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Message started by Richard Amirault on 05/31/05 at 08:59:51

Title: Warm up time?
Post by Richard Amirault on 05/31/05 at 08:59:51

Just finished 'breaking in' an 04 this weekend (broke 1,000 miles)

I've read on the internet someplace,, and in the owners manual, that because of the long distance the oil needs to travel, you need to let the bike idle for a sufficient enough time for the oil pressure to build up before riding, or even putting it in gear. (this applies if the bike is hot or cold)

BUT, no one seems to say how long is 'sufficient'.

Using my watch I let it run at *least* 2 min, sometimes 3.

How long do you guys wait (if at all)?

Title: Re: Warm up time?
Post by mornhm on 05/31/05 at 09:19:19

I back it out, start the engine, put my helmet and gloves on (no hurry - this is when I'm letting the engine "start up"), shut the garage door and ride out.

Same sequence when I start it up when it's not in the garage except for the shutting the garage door part.

Title: Re: Warm up time?
Post by gazab44 on 05/31/05 at 09:47:47

Do the same..except shut garage doors..no garage :)

Title: Re: Warm up time?
Post by gandalph40 on 05/31/05 at 12:59:58

Same rough sequence of events. I hardly ever just sit and wait for it to warm-up. It probably takes less than 2 minutes. BUT...I will say that I tend to take it really easy for the first half-mile or so (length of time it takes to get out of my neighborhood and to a main street.)

Tom

Title: Re: Warm up time?
Post by Paladin on 05/31/05 at 13:31:53

Ditto except mornings also involve picking up the newspaper from the lawn and tossing on the porch. Half minute or so.

Title: Re: Warm up time?
Post by SavageDude on 05/31/05 at 19:06:14

Same process as everyone else; but I also do my pre-ride inspections--this should add a few more minutes to warm-up :D

SavageDude

Title: Re: Warm up time?
Post by WD on 05/31/05 at 20:19:07

Start bike on choke. When the bars start vibrating, turn off choke and ride away. About the time it takes to put on helmet and gloves. Much longer is just wasting fuel.
-WD

Title: Re: Warm up time?
Post by lancer on 05/31/05 at 21:45:40

Yep, helmet and gloves, then take off.

Title: Re: Warm up time?
Post by PerrydaSavage on 06/01/05 at 03:40:20

Here's what I do ... and bear in mind that where I live in eastern Nfld. that for most of the Riding season ('cept mid Summer) it's probably cooler in the mornings than where you live (mid 30's to low 40'sF).
Pull choke full out and start Bike (usually takes only one crank of starter). Once started push choke in to 1/2 position. Let idle in neutral while I pull on helmet, gloves and zip jacket. Leave choke out at 1/2 ... slowly Ride for about 1 mile then push choke in all the way. Usually fine and well warmed up by then!

Title: Re: Warm up time?
Post by Richard Amirault on 06/02/05 at 09:33:22

WD wrote:

Start bike on choke. When the bars start vibrating, turn off choke and ride away. About the time it takes to put on helmet and gloves. Much longer is just wasting fuel.
-WD

Really! How can you be so sure?

Most cars these days don't have oil pressure gauges If you ever drove a car with one you'd be surprised to see just how long it takes for the oil pressure to build up to 'normal'

Yes, 99.9% of folks just start 'er up and drive away, oblivious to the damage that could be caused by insufficient oil pressure.

Title: Re: Warm up time?
Post by mornhm on 06/02/05 at 11:01:11

I know I'm nitpicking here, but don't mistake gage reading for actual oil pressure (or anything else). All automotive oil pressure gages that I've been around are heavily damped to keep the reading steady. This gives a false impression that the pressure takes a long time to "build" up. Also don't mistake pressure reading for lubrication system effectiveness. More than one engine has been ruined by lack of lubrication when the pressure gage was reading just fine. :'(

Title: Re: Warm up time?
Post by Paladin on 06/02/05 at 14:25:47

The Camaro has hydraulic lifters -- I can tell when I'm low on oil 'cause they'll clatter. At startup the clatter is just a couple of seconds. You have oil pressure fairly quickly and can be rolling in a few dozen seconds with no problem. It is, most likely, a multi-weight oil so engine temperature is not as critical as with a single weight -- but I would still allow a five minute or so warm-up before pushing too hard.

Or, paraphrasing someone's sig line, let the lady warm up her throat before asking her to scream.

Title: Re: Warm up time?
Post by vroom1776 on 06/02/05 at 15:57:57

I go by sound. When it sounds like I've been riding around a while (before I ride off, if you get me), I know it's warm. On mY Vstar, I listen for the valves. When I can hear the valves chatter, I know it's warm (yes, you are supposed to hear the valves!).

Title: Re: Warm up time?
Post by bobo383 on 06/02/05 at 17:23:09

I'm like WD, except usually no helmet or gloves. 9 months out of the year in Texas, choke is only need to fire my Savage up. After that, the bike complains and the choke goes OFF. Ditto for my YZF600.

My Honda Shadow 600 needs partial choke for several minutes before the bike will perform right at low speeds - I'm riding it for those minutes. I just got a dynojet kit and I will alleviate that problem soon.

My GS1000 is the only bike that refuses to run right till it's warm, and I have to wait a few minutes for it to get that way.

I don't sit and wait for anything in the name of temp or oil pressure. After tearing apart several motorbikes and small block Chevys after years of sitting, I've seen oil at the top of every one as long as the valve covers were on the motor. I finally quit worrying about it. As Paladin said, the hydraulic lifter clatter goes away within a second or so.

I DO take it easy on all my stuff till I get to the end of the block, about 300 yards or so.

Title: Re: Warm up time?
Post by Greg_650 on 06/03/05 at 10:07:50

Richard Amirault wrote:

How can anyone be so sure, right? Because this works.

Your concerns are fair. No one should start any cold engine and immediately subject it to a load. Lubrication is important...but not so much to be paranoid. If you start the bike and let it run while you gear up, it'll be fine.

And conversely, if there is a problem or too little oil during those 2-3 minutes of warm up, the engine will definitely let you know before you even leave the driveway....it's a whole lot prettier to sieze an engine at idle than at speed 8)

Title: Re: Warm up time?
Post by CHRIS on 06/04/05 at 18:27:08

SOMETHING I'VE FOUND THAT MAY HELP YOU OUT. ON MOST BIKE AFTER YOU SHUT THEM DOWN TO CHECK THE OIL, SAY AFTER AN OIL CHANGE, IT WILL TAKE ABOUT 2 OR 3 MINUTES BEFORE YOU'LL GET AN ACCURATE READING. SO I'M THINKING THAT, IN REVERSE, IT WOULD TAKE ABOUT 2 OR 3 MINUTES TO GET THE OIL CIRCULATING PROPERLY.

Title: Re: Warm up time?
Post by Greg_650 on 06/05/05 at 06:33:16

CHRIS wrote:

Well, the difference is that the oil is pressure feed and mostly gravity return, so it will take less time for oil to reach the upper engine parts than for the oil to return to the crankcase. It will take a couple minutes for oil to run back down from places like the cylinder wall and the cam chain tunnel.

Title: Re: Warm up time?
Post by klx650sm2002 on 06/05/05 at 06:50:05

Greg

I agree

Clive W :D

Title: Re: Warm up time?
Post by Greg_650 on 06/05/05 at 07:54:45

klx650sm2002 wrote:

Greg

I agree

Clive W :D

Unless your bike has a dry sump, that is :o

Title: Re: Warm up time?
Post by klx650sm2002 on 06/05/05 at 08:08:52

Hey Greg

What do You mean about dry sumps, My SR500 is a dry sump?

Clive W :D

Title: Re: Warm up time?
Post by Greg_650 on 06/05/05 at 08:24:44

I mean like a bike with a separate oil tank...like a Harley.