "I will strip the beast" \ "the swingarm is just a hunk of metal" \ "gonna maybe ...dunno yet" \ "It's never done, thats the fun." \ "something about this site brings me back"
Yoda said, "There is no try or not try; there is only do or don't do."
=====================
ngw quotes - \ "I will strip the beast" \ "the swingarm is just a hunk of metal" \ "gonna maybe ...dunno yet" \ "It's never done, thats the fun." \ "something about this site brings me back"
Re: I know, I know, this has probably talked about before. S
I see no reason for another thread. The factory elbows are heated by Honda. It's a given, correct?82aspy wrote:perhaps you would consider starting a new thread being very clear about your main point,Captain Midnight wrote:Aren't the factory elbow's heated for a reason?82aspy wrote:the application of heat, is only a non stock carb issue
mods had already chimed in on this one prior to it starting up again
- 82aspy
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Re: I know, I know, this has probably talked about before. S
you wanna go there, be my guest, i ain't going there and am done with this threadCaptain Midnight wrote:I see no reason for another thread.
"there is a Darwinian element"
Yoda said, "There is no try or not try; there is only do or don't do."
=====================
ngw quotes - \ "I will strip the beast" \ "the swingarm is just a hunk of metal" \ "gonna maybe ...dunno yet" \ "It's never done, thats the fun." \ "something about this site brings me back"
Yoda said, "There is no try or not try; there is only do or don't do."
=====================
ngw quotes - \ "I will strip the beast" \ "the swingarm is just a hunk of metal" \ "gonna maybe ...dunno yet" \ "It's never done, thats the fun." \ "something about this site brings me back"
Re: I know, I know, this has probably talked about before. S
A balancing act.CYBORG wrote:I do agree that cooler air is better. But cooler relevant to engine temp
Colder air allows more fuel by volume.
Hotter fuel allows a faster, more efficient burn.
I don't think ...that my manifold significantly raises the charge temperature. Impossible for me to get my sensors in the middle of the tract to know though. I've extrapolated numbers, but that's logical guesswork at best.
If I leave the runner insulators on during the summer while using the coolant chamber to heat the plenum, I have hot-start problems. Too much heat. Consequently, the fuel was vaporizing during starting, causing such a lean condition as to starve the engine. Many incorrectly call this vapor-lock, which it is not. Last year, I left the insulators off while using the coolant chamber and the hot-start issue disappeared. Allowing the heat to radiate off of the exposed runners, and the fuel charge to slightly absorb some of the heat is how it works today.
I use the insulators during the winter. It gets cold here, of which I am right tired of.
I believe I've found good balance with mine.
Re: I know, I know, this has probably talked about before. S
I don't know what you're talking about Aspy.82aspy wrote:you wanna go there, be my guest, i ain't going there and am done with this threadCaptain Midnight wrote:I see no reason for another thread.
Relax.
Re: I know, I know, this has probably talked about before. S
Here's a shot of those temp sensors tied to the Hayden on runner #1.
I had a bunch of those sensors on a 8-pole, dual throw rotary switch at one time, because the Hayden temp reader only works with two at a time. I was reading all kinds of stuff.
I started off by writing all of that stuff down by hand everywhere I went.
"Hold On! I'm taking my reading's!"
I eventually tied a logger to it.
I had a bunch of those sensors on a 8-pole, dual throw rotary switch at one time, because the Hayden temp reader only works with two at a time. I was reading all kinds of stuff.
I started off by writing all of that stuff down by hand everywhere I went.
"Hold On! I'm taking my reading's!"
I eventually tied a logger to it.
- robin1731
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Re: I know, I know, this has probably talked about before. S
Technically the intakes are not "heated" from the factory. They will get residual heat from the heads. Heated, to me, means something that is attached to the intakes to bring them up in temp even more. Such as wrapping them with a coil of copper tubing fed from the cooling system. Just the same way you would heat a carburetor.
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1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
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Re: I know, I know, this has probably talked about before. S
Captain Midnight wrote:snip..................
Hotter fuel allows a faster, more efficient burn.
If this were the case race cars would heat the fuel before it enters the carb instead of cooling it. The cooler you can make the fuel and air the more dense the mix becomes. Which in turn makes more power.
Heating the fuel can cause the mix to become too lean. Creating other issues.
1976 Goldwing Super Sport
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder