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Author Topic: engine idle speed?  (Read 2786 times)

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Tfrank59

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engine idle speed?
« on: June 22, 2016, 17:37:23 PM »

Now that I have a little electronic tach on my bike I can see RPMs.  the manual says it should idle between 950-1050 (~1000), unless it's a California bike and then it should be 1250-1350.  My bike was a Cali bike but I desmogged it; should I now go for 1000 Rs for my idle speed?  My other question, if your idle sort of creeps up over say a few days (of course after it's fully warmed up), is that a sign of a vacuum leak or something?  for the past couple of weeks it's been idling around 1200 but today it wouldn't come down from 1300-1350, so at a red light I ended up reaching down there and lowering it.  It wasn't the throttle cable or anything like that, so don't know what's up with that.  Thanks.
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Tom

'06 Drifter 800, '98 Valkyrie

"HD: The most efficient way to convert gasoline into noise without the pesky effects of horsepower."

CDNRatMan

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Re: engine idle speed?
« Reply #1 on: June 22, 2016, 20:07:56 PM »

  Interesting question and something the local mechanic told me and I trust him with his work. He told me the rpm's should be as the book said 1000+/- 50, and he said that the fools that idle down their bikes to sound like a H-D and have that patato/patato, sound will ruin their engines, in that the engine cannot get oil up to the top of the engine. The Kawasaki engine needs to run at the correct idle to work properly.
As for the idle acting erratically as you said not sure.
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Tfrank59

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Re: engine idle speed?
« Reply #2 on: June 30, 2016, 18:51:02 PM »

well now that we're in the full swing of Summer I have played with the idle and got it right around a thousand RPMs when hot. after what you said about guys who lower their idle I'm a little worried when it's cold and it wants to run at about 700 till she warms up - what I do there is keep the choke/enricher on longer. definitely don't want to starve her of oil
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Tom

'06 Drifter 800, '98 Valkyrie

"HD: The most efficient way to convert gasoline into noise without the pesky effects of horsepower."

CDNRatMan

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Re: engine idle speed?
« Reply #3 on: June 30, 2016, 18:57:03 PM »

   I have only made the following changes on my bike, had a Roadhouse exhaust when I bought it, I got rid of the stock air filter, and put a K&N air filter in its place.
   Since I have had the bike it has been cold blooded, every morning I need to choke it a bit to get it to start and idle nice, about 2 mins and it is running at correct idle and speed. Never need to choke the rest of the day.
   That being said on cold days in the lower 50*F range and if left for a long time then yes I might need to choke it, but never for long and that is no different than my H-D when i had it. Just seems the Drifter is a tad colder hearted. Otherwise it runs like a really smooth swiss watch.
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Tfrank59

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Re: engine idle speed?
« Reply #4 on: June 30, 2016, 20:22:10 PM »

OK correction, I was just out with it and when cold she was idling at about 950 (not 700) and then it warmed up and was idling at 1050, so I think we're pretty good like that. I think once the weather turns cold again in the fall it'll be more cold natured and idle at a lower RPM when cold, and that's why last fall I had to rejet my carb.
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Tom

'06 Drifter 800, '98 Valkyrie

"HD: The most efficient way to convert gasoline into noise without the pesky effects of horsepower."

kw-retrorider

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Re: engine idle speed?
« Reply #5 on: July 01, 2016, 06:29:51 AM »

TFrank59: Assume you have stock gearing/sprockets. Since you have a tach.....always wondered what the engine was turning when I shifted at 20, 30, 40 and 50 mph and then what the engine is doing at 60 mph on the highway.

If you can remember sometime when you're out...how about some rpm numbers for the sake of the greater good? Thanks.
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Tfrank59

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Re: engine idle speed?
« Reply #6 on: July 01, 2016, 09:01:43 AM »

Yep, I have stock gearing and will post those figures for everybody. 

One thing I can say I've learned since I put the tach on there, and I really had no clue previously, is that she seems to perform best (power band) between 2500 and 3500 rpm's.  The other thing the little electronic tach does is it posts your max rpm's for that event momentarily after you kill the bike. I don't like seeing a number larger than 4500, in fact I have not. I believe I read in previous thread someone mentioned the redline is 6500 or is it 7000?
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Tom

'06 Drifter 800, '98 Valkyrie

"HD: The most efficient way to convert gasoline into noise without the pesky effects of horsepower."

CDNRatMan

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Re: engine idle speed?
« Reply #7 on: July 01, 2016, 23:12:24 PM »

  ok so where did you get this wee little gauge and how did you mount it and what did I miss......
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Tfrank59

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Re: engine idle speed?
« Reply #8 on: July 02, 2016, 01:12:20 AM »

 http://m.ebay.com/itm/221908212828?_mwBanner=1

I got it on eBay. I had one on my dual sport some years ago and it worked good so I thought I would try it on the Drifter. Search YouTube for a Trail Tech hour meter tachometer and you can see the install procedure which is 10 minutes tops. I mounted it right on my handlebars down near the clamps
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Tom

'06 Drifter 800, '98 Valkyrie

"HD: The most efficient way to convert gasoline into noise without the pesky effects of horsepower."

Jobi

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Re: engine idle speed?
« Reply #9 on: July 04, 2016, 10:17:33 AM »

You've inspired me to buy my own tach now ;) Will report with results!
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CDNRatMan

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Re: engine idle speed?
« Reply #10 on: July 05, 2016, 19:25:04 PM »

  I would buy one but that particular seller is now on my unfriend list sort of like the state of maryland were some person stole my helmet, this dude will not ship to Canada.
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GPS is not to get you “THERE”……but rather to get you home from “THERE”

Tfrank59

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    • This is most of the herd, Some got out of the corral
Re: engine idle speed?
« Reply #11 on: July 06, 2016, 09:28:36 AM »

it's a very low deed, stealing one's helmet. I'm always paranoid about it but rarely lock mine ;D.  too bad that eBay seller won't ship to Canada - I think that's dumb
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Tom

'06 Drifter 800, '98 Valkyrie

"HD: The most efficient way to convert gasoline into noise without the pesky effects of horsepower."

greenbarn

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Re: engine idle speed?
« Reply #12 on: July 07, 2016, 19:56:26 PM »

Well, indeed it is low to steel anything, but a helmet is definitely lower than some other things.    I  hate a thief.

On the Tach, Ratman, good thing you have other friends in the US to help you out....

On the idle speed-- Tfrank, did you ever have more problems with the idle speeding up after a couple days??   Sounds like an adjustment issue, or change in temp or something.   Your last post sounded like you were happy with it, around 1000 RPM. 
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Tfrank59

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    • This is most of the herd, Some got out of the corral
Re: engine idle speed?
« Reply #13 on: July 07, 2016, 20:39:09 PM »

Yeah I've been happy with it idling, when it is just warming up it's between 900 to 950, and after it's fully warmed up she'll idle at around 1050 rpm's. Works for me.
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Tom

'06 Drifter 800, '98 Valkyrie

"HD: The most efficient way to convert gasoline into noise without the pesky effects of horsepower."

CDNRatMan

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Re: engine idle speed?
« Reply #14 on: July 07, 2016, 22:32:18 PM »

 I am so happy that Mrs GB likes me.....even more now since I help her with her wish when she came north ....lol......

 Tom 1000 is the place to have it.....
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greenbarn

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Re: engine idle speed?
« Reply #15 on: July 07, 2016, 22:40:33 PM »

I am so happy that Mrs GB likes me.....even more now since I help her with her wish when she came north ....lol......

Yea... HER wish was to see a moose, MY request was for Northern Lights.    Big moose damn near ran over us, but do you think we could get any Northern Lights??? Nooooooo......    Giant swarms of shadflies shimmering in the moonlight was the nearest it came.
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