Bonnet Louvres

[grazza]

That would be right, but I dont know how well a bonnet would seal anyway. The edge on the guards is not normally sealed.

Then again I dont think it would be wise to rely on the bonnet sealing an air pocket - I would still seal up the electrics somehow before such a deep crossing.

If it would make a big difference, maybe some plastic taped under the lourve would seal it enough.

[toughnut]

Boothy has a set of the BV01 vents on his patrol. The sit in front of the bonnet bolge and you can hardly even notice them. They look good too.

[grazza]

In front of the bonnet bulge? Would it not be better as far to the rear of the bonnet as possible. To allow heat to get out of the bonnet, not a scoop to force are it.

[bundyrum4x4]

My bonnet is spaced up at the hinges - some of you dont like it, thats cool.

BUT

The results are interesting!

It lets the heat out and allows more air through the radiator and keeps the motor much cooler. I used to have lots of temp problems before I did this, now I never back off because of temp, unless the radiator is full of mud.

Bogged mentioned fitting scoops at the front of the bonnet to allow more air in. Why? There is plenty of room for air to get in through the radiator. If not, then move you spotlights etc to make more room. Help the radiator as much as possible!

The only negative to putting rear mounted scoops at the back of the bonnet is that the hot air comes out and into your cabin fan so you get some hot air in the cab if you have the fan turned on.


OK, flame suit is on so let me have it

[MKPatrolGuy]

My bonnet is spaced up at the hinges - some of you dont like it, thats cool.

BUT

The results are interesting!

It lets the heat out and allows more air through the radiator and keeps the motor much cooler. I used to have lots of temp problems before I did this, now I never back off because of temp, unless the radiator is full of mud.

Bogged mentioned fitting scoops at the front of the bonnet to allow more air in. Why? There is plenty of room for air to get in through the radiator. If not, then move you spotlights etc to make more room. Help the radiator as much as possible!

The only negative to putting rear mounted scoops at the back of the bonnet is that the hot air comes out and into your cabin fan so you get some hot air in the cab if you have the fan turned on.


OK, flame suit is on so let me have it

Were your temp problems at high speed or low speed?

[bundyrum4x4]

Mainly high speed hill climbs

[MKPatrolGuy]

Mainly high speed hill climbs

Might try it then and see what happens. It is more mucking around on the MK bonnet though because the hinges mount on the side of the bonnet not underneath like the GQ.

[bundyrum4x4]

just use flat plates to test the idear.

I lifted mine 30mm

[Shorty40]

What about taking the rubber 'aprons' off from inside the wheel tubs ?

If you are going to go wheeling in mud/water put them back on. But it sounds like the problem is on-road anyway..

Just brain storming

[bogged]

Bogged mentioned fitting scoops at the front of the bonnet to allow more air in. Why? There is plenty of room for air to get in through the radiator. If not, then move you spotlights etc to make more room. Help the radiator as much as possible!

True, but if you have a transmission cooler, an air cond condencer infront of radiator, movin the spotties doesnt really help that much.

I think front and rear scoops would be the most effective. Front to let air in, rear to let out.

But remember that theres 1000's of GQ's out there with turbos without any issues. So in reality, there must be something wrong with the standard cooling system.

If you do a body lift, when you remove the lower radiator shroud, you cause issues with the fan being as effective. You have to replace the lower shroud with something, that being Rubber mat, ally/sheet metal made up lower shroud etc...

[bundyrum4x4]

Bogged mentioned fitting scoops at the front of the bonnet to allow more air in. Why? There is plenty of room for air to get in through the radiator. If not, then move you spotlights etc to make more room. Help the radiator as much as possible!

True, but if you have a transmission cooler, an air cond condencer infront of radiator, movin the spotties doesnt really help that much.

I think front and rear scoops would be the most effective. Front to let air in, rear to let out.

But remember that theres 1000's of GQ's out there with turbos without any issues. So in reality, there must be something wrong with the standard cooling system.

If you do a body lift, when you remove the lower radiator shroud, you cause issues with the fan being as effective. You have to replace the lower shroud with something, that being Rubber mat, ally/sheet metal made up lower shroud etc...

If you look at most well set up comp trucks, they have their bonnets raised like mine - thats where I got the idea from .

I disagree with moving the spottiest not helping - anything removed will help. I have tested this and its worked well on my truck.

As to thousands of gq's with aftermarket turbos agreed, but what boost and other vehicle mods have been done which can ad to temps. Remember the GQ was not designed to have a turbo ex-factory so maybe the standard radiator is at its limit with a turbo, the extra mods may go past its limits. All I am doing is trying to help the system cope.

Again I agree with the body lift affecting things. If the radiator shroud is not modified, it decreases the cooling efficiency drastically. BUT, a body lift can allow more air flow around the engine as the air can escape around the transition tunnel etc.

To summarize my experiences, I removed spottiest from in front of the radiator, and lifted the bonnet to allow the hot air to escape. Problem solved.
Maybe my radiator is getting tired and will need replacing some day but I know with these mods my new radiator will be able to do its job easier.

Flame suit still on so let me have it