Builds Big Red Toy (2 Viewers)

[The Phoenician]

I can't seem to find any good pics of them to post. I'll have to take some new ones that show them better.

Thanks, there's no rush, I won't be home for another week.

 

[davegonz]

So, are you thinking of mounting them more along the center of the hood or over the turbo area?

 

[The Phoenician]

I was thinking closer to the turbos to let the heat out, but @boots4 makes good observations. I'm gonna wait for his recommendations and pictures.

 

[The Phoenician]

I'm back home and decided to mock up some of the parts that came in while I was gone. I can't decide what location to install the louvers, so your input is much appreciated.

Position 1

Position 2

Position 3

Position 4

Position 5

I'm leaning towards position 4/5 unless someone has a good reason not to install it there.

Part of me thinks I should have bought the even bigger louvers.

 

[The Phoenician]

Here's the mock up of the fans on an old FJ62 radiator I have laying around.

It's a perfect fit.

I'm taking the family to the lake, so I won't be installing anything today. I hope to start tackling this around the 4th of July.

 

[davegonz]

Which position puts them closer to the turbos?

 

[The Phoenician]

Which position puts them closer to the turbos?

Position 4 or 5 puts them the closer to the turbos.

 

[davegonz]

I like 4/5.

 

[The Phoenician]

Drove big red downtown to kayak, hit 220 doing above 65 mph. But it went back down to 210 when I slowed down. I really need to install the new fans.

 

[boots4]

Sorry for the delay. Been working on my AC project.

Here are some pics of where I put mine. I placed the front of the vent right at the back of the radiator underneath.

I decided to follow the raised hood line which made a little v between them.

I left the bracing underneath for hood strength. Our braces already have nice holes cut into them for air flow so I didn't add anymore.

My thoughts on placement:

I wanted to suck out the heat from under hood so I wanted a spot on the hood that had negative pressure and that meant towards the front of the hood. If you are willing to experiment I would tape a bunch of cut pieces of light yarn (~3") to the top of your hood in a grid like fashion. Each row could be 4-5" apart. Take a drive and see what the strings do. That should help you see what the air is doing over the top of your hood. Then decide if you want to pull out the air or push in air to dilute it. My thoughts were to suck out the air since air going over the top of the rig has better flow than air going under the rig. But with your accessories on top that might be different for you. My initial thoughts are since you have such big vents my suggestion is to place the front of the vent right above the back of your fans. With your fan shroud flaps that will allow additional air through the cooling row I side on having your under hood air sucked out.

 

[Hojack]

Look wise #5
The louvers look directed to blow air out than draw air in with their orientation. I would figure heat would build up further back in the engine bay with exhaust manifold and exhaust pipe.

 

[The Phoenician]

Sorry for the delay. Been working on my AC project.

Here are some pics of where I put mine. I placed the front of the vent right at the back of the radiator underneath.

I decided to follow the raised hood line which made a little v between them.

I left the bracing underneath for hood strength. Our braces already have nice holes cut into them for air flow so I didn't add anymore.

My thoughts on placement:

I wanted to suck out the heat from under hood so I wanted a spot on the hood that had negative pressure and that meant towards the front of the hood. If you are willing to experiment I would tape a bunch of cut pieces of light yarn (~3") to the top of your hood in a grid like fashion. Each row could be 4-5" apart. Take a drive and see what the strings do. That should help you see what the air is doing over the top of your hood. Then decide if you want to pull out the air or push in air to dilute it. My thoughts were to suck out the air since air going over the top of the rig has better flow than air going under the rig. But with your accessories on top that might be different for you. My initial thoughts are since you have such big vents my suggestion is to place the front of the vent right above the back of your fans. With your fan shroud flaps that will allow additional air through the cooling row I side on having your under hood air sucked out.

@boots4
Thanks for posting up the pictures and writing your suggestions on louver placement. I'm still leaning towards placing them in the rear of the hood, because I don't want heat from the turbo and exhaust building up. I'm having trouble picturing it suck air in instead of blowing it out. The louvers are directional, so I imagine the fan, plus forced air pushing everything towards the rear and then out. I'm mostly wanting this for when I sit in traffic. In traffic, I also imagine the hot air rising up to the hood and out, not building up in the engine compartment.

The problem with imagination is it borders on wishful thinking and dreaming. I'm going to test it out with the yarn experiment you suggested.

 

[Hojack]

Maybe ya need to get 4 for front and back Mike

 

[The Phoenician]

Maybe ya need to get a 4 for front and back Mike

Dude, if I buy one more car part I think she's filing for divorce.

 

[The Phoenician]

So it rained here a lot forcing us to change our lake plans and go to my friend's place to shoot in the rain and mud. We bought whisky, fireworks, ammo and meat . Had a literal blast.

The temps were not in the 3 digits today, the rained cooled everything off so Big Red ran at normal operation temps with the AC at full blast.

I think I'm saving up for a Sig MPX K 9mm

Happy Independence Day!

 

[pistonpete]

Mike those are nice vents ! I like #3 thinking the further back will pick up more heat to exit ? Now is the time to play around with placement before cutting the hood. Just for sh&% and giggles try flipping them sides and try to keep the centre lines parallel ??

 

[The Phoenician]

After drill, I met up with the guys at AJ's house, drank some good beer and saw some good people. Then we decided to install the louvers. I can't thank the guys enough for helping, they pretty much did it all while I stood there watching and snapping pictures.

Here's the real star of tonight, Brutus.

A couple of nice cruisers.

Started cutting into it after measuring it several times. I'm really impressed with Dave's straight cutting especially after all that beer.

It takes a village to get this done.

 

[The Phoenician]

Here's what it looks like.

From the underside

Finished product.

This thing moves some serious air just at idle. I drove it home and felt the heat from the turbo side come up when I parked it. I figure even if it doesn't help with my engine temps at all, it still allows the heat to escape and lower the temps for all the other components under the hood. So far I'm extremely happy with it.

 

[davegonz]

I want to hear some hard numbers.

 

[The Phoenician]

I want to hear some hard numbers.

I'll have to see tomorrow when the sun is up and it's much hotter. On my way home tonight it was normal temps all the way and I was gunning it.