Mounting slimline fans, FAIL and WIN methods
#21
#23
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My Spal fans and shroud
2x12" high flow THICKline 3200 cfm with built in 1-way flaps.
![](http://www.jaycorptech.com/images/PRODUCT/large/62.jpg)
http://www.jaycorptech.com/pc-62-14-...th-shroud.aspx
2x12" high flow THICKline 3200 cfm with built in 1-way flaps.
![](http://www.jaycorptech.com/images/PRODUCT/large/62.jpg)
http://www.jaycorptech.com/pc-62-14-...th-shroud.aspx
#25
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My Spal fans and shroud
2x12" high flow THICKline 3200 cfm with built in 1-way flaps.
![](http://www.jaycorptech.com/images/PRODUCT/large/62.jpg)
http://www.jaycorptech.com/pc-62-14-...th-shroud.aspx
2x12" high flow THICKline 3200 cfm with built in 1-way flaps.
![](http://www.jaycorptech.com/images/PRODUCT/large/62.jpg)
http://www.jaycorptech.com/pc-62-14-...th-shroud.aspx
#28
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Let's see your ebay fans do the 8 quarter airflow test:
https://www.miataturbo.net/showthrea...&highlight=TDR
https://www.miataturbo.net/showthrea...&highlight=TDR
#30
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![Default](https://www.miataturbo.net/images/icons/icon1.gif)
My Spal fans and shroud
2x12" high flow THICKline 3200 cfm with built in 1-way flaps.
![](http://www.jaycorptech.com/images/PRODUCT/large/62.jpg)
http://www.jaycorptech.com/pc-62-14-...th-shroud.aspx
2x12" high flow THICKline 3200 cfm with built in 1-way flaps.
![](http://www.jaycorptech.com/images/PRODUCT/large/62.jpg)
http://www.jaycorptech.com/pc-62-14-...th-shroud.aspx
![](http://www.flyinmiata.com/Store/images/09-56200.jpg)
http://www.flyinmiata.com/index.php?...umber=09-56210
Miata-fitment and flows 50% more--at about the same cost. Just waiting for the upcoming NB version release.
#31
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Big oops, I didn't realize Spal now has an 11" dual shrouded fan and a 12" dual shrouded fan. What I linked above is the 12" setup, I have the 11" below, which is a lot cheaper:
http://www.jaycorptech.com/pc-57-14-...th-shroud.aspx
![](http://www.jaycorptech.com/images/PRODUCT/large/57.jpg)
It seems to me the description FM has of their Stage 2 (thicker and stronger motor) of "4730 cfm" is a typo - that should probably read "4730 m^3/hr". The latter number is close to the spec, 4610 m^3/hr, of my twin 11" thick hi-perf fans:
http://www.spalusa.com/pdf/30102052_SPEC.PDF#view=FitH
Ergo my fans and those FM fans are the same - except that I had to trim my shroud to fit. But yes I would have bought the NB FM stage 2 fans if it were available 5 years ago when I bought the Spals. (Or, I would have bought the 12" dual Spals then if they were available and if they fit - they have 14% more flow than the FM Stage 2 or my dual 11's).
To get 4730 cfm for a pair - that's 2365 cfm each - you have to go to 16" fans - and 2 x 16" fans will NOT fit. Here is the 16" fan that has that flow:
http://www.jaycorptech.com/pc-74-14-...-pull-fan.aspx
http://www.jaycorptech.com/pc-57-14-...th-shroud.aspx
![](http://www.jaycorptech.com/images/PRODUCT/large/57.jpg)
Miata-fitment and flows 50% more--at about the same cost.
http://www.spalusa.com/pdf/30102052_SPEC.PDF#view=FitH
Ergo my fans and those FM fans are the same - except that I had to trim my shroud to fit. But yes I would have bought the NB FM stage 2 fans if it were available 5 years ago when I bought the Spals. (Or, I would have bought the 12" dual Spals then if they were available and if they fit - they have 14% more flow than the FM Stage 2 or my dual 11's).
To get 4730 cfm for a pair - that's 2365 cfm each - you have to go to 16" fans - and 2 x 16" fans will NOT fit. Here is the 16" fan that has that flow:
http://www.jaycorptech.com/pc-74-14-...-pull-fan.aspx
#32
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Interesting that big fans with no shroud have about the same performance as stock fans as per FM's testing:
http://www.flyinmiata.com/tech/fans.php
I never liked the idea of unshrouded fans!
http://www.flyinmiata.com/tech/fans.php
I never liked the idea of unshrouded fans!
#33
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Interesting that big fans with no shroud have about the same performance as stock fans as per FM's testing:
http://www.flyinmiata.com/tech/fans.php
I never liked the idea of unshrouded fans!
http://www.flyinmiata.com/tech/fans.php
I never liked the idea of unshrouded fans!
#36
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I’m running one 13” and one 12” slim Spal fans mounted on my own shroud. Together they put out a rated 3070 CFM.
http://www.cardomain.com/ride/737924/7
No way thick fans would fit in my car. I currently have about 1/8” clearance between the slim fans and my ISC sway bar which has about ¼” clearance to the ATI damper. The mounting brackets on my Thick dual row Godspeed radiator have been modified to move the bottom of the radiator forward already to get things to fit.
I will say my cooling has been very rock steady reliable for a car that turns laps as fast as any modified street miata. The vented hood helps a bunch.
Bob
http://www.cardomain.com/ride/737924/7
No way thick fans would fit in my car. I currently have about 1/8” clearance between the slim fans and my ISC sway bar which has about ¼” clearance to the ATI damper. The mounting brackets on my Thick dual row Godspeed radiator have been modified to move the bottom of the radiator forward already to get things to fit.
I will say my cooling has been very rock steady reliable for a car that turns laps as fast as any modified street miata. The vented hood helps a bunch.
Bob
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