04-17-2014, 05:38 PM
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#61
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Quote:
Originally Posted by ebg18t
Thanks for heads up on the B&M coolers.
Is the p3 small enough to fit in the storage compartment under the HVAC controls?
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Nope, it wouldn't fit there. Off the top of my head it is probably about 2" thick and you need to have access to the activation lever so you can at least test your brakes manually. I generally test them when I hook up, and test them a little before long descents for confidence.
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2006 Jayco Jay Series 1206 PUP - 3450 lb GVWR/14' Carson Landscape Trailer - 7000 lb GVWR/16' Wells Cargo Enclosed Trailer - 7000 lb
16-19 MPG City/20-22 MPG Highway/17-20 MPG w/Jayco @ 55 MPH/16-19 MPG with Landscape Trailer @ 5500lb @ 55 MPH/12-14 MPG with Enclosed Trailer at 55-60 MPH @ 6000lb - Pushing air sucks gas!
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04-20-2014, 08:51 PM
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#62
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Transmission Cooler
Quote:
Originally Posted by OrdnanceMarine
Two advantages of the V8 are that they come with a weight-distributing hitch receiver and a secondary transmission oil cooler already installed.
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I have a 2004 V8 4.7 liter 4Runner with the factory tow package, but am having some problems confirming that I have an auxillary transmission cooler. I have gone to two Toyota dealerships and they tried looking up my VIN number and can't tell me if I have one or not. Is the factory trans cooler in side the radiator or attached in front of the radiator? There is a small cooler in front of the radiator but was told it is a power steering cooler. I am interesting in purchasing a hybrid travel trailer and would like to know if my T4R can pull it? The trailer weighs about 4,400 dry weight. The manual says I can tow up to 7,000lbs because I have the 4x4. I plan on installing an Equalizer 4 point WDH systems, so that I can transfer some of that tongue weight. I know mine has the hitch mounted to the rail frame, so I can use the WDH system. Thanks!
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04-20-2014, 11:34 PM
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#63
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The cooler in front of the condensor is the aux transmission cooler, not a power steering cooler. Follow the fluid lines and you can be sure.
You shouldn't have any real trouble towing that trailer with that equalizer hitch setup. My recommendation would be to get a ScanGaugeII or something else that gives you a real time readout of the transmission temp so you can know if there's an issue and make the necessary changes to how you drive it to keep things from getting too hot.
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2007 V6 SR5 4WD - OME 884/Toytec Superflex with Bilstein 5100s - Air Lift 60809 Air Bags - Sixity Wheel Spacers - Draw-Tite 75155 Receiver - Tekonsha P3 Electric Brake Controller - B&M 70264 Tranny Cooler
2006 Jayco Jay Series 1206 PUP - 3450 lb GVWR/14' Carson Landscape Trailer - 7000 lb GVWR/16' Wells Cargo Enclosed Trailer - 7000 lb
16-19 MPG City/20-22 MPG Highway/17-20 MPG w/Jayco @ 55 MPH/16-19 MPG with Landscape Trailer @ 5500lb @ 55 MPH/12-14 MPG with Enclosed Trailer at 55-60 MPH @ 6000lb - Pushing air sucks gas!
Last edited by OrdnanceMarine; 04-21-2014 at 11:32 AM.
Reason: Add: No problem towing
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06-21-2014, 02:44 PM
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#64
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So - I have read through this entire thread several times, and no one seems to know the answers to my questions. I have a 2014 trail premium can someone tell me if it has a transmission cooler? And which weight distribution hitch is recommended for my rig? I plan on towing a double axle aluminum trailer. Also if the transmission is the same from the V8 why is the tow capacity limited to only 6300lbs with a wdh on the V6?
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06-21-2014, 06:13 PM
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#65
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All you have to do is look to see if you have an auxiliary trans cooler installed. All 4Runners, V6 and V8 have the standard trans cooler built into the radiator. If you have the aux cooler, then the return line from the radiator cooler will be routed around the front of the radiator/AC condenser to the aux cooler mounted there, and then back to the trans.
As for the difference in ratings between the V6 and V8, Toyota considers more than just the type of trans when establishing the limits. They consider the V8 engine with the higher torque ratings when increasing the max tow limits. The 6300 lb rating for the V6 is ONLY if you have the complete towing package installed. This would include the upgraded hitch receiver capable of accepting a WD system, and the Aux cooler installed. If you are not willing to install the necessary equipment to increase the capabilities of the vehicle, then you are stuck with the reduced limits they recommend.
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'08 Tundra SR5 5.7 V8 Double Cab, White, Equalizer WD system, '91 Coachmen Catalina 260FK, '89 Grumman GSS w/35HP Force O/B, 8' Snowbear utility trailer, 2012 Polaris 500HO LE in Camo, 7 x 14 TWF Landscape trailer w/2 ramps.
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06-22-2014, 01:39 PM
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#66
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Quote:
Originally Posted by TechWrench
All you have to do is look to see if you have an auxiliary trans cooler installed. All 4Runners, V6 and V8 have the standard trans cooler built into the radiator. If you have the aux cooler, then the return line from the radiator cooler will be routed around the front of the radiator/AC condenser to the aux cooler mounted there, and then back to the trans.
As for the difference in ratings between the V6 and V8, Toyota considers more than just the type of trans when establishing the limits. They consider the V8 engine with the higher torque ratings when increasing the max tow limits. The 6300 lb rating for the V6 is ONLY if you have the complete towing package installed. This would include the upgraded hitch receiver capable of accepting a WD system, and the Aux cooler installed. If you are not willing to install the necessary equipment to increase the capabilities of the vehicle, then you are stuck with the reduced limits they recommend.
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Tech - I appreciate the input, however it does not answer my question. I want to know if anyone knows if the 2014 trail premium comes with the aux transmission cooler, and/or the towing package?
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06-22-2014, 01:52 PM
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#67
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Also - if it doesn't which transmission cooler, and Weight Distribution hitch is recommended, or will fit on the 2014 year model?
Thanks in advance.
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06-23-2014, 01:58 PM
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#68
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Quote:
Originally Posted by tgamo
Tech - I appreciate the input, however it does not answer my question. I want to know if anyone knows if the 2014 trail premium comes with the aux transmission cooler, and/or the towing package?
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I can understand your question if you were looking at buying the vehicle but since you already own it I'm going to suggest that if you're not willing to have a look at your vehicle and if you don't have the ability to discern whether or not you have an aux transmission cooler then you may be in a bit over your head. There are plenty of pictures posted buy members of OEM coolers and aftermarket coolers here on the website to give you a good idea of what you're looking for.
Looking at what Toyota has posted on their website, I see no difference in towing ratings for the various flavors of 4Runner which indicates to me that they all leave the factory with identical equipment which I'm nearly positive means there's no oil-to-air secondary cooler. Also a quick run to Curt Mfg.'s website, Draw-Tite's website and etrailer.com shows no hitch options for the current generation 4Runner so either the factory hitch receiver is the end-all or nobody is making anything for it for another reason. I'm sure the 5th gen 4Runner regulars know the answer to this.
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2007 V6 SR5 4WD - OME 884/Toytec Superflex with Bilstein 5100s - Air Lift 60809 Air Bags - Sixity Wheel Spacers - Draw-Tite 75155 Receiver - Tekonsha P3 Electric Brake Controller - B&M 70264 Tranny Cooler
2006 Jayco Jay Series 1206 PUP - 3450 lb GVWR/14' Carson Landscape Trailer - 7000 lb GVWR/16' Wells Cargo Enclosed Trailer - 7000 lb
16-19 MPG City/20-22 MPG Highway/17-20 MPG w/Jayco @ 55 MPH/16-19 MPG with Landscape Trailer @ 5500lb @ 55 MPH/12-14 MPG with Enclosed Trailer at 55-60 MPH @ 6000lb - Pushing air sucks gas!
Last edited by OrdnanceMarine; 06-23-2014 at 02:22 PM.
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06-23-2014, 07:45 PM
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#69
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@ tgamo
What is the weight of your trailer?
Where are you getting the 6300lb weight rating from? 5th's are rated at 5k
There is no factory option for an auxiliary transmission cooler on the 5th gen. Do a search for 5th gen auxiliary cooling, many have added a trans cooler.
IIRC a WDH is not recommended for use on 5th's because of the way the OEM hitch is mounted to the rear cross member. Apparently a WDH causes this cross member to twist. Use airbags instead.
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02-22-2015, 10:42 PM
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#70
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[IMG][/IMG]
Quote:
Originally Posted by TechWrench
I don't know if I can adequately explain the principle of a weight distribution system in just words (ya know what they say about a pic being equal to 1,000 words). But I will give it a try.
The principle behind all (as far as I know) weight distribution systems is to, using the spring bars, transfer some of the felt tongue weight on the rear of the tow vehicle to the front wheels. As I said in my earlier post, most weight distribution systems are incorporated into a specifically modified ball mount, and using the spring bars, which are locked into the ball mount, they impart a rotational torque to the tow vehicle through the hitch mounted on the vehicle. When towing without a weight distribution system, all the tongue weight generated by the towed vehicle is directly applied to the ball mount through the ball coupler on the trailer. Since the ball mount is behind the tow vehicle's rear axle, this tongue weight causes the front end of the tow vehicle to lift because the rear axle of the tow vehicle acts like a fulcrum point of a lever system. The heavier the tongue weight, the lower the rear suspension squats and the higher the front of the tow vehicle lifts. and, there is a vertical pivot point where the trailer coupler meets the ball on the ball mount. What the weight distribution system does is, in essence, stiffen the pivot point at the coupler/ball mount, using the spring bars which are anchored at one end in the ball mount, and tied to the trailer frame behind the coupler using either support chains or support brackets.
There are two main adjustments that are made to a weight distribution system to achieve the desired amount of weight transfer. One is the amount of spring bar tension, made by adjusting the length of the chains or support bracket, and the other is adjusting the angle of the ball mount in relation to the tow vehicles hitch. If the system is adjusted properly, before the chains are connected to the spring bars, when the coupler is attached to the ball mount, the tongue weight will cause the spring bars to angle down, away from the trailer frame. Tension is put on the spring bars when you attach the chains or support brackets, and this tension is transmitted through the ball mount because the bars are fixed to it. Because the ball mount is fixed to the vehicle hitch, this tension is transmitted to the hitch. The hitch then transfers this tension to the tow vehicle through its mounting points. This is the hard part for many to understand, unless you envision the entire system from the side view. This rotational force causes the rear of the tow vehicle to lift slightly, and the frame forces the front of the tow vehicle down, which effects the weight transfer to the front axle. Now, the hitch that is designed to work with a weight distribution system, is rigidly mounted to the vehicle frame, and doesn't allow any twist between the mounting points and the receiver socket, so any rotational force is directly applied to the vehicle frame. With the V6 crossmember type receiver, the crossmember isn't as rigid as the other type of frame mounted receiver, and if enough rotational force is applied, it will twist while trying to transfer this torque to the frame. With a fairly light trailer, and low tension applied to the spring bars, the rear crossmember may be able to handle the load. But as the spring bar tension goes up, with heavier trailers, it will twist.
If this attempt at an explaination doesn't answer your questions, or make sense to you, I suggest you visit one of the weight distribution system manufacturers sites. I use an Equalizer system, and their site has a very through FAQ section which may be of more help. They use pics to illustrate the theory of weight distribution, which may be of more help.
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My car is 2005 V8, 4WD 4runner.
The pictures show its tow hitch. Is it crossmember hitch? Is it frame mounted receiver type? It looks like the hitch is bolted to the chassis/frame. Is it good to tow 21 foot travel trailers that weighs roughly 3,000 to maybe 4,000 lbs?
Last edited by TheHippie; 02-22-2015 at 11:10 PM.
Reason: post pics
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02-23-2015, 08:52 AM
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#71
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Quote:
Originally Posted by TheHippie
[IMG][/IMG]My car is 2005 V8, 4WD 4runner.
The pictures show its tow hitch. Is it crossmember hitch? Is it frame mounted receiver type? It looks like the hitch is bolted to the chassis/frame. Is it good to tow 21 foot travel trailers that weighs roughly 3,000 to maybe 4,000 lbs?
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That is the FRAME mounted hitch, and it should be rated for about 7k tow weight and 700 lbs tongue weight. But, your owners manual will have the Toyota specifics as to the overall recommended maximum tow ratings for your vehicle. The size trailers you mention should be well within those ratings. But the ability of the vehicle to handle a trailer of that size does not assure an easy tow. Your level of ability/familiarity with towing heavier loads goes a long way toward ensuring success. Depending on the trailer design and balance, you may still need a weight distribution towing system to make the tow a manageable event.
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I can Explain it to you, I can't Understand it for you.
'08 Tundra SR5 5.7 V8 Double Cab, White, Equalizer WD system, '91 Coachmen Catalina 260FK, '89 Grumman GSS w/35HP Force O/B, 8' Snowbear utility trailer, 2012 Polaris 500HO LE in Camo, 7 x 14 TWF Landscape trailer w/2 ramps.
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02-23-2015, 06:10 PM
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#72
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IIRC, if you are towing more than 5000lbs on a V8 4runner, you need a weight distributing setup. Check the manual to be sure. Reason is the suspension isn't meant to take so much tongue weight. That means you need a shank/head that's about as heavy as a boat anchor, spring bars, and fittings on the trailer.
Common Weight Distribution and Sway Control Questions | etrailer.com
It can be an expensive setup, as I found out when I had to replace a boat anchor part (technical term ) that walked away before a trip, but it definitely improves how the rig handles.
Since the 4runner has a relatively short wheelbase, a sway control system is a good idea for very heavy or long trailers.
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02-26-2015, 05:37 AM
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#73
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Quote:
Originally Posted by TechWrench
That is the FRAME mounted hitch, and it should be rated for about 7k tow weight and 700 lbs tongue weight. But, your owners manual will have the Toyota specifics as to the overall recommended maximum tow ratings for your vehicle. The size trailers you mention should be well within those ratings. But the ability of the vehicle to handle a trailer of that size does not assure an easy tow. Your level of ability/familiarity with towing heavier loads goes a long way toward ensuring success. Depending on the trailer design and balance, you may still need a weight distribution towing system to make the tow a manageable event.
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Thanks for your reply
By the way do u know if sequoia and 4Runner have the same kind and size of a side mirror? I plan to get those after market slide on extension mirrors which only the sequoia models have.
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02-26-2015, 09:48 AM
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#74
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Quote:
Originally Posted by TheHippie
Thanks for your reply
By the way do u know if sequoia and 4Runner have the same kind and size of a side mirror? I plan to get those after market slide on extension mirrors which only the sequoia models have.
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I don't think they are the same, but I am not sure. When I researched extension mirrors for my '03, there weren't any automatic ones available, at that time. I went with the strap-on ones from Campers world. They are not perfect, but with practice I was able to get them to stay in place for my use. Some have complained that they vibrate and tend to fall off, but I have not had that problem. But, I only use them 3-4 times a year when I move my camper back and forth to hunting camp.
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I can Explain it to you, I can't Understand it for you.
'08 Tundra SR5 5.7 V8 Double Cab, White, Equalizer WD system, '91 Coachmen Catalina 260FK, '89 Grumman GSS w/35HP Force O/B, 8' Snowbear utility trailer, 2012 Polaris 500HO LE in Camo, 7 x 14 TWF Landscape trailer w/2 ramps.
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02-27-2015, 05:55 PM
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#75
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Quote:
Originally Posted by TechWrench
I don't think they are the same, but I am not sure. When I researched extension mirrors for my '03, there weren't any automatic ones available, at that time. I went with the strap-on ones from Campers world. They are not perfect, but with practice I was able to get them to stay in place for my use. Some have complained that they vibrate and tend to fall off, but I have not had that problem. But, I only use them 3-4 times a year when I move my camper back and forth to hunting camp.
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Yeah i noticed there never is any extension mirrors for 4runner, but there are for Sequoia and Tundra, i wonder why is that.
By the way I installed my weight distribution system and hooked the 20 foot travel trailer to my 2005 4WD V8 4Runner and noticed that the front raised by almost one inch, and the back dropped by 3 inches.
Is my weight dist system not working? Did i miss something?
BTW, i didn't install the sway bars coz the trailer doesn't sway and never noticed it to sway.
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