bike-maker
Full Access Member
I've been running the same road draft tube setup for about a 1 and a half now; never started a thread about it, but I'm going to update the status of this anyway.
Originally switched to a road draft tube when still naturally aspirated.
Built an aluminum plate to bolt on the IP cover, like the banks setup, and ran a 1" hose over the top of the alternator and down.
Version 1: ran the hose straight down and terminated it next to the pass. side leaf spring.
-oil consumption went down
-if left idling while parked for any length of time, the heater would pull some of the fumes from the RDT into the cab - momma not happy
Version 2: ran a longer hose and had it dumping out on the side of the transmission tailhousing
-same oil consumption
-heater would still pull fumes into the cab - momma still not happy
Version 3 (current version): welded a bung into the end of the downpipe and plumbed the RDT into the exhaust.
-same oil consumption
-no more fumes/smell in the cab - momma now happy
-more smoke out of the exhaust
-oil in the exhaust system
Round these parts, most of the old IDI's smoke like a freight train, run really quiet, and don't make any power. This is probably due to the fuel system having way too many miles on it because.....well, it just keeps running.
So I don't like the extra smoke coming out the exhaust; the plus to this is that it's far enough back there that the passengers don't complain about the funky burnt oil smell.
My exhaust system now has a significant buildup of oil in it; could be more of an issue if running a muffler.
And here's the interesting part that I am recently noticing; I mostly just drive my truck to work and back, but when I take it on longer trips, I take the opportunity to run the hell out of it. When under a good load - like going up a hill at WOT - the exhaust starts to get hot enough to start burning the oil out of the exhaust system. It's easily noticed by the lack of rearward vision due to the massive cloud of pretty blue smoke - the kind of smoke that is usually followed shortly after by engine parts being slung across the road.
So even though this seemed like a good idea in the beginning, it's fatal flaw has been realized.
I now have a turbo, a cold air intake setup, and am on my way to having a intercooler plumbed in. I haven't yet decided if I'm willing to put a CDR back in the system and pump oil through the turbo and intercooler, but something is going to change.
Originally switched to a road draft tube when still naturally aspirated.
Built an aluminum plate to bolt on the IP cover, like the banks setup, and ran a 1" hose over the top of the alternator and down.
Version 1: ran the hose straight down and terminated it next to the pass. side leaf spring.
-oil consumption went down
-if left idling while parked for any length of time, the heater would pull some of the fumes from the RDT into the cab - momma not happy
Version 2: ran a longer hose and had it dumping out on the side of the transmission tailhousing
-same oil consumption
-heater would still pull fumes into the cab - momma still not happy
Version 3 (current version): welded a bung into the end of the downpipe and plumbed the RDT into the exhaust.
-same oil consumption
-no more fumes/smell in the cab - momma now happy
-more smoke out of the exhaust
-oil in the exhaust system
Round these parts, most of the old IDI's smoke like a freight train, run really quiet, and don't make any power. This is probably due to the fuel system having way too many miles on it because.....well, it just keeps running.
So I don't like the extra smoke coming out the exhaust; the plus to this is that it's far enough back there that the passengers don't complain about the funky burnt oil smell.
My exhaust system now has a significant buildup of oil in it; could be more of an issue if running a muffler.
And here's the interesting part that I am recently noticing; I mostly just drive my truck to work and back, but when I take it on longer trips, I take the opportunity to run the hell out of it. When under a good load - like going up a hill at WOT - the exhaust starts to get hot enough to start burning the oil out of the exhaust system. It's easily noticed by the lack of rearward vision due to the massive cloud of pretty blue smoke - the kind of smoke that is usually followed shortly after by engine parts being slung across the road.
So even though this seemed like a good idea in the beginning, it's fatal flaw has been realized.
I now have a turbo, a cold air intake setup, and am on my way to having a intercooler plumbed in. I haven't yet decided if I'm willing to put a CDR back in the system and pump oil through the turbo and intercooler, but something is going to change.
