Hi I'm new to the forum and am looking for advice and options following the engine letting go over last weekend on my 2008 hypermotard 1100s. Engine lost power following an overtake the back wheel did not lock up. It felt like hitting the rev limiter but I'm sure it did not. when I pulled over found that the cam side front plug lead had been broken and the timing belt was shredded inside. Initial strip down revealed the front belt had shredded and the rear belt was still in place. Front cam will not rotate and with the engine crank turning tool the engine with the rear belt in place will only turn about 3/4 of a rotation. front plugs look ok but the rear plugs have taken a bashing so suspect the problem started there maybe a valve broke ?. Any theories and advice welcome.
Hello , i'm sure someone will be along with some advice!! Looking at those rear plugs there has been some impact there.
Ooerr chief, complete engine strip and rebuild, deffo damage lay within horizontal cylinder, may be cheaper to source a replacement engine with the belt letting go at high rpm's.
Hi, not heard of this letting go before! Guessing its belt then the rest rather than other way round. Sounds like full rebuild or replace
Commiserations, as above, I think you know the answer without me rubbing it in. There is a thread running on an 1100 rebuild after a failure which will give you an idea, either this or source a good secondhand one. As for what happened, it's an unusual one for sure, a strip will hopefully reveal more. https://www.ducatiforum.co.uk/threads/my-engines-got-to-come-out-and-be-split.79587/
A friend had similar happen to his air cooled numpty and we wondered at the time if the plug cap had somehow been loosened and as the belts run very close to the cap if that had eventually caught up in the belt and caused the damage?
I would say he has dropped a valve. That stopped the camshaft and the belt shredded trying to spin over a locked cam which in turn has done the plug lead
unless im missing something if all the damage is at the top end of the horizontal cylinder, then assuming the piston is in one piece then nothing is going to go down into the gearbox.....having said that before any speculation is done then it would be at least worth pulling the horizontal cylinder first then putting up the carnage for more comments....
Oh dear. My engines in at the moment for a complete strip and rebuild. Like comfy says. It’s worth stripping the front cylinder to see what’s what.
Thanks for the comments guys . Just to be clear damaged plugs from the vertical rear cylinder and belt shredded on the horizontal front cylinder. Will try to remove the heads over the weekend to see the extent of the damage and post more pic's. My initial thoughts are the same as Higgy (not just because we have a similar name ) vertical rear cylinder drop a valve or something that then hit the plugs and then the horizontal front cylinder shredded it belt and broke the plug cap in half. As for a solution i'm thinking replacement engine or sell the bike as a rolling chassis and buy another one as I love these bikes.
Sorry to say this. But I’d be surprised if it hasn’t damaged anything other than valves. I had the exact dilemma. Do I buy a second hand engine. Do I run for the hills and sell as spares. Either way I would be out of pocket so decided to go the rebuild route. After all a second hand engine is gonna set u back between £1000 to £1500
Found some time to look at the bike again over the weekend and found none of my 14mm spanners fitted the head bolts with the engine in the frame. I found some specialist spanners on ebay and my question is do I need these spanners only to take the heads off while in the frame ? or once the engine is out of the frame can I get the heads off with just a 14mm ring spanner ?.
Those are for applying a torque wrench to cylinder head nuts on re-assembly, you can get access with a conventional spanner when dismantling. freeze at 1 minute 27 seconds on below video:-
