anyone put a 110 motor in an ATC 70?

[greenhuman]

The oil gets to the top end via a channel under the clutch cover. I block the original oil hole that feeds up the stud and I carefully drill in towards the centre around half way along the channel and then down from the new cylinder face area to meet the first side hole. It all works like original. The stroke does not have to be changed. The engine goes back together as normal except for cam chain tensioning. I have a series of positions for the tensioner slide to be moved to as the chain stretches. I have a couple of these engines with stroker cranks etc. There is a lot of setup and machining time involved, but it is well worth it.

[kilabeez0]

soooo the crank spins as usual but rather than having the rod facing upward, you just face it sideways and it all works the same??? and i'm assuming u just made a simple block off plate? got some more pics?

[stonehedge]

Not to burst anyones bubble, but one thing was left out, actually a BIG thing, the frame was made longer! Thats a pretty big modification if your talking mods! The 125m and the 90 doesnt need any frame mods. And if you throw a 88 piston and a stoker crank 110 or more is easy(except the pull start aspect)

[greenhuman]

Of all the mods needed for the project X engine, you picked out the easiest mod of all. It takes about 15 minutes to extend a 70 frame a couple of inches. Plus the 110 front mount helps hold the whole package together by using the engine as a frame brace.

[atcpunk107]

Hey I have got a very important question, how did you work the carb so it will work on the 70? i mean in the pic it is obvious it isnt the same, and even if it was the same it really wouldt work anyways because the gas would be consantl running into the motor and flooding it out with no control, also how does it handle in the woulds, i know it would make an awesome flat tracker, but all that power in the woods, also someone mentioned putting either a 90 or 110 in a 70 and making it manual clustch, i also wanna know how that works, i dont doubt any of the above mentioned but iwould just like to know.

Eric,

[greenhuman]

The carb is off a CR80 which is the same size as the 82 250r and the manifold is a purpose built stainless steel unit. When you turn the 200x head on to its side it works the same as a dirty big 70 or 110 head. Inlet port facing up and exhaust port facing down, so why wouldn't it work? Fuel can't pour into the port because the carb is still sitting level like it would on a std bike or trike.
The power to weight this thing makes is unbelievable. It works in dirt or sand. There is nothing better than seeing the faces of riders on 250r's, air and watercooled and the Raptor riders that i flogged in the sand drags last Easter. All this with standard 70 tires as well. They can't believe what happened to them, not even while its happening. The Raptors were only piped but I am on a 70 after all.

[stonehedge]

Well if you have a welder and know how to weld, o.k. 15 minutes? Fast welder. What about the brake cable? What about the throttle cable? What about the shut off wire loom? Not to mention that you have extended the entire frame and the tank is shoved back changing the whole 70 apperance. With a 125m you only need to drill one hole! Not that I don't think your work is great and pretty dam cool, but most folks looking to mod a 70 dont put frame ext.'s on the top of there list, nor as an easy 15 minute mod.

[stonehedge]

I also left out the many hours in engine mods you needed to complete. Like I said nice work, but not easy by anyones standards. Also many other issues I'm sure you ran into along the way.

[stonehedge]

And beating raptors on a air cooled 4 stroke 200 is very impressive! Not to mention stock tires on your 200x/70, very impressive. What kind of gearing were you running beating all these raptors and 250R's? And how long of a drag strip? Very curious? Any photos or vid's? Love to show those to all my freinds.

[kilabeez0]

^^i dont think he believes you

[greenhuman]

I think your'e right. I don't tell lies.
I am not saying the project X is an easy thing to do, just answering questions. The frame extention is one cut thru the main frame pipe, slide in 6" of thick walled tube, line everything up and MIG it up. Your'e right about it not taking 15 minutes though. It really takes closer to 10 minutes. In my opinion the 70 looks way better with the extended frame as well as handling better and a little bit more knee and wheel clearance. Brake cable? There are no brakes. Wiring loom. One wire for the kill button and one for the headlight. The sand drag strip is 100 yards long. 15/42 gearing. I also have 70's with 110 and 125m engines. But if you want people to s**t their pants, you build a project X. There are a couple of people on here sometimes who will back me up.

[Billy Golightly]

I didn't mean to start anything when I asked about greenhumans 200X powered 70, I just remembered seeing it a long time ago and thought it was really really cool. I'm an amatuer machinest and I know the amount of hours involved in setting up and modding those cases, its alot. But nothing cool has ever been easy :-)

[petesatc]

that 200x/70 is the coolest thing ever!!!!!!!

[crnacnac]

sweet job Greenhuman. That 70 is bad trailprotrailprotrailprotrailprotrailpro. I have done a 125m conversion into a 70 complete with battery, starter and lights. You don't have to remove the front fender but it does need to be cut to fit (cut alot) This conversion is more for your home do-it-yourself-er. With a welder and some cutting/grinding tools you should be good to go. The stock 125m front mount needs to be modified and weld a tab on the 70 frame. The top motor mount bolt lines up for the 125 motor but it must be drilled out to 10mm. You need to drill a hole for the rear mount. Check in on TWW's resoration page. Billy will be posting my 70/125 conversion step by step. They should be up in a bout a month.