2002 Thomas HDX, 84 passenger
Rear engine, Cat 3126B
So, to compliment the design I want, I am trying to figure out a way to create an impressive-looking intake and exhaust system.
The intake comes through the vents in the side and into the air cleaner. I could just cut those louvers out and put something a little more noticeable, or even just a heavy screen with a riveted/bolted metal border to give it a more industrial look. My concerns are:
- if the intake points towards the rear, like using a rear-facing hood scoop, will that create a suction effect, reducing air available to the motor?
- if the intake points towards the front, like using a forward-facing hood scoop, will I risk sucking in too much water since the rear tires are very close?
- if the intake becomes a flat screened panel with a border that is 1/4" further out than the screen, will a sucking effect be produced, sufficient to reduce avalable air to the engine?
Right now the exhaust comes from the driver's side of the engine, wraps around the entire motor, turning to exit on the passenger side in the manner show in the photo, projecting the exhaust towards the ground. Of course, I fantasize about huge dual crome stacks like those on the big rigs, but I really don't think that is possible, since I would have to cut through the body to make room for the pipe, not to mention sealing them properly, and not torching the bedroom as I go down the road. Running vertical exhaust on the outside of the bus, whether at the rear or sides, would violate the DOT width or length restrictions for this vehicle as far as I understand. So what can I do? I was thinking that perhaps I could have it just dump out the side through the bottom grate and make some sort of decorative element there, but I would be shortening the length of the exhaust pipe. Is a shorter exhaust a bad idea for diesels?
Thanks in advance for any help and inspiration you provide.