I finally bought another burping funnel for the cooling system. The expensive tool truck I have cracked and I didn’t want to replace it. Amazon, $20. I had put a bleeder valve in my coolant crossover and thought that would get the air out. Well I was mistaken. I burped a pretty good bit of air out of the system. Maybe that will help a little. Everything adds up.

 

yea, I got one of those no spill radiator funnel burping things and it’s been amazing. Just fill it and run it and remove. An air pocket wouldn’t help your cooling either.

 

I just drove it to the gym. It’s hard to say if it helped. The temp is only 82f and 81% humidity. Says it feels like 90f. The temp was 185 constant under cruise but when I got to the gym I let it idle in gear with the ac on and it quickly rose to 197f and stayed there the remainder of the time. I sat there like that for about 10-15 mins and it never rose higher. I still think more airflow is going to help. Remember I have the factory fans back in there with only a high flow water pump change (recently). I have the other stuff I mentioned (aluminum radiator, trans cooler with a fan mounted on it, hood slightly raised, under hood insulation gone etc. last piece of the puzzle will be the fans when they are available.

 

Talked to delta pag a day or so ago. He apologized, he’s been tied up. He’s going to send me an invoice this week so I can get a 16” one on the way. Probably just throw a profits 12” in for the time being.

I did something today just to see if it would help. I made a brass tube with a 90 on the end so I could spray water on the condenser to clean it out real good. I’ve half *** hosed it with the water hose from the top but that’s not good enough. I sprayed simple green on it let it sit ten minutes then sprayed it out real good. It’s hot today. Real hot. 95+ and I rode around for a bit and the ac blows ice cold now. Colder than my 19 Silverado and my wife’s Acura mdx. I’ve been sitting here with the ac on letting it idle and it’s been holding at 197-199. Thing about it before is with the ac speed on 3, it wouldn’t blow very cold when it’s 90+ out. Now, it’s blowing noticeably colder. Once I get some fans In this thing, it’s gonna be ready for any temps. Oops. It just hit 201f. Been sitting here quite a bit though. I’m not so much concerned with engine temps as long as it stays under 210, I just want the ac to keep me cool and it’s doing that now. It’s only gonna get better.

 

Hello BlackBird,

Some additional things to consider that i believe you missed. So, The dual derale 11" fans move 1830 x (158.25 / 144) = 2011 CFM. The flex wave is 1692 x (172.80 / 144) = 2030 CFM. Even though the flex wave has slightly better cfm. The dual fan setup will be a better option due to higher core utilization. Two 11" circles have an area of 190.06 vs 188.69 for the flex wave. Not much of a difference there, but with a shroud and if your core is rectangular, your able to pull more air evenly throughout the surface of the core. If you have a very very deep shroud, then it doesn't matter. But most people don't have the space.

As far as if it's worth going brushless vs brushed. I can't speak for other bbrushless fans but I do know the Deltapag system quite well 😉. There are three main benefits; airflow, operating life and fitment. As far as 16" fans, the flex wave is 2,030cfm the Delta PAG is 3,200cfm, maybe a bit less directly on the core, but basically looking at 30-50% more airflow. Operating life of a typical brushed fan is 3000hours, Operating life of the Delta PAG motor is 50,000hours and the operating life of ecm is 10,000hours (+3×). Then there's fitment, the Delta PAG fan is only 2.60" thick vs 3.20" for the wave. The thickness aspect might not sound like a big deal, but it could prevent from making proper thickness of a shroud.

Finally is it worth it$$? Well... I'm a firm believer of "If it ain't broke, don't fix it" so for you, since you already have a system and works well, no. But, if you had to make a decision because you don't have a fan or recently quite, then let's compare. The flex wave with controller costs $310 vs $489 for the Deltapag so you save $179 but you get 40% less airflow, far less operating life and far more functionality with the Deltapag controlls. Not sure if it's worth saving that amount to get so much less considering some people pay $179 on car wax.

 

nice! You can do that on your ac at home on the indoor and outdoor unit and pick up a good bit of cooling.

I also just swapped on my single 16” last night with new shroud and it fit like a glove. Added 4 high speed flaps in the corners and cranked it over. Bleeding the cooling system I got fans coming on at 186*F at 60% and variable speed for 10*F from 186 set point. Car was idling at 191-192 and didn’t go up, touched the throttle and gave it some blips and temp went down to 186*F. So I think increasing the waterpump flow at idle would be a good idea.

excited to see how the delta PAG does. I realized after fitting mine that the lower few inches of the fan fits between the shroud and the front sway bar and I have a max of 2” clearance. I feel as if I’m stuck with low profile fans only now. I don’t think the delta PAG would even fit honestly. Hopefully it doesn’t take 4 weeks to get yours but keep us in the loop.

 

Hi deltaPAG,

you calculate the total area of the 11” but don’t account for the motor center. There is double that area on the 11s so the effective pull area is higher on the single 16”. So while the total rough perimeter area is larger I’m taking advantage of more of the internal area with a large single.

I agree the dual with shroud makes more sense on a rectangular core but the dual 11” shroud wasn’t covering 10-15% of the core. This new single 16” shroud is 100% coverage. I also can’t fit full dual fans with full core coverage due to the upper control Arm on the driver side. It barely clears my 1.25” depth shroud that i just out on. I also realized at the bottom the fan
has 2” of clearance once mounted to the shroud to fit between the shroud and front sway bar. I don’t think the delta PAG fan is shallow enough to clear that space as yours are pretty flat from what I’ve seen. Yours seems to be 2.6” from the outer edge through to the center. I need that shallow style fan to clear the sway bar. If I didn’t have the upper control arm clearance issue I would have done the Chevy volt PWM fans as the shroud is a perfect size for my core but the driver fan would be an issue.

I agree I’m 100% sure your delta fan will pull more and last longer. But now that I have it all mounted I don’t even think it would fit due to the depth at the bottom edge of the delta fan.

 

The edge of the Delta PAG fans is 2.125", if you initially went with the Delta PAG fans you just needed to make the shroud a bit thinner. All of these things need to be designed together to work properly. Anyway, it doesn't matter, its done and so far works well. Ain't broke... If you feel like upgrading later we can definitely get it to fit.

Regarding the airflow of the dual fans; The hub wont matter as much when on an shroud with a decent step out. That 11" shroud opening is moving appropriately 1000cfm of air. The velocity of air going through that core be more even. Anyway it is already done. That system could have been designed much better with significant more cooling capacity with a proper radiator, fan & shroud assembly. But completely understand, low budget is low budget.

 

Evidently tooling around near the house in minor traffic doesn’t tell the tale. Drove it to work today and sitting in bumper to bumper creeping traffic I saw 219. Ac still was keeping me cool tho. Moving slowly the temp would drop to 215. If I went over 45 it would drop back below 200. This will be a reference for me when I put the fans in.

 

Does the 5k resistor/12v ignition need to be fused? I will likely convert my current wiring to handle the PWM so one of the two 12 gauge positive wires I ran for the fans will become the PWM from the holley outputs. Just wondering it it makes sense to fuse it and can it be like a 5amp fuse? Now I got to find a good source for low quantity resistors.

Sounds like all I need is (for a single)

• Fan + = 12v fused battery source
• Fan - = Chassis/battery ground
• Fan PWM = holley PWM output with 5k resistor to 12v ignition - fused
  • build out the PWM table based on temp

 

I actually have these adjustable 5k resistors from install bay... will they work? If I leave them wide open and make sure they read 5k?

 

Update:

I just got a call from proform and the replacement fans are on the way to me. I’ve been driving the car everyday so I have a good feel of how it does in the heat. I think the water pump actually helped a little bit, it has seen the max of 212 in bumper to bumper traffic but typically on a hot day of 95fcand humid, it’ll see a max of 208.
I heard back from deltapag once, he was supposed to email me an invoice but I never heard back after that, so I guess he forgot about me. I guess it works out because I had a front tire separate on me so I had to buy new tires.

when I get the fans put in, I’ll let you guys know how it goes.

 

Yea I emailed the Delta pag guys too but never heard anything. That's all I really need to know about them

 

you have a point!

 

Well it makes me wonder how many people in the wild are actually using their stuff?? I haven't found a single real world use online. I found a YouTube video from a PRI show or something like that was basically just showing them off

 

and you make another good point. I can’t find anyone using them either. Maybe it’s just mega rich people who don’t play on the internet? lol.

I offered to post a thread on what o thought about them and how they perform. There’s guys on here that probably never heard of them and can afford them much easier than I can. I figured it would add to his business and help with more sales. I guess either he doesn’t need anymore business (why did he post in this thread if that were true?) or maybe doesn’t have faith they will live up to the price. They sure look quality though.

 

Exactly they look really really nice. I would think if someone out there is using them they would definitely be on the internet because everything is on the internet these days. And the 4-6 week lead time for new orders is pretty crazy and could easily turn into 3-4 months.

They being said if I could find a real person that's used them that's not the guy in this thread hyping up his own stuff as "the best" then hell yea I'd probably buy a set

 

This is from 3 years ago

I have seen them a few times on his channel and latest I saw was on Rob Dahm's pikes peak car.

 

thanks. I’m glad I didn’t get them. They look way too thick to fit in my space. The proform are much thinner. The depth of the motor doesn’t matter much for me but the other part does. That looks for sure too deep and will not fit with my Intercooler piping.

 

I have two of the delta pag 12” should arrive early next week. Based on their drawings it’s a thinner fan than a spal.
based on this thread I didn’t even look at the pro forms because it’s a customer car and needs to actually work reliably.
im really looking forward to being able to try them first hand.