[tcb] Re: Dual vs. Single
- From: Julie <julie.hey.ho.lets.go@xxxxxxxxx>
- To: "tcb@xxxxxxxxxxxxx" <tcb@xxxxxxxxxxxxx>
- Date: Mon, 16 Sep 2013 23:16:38 -0500
And I have no idea what 4 way prong plugs are. I guess I will do some
research.
On Sep 16, 2013, at 10:36 PM, Duncan <whocanduncan1@xxxxxxxxx> wrote:
> If you are really concerned, buy some very expensive 4-way prong plugs by NGK
> or the like. Had a pair on my Honda going over the peak above Loveland, CO
> and had no problem whatsoever. But I also had two pair of normal plugs in the
> kit just in case.
>
> Take two sets of spare plugs but don't rejet.
>
> Duncan
>
>
>
> -------- Original message --------
> From: sammie smith <bugcollections@xxxxxxxxxxxxx>
> Date: 09/16/2013 9:52 PM (GMT-06:00)
> To: tcb@xxxxxxxxxxxxx
> Subject: [tcb] Re: Dual vs. Single
>
>
> Julie: You are basically correct. However, unless you are running some
> large carbs, such as dual weber 44s I don't think you are going to notice the
> difference, e.g. for a PIC 34, stock carb on late model dual ports, you might
> notice some decrease in power at high altitudes, like 8-9,000 feet.
> But trying to rejet the 34 to compensate is not going to help much. If I
> were going to drive continuously at high altitude and running weber 44s I
> would jet them for that altitude. I live at 350 feet above sea level and
> jetted my 44s for that altitude. When I made the California cruise I went
> through altitudes as high as probably 9,000 feet. I could detect no
> difference in power. Had I pulled the plugs and looked at that altitude the
> engine was probably running a bit on the rich side.
>
> Conclusion: I would jet it for where you live and not worry about it. I
> don't know what the altitude of
> Mt. Shasta is, but I wouldn't go through the process of changing the carb
> jets to climb it. If you were gonna live there at that altitude all the
> time, then yeah. But getting the jetting exactly correct is difficult, and
> if you get it too lean you can burn your engine up. Having it too rich is
> not really gonna hurt anything. You want to err on the rich side, not the
> lean side. If you have it jetted for Austin the only thing that's gonna
> happen on Mt. Shasta is that you will be running a bit on the rich side; not
> a problem. If you have it jetted for the top of Mt. Shasta then you are
> gonna be running lean at lower altitudes, not a good problem.
>
> What engine are you going to run and what carbs will you have on it? Maybe we
> can be more specific on jetting.
>
> From: Julie <julie.hey.ho.lets.go@xxxxxxxxx>
> To: tcb@xxxxxxxxxxxxx
> Sent: Monday, September 16, 2013 8:39 PM
> Subject: [tcb] Dual vs. Single
>
> I don't understand carbonation throughly. But I do know that when you take a
> well running Bus into higher altitudes the mixture of fuel to air gets off
> and you run rich which slows you down and can fowl your spark plugs until you
> can cruise at a fast speed for awhile to clean the spark plugs off.
>
> So here is my question, would the effect be equal if one Bus had a single
> carb on the engine as another Bus that has dual carbs? Or would one set up
> be more finicky or sensitive to the thinner air over the other?
>
>
>
>
>
>
>
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