Help needed please guys . Does anyone know which engines will fit in a 2kf frame? I maybe getting a 1vj engine after doing some research I've found that some electric start engines are wider and the chain may not align. But I am certain I have seen a 2kf for sale with a 1vj engine fitted which is the engine I'm looking to buy. Any info much appreciated

Thanks

Thumpthump has done this i believe? the chain is out by a 1/4 inch from memory & has been talked about on here before, its doable.

Don`t forget you need the electrics to go with that engine.

Mezo.

Thanks for the reply, For electrics I presume it would be the loom and cdi I need but if the chain being out is the main problem that is isn't so as i have access to a cnc router so i would be able to machine a spacer to go on the sprocket carrier to put the sprocket out further.

Also found this which pretty much tells all info on what engines fit which models: www.xt600.de

Well this is a bit confusing? my thinking was the e-start motors are wider & therefore the sprocket sticks out further? so you would need to shave it rather than space it out.

I know about the German chart but it doesn’t say that a 1VJ will fit in to a 2KF anywhere, Ingo wrote that a few years ago but its mainly what engines just slot easy in to other frames.

He says a 2KF is the same as a 43F right? and a 43F will drop in to a 34L frame easy, we know that & its written on that chart, we also know an e-start motor will fit a 34L frame as its been done by a south African guy on this forum (search engine swaps).

Its also been done by one of my members here in Australia & that`s documented with pictures, his problem was the sprocket stuck out to far & he needed to shave or loose that 1/4 inch to make the chain line up.

You would need all the electrics, loom, cdi, ignition switch, handlebar switches (starter button) coil im unsure? (single wire versus two wire) then consider the battery to power the starter? its bigger, not sure if it will fit psychically where your existing one goes now.

READ THIS we was talking about the subject just a couple of weeks ago and THIS

Nobody has bothered to document doing the conversion to a 2KF 43F so this is the best info i can give you, i don’t see why it couldnt be done though?

Mezo.

It should be the same as doing it to any of the kicker frames, (the 3tb should be the same dimensions as the 3aJ I think) ,



Some of the 2kf's had e-start I believe, if so the frame may be wider already for the 3AJ motor. Our 3tb equipped XT's look identical to the European 2kf's , so it may be that way unless they had 2 different frames for the same plastics.
Here's a shot at where the chain may hit if things aren't modified to get the chain back inward.



I moved the motor over about half the distance with spacers and rewelding the rear mount along with some shortening of the swingarm hub to allow the motor to mover over. The rest I just am ignoring and watching for wear on the sprockets.

You can also flip the primary sprocket over and put the offset of the sprocket in. If you want to run a oring chain you have to change the screws under the sprocket to flat heads and counter sink the screw heads. It may also require a spacer to move the rear sprocket out some. This should get the chain to clear the left frame and the screws behind the sprocket, and to align with the rear sprocket.THUMPTHUMP

Do you mean LIKE THIS?

Did you fit a 1VJ in your 2KF like you was talking about on ADV some time back? did you go ahead with the swap & do you have any pictures of it?

Mezo.

Reposted to right thread, anyways,

Here's why I had moved the motor over rather than flipping sprocket.


No real clearances even if the retainer bolts are c'sunk with a flathead, they'd need to be run into the bosses but still not address retainer fit at the center, plus the tretainer thickness is less than 1mm not much holding then. With a 15T sprocket and DID o-ring chain,
.

A spacer is needed to shim the sprocket out maybe 1/16", but that takes away some of the reason for even doing this. The chain also still rubbed on the frame so it wasn't very feasable in the US frame anyways(43F?). Still would be interested in if there is 2 frames in the 2kf European models if they had both kickers and e-starts.

No I did not do it yet. I went with my back up plan until I have no choice. I replaced the trans in the 86 motor because it is my mostly off road bike and I want it as light as possible. I have already bought another backup trans. What I posted was the result of my search and the responses I received from some one who did what I posted. and that was my plan. I saw your picture you posted jj and that is why it required that you use flat top screws and counter sink them into the case. Also the reason I went another way, at least until I run out of transmissions. jj is fearless and altered the frame some. I do not trust my crappy wielding enough to do that, yet. I am building the estart motor I was going to install in the 86 to put in my 90 that I use as more of an adventure bike. THUMPTHUMP

[QUOTE=Mezo;493589]Well this is a bit confusing? my thinking was the e-start motors are wider & therefore the sprocket sticks out further? so you would need to shave it rather than space it out.
QUOTE]

My thinking would be to space out the rear sprocket rather then move the front in but it seems the chain will hit the frame in doing that?

I mentioned I'm certain I had seen a 2kf with a 1vj engine in for sale well I've stumbled across it, it turns out it's 2kf with a 3AJ engine. here it is: YAMAHA XT600 ENDURO 1988 - PROJECT | eBay


I've message the guy to find out what problems he encountered fitting it I'm just waiting on a response.

If you spaced it out you would saw the frame in half with the chain. That is why jj moved the motor over and modified the frame. THUMPTHUMP