I put this engine on my ofna ultra mbx comp. and it runs it pretty well. of course i did lightly modified it by taking the head shim out and putting a hpi .25 cooling head on it. also running 10% nitro, 18% oil.

Why, i run mine 30% and it been running strong for 2 years. Its been 6 gallons since

any ideas on removing the screws under the pull start, if they are really weak, and most likely get rounded?

do you know the 4 screws that screw the heat sink to the engine? Well one of the holes that the screws scre into on top of the engine has its threads stripped. This means I loose a lot of ompression and smoke is coming out of the gap between the cooling head and heat sink. I am planning on getting a whole new engine. Or is there another way to fix this?

There pull starters are way to big to fit onto my RS4 any advice or tips.

what is the part number for the lower engine mount screws?

how did you get loose the part where the air filter sits?? working on a project with an old buggy and cant seem to remove the pin that holds it.

got it done thanks!

which way does the hole in the piston goes

Thanks man

what pecent fuel do you run for this engine i just got one

Is it still a good engine?

I could do that, but where do you live, I live in Yorshire in the U.K.

is ir hard to put it back together?

i have an o.s dtx18, i wanna know if the piston hole goes to the same side (facing carburator) if i change de side the hole will be to the exhaust side thanks

Hi. Do you remember dimensions of ball bearings? My engine has a leakage at the bearing and I want to order better bearings but I broke my caliper :/

Maby you mentioned this in your video and I missed it but there what looks like an exhaust scavenging port that doesn't actually go anywhere. What is the purpose of this port?

Mine is going strong just screwed my cylinder head up literally I crossthreaded the glow plug

drill the bolts heads off , and unscrew with pliers

16%

Send me the engine i can use it for spare parts?!

@YOYOMAN786 hole facing carburator

no, it's very easy :)

Send it to ill pm you

the video image is too poor, you need to fix it more

amigos, en este video no es la forma correcta de desarmar un motor, las llaves no son adecuadas, los tornillos tienen que ser en orden por el balance que produce la precion , el piston no se extrae de la manera que lo realiza. gracias por querer mostrarnos su tecnica pero no es asi. viva el rc

boring zzzzzz