Since there were several threads poking around about the Toki 18 fan unit and the planes for it, namely the Pilot DJ3, the Hotbodies A7 Corsair, and the Kyosho Sabre, I thought maybe one thread to compile all the useful info in one place...

Soooo...

I went down to America's Robbery/Hobby Center today, and that discerning gentleman of great manners and taste, Marshall Winston, showed me all the various buggy engines.
There are two basic sizes of car engines, and the big block 21 sized engines will NOT fit. Too much of the engine mount on the fan unit would need to be hacked away. No dice.
So, I selected the most serious-looking 15 car engine that there was, the Fantom 15. This thing actually comes in a CAN, so it's got to be good. Reputedly will do 41,000 RPM. No typo. The car geeks there took a look at the stock Toki/HPI 18 and immediately recognized it as a mediocre car engine, good for 24K, tops.
The catch with this Fantom is it is side exhaust. I got a 180' header that I plan on cutting down, but when I fitted it all together, I realized I will have to get a second one with a 90' bend, and cut off just the elbow and work it all together with couplers to end up with the pipe going straight back where I want it to be.
The Fantom fit right on the mount, no problem, as all of the 12-15 class engines share the same mounting specs.
It comes with an enormous gold-anodized heat sink head, looks like Marge Simpson's hair. I hacksawed off half the head, then squared off the sides of what remained to get it to fit.
The fantom's carb, like most buggy carbs, has a needle valve coming out at a 45' angle, so I swapped out the carb for the one that came with the 18. They look to have the same barrel diameter, though the Fantom carb is 2-needle. Doubt if it is going to cost me much, if any, revs.

So far, so good. Engine fits, just need to work out the header configuration. In THEORY, we will have the toki fan spinning up to 40,000 revs.

This little black and gold monster set me back $200 with the header. Should have it all together soon and fitted into an airplane.