Are you kidding or did i misunderstand, you but you cant blow the air forward,


I understand here in florida some yard in st augustine has a true 97 98 mk8 fan,

I dont know 100% what i am buying yet but since i am 99.9 % sure that no mk8 fan moves more cfm than the 94 t bird fan ( different rpm doesnt mean different cfm due to blade tweaking ) which i can get new under 100 that is my prime candidate,
However,
Im optimistic on the c7 fan for several reasons,
20 year newer tech , brushless.
And i have to believe by design moves a lot more cfm air than the mk8,
Cooling a 450 plus hp engine in a vette isnt easy

 

I went searching for one, but didn't find much..... be interesting to eyeball it.

 

No numbers, im just doing some preliminary research typed c7 corvette fan in ebay,


I didnt get the c7 shroud measurements so looked up 2016 core measurements if correct it was okay but not as good as the 94 t bird mk8 shroud that fits the c3 core almost like it was made for it,

I have no doubts c7 designers know more than me but note what seems to be a hanger on top of the fan where the top of it is out off the basic shroud,

I believe this c7 fan would get my OCD all worked up from its odd fit, and likely wasting some c3 core,

The c7 shroud also has lots of trap doors meaning designers knew or feared air flow at speed with fan off is poor, the bird mk8 shroud appears more free flowing at speeds,
Opinions vary but to me no good reason to run a fan when vehical is at speeds sufficient for air flow cooling.

This for me is all about bang for the buck and kiss it,
i really like the idea of two speeds, the bird fan has that, i can use the bmw dual switch and a couple relays, low on at 195 and then high on at 205, cheap controller,
cant do that with the single wire c7 fan, it will need to be wired full on full off, which i dont want or on an electronic controller like factory, not cheap.

My guess with bird mk8 fan i wont see high speed much and why run on high if not needed, i am curious what percent low is compaired to high 100%

So im back to placing the bird mk8 fan top on my list, if i shop around i can find it about 75.00 new, to me new is more peace of mind than 20 some odd year old used...ocd is a bitch.

 

Finally got around to getting the Siemens number off my Lincoln Mark VIII fan MOTOR. Now, if someone is a Siemens deciphering Guru, then perhaps we can find this fan motor:

Siemens 162-022-05.

 

Can't read the part number from the upper-left-corner as we look at video.

Please post that part number so we can investigate.

 

If the MK8 and Tbird motor has similar mounting to the shroud, couldn't you get a used tbird fan from a salvage yard replace the motor with one from a Lincoln. This would give the higher rpm with the tbird pitched fan to provide more cfm.

 

I will word this to reflect what i personally believe from the research i have done.

the single speed mk8 and 2 speed tbird fan ( on high ) put out the same cfm.
( hollister confirms this )

My notes with specific details are on my lap top but confusion about cfm was exacerbated because people assumed more motor rpm meant more cfm,

But the reason for more rpm was to make the same cfm from a unit that had a redesigned blade for less noise,

I believe i recall the mk8 didnt get this blade redesign, if you ebay 94 tbird fan, the thin 6 banana blades are less noise more rpm than the 7 more ax looking blades both make the same cfm,

However,
You could i suppose as you suggested take the higher rpm motor and if everything interchanges use that motor with the noisy blade, it might if the motor can turn it faster make a bit more cfm, but any fan spun faster will make more cfm, or should,

But why the extra costs and efforts,
The mk8/tbird fans have proven to cool vehicals demading way more cooling than my c3 will,

If i wanted to get into fabbing i would consider extending the sides of the mk8/bird shroud,
A total of about 5 inches depending on if you center it then about 2.5 inches of core on both sides are not covered,

My OCD of coving as much of the core as possible might just have to shut the hell up if it cools well as is.

I like to boast my builds are cheap and easy and work....

 

Because I am a firm believer in overkill is underrated and I cant find a Lincoln fan in my area.

 

I too like overkill in many things like cooling, and my alternator output, relays on things etc,

Like a gun or a condom, better to have it and not need it than to need it and not have it,

There are no new mark fans, the ones out there have ran for years might have years of life left might not, buy a 94 tbird fan, less than 100.00 new shipped to your door,

If it wont cool your car the mark fan wouldn't have cooled it either,

Plus no mark fans were 2 speeds they were variable, ran by the cars computer,
You would need a pricey controller to run it stepped,

The bird fan is true 2 speeds, and from my research unless its really hot out or the engine is really taxing the cooling system high doesnt even kick on much, but its there if you need it.

 

guessing it draws the same amps as the Lincoln fan?

 

I would assume so on high, but going from off to low, low to high is a bit less spike than off to high as the fan is spinning,

The relay set up must kill power to low when high kicks in,

I always upgrade my old cars charging systems so never worry much about it as i do overkill my wiring,

Keep in mind the dual 11 spals cool some big power cars, and they only have 2800 cfm, the black magic outdoes the dual spals at 3300,
the mk/bird fan on high is well up around 3500 - 4k,

The overkill radiators help too...

 

If the SPALs are 2800 cfm combined the Volvo fan should be enough.

 

CFMs, fans speeds, year models etc etc aside, I will just reiterate that the original lincoln MKVIII fan with the big squarish shaped blades, will cool anything fine...

Back in June, I took my 71' on the Hot Rod Power tour, average temp was 95*, we drove on highways for hours, then end up in small towns, some times idling for 30-40 mins in bumper to bumper traffic, all while running the AC on full blast, and we never saw over 190* on the entire trip....

At one of the venues, it took us almost an hour to get in the track, sitting in a mile long line, idling the whole time...and the fan would just cycle on and off with the AC holding the temp at 185*

This is on an iron head big block with 10-1 compression that makes 650hp....We did 3500 miles in 10 days, idling for LONG periods for 7 days of the trip, all of this with an original 93' MKVIII fan and original Siemans motor with who knows how many hundreds of thousands of miles.

These fans just work, plain and simple. No reason to over think this ****. Find one, slap it on, and be done.

 

I fully agree with you, on the mk fans ability to cool,

I do not believe there is anything wrong with researching other options,

I will add that the mk fan with white plug doesnt put out more cfm than the tbird fan on high, at least no one has proven this to me,

The bird fan can be bought for less than 100.00 new shipped to ones door,
And is two speeds, even better,

So yeah, slap it on and be done is what i will do,

If/when i learn of the modern brushless new school version of the decades old mk/bird fan i might swap, as that is what car crafting is to me.

Which fan controller are you using?
Since photobucket caused picture issues could you post some of the fan install, it would help a lot of people,

Thanks,
Cheers
B

 

cause mark VIII fans are getting hard to come by.

 

Im just curious, so this means you must believe the bird fan on high moves less air than the mk,
Okay fair enough,
Call or email hollister they earn a living off these fans, ask them what they think...

 

My Lincoln fan install thread from 7 years ago...Lots of pics there.
https://www.corvetteforum.com/forums...n-install.html

I'm not using a controller. Just a temp switch in the radiator that starts the fan at 188* and shuts it off at 178* (actual temps, not advertised). I also have the fan tied into the AC compressor circuit so the fan cycles on and off with the compressor. This maintains 182-185* temps about 95% of the time. Every now and then it may creep to 188*, but not usually. I also have a manual toggle switch for when I really want to cool it down low....like at the track.

 

no it means the Mark VIII is proven adequate but hard to find, I would love to have a surefire fan to cool my car and the tbird fan hasnt been used to cool a setup like ajrothm's

 

Every time I get on ebay, I see at least 3-4 lincoln MKVIII fans for sale for $100-150.. They are easy as hell to find.

http://www.ebay.com/itm/1993-1996-LI...dYTZq9&vxp=mtr

http://www.ebay.com/itm/93-98-LINCOL...dVoE1q&vxp=mtr

http://www.ebay.com/itm/1993-1996-Li...75.c100623.m-1


http://www.ebay.com/itm/93-98-LINCOL....c100033.m2042
http://www.ebay.com/itm/Lincoln-Mark...5YsLYu&vxp=mtr

 

,
The bird fan moves the same cfm on high as the mk,

If you read on the net and a person says their mk fan is 2 speeds, then they are mistaken and have a bird fan, i see fans on ebay called mk fans, but 2 speed so not mk fans,

I am sold the bird fan will do the same cooling as the mk does, if you dont agree grab a mk fan used off ebay or a junkyard,

But yeah. Ive beaten this dead horse too much,