Can you overfill a dry sump motor ?

Thinking about this as I changed my oil today. I bought 2l of Bel Ray Thumper oil and as I was changing the filter I decided to put it all in the bike. I think it's a little more than 2 quarts. In a wet sump motor over filling will mean the crank will run in the oil and create too much oil pressure I take it ? But in a dry sump most of the oil is kept in the frame and only so much oil goes to the motor so it's not as crucial ? I see most guys put two quarts in anyway. I have a long trip coming up and I have noticed the DRZ use 200 cc or so if you stay above 70 mph.

Nah, 2 liters on an oil and iliter change is a slight over fill, not to worry. A wet sump it could be a issue. I do the 2 liter change myself.

I wouldn't worry about a slight overfill at all. But yes you can overfill a dry sump system. My SM was delivered to me 2 qts overfilled!! I suspect they checked the oil level without running it first. Not sure if damage would have resulted.

In most cases, if grossly overfilled, a lot will blow out the breather. On a S/SM, it will go intot the airboot, potentially fouling a plug. I doubt damage would result, although 2 quarts overfill is serious! An E will puke it on the ground. If you do find it is grossly overfilled, drain and refill. A cheater method of it were over filled would be to remove the little hose attached to the frame near the fill cap. Attach a second peice of hose to the nipple and into a receptacle. Start the bike and the excess will be pumped down the hose. Once it stops flowing, reassemble the hoses on the bike and you will be ok.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now

  • Similar Content

    • By 148am
      Make an offer, you pay USPS shipping. I want these out of my garage. Used, no damage.
      CST Suspension fork springs to fit 49mm stanchions in '03+ Suzuki DRZ400S, some KTM models, maybe others.
      503 mm length, 33.0 mm ID, 43.3 mm OD, 0.43 spring rate.
       
    • By Markl5557
      Anyone’s air box smell like gas ? Is this normal ? Air filter is bone dry but it reeks in there .... I’m assuming cause of the carb being semi filled with gas ??
    • By Markl5557
      So I’m reading these horror stories of the stock vacume operated petcocks failing and letting gas into the oil .... how many of you guys switched over and is it worth it to switch to manual ?
    • By Markl5557
      Hey guys . I feel like I post here way to much lol 
       
      anyway after having my bike kn it’s side overnight to fix a cracked stator cover .... I come to find out that I also accidentally left the pet cock in the prime position .... constant gas flow to carb ... now my oil smells strongly of gas ... my question is ... was it the bike being on its side that made the gas get into the oil or the prime position on petcock that made this happen ? Or both ? I didn’t ride it much at all after discovering... I assume. I should drain the oil obviously but any other suggestions ? Always appreciated -mark 
    • By Praneeth143
      Hello guys , I have a suzuki drz400sm which is a 2009 model recently I purchased a rear sprocket which was a JT 41T , but I found that it did not fit to the rear sprocket hub of the bike and my drz has got the EXCEL TAKASAGO rims in it . How can I find one that fits and what sprocket brands and where can I buy it . I have attached pics of the current setup , please help me