It’s logical to think the radiator fan pulls air through the radiator, the condenser AND transmission cooler. And it does but its very minimal across the transmission cooler. There’s 2.5” of air space between the trans cooler and condenser so the radiator fan doesn’t need to pull it across the trans cooler (like it does with the radiator and condenser) but there’s still going to be some airflow there. The radiator fan is really designed to pull air through the radiator and condenser only.Budrbean wrote:What about the engine fan? Is it not pulling air through while the vehicle is sitting still? Same as it does for the radiator?
08Datsun, love your off-roading pics. Wish my PF was 4wd.08Datsun wrote:We tow a Viking tent trailer, which is about 2,800-3000 lbs. depending on how much stuff you take with you. I wish I had a picture handy. The PF handles the load easily and has been a great tow vehicle.
FFB - I find your observations very interesting. I've done the bypass and added a Hayden cooler I had lying around to help tranny cooling duties. My temperature observations are a bit cruder as I simply reach under the lower grille opening and grap the coolers to see how hot they are. Unfortunately, this doesn't work well when driving down the road. What I've noticed is they are quite warm around town, but cool when I've been running down the highway. We towed the tent trailer this weekend about 400 miles. Every time we stopped, the coolers were luke warm. When we got home yesterday, I backed the trailer up our driveway. It's about 25' long, uphill, and around a turn. You have to go very slow and it takes a couple of minutes to do. When I was done, the coolers were insanely hot and could not be touched for even a split second. After that and now hearing your observations, I may have to get a gauge. What brand gauge did you get and where did you install the sender? Which fan did you get?
Thats slick dude. Thanks for the really good info. I will be installing the temp gauge this summer, as well as the fan.Fossilfuleburner wrote:08Datsun, love your off-roading pics. Wish my PF was 4wd.
I used this write up on Titantalk to install my trans temp gauge, http://www.titantalk.com/forums/titan-f ... e-kit.html
The sender is installed on the transmission pressure test port on the passenger side of the transmission. People from other forums report that temperatures at the test port reflect pan temperatures.
Here's an old pic I took after it was installed.
Its an Autometer gauge
I installed a 10" Hayden fan (p/n 3670). The best prices were actually at my local auto parts stores. Kragen O'reily has it for $50 and $55 at Pepboys. Specs can be found here, http://www.summitracing.com/parts/HDA-3670/
Instructions on the Hayden website, http://www.haydenauto.com/Installation- ... ntent.aspx
Hope this info is helpful for anyone interested in installing a trans temp gauge or fan
Disallow, I totally agree. The high-side of the trans temperature at the output of the transmission and before the coolers is probably around 230 when I’m reading 180 on the low-side. I’m purely guessing here. I’ve always wondered what the temperature difference is. How many degrees can the radiator and trans cooler drop the temperature? I don’t think it could be more than 50 degrees if we assume the radiator is 200 degrees, the trans cooler is somewhere between outside air temp and the low-side of the trans fluid and taking into account the short amount of time it takes the fluid to circulate back to the pan.wouldn't it be reasonable to assume that trans oil temps at the outlet are well over 200F under the standard setup?
The hole and switches are pretty standard sizes. My gauge and switch fit perfectly.Did you have to drill a hole for the gauge or does the plastic cover pop out and happen to be the correct size?
Lake Anderson in Morgan HillWhat lake is that ramp at or is it in the Delta ?
Depends on which one you read. According to JC Whitney its only adjustable beginning at 170 (which would be perfect for me). However according to reviews, they are cheaply made and are not weathersealed so everyone has problems with them blowing a fuse in rainy weather. Ill just go with a switch I think.disallow wrote:The 3653 kit says its adjustable from 32 to 248 F....Budrbean wrote: Only thing I dont like about the thermostat deal is that they all kick in around 180 degrees....Id like it to kick in about 10 degrees cooler, so I may just opt for the switch.
Nothing a little silicone won't fix.Budrbean wrote:Depends on which one you read. According to JC Whitney its only adjustable beginning at 170 (which would be perfect for me). However according to reviews, they are cheaply made and are not weathersealed so everyone has problems with them blowing a fuse in rainy weather. Ill just go with a switch I think.disallow wrote:The 3653 kit says its adjustable from 32 to 248 F....Budrbean wrote: Only thing I dont like about the thermostat deal is that they all kick in around 180 degrees....Id like it to kick in about 10 degrees cooler, so I may just opt for the switch.