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Good luck Mike!

I also decided to relocate fuel tip as suggested further down pipe. Attached are some pics of the original schematic of the ek4. If anybody needs any close-ups, let me know. Unfortunately there are no part numbers associated with the schematic.

Thank you all for comments and data. My clutch broke also and I'm wondering if it is because of that locking differential. I was testing and tuning and the front wheel locked up and noticed that pin stuck into the wheel cup. What a horrible design. Is there a different drive shaft I should be...

Antennae comes straight out of the box, right alongside the motor. That is an FM Futaba radio. Is that a 96 millimeter dog bone that I bent at the front tranny? Need to find correct part. Fail safe too.... Is that front skid plate supposed to be bent? It looks too perfect not to be. I just...

EK4 NO more. JK. I have to laugh even though I am super pissed. I have an RC dyno in which you can bench test and tune your engine. Not sure they are even made anymore. I ran 4 tanks of fuel through tuning engine. Radio worked perfect and voltage was fine. I take it to a grass field. The radio...

Thank you. I did get it running. once broken in. what settings on carb do you have? Obviously altitude and humidity is a factor. How many turns is your, high, mid, and low screws out out? They sold me an LC4 Long reach plug and a Mccoy MC-59 hot plug, he stated the shorter hot plug would be...

I see, I just noticed they both say B6 but different configuration. Thanks.

You mean this one.... http://www.ebay.com/itm/like/171716921603?lpid=82&chn=ps&ul_noapp=true Thanks, I saw that one as well. Good price. Those Li-ion 18650's are cheap and have great power. I temp hooked two up to the EK4 and tested the steering. It really came to life. I'll use them on my...

Will this charger work to charge 2 18650 3.7v 3000 mah Li-ion batteries, if the proper connections were made with the correct connector? That will create a nice light weight powerful 7.4v battery. I noticed the 6 v battery seems to struggle to turn those big tires...

No worries. I would rather be on the safe side and prevent a problem, then just throw caution to the wind and not due any research. Thank you for your input.

Thanks for all the links NT! I cleaned it up and it's rotating fine. Just as piston gets almost to the very top, I can feel a slight snag with motor back together. Maybe it's normal and just the ring as piston changes direction...not sure, but it all looks brand new regarding piston and sleeve...

Called redcat and they confirmed it should be 5mm from top of head. He said something probably caused rod to stretch when it locked. In that case, where can I get parts? They would not be able to repinch at this point if rod is stretched would they? I have been removed from RC so long, it's like...

I thought it looked too high as well. Maybe something happened when the piston locked. I see no damage but with head on, when rotating motor, it feels like it could be just barely touching something. I'll take it to the experts in town that sell RC and ask their opinion. Thanks for input.

So after tearing the motor down because I just had to know if the motor was OK, I do have the revised clutch like yours. Not sure why my motor was stuck...bearing looked all gunked up. I baked it at 300 and got the piston up to 250. It came loose. I cleaned it up and used Mobil one to lube...

I will clean it up and take some pics. I must have just put the msj upgrades on rt before motor locked, as they look brand new. Probably original clutch it has been so long, but has MSJ flywheel, head, rear diff, and starter housing on rear of motor. At the time I bought the EK4, shop...

Congrats Nitrotrout on your rebuild. Just awesome. I have an original EK4 bought new with many MSJ upgrades(including that big purple head you spoke of) I dont think it has a dozen tanks run through it. I kept having issues with the clutch locking up. Last time it did, I put it on the shelf and...