No sir. I haven't.

Just arrive. We just got it in 2 days ago. Will feedback on it's performance.

The Engine

The new engine runs cooler. Better runtimes. I ran it in the our Nationals.......last week....first big test.....freaking fast compare to it's previous. Ran a 25 mins semifinal....Pit 8.30 mins...twice....each refill fuel had about 40 cc left......Fuel gun: Losi..........6 mm venturi..........good size track............

DT

Hey guys. Sorry if this seems like a silly question, or if its been asked a million times before.
I have an Os vz-b v-spec that I wanted to rebuild with the arrow parts, as I'd read this is possible.
My question is, can I use the new 5 port sleeve or do I have to use the 3 port version? And also does the crankshaft fit in as well?
My intention is to rebuild the Os as well as get a whole new arrow and have two great engines
Cheers
Dave

Yes both will fit. the 5 port (3+2) will make it more like a Ninja JX-21, the 3 port will be the same as the VZB.

Thanks man. Do you know if the crankshaft fits as well? A dlc crank seems like a good idea

I should also add, these will be getting used in an rc8t truggy, so in your opinion which would be better suited to my fat heavy truggy?

yes all the parts are interchangeable.

What pipe are using with the new 5 port engine?

hi i have the new arrow gtr and it is still getting broken in and i have noticed that when i put the flywheel on the bearings are very grindy i'm thinking its the rear bearing.

any help would be much appreciated.

i think you may need to shim the flywheel out from the casing

i have tried that and it was worse

send it back

i am curious as to how you noticed this because when the engine is new it is very tight and difficult to turn over by hand. i would think it would be hard to feel the bearings when the engine is so tight??

ok. so yesterday i was running the engine and it was coughing and spluttering in the mid-range but was clear at the bottom and top. had a good puff of smoke but not too excessive. even on the base settings suggested by gene and danny it would so this. if i drive it it is ok. it cleans out and i can drive it no problem, but if my kids drive it they get and 30 seconds and it stops. they are learning so going slow and it kind of stays in the mid-range.

i tried leaning the man half a turn and a full turn but it still stopped. anyone else experienced this or have suggestions for a solution? i also changed from a p3 to a p4 and it was the same so i went back to the p3. on the box it is fine but when you put load on it, it is like it is super rich!

cheers
jason

just found this and this is my carb!!! i have an OS crab, i will try that!. my carb slide also has all the coating peeling off it too!!!

after 1.5lts of fuel i was turning it by hand to get the piston bottom and as i was turning it. It felt grindy so i took it to a mate who has the same engine and even he said it dont feel right so i took the piston and sleeve out and just left the bearings and crankshaft in with the flywheel on and turned it over and found out that it is the rear bearing

I would replace the bearings. A piece of metal may have gotten in the bearings during break in.