Wondering which would be the best bang for the buck both are 26cc race ported zenoah top ends.Planning on putting it on top of the sx254 bottom end.

Gizmo's GZ-2 likely has the more extensive mods done .... Tho no first hand experience with DDM's offerings either. Just hear little to nothing about there marine engines or mods

I have used a couple of these and thought they were great deal for price

I don't have any on hand but do have couple more kits ordered

www.davesmotors.com/s.nl/c.885...it.A/id.4130/.f

Gizmo is good deal too

I have also thought about getting the EVO cylinder and working it over myself,going off your mod thread.

Canadian Hot Rod RC Boats wrote:
Thats the 26cc setup I am refering to. Maybe you could post me pics when you get another. Sure sounds good for price. I have seen pics of the gizmo mods and it looks very nice. Do you know how many rpm's you were turning with the DDM setup

I don't recall the exact rpm they were running .. I'm a play [sport] boat guy not a racer ....... seems to me they ran as good as a couple way more expensive engines I had .

rpm to me as always been a mater of many things .... not just the engine .. props... set up ..... water conditions .... carb ... etc.

I use my GPS and tach combined with few other things [lots of video] but I'm no pro at engines at all ...... guys like Scott work on more in a year than I have seen .......

it's a combination ..... boats only as good as the whole thing

I ordered one, the DDM 260 top kit, a new crank and a piston bearing only cost me $123 with free shipping, will install it on my old cat and use a mod piston.

I ran this DDM mod cylinder kit with a mod piston on my Sprint cat last Friday, very impressive with its speed and performance, compared to GZ-2 top kit, I'd say GZ-2 mod kit has a bit more top speed on the straight and corner.

earthsurfer wrote:
I have heard that Zenoah are bringing out a 29cc marine topend and should be ready approx mid June! Also in the works is a 2mm+ stroker crank but not sure if Car or Marine or both?

Hey Doug. It's me, John (Wolfman) from Riverside, CA. Yesterday I was running my
Backlash with the TS reed cases and your ported cylinder. It was running strong for the first 3 laps. It started slowing on the 4th and shut down. I go out to it to find the water line on thr rudder came off and the motor OVERHEATED!
Ruined the cylinder and piston. It was my fault. DUMB-ASS me failed to put a zip
tie on the line. EXPENSIVE LESSON.