If you run the cone filters you probably already realize that they pick up hot engine compartment air, which kills any gains in breathing, and no, the temperature does not go down (much) when you are moving. I log IAT and it always stays elevated higher then the stock air box.
Almost four years ago I fabricated a plate because I was running the cones. The block-off plate goes from the cross-member to the top of the radiator. The gains were two fold, the intake air temp goes down and the engine temperature drops under cruise. It had the same affect that the Roe under-nose kit did, it dropped my engine temps about 5-8 degrees.
Another reason for the plate was the need to mount a two stage nitrous kit. With any nitrous set-up ideally, you want the solenoid-to-nozzle hose lengths minimized. The plate allows the shortest possible lengths. plus, it makes the mounting neat and easy (maybe easier). It is also the coolest part of the engine compartment which minimizes nitrous phase change.
Last but not least, whether you realize it or not if you autocross or road race you have a major issue with oil being pulled from the engine into the intake. It comes from two areas, the tubing on the front of each valve cover and perhaps even worse, the oil pulled thru the pcv and back into the intake. This all happens under the intake. Any racer who pulls the manifold will be shocked by the oil in the runners and intake/head ports. This is also exacerbated by after-market rockers such as the t&d's that put more oil up on top. You can eliminate both problem areas and mount (2) breather/catch cans on the under side of the plate. If you have ever tried to mount two catch cans (in a viper) you know the difficulty of finding an unobtrusive home. In this case you don't even know they are there.
Anyhow here is the reason for this thread. I became tired of the aesthetics of my four year old plate, so I decided to fabricate one that looked more oem. I generated a drawing and then programed it into a program run on a plc controlled press/punch press. I am going to make a run of five pieces just to see if there is a demand. I am also going to get these powder coated. The first five will be done in about one week and will probably be red. If anyone is interested let me know, if there is no interest, I have four spares.
In summary:
1. Lowers temperature above the plate, great for cones.
2. Lowered the operating temperature at cruise (related to a high pressure area behind the radiator)
3. Provides area for mounting nitrous hardware and fuel block.
4. Perfect for mounting catch cans underneath. I will post a picture next week. Right now it is set up for (2) one pint breather/cans.
5. It also provides a spot for a bracket that holds the nozzles for a fire suppression system. This is a separate bracket, but the position is perfect, with a 2 x 150 degree nozzle it points at all of the problem areas.
I don't really know how far this will go, or if anyone really wants or needs one. The plate will be a finished product and prepunched for mounting. It will automatically come with the holes for the catch cans, because, the underside space is limited and I already have that mounting perfect. The catch cans and the fire supression brackets would be separate items.
It will only work on a Gen 2 and cannot be used with the oem air box. I will post pictures of the complete plate system next week. My motivation, it was just as easy to make five as it was one.
Jan 05 2006 11:31 PM Post Extras: Edit Reply Quote Quick Reply
Almost four years ago I fabricated a plate because I was running the cones. The block-off plate goes from the cross-member to the top of the radiator. The gains were two fold, the intake air temp goes down and the engine temperature drops under cruise. It had the same affect that the Roe under-nose kit did, it dropped my engine temps about 5-8 degrees.
Another reason for the plate was the need to mount a two stage nitrous kit. With any nitrous set-up ideally, you want the solenoid-to-nozzle hose lengths minimized. The plate allows the shortest possible lengths. plus, it makes the mounting neat and easy (maybe easier). It is also the coolest part of the engine compartment which minimizes nitrous phase change.
Last but not least, whether you realize it or not if you autocross or road race you have a major issue with oil being pulled from the engine into the intake. It comes from two areas, the tubing on the front of each valve cover and perhaps even worse, the oil pulled thru the pcv and back into the intake. This all happens under the intake. Any racer who pulls the manifold will be shocked by the oil in the runners and intake/head ports. This is also exacerbated by after-market rockers such as the t&d's that put more oil up on top. You can eliminate both problem areas and mount (2) breather/catch cans on the under side of the plate. If you have ever tried to mount two catch cans (in a viper) you know the difficulty of finding an unobtrusive home. In this case you don't even know they are there.
Anyhow here is the reason for this thread. I became tired of the aesthetics of my four year old plate, so I decided to fabricate one that looked more oem. I generated a drawing and then programed it into a program run on a plc controlled press/punch press. I am going to make a run of five pieces just to see if there is a demand. I am also going to get these powder coated. The first five will be done in about one week and will probably be red. If anyone is interested let me know, if there is no interest, I have four spares.
In summary:
1. Lowers temperature above the plate, great for cones.
2. Lowered the operating temperature at cruise (related to a high pressure area behind the radiator)
3. Provides area for mounting nitrous hardware and fuel block.
4. Perfect for mounting catch cans underneath. I will post a picture next week. Right now it is set up for (2) one pint breather/cans.
5. It also provides a spot for a bracket that holds the nozzles for a fire suppression system. This is a separate bracket, but the position is perfect, with a 2 x 150 degree nozzle it points at all of the problem areas.
I don't really know how far this will go, or if anyone really wants or needs one. The plate will be a finished product and prepunched for mounting. It will automatically come with the holes for the catch cans, because, the underside space is limited and I already have that mounting perfect. The catch cans and the fire supression brackets would be separate items.
It will only work on a Gen 2 and cannot be used with the oem air box. I will post pictures of the complete plate system next week. My motivation, it was just as easy to make five as it was one.
Jan 05 2006 11:31 PM Post Extras: Edit Reply Quote Quick Reply
