Notices
Series I Tech Garage The place to discuss anything technical about the RX-8 that doesn't fit into any of the categories below.

Do you always let your 8 warm up before driving?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 12-21-2006, 03:22 PM
  #1  
Registered User
Thread Starter
 
Atrain's Avatar
 
Join Date: Aug 2006
Posts: 35
Likes: 0
Received 0 Likes on 0 Posts
Do you always let your 8 warm up before driving?

I know that you're suppose to let it warm up before starting to drive but I don't always have to time to wait 5 mins or more now that its winter. I'd never turn the car off before letting it warm up but, other than the chance of flooding when the engine is still cold and you accidently stall out, is there any reason you can't start driving right after starting up?
Old 12-21-2006, 03:29 PM
  #2  
Registered
 
RX8Maine's Avatar
 
Join Date: Jul 2006
Location: Richland, WA
Posts: 558
Received 3 Likes on 3 Posts
I usually wait about a minute before driving, and then keep it under 3.5k until the temp guage has started moving up. I will pre-start it sooner on really cold days just to get some heat!
Old 12-21-2006, 03:48 PM
  #3  
Bummed, but bring on OU!
 
therm8's Avatar
 
Join Date: Sep 2003
Location: Charleston, SC
Posts: 2,036
Likes: 0
Received 1 Like on 1 Post
I always let it complete its warm up cycle, even in the middle of summer. It takes slightly longer in the winter and settles at a higher idle. Keep it to low revs until the needle has been in the middle for 5 minutes. Then it's warm.
Old 12-21-2006, 03:52 PM
  #4  
Registered User
 
willhave8's Avatar
 
Join Date: Nov 2003
Location: in the moment
Posts: 603
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by RX8Maine
I usually wait about a minute before driving, and then keep it under 3.5k until the temp guage has started moving up. I will pre-start it sooner on really cold days just to get some heat!


DITTO :: I give it chance and then drive easy until the temp idiot needle moves.
Old 12-21-2006, 03:54 PM
  #5  
Mulligan User
iTrader: (1)
 
ZoomZoomH's Avatar
 
Join Date: Jan 2003
Location: caddyshack
Posts: 4,612
Likes: 0
Received 2 Likes on 2 Posts
on cold mornings, i wait until the tach has settled to around 1500rpm (temp needle still cold) before i drive off GENTLY, early shifting to keep it under 3000 rpm until the temp needle rises to normal operating position, then i keep it relatively easy (keep under 4-5000rpm) for another good 5 minutes before finally driving the full RPM range
Old 12-21-2006, 04:03 PM
  #6  
II SOCIETY
 
Phantom Menace's Avatar
 
Join Date: Nov 2006
Location: The Bay Area
Posts: 1,077
Likes: 0
Received 0 Likes on 0 Posts
This may not be healthy, but I developed this habbit warming my bike & putting my glvoes & helmet on before I ride:

I start the engine and go outside for a smoke. By the time I'm finished, the needle is just before the middle mark. Then I drive.
Old 12-21-2006, 04:13 PM
  #7  
road warrior
 
LionZoo's Avatar
 
Join Date: Feb 2006
Location: Oakland and Los Angeles, CA
Posts: 1,861
Likes: 0
Received 3 Likes on 3 Posts
I get in and drive, but I make sure to keep the revs below 3000 rpm until it's warmed up. My reasoning is that I really don't want the engine to spend more time at lower oil temperatures than it has to. Cold oil is bad for engine wear, so I try to get the engine up to temperature as quickly as possible without overstressing it. I know that when I lived on the East Coast, it would take 5+ minutes to get a (piston) engine up to temperature just idling it, versus about 2 minutes if you drive it with light below 3000 rpm loads. Make your own judgement.
Old 12-21-2006, 04:27 PM
  #8  
Bummed, but bring on OU!
 
therm8's Avatar
 
Join Date: Sep 2003
Location: Charleston, SC
Posts: 2,036
Likes: 0
Received 1 Like on 1 Post
FYI (just because this is a good thread for it):

The temp needle moving just means the water has warmed up. Those housings are thick, and alternate between steel and aluminum. They take a while to heat soak, and expand at different rates. Coolant channels run through them. So think about these things when you consider short changing your warm up. You can warm the car up on the road, just make sure it's actually warm before getting on it.

Originally Posted by ZoomZoomH
on cold mornings, i wait until the tach has settled to around 1500rpm (temp needle still cold) before i drive off GENTLY, early shifting to keep it under 3000 rpm until the temp needle rises to normal operating position, then i keep it relatively easy (keep under 4-5000rpm) for another good 5 minutes before finally driving the full RPM range
That's pretty much what I do.
Old 12-21-2006, 04:45 PM
  #9  
Registered
iTrader: (1)
 
NgoRX8's Avatar
 
Join Date: Oct 2004
Location: CA, Rowland Hts.
Posts: 10,239
Likes: 0
Received 4 Likes on 4 Posts
i just turn it on and drive. haha. just don't push it hard right away.
Old 12-21-2006, 04:46 PM
  #10  
IstanbulNotConstantinople
 
FastRX8's Avatar
 
Join Date: Jul 2004
Location: Fontana (but in the good part, by Rancho), CA
Posts: 513
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Phantom Menace
This may not be healthy, but I developed this habbit warming my bike & putting my glvoes & helmet on before I ride:

I start the engine and go outside for a smoke. By the time I'm finished, the needle is just before the middle mark. Then I drive.
I usually just keep the RPM's low until it's warm, but I like your idea.

Maybe you can start an ad campaign for Phillip/Morse about how smoking cigarettes is good for the rotary.

I mean, they used cartoons to target kids, maybe they can use this to target rotorheads.

No, but seriously, I like the idea of doing some last minute things in the morning while waiting for the car to warm up.
Old 12-21-2006, 04:49 PM
  #11  
road warrior
 
LionZoo's Avatar
 
Join Date: Feb 2006
Location: Oakland and Los Angeles, CA
Posts: 1,861
Likes: 0
Received 3 Likes on 3 Posts
Originally Posted by therm8
FYI (just because this is a good thread for it):

The temp needle moving just means the water has warmed up. Those housings are thick, and alternate between steel and aluminum. They take a while to heat soak, and expand at different rates. Coolant channels run through them. So think about these things when you consider short changing your warm up. You can warm the car up on the road, just make sure it's actually warm before getting on it.



That's pretty much what I do.
I understand the temperature gauge is just coolant temperature, but I'm concerned about oil temperature, which is one of the longest things to warm up. I suppose my example with the temperature gauge was flawed, but how fast the gauge changes is indicative of how fast the rest of the engine is warming up, just not the exact temperatures.
Old 12-21-2006, 05:09 PM
  #12  
Listen to Zoom44
 
Tirminyl's Avatar
 
Join Date: Aug 2003
Location: Overland Park
Posts: 1,330
Likes: 0
Received 0 Likes on 0 Posts
About 1 minute, or normally when the rpms settle to 1500 or below. I keep the revs under 3500 with light acceleration. I almost never get on it, but if I did its after 15 minutes of driving, and im not even at full revs.
Old 12-21-2006, 05:35 PM
  #13  
Registered
 
Nopstnz's Avatar
 
Join Date: Oct 2005
Location: Port Royal, SC
Posts: 939
Received 28 Likes on 25 Posts
^^ What I do exactly. Drive off after revs drop below 1500 then keep revs 3500 and under until its been in middle for 7-10 miinutes usually until I go past 5k.
Old 12-21-2006, 05:59 PM
  #14  
Administrator
iTrader: (7)
 
Jedi54's Avatar
 
Join Date: Mar 2004
Location: The Dark Side
Posts: 22,396
Received 2,631 Likes on 1,881 Posts
I turn the car on and then either go back into the kitchen to finish my coffee or pick out and put on a tie. By the time I get back to the car it's been 2-4 minutes and the car is ready to go.
Old 12-21-2006, 06:17 PM
  #15  
Power!!
 
shaunv74's Avatar
 
Join Date: Feb 2004
Location: Sunny See attle
Posts: 4,412
Received 3 Likes on 3 Posts
I turn it on and wait for the rpm to settle at around 1500 or so then drive below 3500 rpm until the temp needle is at normal operating temp. Gets the engine up to temp quicker and gets the oil circulating faster. That's my thinking.
Old 12-21-2006, 07:22 PM
  #16  
Registered User
 
Salamanth's Avatar
 
Join Date: Dec 2006
Posts: 216
Likes: 0
Received 0 Likes on 0 Posts
My dealer salesperson instructed me to rev the engine to 5k and hold it for ten seconds when starting and parking the car, this seemed a little fishy to me. Does anyone else do this?
Old 12-21-2006, 07:40 PM
  #17  
II SOCIETY
 
Phantom Menace's Avatar
 
Join Date: Nov 2006
Location: The Bay Area
Posts: 1,077
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Salamanth
My dealer salesperson instructed me to rev the engine to 5k and hold it for ten seconds when starting and parking the car, this seemed a little fishy to me. Does anyone else do this?
I do it to 3K. And only if I moved the car "real-quick."
Old 12-21-2006, 07:51 PM
  #18  
Registered User
 
6speed8's Avatar
 
Join Date: Sep 2003
Location: Florida
Posts: 572
Likes: 0
Received 0 Likes on 0 Posts
I start it and then drive, not hard or fast, but just drive. It uses 5-20w oil so the oil should be flowing easily even when cold. The RX-8 sucks down gas at idle so the less idling, the better the fuel mileage. BTW I have 44k miles and not a single engine issue.
Old 12-21-2006, 09:21 PM
  #19  
Registered User
 
hoosier's Avatar
 
Join Date: Aug 2006
Posts: 166
Likes: 0
Received 0 Likes on 0 Posts
I start it then let the clutch out and let it idle for a bit, but I am too impatient to wait long, so I drive it conservatively, not much above 3K, until it is warm, then I give it hell.
Old 12-21-2006, 09:22 PM
  #20  
road warrior
 
LionZoo's Avatar
 
Join Date: Feb 2006
Location: Oakland and Los Angeles, CA
Posts: 1,861
Likes: 0
Received 3 Likes on 3 Posts
I'd like to hear rotarygod's take on this.
Old 12-21-2006, 09:28 PM
  #21  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,525
Received 1,492 Likes on 840 Posts
I always wait till everyone is in the car before I start it & immeadiately let off the clutch & go . IMO its silly to warm up any modern car by idling it . Best way is to have it under light load until completely warmed up .
The less time spent warming up the better .
Old 12-21-2006, 11:33 PM
  #22  
Registered
 
ken-x8's Avatar
 
Join Date: Aug 2006
Location: Northern Virginia
Posts: 5,027
Likes: 0
Received 5 Likes on 5 Posts
Brettus has it right: just start it up and go. Don't rev it too high until it warms up.

Idling is bad for an engine. Once the oil pressure is up and the various lights have finished their test cyle, you're ready to roll. The best way to warm an engine is to drive at low rpm and moderate load.

Ken
Old 12-21-2006, 11:52 PM
  #23  
6 spd Newbie
iTrader: (1)
 
ucleadguitar's Avatar
 
Join Date: Mar 2006
Location: Staten Island, NY
Posts: 415
Likes: 0
Received 0 Likes on 0 Posts
i follow the Brettus method...time is money...can't be sitting around waiting for cars to warm up.
Old 12-22-2006, 12:30 AM
  #24  
Boosted Kiwi
iTrader: (2)
 
Brettus's Avatar
 
Join Date: Apr 2006
Location: Y-cat-o NZ
Posts: 20,525
Received 1,492 Likes on 840 Posts
I was thinking about why people let cars idle to warm up .
I think it comes from years ago when carburettas ruled the earth . Cars used to take an eternity to warm up & If you tried to take off cold, your car would fart & splutter ,often completely dieing on you at the worst possible moment .

Thankfully Modern computers & EFI have completely solved those problems & we don't have to worry about being T-boned while stalled in the middle of an intersection.
Old 12-22-2006, 12:41 AM
  #25  
Registered
 
ken-x8's Avatar
 
Join Date: Aug 2006
Location: Northern Virginia
Posts: 5,027
Likes: 0
Received 5 Likes on 5 Posts
Most carbureted cars were OK to drive when cold. If the automatic choke was clean and worked, they weren't much different than today's cars. Manual choke, as long as you worked it right, were also OK. Maybe there were people who'd let their cars warm until the choke could be turned off.

However...some cars did need a warmup. My first car was a 1958 Alfa Romeo Guiletta Spider. That car really needed to warm up. Unless I sat there letting it warm under idle before driving off, there was just no power. Don't know just what the deal was, but it was common to all Alfas of that series.

Ken


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Do you always let your 8 warm up before driving?



All times are GMT -5. The time now is 03:52 PM.