EricF Posted August 11, 2005 Report Share Posted August 11, 2005 sounds like something I would do ←But it worked :P Link to comment Share on other sites More sharing options...
lax01 Posted August 11, 2005 Report Share Posted August 11, 2005 But it worked ←mine works, it just might brake other stuff in the process ;) Link to comment Share on other sites More sharing options...
Chris_R Posted August 11, 2005 Report Share Posted August 11, 2005 Well crap! I thought I was doing good by cleaning the coked oil out of the EGR hole in the intake. Ooops. Link to comment Share on other sites More sharing options...
GShyneDM Posted August 11, 2005 Report Share Posted August 11, 2005 Anyways, there is nothig to lose with this mod. It costs nothing and literally takes 30 seconds. The beauty is that it looks 100% stock, and can be reversed at any time.- Slater←Dont know if the design is the same for older models before 98... but Allowing the heat to exit from that part of the hood would mean that the air you blow from the fan of your car will be +(whatever heat from your engine bay) correct?The In-cabin air filter sucks air from there (plastic vents) and from behind the back of the engine bay with a rubber tube gathering cooler? air from below the car. Wouldn't this in turn make your A/C less efficient if in use? Link to comment Share on other sites More sharing options...
volflo Posted August 11, 2005 Report Share Posted August 11, 2005 Thanks again for the beers Florian!- Slater←...my pleasure. and the idea with the removed seal just came to my mind while we were discussing those things. So i will do that same thing as well in addition to my scoop.i like that washer idea should work nicely as well. and it s cheap plus reverseable...by the way. it was very interesting talking to you, i learnt a lot.guyz, please note, that this man knows his stuff...... by the way.: i miss my car.............. Link to comment Share on other sites More sharing options...
PullMyFinger Posted August 11, 2005 Report Share Posted August 11, 2005 Dont know if the design is the same for older models before 98... but Allowing the heat to exit from that part of the hood would mean that the air you blow from the fan of your car will be +(whatever heat from your engine bay) correct?The In-cabin air filter sucks air from there (plastic vents) and from behind the back of the engine bay with a rubber tube gathering cooler? air from below the car. Wouldn't this in turn make your A/C less efficient if in use?←Actually, I'm thinking that the area at the back of the hood / bottom of windshield is a high pressure zone when the car is in motion. Thus, the air would be flowing down at that point.The heat rising up that Slater noticed was while the car was parked after driving and heating everything up. Link to comment Share on other sites More sharing options...
JCviggen Posted August 11, 2005 Report Share Posted August 11, 2005 by the way.: i miss my car..............←So do we man...its Ring weekend this sat&sun but no crazy fast estate to see anywhere :( Link to comment Share on other sites More sharing options...
orange850t Posted August 11, 2005 Report Share Posted August 11, 2005 Actually, I'm thinking that the area at the back of the hood / bottom of windshield is a high pressure zone when the car is in motion. Thus, the air would be flowing down at that point.The heat rising up that Slater noticed was while the car was parked after driving and heating everything up.←No way, otherwise bernoulli was wrong!!!!! Link to comment Share on other sites More sharing options...
orange850t Posted August 11, 2005 Report Share Posted August 11, 2005 Dont know if the design is the same for older models before 98... but Allowing the heat to exit from that part of the hood would mean that the air you blow from the fan of your car will be +(whatever heat from your engine bay) correct?The In-cabin air filter sucks air from there (plastic vents) and from behind the back of the engine bay with a rubber tube gathering cooler? air from below the car. Wouldn't this in turn make your A/C less efficient if in use?←This happens anyway, especially in stop and go. Use recirc..... Link to comment Share on other sites More sharing options...
volflo Posted August 11, 2005 Report Share Posted August 11, 2005 Actually, I'm thinking that the area at the back of the hood / bottom of windshield is a high pressure zone when the car is in motion. ←....not compared to the area underneath the car, where the air would have to go if hood is sealed. this is the reason why the coolers are get no otimum air stream.the air generates less flowin down if zou open that seal, id say Link to comment Share on other sites More sharing options...
orange850t Posted August 11, 2005 Report Share Posted August 11, 2005 ....not compared to the area underneath the car, where the air would have to go if hood is sealed. this is the reason why the coolers are get no otimum air stream.the air generates less flowin down if zou open that seal, id say←Yes, reality is that the air travelling over the car is going fast and pulls the boundary layer (air travelling on surface of car) with it. It basically skips over the well infront of the windshield creating a LOW pressure area . Actually according to fluid dynamics the air travelling under the car travels faster than the air going over (it moves in a straight line) this tends to lift the car at high speeds (think airplane wing.) But since it is moving so fast it effectively skips the engine bay and continues on under the car, the engine bay opening is too large to create any low pressure though . Link to comment Share on other sites More sharing options...
PullMyFinger Posted August 11, 2005 Report Share Posted August 11, 2005 Well, I understand the laminar flow concept of the airplane wing. But I thought cars were designed to create low pressure underneath to keep the car on the road at high speeds.The air dam in front diverts more air over the car than it does under it.I found a couple pics of wind tunnel simulations, not the ones I remember seeing though (which were better). They show a high pressure zone at the base of the windshield. However, they don't show what is happening below the car.I guess we could tape some vortex indicators (yarn maybe?) onto the rear edge of the hood to see which way the air is going and at which speeds. Link to comment Share on other sites More sharing options...
orange850t Posted August 12, 2005 Report Share Posted August 12, 2005 yes, there is high pressure on the surface of the window. The green pic shows it best, that is from the change in direction. But about 2-3" infront of the window should be a local area of low pressure. You could put a telltale on the hood gasket. We use a strand of yarn on the sailboat. CFD is great but you might miss a small area of interest when you use a global model. If you were to model just the front of the windshield and hood you would get much better fidelity.You are correct on the air dam statement. The car does produce some lift but it is tiny compared to its weight and drag. Now a F-1 car is a different story hence the large wings.<----- is a geek, sorry if I am boring you.EDIT: I do realize those are not your models. I was generalizing. Link to comment Share on other sites More sharing options...
Slater Posted August 12, 2005 Author Report Share Posted August 12, 2005 Dont know if the design is the same for older models before 98... but Allowing the heat to exit from that part of the hood would mean that the air you blow from the fan of your car will be +(whatever heat from your engine bay) correct?The In-cabin air filter sucks air from there (plastic vents) and from behind the back of the engine bay with a rubber tube gathering cooler? air from below the car. Wouldn't this in turn make your A/C less efficient if in use?←I have noticed zero problems. My AC is as cold as ever.... Link to comment Share on other sites More sharing options...
Slater Posted August 12, 2005 Author Report Share Posted August 12, 2005 Actually, I'm thinking that the area at the back of the hood / bottom of windshield is a high pressure zone when the car is in motion. Thus, the air would be flowing down at that point.The heat rising up that Slater noticed was while the car was parked after driving and heating everything up.←Why did I see an intake temperature DROP when the car was moving with no seal vs the seal? Link to comment Share on other sites More sharing options...
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