Radiator flaps
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Joined: Oct 2006
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From: POULSBO WA.
Radiator flaps Hey guys, just put a new motor in and i was checking for any leaks after driving. I will start with the meziere electric pump which keeps the motor extremely cool. It sticks out alot and it is pinning the rigth fan so that it wont work unless i slice the entire fan in half with adremel bit, So i unplugged it.and the motor still runs really cool. The pinning of the fan is caused by the ls1 lid swap, laying the radiator back. Here in washington the weather has been in the 60-70 degree range so no HOT weather yet. But i was looking at the fans and noticed the two rubber flaps. I guess there purpose is to let air in at speed? Would it be a good idea to open those flaps to let air in ALL the time? Anyone do this? And what was the result? Thanks
You could switch to a CSR pump. They are much smaller than the Meziere and don't require any trimming on a stock setup so I'd imagine in your situation it would give you the clearance you need.
CSR:
Meziere:
Huge difference.
CSR:
Meziere:
Huge difference.
Thread Starter
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Joined: Oct 2006
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From: POULSBO WA.
Yes there is a big difference, especially in the wallet. Just laid out 250 for this pump. Works really really well not looking to switch thanks. I will have to wait for hot weather and see if opening the flaps make a difference. Thanks
As I recall, the fans bolt to the back side (engine side) of the fan shroud. You should be able to remove them and bolt on from the front side. This will move the fans forward.
Also, you can trim some of the plastic sections of the shroud.
Also, you can trim some of the plastic sections of the shroud.
The flaps are there to allow the fans to suck through the radiator, when the car's speed is high enough the incoming air blows the flaps open so the fans do not restrict the flow. On some cars the fans shut off at a certain speed like 45 MPH.
Al 95 Z28
Al 95 Z28
Thread Starter
TECH Fanatic
Joined: Oct 2006
Posts: 1,106
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From: POULSBO WA.
So holding them open should increase flow. I dont see how it could hurt. The only way to really know is to try it. When the weather ever gets better here i will let u guys know if it helps or not. Thanks for the replies.
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If those are open at low speeds with the fans going its going to be pulling air through those openings right through the fans instead of pulling air from the other side of the radiator that actually cools the coolant. LS1 Tech Stories
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You do realize the goal of the fans is to pull air through the radiator right? If those are open at low speeds with the fans going its going to be pulling air through those openings right through the fans instead of pulling air from the other side of the radiator that actually cools the coolant.
If those are open at low speeds with the fans going its going to be pulling air through those openings right through the fans instead of pulling air from the other side of the radiator that actually cools the coolant.
