Forum

[gra]

how do you refit your engine into the frame?
do you fit engine and gearbox minus barrel and head,
fit gearbox first then engine ?

[Barry N]

Put mine back in fully assembled (complete with 5speed gearbox, barrel and head) using using a cheap 2 ton trolley jack, as advised by others on this forum. Bike on the stand, big cross bolt and 2 triangular plates on top of the gearbox removed, big pinch bolt that clamps the underside of the gearbox slackened off, both front engine plates removed. Slides in a treat on the jack (nice and controlable, providing you steady it with a hand on cylinder head). A bit of a wiggle and its in! I had to spring the tubes apart a little to slot the two triangular plates back into place above the gearbox, then bolted it all up.

[Barry N]

Forgot to mention that the clutch and primary cases were NOT fitted, and that I put the engine in from the timing side.

[apparently lucky eddie]

Also its worth running the engine at idle for a minute or two with all the mounting bolts loose so the engine and gearbox can find its own natural position in the frame/mountings, ie. where it wants to be not where you've crow barred it into. This will help with vibration problems once the mounting bolts are tightened.

[Norm]

As a test once I fitted one with the rocker boxes on as well. It went in no probs

[gra]

thanks lads, I had abit of trouble getting the footrest bar through, never had any trouble before so I put it down to the stroke I had a few years ago which left my r/side weak.

[Norm]

Don't remove the footrest bar, no need

[John R]

I have just done this following an engine strip to replace mains and big end. I put it back in the frame as soon as I could, just engine cases and crank with gearbox bolted to them. Gearbox goes first, then support the front with a car scissor jack to get the engine plates and studs lined up. Advantages to doing it this way; 1)it's as light and compact as possible, which makes for easy handling. 2) It is then held in place while you finish rebuilding it.
I had never done a complete engine strip before except on a Bantam, which is about as easy as it gets, but I found it pretty easy doing it that way.