Best way to get the motor back in the frame.

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Old Bloke

Old Bloke

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Feb 14, 2013
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I know theres a few threads on the forums on the subject, but some points aren't clear to me.

At last, I'm ready to put the motor back into the Frame, and was looking for sound advice. I've a bad back, so I will not manage to lift the motor, even with help, into the frame, in fact there will be only my son(who is only 15) and I. For those reasons I had planned to do what had been suggested elsewhere, and lift the frame onto the motor whilst the motor is on it's side. As always details get sketchy. I assume I will be laying the motor down on it's timing side, somewhat elevated, then manoeuvering the frame into place.

Whats the opinion on best way to do it, I have the swing arm, gearbox cradle fitted to the bike, which can pivot to and fro on the rear iso mount. I guess I could reconfigure this bit if needed to.

Can the motor be fitted in like this?
Does the gearbox have to go in first(std Mk11 so I expect so)?
Can the front Iso mount be fitted to the motor first or does that need fixing to the frame first?

P.S. I have a winch in the garage, but it's not precise, and fixed in one position in the garage only, using it to try and place the motor would end in tears. :(


Peter
 
Its been a wee while since I have done this last, but I laid the motor and gearbox (850 Mk1 73) in their cradle on its timing side, on a large bag of something I recall (garden fertilizer ?)(be sure none escapes !) and waggled the frame onto it, around the swingarm.

This was easy - the frame was quite bare at this stage of course, quite light. No carbs fitted either, no air cleaners etc, nor kickstarter or gearlever, so plenty of room to waggle. Stand it up onto something soft, and continue on your merry way.

Isos were fitted, you'd never get them in later ? Take care you don't bump them off in the installing.

This method is detailed in the workshop manual ??
The gearbox can be installed later, it can be removed/fitted from/to the cradle if you twist it around...
 
Transmission first. Attach front iso, then install engine from primary side. Upper engine cradle bolt first, then tip engine forward to install the cradle bolt that is second from the top. Lift engine up slightly to get bottom bolt in as it needs to clear the lower frame rails. Then move into place to get front iso attached. I'd pad the frame with pipe foam and maybe have some padded wedges to lever the engine around. Might have to reverse direction of some bolts once it's back upright.
 
If its a BARE Frame , hang up the Motor . And put the Frame onto the Motor . :D :wink: its a wee bit lighter .
 
You are getting sound advice but here is mine. I put the gearbox into the cradle and sat it in place without the swingarm or iso bolt so that it could be pushed toward the rear of the frame. The frame was situated on the floor next to the motor. I put down some blocking and made a bridge with a piece of plywood so that I could walk the motor sideways across my little bridge and into the frame (the main objective was to not scratch my new paint). Then I got the cradle bolted up to the motor and started getting the isolastic mounts sorted out. I had the blocking situated so that I could remove everything but a couple of blocks under the engine so that the frame was free to be moved about around the engine. Once the engine mounts were in I used a hoist to put the whole thing on its work stand. It wasn't that hard really. And it actually helped to be able to lift the frame upward toward the engine to put in the front bolt. If your blocks are too high you might hit the head, so just enough to clear the bottom frame rail is good.

Russ
 
Old Bloke said:
I know theres a few threads on the forums on the subject, but some points aren't clear to me.

At last, I'm ready to put the motor back into the Frame, and was looking for sound advice. I've a bad back, so I will not manage to lift the motor, even with help, into the frame, in fact there will be only my son(who is only 15) and I. For those reasons I had planned to do what had been suggested elsewhere, and lift the frame onto the motor whilst the motor is on it's side. As always details get sketchy. I assume I will be laying the motor down on it's timing side, somewhat elevated, then manoeuvering the frame into place.

Whats the opinion on best way to do it, I have the swing arm, gearbox cradle fitted to the bike, which can pivot to and fro on the rear iso mount. I guess I could reconfigure this bit if needed to.

Can the motor be fitted in like this?
Does the gearbox have to go in first(std Mk11 so I expect so)?
Can the front Iso mount be fitted to the motor first or does that need fixing to the frame first?

P.S. I have a winch in the garage, but it's not precise, and fixed in one position in the garage only, using it to try and place the motor would end in tears. :(


Peter
Click to expand...

I did this with me, myself and I. Don't put the front ISO on until you get the rear ISO secured first then the front ISO. Will work for removal also.
 

Attachments

Thanks for all the information, certainly a few differing ways of doing things, my frame is bare (If I drop the rear iso mount out again). When I get done I'll say how it went, but will have to wait until I get rid of stupid Flu bug now, Doh!
 
Rohan said:
Its been a wee while since I have done this last, but I laid the motor and gearbox (850 Mk1 73) in their cradle on its timing side, on a large bag of something I recall (garden fertilizer ?)(be sure none escapes !) and waggled the frame onto it, around the swingarm.

This was easy - the frame was quite bare at this stage of course, quite light. No carbs fitted either, no air cleaners etc, nor kickstarter or gearlever, so plenty of room to waggle. Stand it up onto something soft, and continue on your merry way.

Isos were fitted, you'd never get them in later ? Take care you don't bump them off in the installing.

This method is detailed in the workshop manual ??
Click to expand...

Sure I seen your method somewhere too, but couldn't see it in the workshop manual
 
Thought I might complete this thread by saying how I got my motor back in.

OK, laid motor on floor, on it's timing side, elevated 3-4 inches by various bits of wood & carpet.(Carbs, headsteady, Front ISO not fitted).
Frame was already assembled with rear iso fitted, cradle fitted, gearbox fitted, swingarm fitted.
Son and I lowered the frame assy over the Motor, then fitted the three rear cradle bolts, this was pretty easy.
Fitted front ISO. Wish I could say that was easy, but we got it done with a bit of swearing, space is tight.

So we got it done without denting or scratching the new powdercoating, but I feel some of the other ways suggested here would be easier. Just goes to show "there are many ways to skin a cat", lol

Peter
 
I don't think any of the methods come without swearing and cursing. It's not optional!
 
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