— Ducati 851 SP3

8 Май 2015 | Author: | Комментарии к записи — Ducati 851 SP3 отключены
Ducati 851 SP 3

In my opinion, one of the prettiest bikes has ever built (even if it has got wheels ). The 851 and 888 SP series bikes are lots of fun to ride, with revving engines begging for a

There is a bit of a story to this one is worth telling.

This bike came in for a major and a running on one problem with one loose and one broken cam belt. No on the owner, he had just been some not so correct advice unfortunately cost him a bit of money. the service, he claimed the bike did not anywhere near the grunt it had

Believing we had done the job correctly, I only guess the difference from the new, correctly belts. On all Ducatis, loose cam advance the cam timing in a static and, it would appear, the engine is running. Which them go better. I explained the belts would have lost their tension him noticing a performance change, and now it was to how it would have been

He then requested that I the belts off to the tension they before the service. This is NOT an option. I suggested that to its previous performance, he should get the dialed in.

At this point it was becoming we had a very good ( and very liked ) customer going so I told him to leave the bike me and I would see what I could do. previously checked the cam timing the service, I knew we had enough keys in stock to get the cams where I wanted them. On a Saturday morning ( it’s what you can get done when no one you ), I used the required keys to the cams.

Doing this me why we don’t use offset keys on all our cam jobs. They can be inaccurate, and very annoying.

But I digress ( it’s a habit ).

I asked the owner back to the bike ( without telling him I had done ) and tell me what he His verdict was most positive. My suggestion was a revised eprom. The ECU in the early fuel injected is known as a P7. The great drawback of is that you cannot make and changes to the mapping.

Any change you is lost every time the is turned off. It is possible to in an additional circuit board allows infinite changes to any of the map, but this was about the cost of a custom eprom.

In addition to this, the P7 won’t to resetting the TPS base value as it resets its zero value time the throttle is closed. the throttle bodies lack meaning all the usual tricks to the bottom end have as much as a withering stare and a little language.

Ducati 851 SP 3

The main reason for the new was that the bike was particularly to get off the line, and generally unhappy around. I figured I could it both easier to ride and go at full throttle. So I rode with the FIM hand held race-taped to the fuel tank and out what I wanted.

With this info, burnt a custom chip and we in business.

The power curves of the states are shown below. The service, std state of tune is green. The cam dialed curve is The extremely minor differences these two curves ( except 6,500 and 7,500 RPM ) make it to believe that I had actually a difference.

To the guy who owned and rode the however, the difference was night and A good example of what the doesn’t show.

The red curve is some more fuel The improvements you see with this were not overly noticeable to the Sometimes it’s like

(dyno graph courtesy of (03) 9553 0018)

At point he was happy again. made me very, very

Ducati 851 SP 3
Ducati 851 SP 3
Ducati 851 SP 3
Ducati 851 SP 3

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