Vents for Exhaust Cooling - Question

[1795]

Dave,

I have the vents in ERA 717, they have been there all along, and there has never been a situation that I thought my feet were getting too hot. I have taken several drives of between 250-450 miles and never felt overheated, even in temps in the 90's.

Jim

[DanEC]

I don't have the vents on my ERA but I would believe they lower the temperatures on the foot boxes just by mixing, cooler, outside air with radiant heat off the pipes.

A question I have, and the reason I haven't installed the vents, is how much dirt, dust and road debris do they channel into the engine compartment from the wheel well?

[1985 CCX]

On my old CCX the boxes heated up versus without them. Spoke to Dave about this...

Heat passed over footbox and transferred the heat, keep in mind my boxes were not covered or insulated....

[davids2toys]

Thanks Jim, appreciate it

Dan, I would think quite a bit. Just look at the back of your wheel-well, that should give you an idea. I never thought about that aspect of it...hmmm

I also have a couple of more issues:

1) I have the heat shields and the aluminum panel option in the engine bay. Locations of the big hole and flange will definitely interfere with the heat shields. I will also be cutting thru FG and aluminum at the same time. Not sure of how much of a problem that will be.

2) My left from wheel is hitting/rubbing o n the inner fender well when making lefty turns. You can't hear it but you sure can see it. It is just about thru the FG. In searching the forum, I am not the only one with this problem I also believe it came up in a conversation with Doug a long time ago. I think he thought it was kind of normal. I have the same problem on the Pass side only to a much much lesser degree! That side I could definitely live with.
So, if I do the screen, then the tire will be hitting the screen. As cool as the vents look, I am not sure it is going to be worth the effort

[DanEC]

Against ERA's recommendations, I'm running 27 inch tall 70 series tires on my front and when first set up my left one rubbed a little on the bottom of the lip where it is rolled under. I ground a little on the lip to angle the inside edge back a little and just barely cleared. But by the time I set the suspension height and aligned the front, I ended up with good clearance. It's not noticeable.

Is this the same place yours is rubbing - at the lower roll under for the rocker panel? Can you just grind the edge of the lip back slightly, contour it and touch up the edge with some paint? I think the body update came between our cars so mine may be slightly different in that area.

Here was the bottom of my fender lip showing the contact before I did some grinding.

[davids2toys]

Originally Posted by DanEC

Against ERA's recommendations, I'm running 27 inch tall 70 series tires on my front and when first set up my left one rubbed a little on the bottom of the lip where it is rolled under. I ground a little on the lip to angle the inside edge back a little and just barely cleared. But by the time I set the suspension height and aligned the front, I ended up with good clearance. It's not noticeable.

Is this the same place yours is rubbing - at the lower roll under for the rocker panel? Can you just grind the edge of the lip back slightly, contour it and touch up the edge with some paint? I think the body update came between our cars so mine may be slightly different in that area.

Here was the bottom of my fender lip showing the contact before I did some grinding.

No Dan, not even close. I am 5" above your location (see pics I just took).
I also have a little damage to the Pass side, but nothing like this.
I am running BFG 235/60R15. I believe this is what is called out for by ERA.