What engines will fit a 2001 xt?
 

Hi, I have the chance of a spare engine for my 2001 xt600e. Can you tell me will any e-start engine be interchangable? What I'm trying to say is will any top end fit onto any bottom end if they are both e-start models and will any comlete e-start engine fit into a 2001 frame? I hope this makes sense.

Yamaha have been making electric start XT600 for about 20 years, so as you can imagine there have been a few changes. Not so much the engine itself, more things like oil-coolers, oil pipes, clutch arm/cable, wires, oil in frame or in tank ect.
The engines will swop from frame to frame (I've seen XT600e in Tenere frames) as all mounting points are pretty much the same.
Some have clutch-arm on left (3AJ), yours will have it on right side, so slightly different bottom end. Heads are pretty much the same, though early kick/electic starters had decompressor (can be removed).
I'm not sure about gearbox ratios.
Just have a good look at 'spare' engine, checking wireing conectors.
Nothing too difficult to sort out.

Don't forget that the standard air cooled XT600 engine was also used (to great effect) on a few other Yamaha models such as the SRX600 etc...

I would imagine that it's quite possible to mount the engine quite easily but as stated above it's the pipework, electrics, cable routings, and carbs etc.. that may create a problem.

Personally I 'd stick to finding a decent standard XT engine from the same model you are re-newing. It's likely to be a lot less hassle.

Good luck whatever you decide to do...

I think the SRX uses a different size engine mount bolt at the rear near the swingarm. Not seen it my self but read about it on one of the Thumper sites.

I thought all the Xts after about 88 use a 3AJ Cylinder and 2KF head but the cams may be different

Thanks for your replies. The owner of the other engine has told me it's a 3tb model. Would a 3tb and mine be closley matched?

Thanks again folks you really are a very helpful bunch.

All XT engines will 'fit' into the frame BUT the output sprocket may be an issue.(due to the off set - it's about 10mm)

If it's an electric start engine then the sprocket is in the right position - so no probs there.

I tried to convert an early XT to electric only to find the sprocket was an issue.

Ask David Lampeth - he knows the score

Best check your oringal engine no if it begins 3tb then no problem,
You want to check if your bike has CDI ignition and check what ignition the new engine has.
The engine will still fit but you will need to swap generators if one is cdi and the other is not otherwise you will have to change the wiring on the bike.
Anyone know when Yamaha stopped using the CDI on XTs

I have a TT600RE engine I got as a spare for my TTR the TTRE has electric start my TTR only Kick any one know if the sprockets will be in line?

I may put the TTRE engine in a 3AJ frame any problems with the sprockets?

Thanks

Hi Tennentj
I have the same model as you which is the 4PT but I have one of the very first 1996 models in which they introduced the new 4PT frame (doing away with the exhaust as a stressed member) but kept the 3TB engine so in answer to your question, yes a 3TB engine will fit in a 4PT frame as this was the exact configuration of the original 4PT model that you have:thumbup1: Also the engines both use TCI so no compatibility issues there.
However as previously stated there are some slight differences between the engines for example on the 3TB engine the clutch arm/cable is on the left side of the bike whereas on the later 4PT's it is on the right so you may need a clutch cable from a 3TB.

Hope this helps!

Thanks to everyone who posted. The information you've given me has been a great help.

Out of curiosity does anyone know if the crank cases on a 2001 are identical to a 3tb?

Here's a curve ball for you... do the wheels from a 3tb fit a 2001? I feel like I'm a fecking quiz master here!

Wheels will swop over, the bearings, hubs and discs are the same sizes. The swing arm hasn't changed since rear disc brakes were first fitted, so easy swop. Only difference is wheel size, earlier ones (and Teneres) had 18 inch, later 17 inch.