TOPIC:

Kano Nordi wrote:

What I have noticed is that the std timing marks are very slightly advanced when at tdc with the belt correctly tensioned, not up to 1 tooth out, maybe 1 degree...

That's normal (Luigi style)
Last year i had a Nordie here which don't start. Everything seems to be ok, but the marks on the crank where nearly half a tooth different. Ok wrong mounted belt. No
After a lang time of searching it turned out to be a plug problem and a faulty wire.
But that didn't help *you*
Maybe it would help to send your problem to the Gileraclub forum.
There are a lot of people there who are reacing with heavy tuned Gileras

ciao Joachim

Hi Joachim,
I'm pretty sure this is a standard unmodified engine, I have not had chance to check valve clearance yet, hopefully tomorrow, I'm hopping to find the clearances tight, which allows me to increase them and possibly reduce the valve lift a little that's the 1st time ever I have not wanted to increase valve lift:blush: I've always been a believer in more is better for almost everything in engines - capacity, compression, valve lift/overlap, revs, torque, Kw, you name it more is better. Oh and more money to pay for the development
And have built quite a few engines with lots more of everything
Regards
John

some kind of misunderstanding
What i want to say is, there must be something wrong.
And there are people out there who know this engine very well. Therefore.
Maybe ist's worth to have a look at the camshaft wheels. As Pete said there is sometimes troubble at this place.
They have a steel insert which is comming loose. Maybe.
I don't think that there is so little space between the piston and the valves. There *is* something wrong

ciao joachim

Well I checked valve clearance, exhaust OK, inlets a little loose, so removed cam pulleys, now they were loose the fixing bolt was tight and no sign of fretting between the cam and pulley inside diameters, or the keys and keyways.
Both cams have a journal diameter of 19.97mm and the internal diameter of the pulleys is 20.01.
So a 0.04 clearance - very sloppy many cam pulleys on other engines I have removed have needed a puller to get them off
Other than new sleeves in the pulleys, or locktite adhesive any other known cures??
Regards
John