i can be known to get *****-nilly some times

 

 

I looked at that Go.Jeep site and looked at the electric fans they install. Including the Taurus fan. Getting tired so I need to read article again, but at first look this looks like a good way to go.
That Perma-Cool fan p/n 19115 @ 2950CFM looks interesting. Maybe I'll do this rather than spending $40 on a new shroud...

http://www.go.jeep-xj.info/HowtoElectricFan.htm

 

If anyone that read the test and is going to put a shroud on their Cherokee a simple way to prove to yourself that a shroud is money well spent is to take a piece of tissue and hold it in front of the grill in various places. Note the drawing action of the fan with no shroud. Then install the shroud and note the wider area the fan now draws air through the grill from.

 

I have had that fan, if it isthe same one it is a 16" diameter fan. Your XJ radiator is only 11" tall and you will need a shroud for it to work right. Try this one instead.

http://store.summitracing.com/partde...5&autoview=sku

I bought two and made my own shroud, which you can do with a pop rivet gun and a sabre saw.



These pull 4000 cfm between them

 

That's nice looking work.

So the tests are complete, and the results are in. Personal preference with a little proof thrown in =?

 

Nice!
Looks good I think I saw a picture of that the other day.
Have you ever published the dimensions on that? Did you weld tabs on the bottom to plug into the radiator slots?
I'll have to read your response tomorrow. Gotta hit the hay!
Thanks though

 

i have been waiting to see it in action to

 

It would be neat if the guy that made his own shroud could duplicate my test fixture and replicate the test I did. He could get away with doing just the part where the test fixture was in front of the radiator. Or the whole test for that matter...
We could compare his draw through the radiator with the stock one that way. The distance from the center of the grill where the Jeep logo is to the antenna was 3.5". I used a cherokee antenna.
Also, I just used strips of toilet paper 2 sheets long with 1 wrap around the antenna. Quilted Northern soft and strong to be exact. Double layer! Good stuff!

 

I just checked my fan shroud on my 91 it looks the same as yours mike1998xj other than the stickers. I don't have any history on mine so I don't know if it was replaced or not. HMMM is there really a mistery here or just a perception.

Also I have nothing against pocket protectors I'm just jealous because I wanted one for my collection of pocket tools that I had at work but none of the service guys that I worked with had them to give away as in other departments! So if I wanted one I would have to go and buy one with out the tech logo it was a matter of pride.

aren't there rules about product endorsement on this forum if not Quilted Northern soft and strong is my preference too!!!!

 

It is 29" wide, the same as the radiator core. It is 12" tall and sits on the frame and the tab receptacle on the radiator. The top of it comes just over the top of the piece that holds the radiator in. It bolts to the top piece through the holes you can see. I had to cut a small piece out of the passenger side to accommodate the steering box. Right now everything is apart as I have had the engine out to straighten some things out with the conversion, replace motor mounts, add headers and new pipe and cat and a transmission repair and clock the Atlas transfer case before I put it in. I only want to have to heft that up once. I added a temp sensor from Painless wiring. It turns the fans on at 200 and off at 190 degrees. It was easy to drill and tap it in. It uses a 12mm thread. It all works well together. Also I will be venting the hood and adding engine oil and tranny oil coolers.

 

Well that's two votes for pocket protectors and Quilted Northern then!
Mike

 

Excellent... Quite the fab job there. You'll definetly have to update us after it's all complete. Maybe a simple test or two would be in order at that time. Have you seen those hoods that have the cowl that face the back? I think they are in the Quadratec catalogue. I have been mulling over the data I collected during my airflow testing and I believe that those might be the best way to go. I believe one of those with the stock cooling system would satisfy 90% of the people with Cherokees. Too bad they couldn't sell those hoods for less. In my case I want to paint my Cherokee anyway so adding a new hood to the mix isn't so bad...
I like the fact that the rain isn't coming in either. Though we get quite a bit of rain here in Michigan.
What do you think?

 

I haven't seen the hood you speak of. Is it a cowl that comes back from the front lip of the hood over the radiator or am I missing the idea ?

 

The cowl opening is right near the windshield wipers. So as your in the Drivers seat you can see the opening. It doesn't function like a ram air it functions more like a vent so the airflow coming through the radiator takes a nice path across the engine and then out the back through the hood vent. On my test the air was moving all around the engine compartment rather than coming in, absorbing heat and then moving out quickly.
Especially on the Drivers side.
See page 18 in Quadratec catalogue. Steel Cowl Induction Hood.