The Nissan Path Forum Index The Nissan Path
The World Wide Nissan Pathfinder Owner's Forum
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Use Google to search TheNissanPath forums ->
I by-passed my in radiator tranny cooler
Goto page 1, 2, 3 ... 39, 40, 41  Next
 
Post new topic   Reply to topic    The Nissan Path Forum Index -> R51 Engine, Driveline and Powertrain
View previous topic :: View next topic  
Author Message
ajporter03



Joined: 30 Jul 2009
Posts: 2

PostPosted: Mon Aug 24, 2009 11:39 am    Post subject: I by-passed my in radiator tranny cooler Reply with quote

This is my first post, I haven't had my Pathfinder too long. But I have an 05, with just over 50,000 miles on it. I have read more than enough about people having problems with coolant mixing with their tranny fluid causing thousands of dollars worth of damage. So I picked up a B&M Trans cooler. Part Number 70268. I installed it in place of the cooler inside the radiator. Now the tranny fluid flows through the B&M cooler, then the stock cooler and back into the transmission. The setup seems to work great. No problems so far.
Back to top
View user's profile Send private message
NVRDONE



Joined: 07 May 2008
Posts: 159
Location: seattle

PostPosted: Mon Aug 24, 2009 4:00 pm    Post subject: Reply with quote

We did a similar change on my 06 Pathfinder & my shop forman's 05 Frontier.
Since the radiator cooler is so small, we just bypassed that cooler by using a double ended barbed fitting & clamps. By using the auxaliary cooler all ready on the truck, we havent had any problems & I tow a 19' boat !!!
Back to top
View user's profile Send private message
2008PatherfinderS



Joined: 02 Sep 2008
Posts: 65

PostPosted: Mon Aug 24, 2009 4:46 pm    Post subject: Re: I by-passed my in radiator tranny cooler Reply with quote

ajporter03 wrote:
This is my first post, I haven't had my Pathfinder too long. But I have an 05, with just over 50,000 miles on it. I have read more than enough about people having problems with coolant mixing with their tranny fluid causing thousands of dollars worth of damage. So I picked up a B&M Trans cooler. Part Number 70268. I installed it in place of the cooler inside the radiator. Now the tranny fluid flows through the B&M cooler, then the stock cooler and back into the transmission. The setup seems to work great. No problems so far.


If i read your post right, you have the fluid still running through the stock cooler. If that is true, you still won't be protected if the radiator cracks internally and leaks coolant into the stock tranny cooler. You need to bypass the stock cooler completely.
_________________
2008 Pathfinder S 4x4
Back to top
View user's profile Send private message
disallow
Site Admin


Joined: 13 Aug 2008
Posts: 2731
Location: Winnipeg, Canada

PostPosted: Mon Aug 24, 2009 6:11 pm    Post subject: Re: I by-passed my in radiator tranny cooler Reply with quote

2008PatherfinderS wrote:
ajporter03 wrote:
This is my first post, I haven't had my Pathfinder too long. But I have an 05, with just over 50,000 miles on it. I have read more than enough about people having problems with coolant mixing with their tranny fluid causing thousands of dollars worth of damage. So I picked up a B&M Trans cooler. Part Number 70268. I installed it in place of the cooler inside the radiator. Now the tranny fluid flows through the B&M cooler, then the stock cooler and back into the transmission. The setup seems to work great. No problems so far.


If i read your post right, you have the fluid still running through the stock cooler. If that is true, you still won't be protected if the radiator cracks internally and leaks coolant into the stock tranny cooler. You need to bypass the stock cooler completely.


No, you read wrong.

Remember that stock there are 2 coolers, the one in the rad (suseptible to the failure) and the oil/air cooler up front.
_________________
Terry in Winnipeg

'05 Pathfinder SE Premium 4x4 - 343000kms (213000mi) - weekend warrior, Cortex Superchips on 87 Octane Tune, K&N filtercharger, Airlift 1000, Prodigy Brake controller, 7 pin trailer hookup, Prostart Remote Starter, Cooper Discoverer ATw P265/70/16
Back to top
View user's profile Send private message
NVRDONE



Joined: 07 May 2008
Posts: 159
Location: seattle

PostPosted: Tue Aug 25, 2009 7:46 am    Post subject: Reply with quote

Ok, so I was tired & maybe wasn't clear. We simply bypassed the trans cooler in the bottom of the radiator. Used a barbed connector & clamps on the trans hose. Also capped the trans cooler conections at the bottom of the radiator.
All seems good after a 2400 mile run from Seattle to Ca & back.
Back to top
View user's profile Send private message
kramer



Joined: 10 Aug 2009
Posts: 51

PostPosted: Tue Aug 25, 2009 1:52 pm    Post subject: Reply with quote

Can you snap some pics of the setup maybe? What size hoses and fittings did you need?

I'd like to do it too. Did you have to remove stuff to get to it or was the install pretty straight forward?
Back to top
View user's profile Send private message
NVRDONE



Joined: 07 May 2008
Posts: 159
Location: seattle

PostPosted: Tue Aug 25, 2009 3:25 pm    Post subject: Reply with quote

I wouldn't have a clue as to how to post pictures, but this was extemely easy to do.
I simply removed the front skid plate for access, disconected the hoses from the trans cooler at the radiator, spliced them to gether with a 3/8" double ended barbed hose conector & hose clamps. Then I took 2 rubber vaccume caps & clamped them over the conections at the trans cooler in the radiator so I wouldn't loose coolant if the divider between the trans cooler & radiator ruptured. Then I wire tied the hoses up out of the way & re installed the skid plate. Took all of about 1/2 hr to do it.
Back to top
View user's profile Send private message
kramer



Joined: 10 Aug 2009
Posts: 51

PostPosted: Wed Aug 26, 2009 2:20 pm    Post subject: Reply with quote

Oh okay I understand now what you did. I'll do the same.
Back to top
View user's profile Send private message
ChitownPathfinder



Joined: 29 Mar 2009
Posts: 21
Location: Chicago

PostPosted: Thu Aug 27, 2009 6:43 pm    Post subject: Reply with quote

I just did this same mod, but used Nissan Part number 21533-EA50A Tube-joint ($15.00) to bypass the radiator . All the bolts to be removed are 10MM and there is 12 of them. Took about 45 mins
Back to top
View user's profile Send private message
ajporter03



Joined: 30 Jul 2009
Posts: 2

PostPosted: Thu Aug 27, 2009 7:13 pm    Post subject: Reply with quote

I am kind of surprised that you guys don't seem to be too concerned about taking away cooling capacity by bypassing the in radiator cooler and not replacing it with something else. I was a little concerned that the B&M cooler that I added in wouldn't be adequate to make up for bypassing radiator. You guys are a little braver than I would be.

Good luck.
Back to top
View user's profile Send private message
ChitownPathfinder



Joined: 29 Mar 2009
Posts: 21
Location: Chicago

PostPosted: Thu Aug 27, 2009 7:35 pm    Post subject: Reply with quote

This is a good read for anyone considering this mod http://www.clubfrontier.org/forums/f8/transmission-radiator-failure-34877/
Back to top
View user's profile Send private message
ChitownPathfinder



Joined: 29 Mar 2009
Posts: 21
Location: Chicago

PostPosted: Thu Aug 27, 2009 7:41 pm    Post subject: Reply with quote

Here's detailed pics of the bypass http://www.clubfrontier.org/forums/f23/automatic-transmission-radiator-oil-cooler-bypass-42555/
Back to top
View user's profile Send private message
kramer



Joined: 10 Aug 2009
Posts: 51

PostPosted: Thu Aug 27, 2009 8:55 pm    Post subject: Reply with quote

ajporter03 wrote:
I am kind of surprised that you guys don't seem to be too concerned about taking away cooling capacity by bypassing the in radiator cooler and not replacing it with something else. I was a little concerned that the B&M cooler that I added in wouldn't be adequate to make up for bypassing radiator. You guys are a little braver than I would be.

Good luck.


Someone else probably knows better, but the cooler inside the radiator is either just a reservoir or a very small heat exchanger. I'd wager a bet that its purpose is not to cool the trans fluid but instead to maintain a regular temperature, and in cold climates, help the transmission warm up faster.

These trucks are equipped with a larger external cooler anyway, so you're not really taking away any cooling capacity IMO, at least not anything worth noting. The one and only thing that I would expect is perhaps slightly harder shifts in really cold weather, before the transmission warms up on its own.

Most cars/SUVs don't even have a single transmission cooler, so don't worry, you're still way ahead of the game.
Back to top
View user's profile Send private message
Cooper993



Joined: 12 Jun 2008
Posts: 135
Location: NJ

PostPosted: Fri Aug 28, 2009 4:54 am    Post subject: Re: I by-passed my in radiator tranny cooler Reply with quote

ajporter03 wrote:
...So I picked up a B&M Trans cooler. Part Number 70268. I installed it in place of the cooler inside the radiator....


Can you tell use where you mounted this cooler? Also, did you have to cut or fabricate any parts or did is bolt up easily?

My trans just failed for this same reason and I want to bypass the internal cooler as well.
_________________
'06 Pathfinder SE 4x4
Back to top
View user's profile Send private message
kramer



Joined: 10 Aug 2009
Posts: 51

PostPosted: Fri Aug 28, 2009 9:41 am    Post subject: Reply with quote

I just bypassed my cooler as well, took about 30 minutes to do. Very quick and easy job, if any of you are wanting to do it but are unsure because of the work involved, just go for it. Its really quick.

You'll need a 12mm socket to remove the plastic valance and skidplate, there are about 10 bolts or so.

You'll also need a 5/16" double ended barbed brass hose fitting like this one:

Don't bother ordering the Nissan hose joiner for $15, it's a waste of money. The barbed hose fittings are like 2 bucks.

Finally, you'll need some vacuum caps, I believe the size is 3/8" internal diameter to plug the radiator outlets.

The write-up with photos in the link above is spot on, its very easy to do. I'm not gonna bother installing an aftermarket cooler as the stock one outside of the radiator is plenty big enough.
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    The Nissan Path Forum Index -> R51 Engine, Driveline and Powertrain All times are GMT - 8 Hours
Goto page 1, 2, 3 ... 39, 40, 41  Next
Page 1 of 41

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group