[Squidget Guy]

I posted this question under another thread, but started this post to get more exposure to my question with more detail.

Being new to Titans, having just bought a 2004 LE, mine appears to have two radiators with a fan both inside and outside. Lines run from the tranny up to the radiator(s) and back to the tranny. Did the 04 come with a trans cooler as standard or an option?

I have already established that i have the 3.36 gears for towing (engine turns 2000 rpms at 70 mph), but have no tranny temp gauge. I do not have the off road package that has the 3.36 gears, as i have 18" wheels and no skid plate. I was planning to buy a tranny cooler, but looked under the hood and see the two radiators, or at least it appears to be two of them. fron beneath the truck, i can put my fingers up between the two radiator cores. Else, why would there be two fans unless there are two radiators there?

 

[LUBECAKES]

You have a line going through the one and only radiator plus a small external cooler sandwiched between it and your ac condenser......which is the reason for having an extra fan.

 

[Squidget Guy]

thanks. I'm thinking of not adding another cooler, but installing a deep pan for the tranny that gives me an additional 2.6 quarts of fluid which should help with the fluid cooling. The pan has a finned bottom to help the cooling and i am having a temp sensor port put in it to add a temp gauge which my titan for some reason doesn't have although it has the tow rear end (3.36).

 

[LUBECAKES]

Are you sure it's a tow package?

 

[Squidget Guy]

From what I have read from other owners i have the 3.36 rear end because it does show 2000 rpm at 70 mph. I was told that if i had the stock rear end, the tach would shouw about 1750 at 70 mph. And if i have the 3.36 rear end, then I should have either the tow package or the off road package. I don't think it is the off road package because it doesn't have a skid plate and it is 2WD. Who would want the off road package without 4WD? Therefore, I am assuming that it has the tow package even through it doesn't have a temp gauge in the instrument cluster. There is a blank circle where the temp gauge should be. Tow package or not, it is geared for towing. I might drop by the Nissan dealer and see if they can interpret my VIN to see if that can shed any light on the subject.

 

[LUBECAKES]

Hitch?

 

[Nick Name]

I would expect a Tow Mode switch also.

 

[Indy]

I can't say a lot about an 04, but you are right with your RPM and speed. You have big tow (I believe it's actually 2100 RPMs, but close enough). I know people have said Trans temp gauge, tow mirrors and stuff can be hit or miss, so you can't count on that to tell you if you have big tow or not.

 

[LUBECAKES]

I would expect a Tow Mode switch also.

My non big tow has that.

 

[Squidget Guy]

It has a frame mounted receiver hitch. I'm not sure if it is a class 3 or 4, but probably the latter. The hitch had a piece attached that held the connector, but it had gotten bent, which broke the connector. The connector mount could not be straightened properly, so i cut it off and will mount my new connector with a mounting bracket.

Yes, it has a tow mode switch, but i think all Titans have one. Whether the tach shows 2000 or 2100 at 70 mph may depend on the tires/wheels it has on it. My tach reading was closer to 2000. I haven't ordered a temp gauge yet. I've been looking at the Glowshift gauges. I'm debating on whether to get the analog gauge or the analog with digital readout ($53 vs $70). I'm not sure that having the digital display is worth an additional $17.

 

[LUBECAKES]

Speed and rpm will always be in sync with each other, regardless of wheel and tire.
Actual speed is what can vary.

It sounds like you definitely have a tow package.

 

[Pale Rider]

get a good brand accurate gauge. look into Autometer from Summit racing.

 

[Squidget Guy]

get a good brand accurate gauge. look into Autometer from Summit racing.

Are the Glowshift gauges I'm looking at not good ones? I usually read all the customer/owner reviews I can find when comparing products. The Glowshift gauge has pretty good "verified" customer reviews on Amazon. The lowest priced Autometer gauge was only $3 more than the Glowshift gauge I was looking at and had perhaps a tiny bit higher average rating. What I like about the Glowshift over the Autometer gauge was (1) the changeable readout color, (2) autodimming at night, and (3) LED vs. incandescent lighting. Also, one reviewer said he had to buy an adapter to get the sensor to fit into his tranny…didn't like that at all. I want a plug and play unit. I had enough problems getting an aftermarket radio to have sound with my Fosgate system (another post).

 

[Pale Rider]

Are the Glowshift gauges I'm looking at not good ones? I usually read all the customer/owner reviews I can find when comparing products. The Glowshift gauge has pretty good "verified" customer reviews on Amazon. The lowest priced Autometer gauge was only $3 more than the Glowshift gauge I was looking at and had perhaps a tiny bit higher average rating. What I like about the Glowshift over the Autometer gauge was (1) the changeable readout color, (2) autodimming at night, and (3) LED vs. incandescent lighting. Also, one reviewer said he had to buy an adapter to get the sensor to fit into his tranny…didn't like that at all. I want a plug and play unit. I had enough problems getting an aftermarket radio to have sound with my Fosgate system (another post).

all depends on which series you get. a lot of gauges will have the dim feature.

in the end, buy what makes you happy...:wink:

I always swap out my bulbs for 194 LED 120°...

 

[jdmartin]

If you are right at 2k at 70MPH then you have the big tow gears. I've had both and the info you have is correct - my non-big tow that I have now runs about 1700-1800 RPM at 70mph, the big tow was right on the money at 2k RPM at 70MPH. If you've got it, that's a good thing even if you don't tow. My other Titan had a little more "oomph" off the line with the bigger gears, definitely enough to be noticeable. In fact, it was the first thing I noticed when I went from big tow to non big-tow.

 

[danman]

more "oomph" off the line with the bigger gears.

*Lower gear ratio, the physical size of the gear doesn't change*

The ratio between the ring and pinion gear determines the final drive. The rpm at 70 mph is a good indicator of what you might have. If you really want to know pop off your diff cover, count the teeth of the ring and pinion gears and divide. Simple math. While you are in there, give a thorough inspection of the common failure points....

 

[LUBECAKES]

*Lower gear ratio, the physical size of the gear doesn't change*
.

You mean the size of the ring gear, because the pinion size will vary....3.36:1 uses a smaller pinion.

 

[danman]

You mean the size of the ring gear, because the pinion size will vary....3.36:1 uses a smaller pinion.

LC,

Correct. The diameter of the ring gear doesn't change with lower gears...and the "gears" don't get bigger with a lower ratio...found this informative literature in a quick goggler seach.....

When ever the gear ratio in a differential is changed pinion diameter changes. There are two things that must change in order for the gear ratio to change. First, the gear ratio is determined by the tooth combination. The number of teeth on the ring gear divided by the number of teeth on the pinion (eg: 41/11 = 3.73) equals the gear ratio. Second, in order for the teeth to have the proper mesh and contact, the relative size of the two must be changed to match the ratio.

 

[Nick Name]

OR.....jack up the drive wheel, get under the truck with a crayon. Put a hash mark on the drive shaft and a hash mark on the inside of the tire. Spin the tire one full rev while counting the revs of the drive shaft hash mark. Should be just past three shaft revs for one wheel rotation. In 15 minutes you'll know what's what and have your jack put away with no tools to clean up after a drain, ring count and fill that takes a couple of hours.
I was taught this when I was twelve years old....been doing it this way for 56 years.

 

[danman]

I feel like you would notice only a marginal difference between 2.94 and 3.36 or even 3.13 with this technique. The ratios might be too close to tell ant measurable difference. For accurate calculations, count ring and pinion teeth, for rough guestimations, use the count driveshaft and axle shaft revolutions.

Sent from my SM-G900V using Tapatalk