My first Duke (and my 1st post)

[DewCatTea-Bob]

" I will never use the Monza cam or the 'special' Race cam "

____ I thought you were at-least content with your Duke's performance when you had your special-cam in it !? _ Why do you no-longer want it installed ?
__ That cam ought to work pretty-well in somebody's 450-Duke.
____ Monza-cams usually sell for only 30 to 50 bucks on eBay.
There ought to be someone who wishes to have one for running with milder valve-timing. _ But while the Monza-cam was Ducati's mildest, it's not really a very-mild cam.



Dukaddy-DUKEs,
-Bob

[kaysystems]

" I will never use the Monza cam or the 'special' Race cam "

____ I thought you were at-least content with your Duke's performance when you had your special-cam in it !? _ Why do you no-longer want it installed ?
__ That cam ought to work pretty-well in somebody's 450-Duke.
____ Monza-cams usually sell for only 30 to 50 bucks on eBay.
There ought to be someone who wishes to have one for running with milder valve-timing. _ But while the Monza-cam was Ducati's mildest, it's not really a very-mild cam.



Dukaddy-DUKEs,
-Bob

Questions - Questions.

Yes I was quite happy with the race cam, but It was with the Monza head. I don't think the springs were strong enough, and I'm sure there was valve float at higher rpm.

I'll probably give all the cams a try after the rebuild, and then decide what to do.

Still have a lot of work to do before that happens

David

[DewCatTea-Bob]

" I don't think the springs were strong enough, and I'm sure there was valve float at higher rpm. "

____ The small-valve heads do indeed employ weaker springs for the lighter exhaust-valve, and that's not too-good since it's that valve which could get into trouble if it's not kept under control with that which the cam is intending, (however the intake-valve can float away from the cam without causing sudden troubles, [and then possibly also actually improve high-RPM power-output, with a non-racing cam] ).


Dukaddy-DUKEs,
-Bob

[kaysystems]

" I don't think the springs were strong enough, and I'm sure there was valve float at higher rpm. "

____ The small-valve heads do indeed employ weaker springs for the lighter exhaust-valve, and that's not too-good since it's that valve which could get into trouble if it's not kept under control with that which the cam is intending, (however the intake-valve can float away from the cam without causing sudden troubles, [and then possibly also actually improve high-RPM power-output, with a non-racing cam] ).


Dukaddy-DUKEs,
-Bob

And it was noticeable. I don't remember if I ever ran the race cam with big valves.

But before I get there I need to fix the problem in the attached photo

The plug is protruding by a thread or so. Somebody was using a longer plug and adapter screwed into the head.
There is now a 'Big-Sert' thread repair as the adapter didn't seem to seal or stay in very well.

So I either buy a shorter plug - NGK have them, or I use an indexing washer

David