That's a pretty good idea with the switch. That way if you're not paying attention to your gauge it will still turn on if it gets too hot. Also If the wife or GF uses your car you don't have to explain to them what that switch does.

 

hey theblack hood prop woorks better if you only put spacers on the back bolts.

 

This is mine I got 4 small 3". Vents 2facing forward to pull air an the other 2 face the backwards. An spacered hood.

 

?, not sure what you are saying.

 

Ha Ha you posted the picks before i posted. I see said the blind man to his deaf daughter. I suppose that it will work ok. Mabe not as strong since its not flush, but still works.

 

I would love for someone to actually find a picture of a hood that has good through a windshield because of a hood spacer. MANY of the little tuner cars run around with spacers and they crash all the time.

 

He's not saying it will happen, he's just warning you it could. Kinda like saying be careful with what you mess with.

 

exactly. I'd rather not take unnecessary risks. Yeah, its cheap. but I like to go by the saying of "if you can't afford to do it right the first time don't do it at all" When I finally get around to working on keeping my underhood temps down I'm going to wiring a taurus fan into the stock fan circuit so it still comes on at 225 degrees and i'll also wire a switch so I can keep it running full time in Hi or Lo mode. That with hood vents and I should be more than set.

FYI, clean out your radiator, you'd be shocked how much mud they can hold and how much that can negatively affect the Jeep's ability to cool itself.

 

Theblack... When u only do the one bolt it lifts it higher with less spacers.

 

I think it would have worked OK with the firewall holes...I mean, if you've ever seen a car burn, you know the firewall doesn't stop very much fire...

 

Or instead of wiring in a switch, just before you go fourwheeling disconnect the the wire going to the clutch on your ac compressor. Then when you turn the ac on the electric fan kicks on but doesn't run the ac. If you don't have an ac then you could run it like that all the time the only thing would be some air coming through the vents.

 

A quick calculation of a 3/8" grade 8 bolt. According to rockcrawler.com and a few other sites the average shear strength is roughly 10000 lbs. Now, using F=ma where 1g equals approximately the acceleration to 22mph in 1 second.

The mass of a Jeep (conservative according to wikipedia) is 3057 lbs or 1387kg.

Acceleration (or deceleration in the event of an accident) is 32.2 ft/s^2 or 9.81m/s^2

Assuming the Jeep stopped from 22mph in 1 second

F= 1387*9.81 = 13,606 N or 3058 pound force

So according to this it would take an accident equivalent of stopping from
66 mph in 1 sec to come close to shearing a 3/8" grade 8 bolt.

Given that most of my driving is highway 66mph is not that unlikely. Even if the bolt didn't break I still don't think I would risk it. Only if it was for trail only where the speeds never reach 10mph. Now as for the hood buckling before the hood...probably...but again I wouldn't risk it.... jmo though

 

Not to mention from what I've seen most people aren't using grade 8 or 5 hardware. I'm sure it works. My opinion is that its a bad idea. what my suggestion is(and I plan to do) is to cut holes in the hood for vents, then go ahead and put a hi-flow electric fan in it. problem solved

 

gerr you beat me to the physics. im in physics now and i accualy knew that one lol

 

Yea I figured most people weren't using grade 8 but I saw on here somewhere were someone said they were so I went with that.

Yea....grad school finally paid off....ha ha