Tillotson 225RS Class Rumors

So today I heard some rumors that the Tillotson 225RS is going to start showing up at tracks in the PNW. I’m hearing PSGKA will have a class and rumor is other tracks are considering it too. From what a friend told me he sees it as a cheaper and more powerful version of a Briggs World Formula engine. I’m curious to hear thoughts here. I’m a bit frustrated as it seems like it’s going to steal entries from Briggs WF and eventually kill that class, especially if this engine proves to be less expensive. @DavinRS have you heard anything?

Would also love to hear from any of you who have run the Tillotson 225RS. I’m looking to put it on a Kosmic Mercury R chassis and would love to hear others experience with the engine.

Is anyone else seeing traction with this engine in other parts of the US or Canada?

When I hear “cheaper” all I can think is for how long? Long enough for everyone to have spent a pile of money and then the next ones comes along.

I’d be down to run a tillotson 4-stroke. It looks lighter and I think it’s a bit beefier than the lo206. Seems like a great package.

The Tillotson is just another Honda gx200 “clone”, albeit this one is a little higher displacement. They did beef up the bottom end some by adding material here and there which certainly helps. I personally am not a fan of another engine package, nor do I think it’ll gain any large popularity in the NW (or anywhere in the US) unless something awry goes on with Briggs.

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I’d agree with Ricky on this. Personally, I don’t think that 206 needs the dilution, and I don’t think it’ll replace World Formula from a class need.

But this is a typical karting trend. Something works, and someone tries to force in a new engine, and it just splits a popular class.


It’s definitely is plausible given that Marty Casey seems to be an advocate of the package and is based in PNW. Also PNW seems to have it’s own unique classes (or engine packages) that are not found in many other places such as the PRD Galaxy, X100AC and X125AC.

No doubt there are some racers looking for a bit more power than the 206, but don’t nessacarily want to go the route of other packages of World Formula or KA and would like to stay with something sealed, clear ruleset, four stroke OHV.

That’s where I see the Tillotson fitting in. That said, I find myself confused between the different Tillotson engine models in displacements, carbs etc. etc.

I’d like to think that with 206s flowing again we’ll see growth in 206 while some transition to other classes. I’m an optimist. How many drivers will really make the jump from the 206 program (To me it’s more than just an engine package, it’s a program which is why it’s seen success) remains to be seen.

We might be seeing the levee break in the Northeast. Marco is apparently running Lo as a sort of trial at events at his upstate track. I guess with his track’s proximity to Canada (and their strong Lo program), it makes sense. Tim has the ignite spec series at OVRP. It’s a start.

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I get the impression that there’s small tracks sorta alone out there that are typically the places that run the oddball packages. Like the place that runs the subarus that Dean? spoke about.

I’m guessing they made these decisions in a vacuum, ie no traveling series, just a track with a club. The package is whatever because it can be.

I am guessing dilution doesn’t even enter into their thinking, it’s just so not relevant to their scene?

Yeah, I think this is who I was seeing push the Tillotson. Remains to be seen how many tracks pick it up but Kart-O-Rama is offering the engines now and I’ve heard of a few people from the Portland area starting to test the engine. There’s a rumor that PGP may have a winter series class with this engine as well.

I’m with @DavinRS that class dilution is a bad thing.

Re: Subaru

Like I discussed before, my track was a Subaru distributor back in the day, so the 4 stroke class is all Subaru. But they stopped making that motor In Japan, and the Chinese knock off has quality concerns so they will be a dying breed. I think the only reason they haven’t switched over yet, is the crazy amount of money they all seem to have in their Subaru motors in perfromance upgrades (North of $3000 in alot of cases).

Re: Tilly

The Tilly platform is something I’m interested in, but where I’m at nobody runs them. I know there is a class of them in I think someone said Orlando? But the LO206 classes are so dominte here, that unless I lived in the shadow of a track like Orlando, with its own growing Tilly class, it’s not worth trading up because you can’t run them anywhere else. That is one of my barriers of entry that I struggle with because I had been toying with the idea of keeping my 206 but picking up a Tilly as well.

We saw some of the Tillotson engines up at the Miller race. Unfortunately they were all running on the Sprint track so we could never get a comparison with the WFs. Package looks nice but you never really know how things will go until people lean on them for a while. I know Briggs has made lots of various small improvements in the Animal/WF/LO206 package over the years, will Tillotson be willing or able to do the same? A supply line from the other side of the planet has always been a tough thing to deal with. The people working with the regular clones have been dealing with this the whole time, China makes what China wants to make. Kart engines are a pretty small part of what they sell.

I just saw that PSGKA is lumping the 225 in with World Formula this Saturday/Sunday for their club races. Will be interesting to see how that goes. I wish I was free this weekend and could go down and run but have other things I’ve got to tend to.

Personally, I’ve always thought that not aligning engine and tire packages up with what’s nationally popular, just makes it more expensive and challenging for out of state drivers to want to come to race at local tracks.

Why would I want to pay extra money for a set of tires I can only race at a track that I might visit once a year, or an engine that I’m only going to run at one track to be competitive? I wouldn’t. No one would.

But (shrugs). You just end up creating a bubble that will deflate, if people decide to go do something else, other than karting.

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Ill be there. Its only being run together due to not stretching the race day. As of now I think both the drivers are pretty inexperienced and it will be in the rain. So who knows how it will go.