pusher AND puller?

[flacopower]

ok quick question and i am sure its gonna get shot down.. ebay fans are constantly ragged on for not pulling enough air.. so what if you got a cheap ebay pusher fan AND a cheap puller fan?? even if the fans only pull/push half the CFM advertised, two should get the job done right? would it be possible to wire it into the stock harness?

please no 'you get what you pay for' or 'spend the a couple hundred on brand name fans'.. i can get both a pusher and a puller fan for $60 shipped..

 

[dnhieu]

spend the extra 40 bucks and get some from your local parts store or someplace like sb. my car with only 1 cooling fan will over heat but i got a nice big FMIC in the way. actually i got something (think its a bug) stuck in one of my cooling fans right now and its hurting the performance of it. while it does take a very long time to see temps above 209 in the middle of the summer day it does still do it. i

 

[staticbrainwash]

Having a fan in front of the radiator will actually hinder airflow to and through the rad. Just doesn't seem worth it to me. But for 60 bucks you might as well try it.

Why are you doing this? Overheating on stock fans, big fmic?

 

[speedy13]

I would imagine so. About wiring to the stock wiring harness, if your only gonna use these 2 fans, then yeah you can use the stock wiring no problem. I would. It's nice to have the stock connectors and just be able to disconnect whenever necesary. I'd say give it a shot. If it works, do a review on it and post it in the tech article section. Always good to have options.If it doesn't work then lesson learned, we'll alll know to stay away from cheap fans.

P.S. chances are, the ones he gets from the local parts store, are gonna have the same performance as the ones he gets on ebay.my .02

 

[flacopower]

big fmic and i only have one fan right now.. so if my project fails i will just replace the really small a/c fan..

 

[staticbrainwash]

Maybe start thinking about a koyo or fluidyne?

I'd say try out the fans regardless, but i wouldn't expect much.

 

[dnhieu]

damn hidden costs of a FMIC!!! my buddies 2g's dont have problems with stock fans and a nice big fmic but as soon as i put one on the damn car loved to over heat.

 

[dnhieu]

I would imagine so. About wiring to the stock wiring harness, if your only gonna use these 2 fans, then yeah you can use the stock wiring no problem. I would. It's nice to have the stock connectors and just be able to disconnect whenever necesary. I'd say give it a shot. If it works, do a review on it and post it in the tech article section. Always good to have options.If it doesn't work then lesson learned, we'll alll know to stay away from cheap fans.

P.S. chances are, the ones he gets from the local parts store, are gonna have the same performance as the ones he gets on ebay.my .02

2 of my buddies use some elcheapo slim line fans from o"rileys and they seem to draw more air then my slim line fans from slowboy...

 

[halik008]

Having a fan in front of the radiator will actually hinder airflow to and through the rad.

*cough* bullshit *cough*

 

[staticbrainwash]

Excuse me? Have anything positive to add to the thread or just calling bullshit with nothing else to say?

Pusher in front seems like it would hinder flow to me, if you think about it legistically that is.

 

[halik008]

Excuse me? Have anything positive to add to the thread or just calling bullshit with nothing else to say?

Pusher in front seems like it would hinder flow to me, if you think about it legistically that is.

well since you are asking.....logistically.....based on fluid dynamics it's totally irrelevant whether the obsticle is at the inlet or the outlet...in this case in front or behind....the drop in flow is exactly the same.....

 

[staticbrainwash]

But running one in front of the other?? Thats really what i meant.

 

[Quasimondo]

If you use eBay fans, I suggest you wire them up so they both kick on at the same time, and possibly wire them up so that you can turn them on manually if you're stuck in traffic. Those eBay fans don't flow enough and one running fan won't be enough to keep your temps under control.

 

[halik008]

But running one in front of the other?? Thats really what i meant.

ohhh i though u ment having pusher vs. puller......not having both. In that case yeah it will hinder the flow, but the bigger problem will be the fans fighting each other anyways

 

[halik008]

If you use eBay fans, I suggest you wire them up so they both kick on at the same time, and possibly wire them up so that you can turn them on manually if you're stuck in traffic. Those eBay fans don't flow enough and one running fan won't be enough to keep your temps under control.

you know i have yet to see any evidence to prove this. Luckily i have 2 12' ebay simline fans on the way so i will be sure to log my coolant temps w/ my dsmlink and report back.

As with all ebay products i believe all the trash talk about these fans is overinflated.

 

[SinaiTSi]

As with all ebay products i believe all the trash talk about these fans is overinflated.

Thank you.

Those eBay fans don't flow enough and one running fan won't be enough to keep your temps under control

I take it that you've had first hand experience then.



After my FMIC install I put in a 12" FAL Trimline fan that was $95. It flowed pretty decently but after long periods of driving, the car started to overheat. I since purchased a 14" Ebay fan for $26 and installed that in the FAL's place and I haven't had any problems with overheating since. The fan is larger, Yes, but it still flows considerably more than my name brand FAL. IMO, the Ebay fan was worth every penny and I don't regret buying it. I'm not sure about it's long term durability, but that's just something that will have to be tested, not just assumed good or bad.

 

[Quasimondo]

you know i have yet to see any evidence to prove this. Luckily i have 2 12' ebay simline fans on the way so i will be sure to log my coolant temps w/ my dsmlink and report back.

As with all ebay products i believe all the trash talk about these fans is overinflated.

All I can offier is my personal experience. I have two 12" fans, one is a pusher replacing the AC condenser fan, the other is a puller replacing the stock fan. When I had it wired normally, when the single fan kicked on, the engine temps still climbed above 230*, though not as fast is if there were no fans running. When I rewired the fans so that both would cycle normally, my temperatures would peak at 209*. This isn't to say that these eBay fans are crap, only that unless you wire up both fans to run at the same time, you're going to have temperature problems, epecially when you're stuck in stop-and-go traffic because one fan not providing enough air flow to the radiator.

Of course, now that SinaiTSi has mentioned it, the fan size could be an issue as well, since he's running larger fans maybe that's why he doesn't need to rewire them.

 

[flacopower]

how would you go about wiring them to both come on at the same time??

 

[mirkoelek]

check www.vfaq.com

http://vfaq.com/index-main.html

 

[chicagoavenger]

check www.vfaq.com

http://vfaq.com/index-main.html

You mean this one. Those 2 links dont takeyou anywhere but just vfaq. http://vfaq.com/mods/wayback/1gcoolingfan.html

 

[mirkoelek]

You mean this one. Those 2 links dont takeyou anywhere but just vfaq. http://vfaq.com/mods/wayback/1gcoolingfan.html

1g!?! .......thanks

 

[chicagoavenger]

1g!?! .......thanks

2g http://vfaq.com/mods/wayback/2gcoolingfan.html

 

[mirkoelek]

2g http://vfaq.com/mods/wayback/2gcoolingfan.html

My link for 2g was working yesterday...

 

[flacopower]

IMO, the Ebay fan was worth every penny and I don't regret buying it.

cool.. i remember when the xspower fmic kit came out everyone blasted ebay parts as well..

ok some clarification. the pusher AND puller i plan on running would be replacing only the rad fan. i plan to keep the stock a/c fan in place. so when i ask if i could wire them into the stock harness i meant would i be able to splice the stock connector two ways??

ohhh i though u ment having pusher vs. puller......not having both. In that case yeah it will hinder the flow, but the bigger problem will be the fans fighting each other anyways

this doesn't make sense.. i have a pusher fan pushing air through the rad, then the puller fan getting that air and pulling it even more.. if it does hinder flow it won't be anything like the HUGE FMIC i have blocking flow right now.. just trying to get some air moving.. i only have my itty bitty ac fan right now to stop flow. i relocated it to the middle and connected it to the rad fan connector as a very ghetto temp solution..

 

[halik008]

this doesn't make sense.. i have a pusher fan pushing air through the rad, then the puller fan getting that air and pulling it even more....

acutally that's completly wrong....... Basically the fans work on the same principle as "a chain is as strong as it's weakest link".....meaning you will flow about the same cfm as your slowest fan. Think of it this way if you got 500cfm fan and a 1500 cfm fan....does that mean those two will flow 2000cfm total?....heck no. It doesn't matter where the 500cfm fan is ( front or behind) it will cause air blockage (if it's infront) or air buildup (if it's behind) relative to the 1500 cfm fan. There is some other factors that decrease the flow:

1. Like i say the physical 2nd fan decreases the flow
2. The efficiency of a fan is reduced quite a bit when it has to slice thru very trubulent air (just pushed by the 1st fan) vs. having to slice thru fair unidirectional airflow created by the vehicle movement