850 mile trip in the runner, some issues came up
Nov 23, 2009 | 06:03 PM
#64
Registered User
Joined: Nov 2007
Posts: 79
Likes: 1
The 22re will put up with it for a time.
I noticed a few small driveability issues after having the truck stuck doing city driving for about two months (College is about 4 km away so the engine never fully warms up, and I don't drive to work).
I checked all fluids and took it out on the highway to burn everything out. If you search 'Italian Tune-Up', that is about what I did, albeit not for 120 miles. My 4Runner actually runs like its normal self after doing this, with regular smooth idle, and more pep.
That goes to say that you probably won't hurt your engine if you pull high RPM's for a little while, and have done a fluid check prior to departure. Your cooling system will be what covers you, so ensure it's in great shape. I've also got an aftermarket transmission cooler for added insurance, although I don't regularly drive the truck hard.
I'm not up on my engine terminology, but I think most people are referring to duty cycle, and are suggesting the 22RE is not able to sustain such a high load for a long time. I'm not sure, but I presume that with proper oil and cooling, your engine can run at those RPM's all day with no problems. You will have accelerated cylinder bore and piston wear, as well as marginally reduced life on bearings and seals (see Lundberg-Palmagren theory for more info), however, that is to be expected.
Lastly, your oil pressures are fine. On start-up, my oil pressure sits around half, after about 5 minutes will drop down to the second or so line, and, after a few hours of highway driving, at idle, it will rest just above the bottom line. This is normal from what I've been told. Additionally, pressure is resistance to flow. When the oil is warmer, it is able to flow easier, so with more flow (warm, thinner oil), you have less pressure required. If you still would like to change the oil pump, keep the one you have as a spare if possible.
I noticed a few small driveability issues after having the truck stuck doing city driving for about two months (College is about 4 km away so the engine never fully warms up, and I don't drive to work).
I checked all fluids and took it out on the highway to burn everything out. If you search 'Italian Tune-Up', that is about what I did, albeit not for 120 miles. My 4Runner actually runs like its normal self after doing this, with regular smooth idle, and more pep.
That goes to say that you probably won't hurt your engine if you pull high RPM's for a little while, and have done a fluid check prior to departure. Your cooling system will be what covers you, so ensure it's in great shape. I've also got an aftermarket transmission cooler for added insurance, although I don't regularly drive the truck hard.
I'm not up on my engine terminology, but I think most people are referring to duty cycle, and are suggesting the 22RE is not able to sustain such a high load for a long time. I'm not sure, but I presume that with proper oil and cooling, your engine can run at those RPM's all day with no problems. You will have accelerated cylinder bore and piston wear, as well as marginally reduced life on bearings and seals (see Lundberg-Palmagren theory for more info), however, that is to be expected.
Lastly, your oil pressures are fine. On start-up, my oil pressure sits around half, after about 5 minutes will drop down to the second or so line, and, after a few hours of highway driving, at idle, it will rest just above the bottom line. This is normal from what I've been told. Additionally, pressure is resistance to flow. When the oil is warmer, it is able to flow easier, so with more flow (warm, thinner oil), you have less pressure required. If you still would like to change the oil pump, keep the one you have as a spare if possible.
Nov 23, 2009 | 06:50 PM
#68
Thread Starter
Registered User
Joined: Mar 2008
Posts: 4,371
Likes: 6
From: Texas
4500 rpm is 4,500 revolutions per minute (rpm) every 60 seconds the engine will turn 4500 times. 90 miles per hour is the speed. Do I really need to explain this?
Not to sound like an @$$ but this is what the tach and speedo tell you.
Or did I missunderstand your question? I'm sorry if I did.
Not to sound like an @$$ but this is what the tach and speedo tell you.
Or did I missunderstand your question? I'm sorry if I did.
Nov 23, 2009 | 06:53 PM
#73
