Re: Broken rocker arms stopping flywheel?

Dirty30 Dillon /

> Dave & Bummerzz Wrote:

> -------------------------------------------------------

> thats the cam journal, your rocker arm looks fine. engine is not a boat

> anchor. worst case scenario it needs a new head, but it looks like you

> can just replace the cam journals. The cams also might be damaged under

> that. Agreed with what everyone else said, it looks dry as a bone in

> there. I would probably check the oil pump and the oil channels for

> blockage.

I think it may be worse given that motor won't spin. Seems kinda likely that timing issue/broken valve component impacted piston and popped the cam journal.

But I will agree, you can replace the top end fairly easily.

Re: Broken rocker arms stopping flywheel?

Looks like a QMB 139. Parts are cheap as dirt, or a whole new engine will run you like $400.

If you like fixing stuff and have tools, I just rebuilt one of these with no experience and they're pretty simple.

I'd probably just buy an engine.

Re: Broken rocker arms stopping flywheel?

> Dirty30 Dillon Wrote:

> -------------------------------------------------------

> > Dave & Bummerzz Wrote:

>

> > -------------------------------------------------------

>

> > thats the cam journal, your rocker arm looks fine. engine is not a

> boat

>

> > anchor. worst case scenario it needs a new head, but it looks like you

>

> > can just replace the cam journals. The cams also might be damaged

> under

>

> > that. Agreed with what everyone else said, it looks dry as a bone in

>

> > there. I would probably check the oil pump and the oil channels for

>

> > blockage.

>

> I think it may be worse given that motor won't spin. Seems kinda likely

> that timing issue/broken valve component impacted piston and popped the

> cam journal.

>

maybe, but the valve is still in place. I would bet that the cams and the cam chain just can't turn freely cause the journal is all donked. easy way to find out, take the cams out and see if the crank will spin (edited)

Re: Broken rocker arms stopping flywheel?

Also, figure out where the oil went in the first place or you will just have a repeat performance.

Re: Broken rocker arms stopping flywheel?

Ya the reason I say replace the whole engine is 1 you still can (not like the old engines we work on).

2 is who knows what all that thing needs. Something in the bottom end failed, tensioner, bearings, oil pump Or everything. That cam chain is fursher stretched to tha max after breaking that. after replacing all those things and buying the tools it takes to dissemble the engine and hope that it dose not do the same thing again is not worth it to me. Rather just buy a new one and keep up on the Maintenance and spend my time doing some riding instead of wrenching on it.

Ken email me and we can talk Big boy vintage 2ts and trade pics ;) I know you had some cool ones!

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