87Iroc 344 Posted October 18, 2020 Saw this on a Honda Hoarders page on Facebook... Figure it must be for chain drive ATVs like the sports...but thought I'd check Share this post Link to post Share on other sites
SlammedRanger 1,556 Posted October 18, 2020 Hard to tell from that picture what atv it could be going on. But its squirting oil right at the crank lower rod bearing. I would have to imagine it taps into the main oil supply going to the topend maybe? Seems that would require a stronger oil pump or it would starve the topend? I would have to guess a trx450r? No other hondas have bottom end problems at all. Unless the oil is drained and not replaced or never changed. 1 Share this post Link to post Share on other sites
87Iroc 344 Posted October 18, 2020 Thanks. I had assumed it was the chain....which would drip a TON of oil if it wasn't controlled. Inside the crankcase makes more sense. I wonder if the 450R has a factory oil spriter and he's modifying it for better oiling. On the oil pump, you might be able to shim the spring to hold oil pressure up....but I'd have to pull out my Fluid Dynamics book and that sounds like work. Share this post Link to post Share on other sites
SlammedRanger 1,556 Posted October 18, 2020 The 450r and 400ex and i would have to imagine the utilities are the same. Have a hollow crank half where it sends oil up into the crank pin and out a hole under the rod bearing. So i cant honestly wrap my head around why this would be necessary at all? The rod even has a hole running up it which pushes oil up to the wrist pin. I guess this squirter maybe hits the outside of the piston skirt maybe? I have been racking my brain on why someone would go through the trouble. Doesnt make much sense to me. Share this post Link to post Share on other sites
