MJA Racing Posted June 9, 2017 Report Share Posted June 9, 2017 Can a header pass thru the firewall if a new sealed bulkhead is built to separate it from the passenger compartment? Quote Link to comment Share on other sites More sharing options...
Ron_e Posted June 9, 2017 Report Share Posted June 9, 2017 Sounds like you are just reconfiguring your firewall into a different shape. Note, I said, "sounds like", maybe some pictures to help? Passing the exhaust pipe, though contained, through the passenger area might make the driver area a bit warm. 1 Quote Link to comment Share on other sites More sharing options...
MJA Racing Posted June 9, 2017 Author Report Share Posted June 9, 2017 It's only a 4cyl so it's plenty far enough away and easy enough to insulate. Quote Link to comment Share on other sites More sharing options...
Administrators Bill Strong Posted June 10, 2017 Administrators Report Share Posted June 10, 2017 Yes. Steel enclosure. And you need to have a muffler on it. 1 Quote Link to comment Share on other sites More sharing options...
Bandit Posted June 24, 2017 Report Share Posted June 24, 2017 On 6/9/2017 at 4:49 PM, Ron_e said: Sounds like you are just reconfiguring your firewall into a different shape. Note, I said, "sounds like", maybe some pictures to help? Passing the exhaust pipe, though contained, through the passenger area might make the driver area a bit warm. I figure my 180's will keep my feet much cooler. Will have to do some shielding around the distro though. 2 Quote Link to comment Share on other sites More sharing options...
pintodave Posted June 24, 2017 Report Share Posted June 24, 2017 Was always curious how tech would view this. It is added sheetmetal, but not an aero advantage (or it shouldn't be constructed as such...), so is it just considered a bulkhead/firewall for safety like having to build a real firewall for a fuel cell install thus no points? I have a reason for asking. There is ZERO room for any logical exhaust involving an aftermarket oil pan under an F-body (stock exhaust crossed over between bell housing & oil pan - just as terrible). The way I have it now is fine, except when you get to mid-chassis, you are forced to follow the floor pan contours which make it darn near impossible to route the exhaust without running up along the tunnel (which is where the OEM routing ends up eventually) and the heat would be ridiculous OR sacrificing ground clearance to run it out in front of the rear tire. Scabbing up the floor board a bit was discussed. I know. You didn't pick my platform, I should have picked an E36 or SC300. 3 Quote Link to comment Share on other sites More sharing options...
Bandit Posted June 25, 2017 Report Share Posted June 25, 2017 (edited) 5 hours ago, pintodave said: Was always curious how tech would view this. It is added sheetmetal, but not an aero advantage (or it shouldn't be constructed as such...), so is it just considered a bulkhead/firewall for safety like having to build a real firewall for a fuel cell install thus no points? I have a reason for asking. There is ZERO room for any logical exhaust involving an aftermarket oil pan under an F-body (stock exhaust crossed over between bell housing & oil pan - just as terrible). The way I have it now is fine, except when you get to mid-chassis, you are forced to follow the floor pan contours which make it darn near impossible to route the exhaust without running up along the tunnel (which is where the OEM routing ends up eventually) and the heat would be ridiculous OR sacrificing ground clearance to run it out in front of the rear tire. Scabbing up the floor board a bit was discussed. I know. You didn't pick my platform, I should have picked an E36 or SC300. With the engine being half under the windshield 180's likely won't work either. Edit-I wouldn't want to try and install them anyway. May work with the subframe engine install though. No distro to worry about as well. Sounding better by the minute... Edited June 25, 2017 by Bandit Quote Link to comment Share on other sites More sharing options...
Justin9 Posted June 25, 2017 Report Share Posted June 25, 2017 3 hours ago, pintodave said: Was always curious how tech would view this. It is added sheetmetal, but not an aero advantage (or it shouldn't be constructed as such...), so is it just considered a bulkhead/firewall for safety like having to build a real firewall for a fuel cell install thus no points? I have a reason for asking. There is ZERO room for any logical exhaust involving an aftermarket oil pan under an F-body (stock exhaust crossed over between bell housing & oil pan - just as terrible). The way I have it now is fine, except when you get to mid-chassis, you are forced to follow the floor pan contours which make it darn near impossible to route the exhaust without running up along the tunnel (which is where the OEM routing ends up eventually) and the heat would be ridiculous OR sacrificing ground clearance to run it out in front of the rear tire. Scabbing up the floor board a bit was discussed. I know. You didn't pick my platform, I should have picked an E36 or SC300. That idea I had about cutting out the floor sounds better now don't it... 3 Quote Link to comment Share on other sites More sharing options...
Evilwheel Posted June 25, 2017 Report Share Posted June 25, 2017 3 hours ago, pintodave said: Was always curious how tech would view this. It is added sheetmetal, but not an aero advantage (or it shouldn't be constructed as such...), so is it just considered a bulkhead/firewall for safety like having to build a real firewall for a fuel cell install thus no points? I have a reason for asking. There is ZERO room for any logical exhaust involving an aftermarket oil pan under an F-body (stock exhaust crossed over between bell housing & oil pan - just as terrible). The way I have it now is fine, except when you get to mid-chassis, you are forced to follow the floor pan contours which make it darn near impossible to route the exhaust without running up along the tunnel (which is where the OEM routing ends up eventually) and the heat would be ridiculous OR sacrificing ground clearance to run it out in front of the rear tire. Scabbing up the floor board a bit was discussed. I know. You didn't pick my platform, I should have picked an E36 or SC300. This ! And earplugs ! 2 Quote Link to comment Share on other sites More sharing options...
Bandit Posted June 25, 2017 Report Share Posted June 25, 2017 1 hour ago, Evilwheel said: This ! And earplugs ! My 180's run that way, but I'm putting 90's on the collectors, a y pipe and muffler in the door. Passenger might get warm but I don't ride over there. Quote Link to comment Share on other sites More sharing options...
pintodave Posted June 25, 2017 Report Share Posted June 25, 2017 3 hours ago, Justin9 said: That idea I had about cutting out the floor sounds better now don't it... I've been keeping this struggle real before you knew it was an issue I've just been trying to work around hacking stuff up... 3 hours ago, Evilwheel said: This ! And earplugs ! I would gladly do that if it wasn't for the pesky rule about exhaust having to exit even with the main hoop 1 Quote Link to comment Share on other sites More sharing options...
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