Engine Swap

[lazymanc]

I have:

a. bike with an engine with a broken case mounted in the frame with good covers
b. replacement engine from ebay sat in my living room sans covers, generator and starter clutch
c. 2x cover gaskets

I want to swap the engines over, is it just a case of:

1. detaching everything connected to the original engine, undoing the mountings (with it supported from underneath), then dropping it out.
2. mounting the new engine, reattaching everything
3. switching over the covers, generator and starter clutch
4. filling with oil and coolant

Or do I need to worry about checking compression, timings, etc? Should I just take it to a professional?

[lazymanc]

PS - plan is to do it this weekend if everything looks easy enough, any helping hands gratefully accepted and rewarded with copious amounts of bacon / egg / sausage / tea - preferably someone who knows what the hell they're doing as quite frankly I'm winging it.

Simesb, you free mate?

If the other engine is good, change the covers and it should be fine. If something's wrong you'll know when you fire her up.

[lazymanc]

Originally Posted by Jamiebridges123

If the other engine is good, change the covers and it should be fine. If something's wrong you'll know when you fire her up.

It was listed as fully working condition, minus generator and starter clutch, so i'll need to swap those over, is that straight forward?

Should be fairly simple.

[yorkie_chris]

Timing is fixed. Compression will be fine unless you've bought a lemon.

I'd whip the cam covers off the new un and check for swarf as that'd be obvious sign if something was utterly f##ked. Chances are it will be fine, they are tough motor

Just unbolt everything and bolt it back onto new un.

Originally Posted by yorkie_chris

Timing is fixed. Compression will be fine unless you've bought a lemon.

I'd whip the cam covers off the new un and check for swarf as that'd be obvious sign if something was utterly f##ked. Chances are it will be fine, they are tough motor

Just unbolt everything and bolt it back onto new un.

And check the cam chains and tensioners whilst your at it.

How did this go- any unforscene probs? have got to do mine this weekend!

[flymo]

For what its worth, I would whip the spark plugs out of the new engine and turn it over gently with a socket on the end of the crankshaft. If everything turns nice and smooth slap it together and fire it up.

Quick question do i need some special tools? or will a hammer and socket set do