I asked this before...but after 6 months of 2 cycle oil use I've still got ticking going on. Sound comes out of both front wheel wells. No difference one side to the other. I try to listen to other 24 valve rigs out there and some have the clicking sound and others don't. I adjusted my valves, but should probably look at them again. Maybe one was way out and I adjusted at 20 rather than 10? Other than excessive lifter noise, could a bad injector cause the sound? Idle is smooth, but power and torque seems lower than I feel should be, but that's not backed up with any kind of inpherical evedence. Oil pressure good, fuel pressure optimum, fuel economy around 14 when towing a 4,000# work trailer. Does white smoke a bit on cold startup, but smooth. Wondering if that is more steam than smoke. Nothing has changed. Been this way ever sinc e I've owned it. I've put 30k miles on it. Wish I had one of you guys local to compare trucks with. With stock exhaust. I got on this subject again after watching the high idle cold start videos with white smoke coming out the tailpipe. Figure my first thing is to re-check my valve adjustment. I love this forum! Much more responsive and reliable knowledge than any other forum on any subject. Kudos to Michael! I'll send more money when I can. Money tight now as my hip is scheduled for replacement and I've been working at about half pace and therefore- half revenue. I am not only slow, but am limited on how long I work before pain becomes intolerable. I'm taking 12 asprin a day to maintain some level of comfort. At least my blood should be thin enough. Lol.

So what's there rectangular unit up front?

Probably just a resonator. There wasnt much on the 24 valves in the way of emissions.

Then it's got the long round unit further back.

The long round unit is the muffler. The short contraption before it is the resonator. At least, it should be....

It was great meeting and visiting with you, I hope you came away with some information, I know that I did.  I have read that you want some sort of muffler or resonator or the truck will be pretty loud.  As we discussed most like the RV275's.  I do like my 75 hp injectors though.  

i cut my exhaust off right b4 the resonator(had rodents in the exhaust....) its been like that for 3-4yrs and i love it. talking on the phone can be difficult but i enjoy the sound of a CTD over any other motor. some prefer a mustang 223 or a chevy 350. and drive thrus usually double time it to get my away from their buildings.