Explorer serpentine fan clutch spacer

[73azbronco]

Thanks you know I've looked at the article probably 50 times and forgot about the shroud mod.

Found a hopeful part, AC Delco 15-40144, right bolt pattern, just beyond 1 inch added. 2009 GMC Envoy with 4,2 non electric clutch. More tomorrow.

 

[73azbronco]

Problem of to little fan inside shroud fixed.

I'm using the WH aluminum shroud for stock radiator which is about 3 inches deep.

I picked up a NAPa branded fan for a 2009 GMC Envoy 4.2 liter non electric fan clutch.
Part number 2851. ACDelco part number 15-40144.

Bolts right up to larger metal fan of explorer blade. Increases height just over 1 inch from stock explorer clutch.

Fan now sits just under 2 inches from radiator on top and just over 1 inch at bottom, with clutch sitting 1 inch from core. Fan sits inside shroud with just under 3/4 sticking out back of top, and 1/4 sticking out back of bottom.

Job done, thanks CB folks! No mod required to shroud.

I'd show pics but i guess we cant download nor photobucket them anymore. My photos of the two clutches would look just like viperwolfs above

As an aside, I called 4 Seasons and they were helpful, the Envoy clutch is as heavy duty as the explorer clutch and will run at 80-90% of engine RPM fully locked up. The plastic fan blades use a clutch which is only locking up to 50-70% of engine RPM. So those of you using the plastic fan and smaller diameter mounting circle of the plastic fan clutch might be losing some airflow.

 

[Madgyver]

thanks for the info!

 

[73azbronco]

I was just wondering which fan I used 3 years ago, now i know.Most important info is actually the two versions of van clutches, one heavy duty and one passenger, only locking up just over 50%.

 

[74 Bronco Billy]

I did this yesterday, worked perfectly, moved my fan into the Half Shroud I have from Champion Cooling on my Serpentine Front Dress. Very pleased with placement. Thanks guys for the info. Hard to see, but it moved a good inch inwards.

Forrest

 

[DirtDonk]

Looks like a great install. And a true "selfie-ready shroud" if I've ever seen one!
That thing is polished up like chrome for sure. Or is it chrome?

Paul

 

[pbwcr]

I am sure everyone has it figured it out by now. But here is my input my way.

Viperwolf post explains the differences. Some clutches have different length snout.
The solution:
1) get a longer snout clutch.
2) extend the shroud to where you want it
Or do both
For my solution I found it difficult to sort out different clutches, so I extended the shroud, used a Hayden extreme duty clutch and an explorer 11 blade fan. I wanted more airflow so my decision was easy. The Ford fan really moves air.