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H3 Hummer H3 SA Pusher E Fan

jphh20

Well-Known Member
Messages
173
Location
CT
There has been a lot of discussion recently about adding mods and as a result the difficulty of our rigs maintaining temps in hot ambient environments. Here in the northeast, temps have been 95*F for several days and I find myself watching my scan gauge trans and coolant temps. Has anyone found the part number for the SA Hummer H3 build and noodled around with an install? A ton of aftermarket options exist, some not so good and perhaps the SA version might be be best option for some to keep the system cool. I have been thinking about this mod but I was unsuccessful finding the part number or finding a prior build on it. I am interested in everyone thoughts and opinions.

I recently had to replace my water pump and found out there is a noticeable difference in cool temps on the scan gauge between aftermarket and oem. I made a poor decision years ago and replaced a perfectly working water pump bc of age and mileage with an aftermarket. In short, aftermarket ones with lifetime warranties are not always worth it and the oem fabrication is noticeably better and holds more stable temps. In many cases, oem is a great replacement for our rigs.



Joe
 

amrg

Well-Known Member
Messages
2,317
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As far as I know, There are no catalogs to choose parts for the SA model. I get alot of problems trying to find SA model specific parts for my truck.

Anyway, those fans come stock on 1500 trucks here. Not sure if they are exact same ones. The condensor measures 20.5" wide by 18" height.
Truck has (2) SPAL low profile pusher fans. One is a 11" fan (12" diameter) and the other is a 8" fan (9" diameter). I pulled the manufacturer number of one of the fans but I couldnt find any for sale online, probably replaced by newer versions. They have specific brackets that mount to existing holes in the body.
My estimate is that both fans put 1200 cfm together at zero restriction.
If you want to go with this dual setup, get the spal 11" fan with the AP90 code. 1650 cfm at zero restriction but infront of a rad will put 1400 cfm (get its harness too as it pulls 30 amps alone). As for the second fan, get the highest flowing 8" fan (around 400 cfm @ zero restriction)

My pcm logic for fan control is:
Big fan ON @ 102 celcius
Small fan ON @ 107 celsius

There is also A/c pressure values that once reached activate the BIG and Small fans. I need to get to my laptop to get those values if anyone cares.
 

jphh20

Well-Known Member
Messages
173
Location
CT
As far as I know, There are no catalogs to choose parts for the SA model. I get alot of problems trying to find SA model specific parts for my truck.

Anyway, those fans come stock on 1500 trucks here. Not sure if they are exact same ones. The condensor measures 20.5" wide by 18" height.
Truck has (2) SPAL low profile pusher fans. One is a 11" fan (12" diameter) and the other is a 8" fan (9" diameter). I pulled the manufacturer number of one of the fans but I couldnt find any for sale online, probably replaced by newer versions. They have specific brackets that mount to existing holes in the body.
My estimate is that both fans put 1200 cfm together at zero restriction.
If you want to go with this dual setup, get the spal 11" fan with the AP90 code. 1650 cfm at zero restriction but infront of a rad will put 1400 cfm (get its harness too as it pulls 30 amps alone). As for the second fan, get the highest flowing 8" fan (around 400 cfm @ zero restriction)

My pcm logic for fan control is:
Big fan ON @ 102 celcius
Small fan ON @ 107 celsius

There is also A/c pressure values that once reached activate the BIG and Small fans. I need to get to my laptop to get those values if anyone cares.

Thank you for the information, I will do some research and see what I can find. If it's not too much trouble I would like to have the fan values that controls the fans.

I did call spal, they didn't have a record of a fan system being produced for the H3 or specific part number. I will put your info to good use.

Thanks


Joe
 
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