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Oil injection
Posted: Tue Jan 29, 2008 12:38 am
by Eman
What is everyone doing with the oil injection systems? I have a 83 and no faith in the system. Right now I mix gas and run the injection but i am planning on not using the injection. Would it be good to just disconnect the cable and let it run on "idle mode" all of the time, or do people completely remove the injection
Dennis
Posted: Wed Jan 30, 2008 12:54 pm
by jefflanthier
Mine has nothing left. Premix 50:1
Posted: Wed Jan 30, 2008 2:47 pm
by opsled
I've never had or seen an issue with them but others say they have. I've seen Vmax 540's, Exciter's, Vmax 5 and 600's, Vmax4's, etc with many thousands of miles on them that have never had an issue with an oil injection related problem. I'm sure there have been failures but I don't think it's common or something to be really concerned with. On a trail sled I would leave it hooked up and adjusted. Some move the lines to the manifold as they think it is a safer way to inject the oil. Others will completely remove it and premix. You could run it as is, run it and premix or remove it, the choice is yours and I don't think you will get 100% agreement on the issue anywhere. Personally I think the sceptics on Yamaha's oil injection method of injecting oil into the fuel line before the fuel pump is over hyped but I'm not being paid for a professional opinion on the matter or trying to sell someone a kit to fix it so what do I know.
opsled
Posted: Wed Jan 30, 2008 8:17 pm
by Undertaker#13
I premix 40:1 with Yamaha Lube
injection vs no..
Posted: Wed Jan 30, 2008 9:52 pm
by srxvmax50
Over the years I 've developed a trust in Yammie's factory oil injection pumping-routing systems. Mainly because the sys. faithfully served so many original engine configurations, over so many models and years. If you are now looking at any changes to carb airflow, porting, overbore , or custom pipes whatever, then it's best to premix racing type oil with higher octane gas. Ahh, good luck to ya. MJD
Posted: Wed Jan 30, 2008 10:51 pm
by Undertaker#13
sorry don't need Luck when you race a Yamaha!! Custom pipes gets you know where!! Tim Bender told me never to change pipes. I set the Vmax to what Tim Bender told me and that old max has done nothing, but haul A$$!! These old Vmax are hard to Beat! These sleds should be raced in the 500 Class. I agree if you make the Vmax a Mod use racing Gas! I had a Factory Yamaha rep tell me not to trust the oil injection! I've premixed and raced the Vmax for 17 years, and have never had a problem! 