I’m in Sturgis, and we had a need for a battery charger for 2 of the bikes that friends had transported up here. Nick Trask was nearby and had one so he brought it over to our rental house. After discussing the Trask Check M8 over a few beers, he decided I needed one and had “Moots” install one for me yesterday. Moots is an employee of Trask, and is actually the person that came up with the idea and designed it.

My impressions: The engine spins up a bit faster, and the 2k RPM firing impulse I had been feeling has been all but eliminated. This impulse appeared after I had a dyno tune, and while not horrible, it rattled my fairing and bars enough at 2k RPM to make it annoying and I had thoughts about another tune to see if we could get rid of it. It also feels like it runs smoother throughout the entire RPM range. I’ll be here for a few more days, then ride back home to Vegas. If I notice anything else that I think you might like to hear about I’ll try and come back and report on it.

Another interesting tid-bit is that I had done a breather bypass quite a while ago. This makes me wonder if, as some people who are smarter on this stuff than I am, contend that the breather bypass or the Check M8 will provide the same benefit of allowing the oil tank system to breathe. They are in 2 completely different areas, so maybe both are better than one or the other? In my case, both seems better but I’m certainly not a subject matter expert.

I learned that during development of this part slight performance gains in horsepower were realized on the dyno, but Trask makes no claims about it. It’s simply marketed a product that allows the M8 engine oil tank system to breathe.

Edited to add - On 2019 (early) and earlier M8's, there is not a seal between the oil pump body and the crankcase. If you have not added this seal (done with the 8 lobe pump), Moots states that you will most might get oil pushed out of the Check M8 vent. In mid 2019 the seal and pump were added at the factory.

Meet “Moots”, the developer and super nice guy.

 

I like that they changed the hose barb to a 90 degree fitting. That brings your hose back and to the right instead of left across the transmission.
What kind of tool is he using to take the front screws out with?
Here is what the original looks like.

 

He had a small ratcheting allen wrench.

 

Damn you. I was not going to spend another dime, I tell ya!

 

Is he saying that if you didn’t change out the pump (add the seal) on a 2019 and earlier, you’re going to have oil coming out of their cover or is it the breathers?

 

Glad you had a good experience with it.

 

This sheet he gave me will explain it better than I did, sorry I didn’t make it very clear.

 

I think they will sell you the molecular twangulator (catch me if you can) 'Can' and high flutenator add ons if you are having issues

 

I'm here to help, LOL!

 

I occasionally pull the hose off of my trask just to see if any oil is in it, I’ve not seen a drop of oil in mine since I installed it in March. I pull my air filter as well and the stock breather tubes have zero oil residue in them and the throttle body is spotless. My 2019 cvo did not come with the seal but when I had a sumping issue the seal and new cam plate was put in and that corrected my sumping. I have since put the new 8 lobe with seal in when FM built my 128. Trask explained the benefits, especially in larger displacements, and it made sense to me so I am happy with my purchase.