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Discussion Starter #1 (Edited)
Whats the Difference between a 2002 and a 2003 F4S

Hi,

I may be in the market for another Agusta F4S.

I wanted to know what the difference is between the '02 and '03 MV Agusta F4S. I know for '03 they put EVO 3 underneath the F4 on the rear cowl.

What are the improvements if any? Any changes in parts? Any changes in weight or performance?

Or point me where to find this info.

Thanks in advance.

Ted
 

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Discussion Starter #2
From what I found on the internet they are the exact same specifications. Even the HP appears the same. I don't understand why they would call one EVO 2 and the other EVO 3 if its the same. Correct me if I'm wrong.
 

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Between 2002 and 2004 F4S ?

The difference is.... 2 years !

:)

OK, I disappear.

:later:
 

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Discussion Starter #4
I meant 2002 vs. 2003? Several people told me there are huge differences. Even on this very forum the '03 EVO 3 are listed seperately.
 

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Between 2002 and 2003 ?

Just one year, of course !!

I get out !!
 

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Sorry, won't do it again. In fact, it's just because I don't know the response to your question, so, I joke. :loser:
 

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2002 and 2003 F4 changes

Hope this helps: First, additional 5 HP. They installed Mahle pistons and Mahle cylinder block, 1kg lighter crankshaft, redesigned combustion chambers and flat head exhaust valves, variable step valve springs, cooling jets for the pistions, new primary and final drive ratios and new oil filter system.
Tambernie :cool:
 

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Discussion Starter #9
Tambernie said:
Hope this helps: First, additional 5 HP. They installed Mahle pistons and Mahle cylinder block, 1kg lighter crankshaft, redesigned combustion chambers and flat head exhaust valves, variable step valve springs, cooling jets for the pistions, new primary and final drive ratios and new oil filter system.
Tambernie :cool:
Thanks for the info. So the '03 has 142HP? From what I found on the net it shows they both have 137HP. What is the correct HP for the '02 and '03?

Thanks for the info.
 

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The higher HP number is measured at the crankshaft, the lower number measured at the back wheel, the loss is obviously due to power being lossed through the transmission etc. The rear wheel number is what you can 'use'

Graham
 

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Let me re-paste the words of Andrea Goggi outlining EXACTLY the differences between the Senna, EVO2 and EVO 3.

Pay particular attention to the mention of what happened to the first "SPR", the eprom, etc


Let me first post the question that generated the response from Andrea Goggi at MV/CRC :

==============================
Here are the contents of msg 13573 from someone asking the initial question on yahoogroups:

My guess is the factory was not able to complete their work on the SPR motor for the 2002 model year and ended up just making some simple modifications to the already improved Evo2 engine. Result…the F4 Senna. More specifically, I believe MV took the redesigned Evo2 motor (which included [for all versions] new Malhe forged pistons, a Malhe cylinder block, a lighter crankshaft, a redesigned combustion chamber, different
exhaust valves and valve springs, jets for cooling the underside of
the pistons, a modified clutch hub, and a fix for the self-removing
oil filter) and made a few more changes to distinguish the Senna
from both the "vapor"-SPR and the cooking version. When the dust
settles on this issue, I think we'll find the Senna had the
following engine improvements:

1) slightly different cams (not F4S, not SPR); **FALSE

2) a different fuel injection control unit (possibly off the SPR); **FALSE

3) a different gear box; (ratios) **TRUE

4) three rear sprocket options; **TRUE

5) the SPR exhaust manifold; and **TRUE + RG3 included

6) two new e-proms unique to the Senna and matched to the Senna's cams and SPR headers (one for the stock silences and one for the included RG3 silences). **TRUE

I believe the Senna also has a different alternator and a sturdier clutch disc material to provide a stronger platform for the higher revs (13,900
rpm) allowed with the RG3 chip.
===============================



And here is Goggi's response to the questions raised:

Basically almost everything written in msg. 13573 is somewhat right, but You need to learn some history more.

In 2000 R&D was already working on the upgrade of F4 S engine, and on SPR engine; at that time they were different projects, with different engine specs.

Then, due to all the production retards caused by our financial troubles it was decided to make F4S same as the SPR of that time, calling it EV 02.

This is shortly the story of F4 EV02.

As a consequence the SPR evolution project began again starting from EV02. Differences between first series of engine and EV02 are quite precisely listed in msg. 13573 (pistons, valves, crancksshaft, etc. etc.), so I don't repeat them.

Senna engine is very similar to EV02 engine; differences are gearbox, clutch disks, Eprom (basically rev limiter from 13300 to 13900), and a special care in selecting production heads (better porting casting) in order to obtain a more restricted production tolerance in engine performance.

SPR engine (which is finally going in production right now for the first time), as a result of a further developement step, has many parts new and different than EV02, i.e. increased compression ratio, both in-ex ports, combustion chamber, 100% hand polished inlet ports, cam profiles, tappets, springs, pistons, trumpets, other than same clutch and close ratio gearbox as Senna.

F4 EV03 engine is same as EV02, only with painted pick-up, clutch and sproket covers (same color as Brutale).

I'm sorry to hear about troubles in getting the right informations, but in this moment of re-start of all our activities communication is for sure suffering; It will get better because as we always did we are working hard to make it happen.

Anyway the informations about differences between basic engine and EV02/Senna have been communicated to press in a precise way, so it is strange that so many doubts still exist.

I hope everything is more clear now.

Ciao - AG
=============================




EVO 3 talking point from the engine designer:
"F4 EV03 engine is same as EV02, only with painted pick-up, clutch and sproket covers (same color as Brutale)."

Senna talking points:
"Senna engine is very similar to EV02 engine; differences are gearbox, clutch disks, Eprom (basically rev limiter from 13300 to 13900), and a special care in selecting production heads (better porting casting) in order to obtain a more restricted production tolerance in engine performance."
 

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Discussion Starter #12
Hmmmm..maybe there is no reason for me to want a EVO 3 now. I thought there were differences, I guess not. Thanks for the very informative post.
 

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There are very subtle changes depending on the other model you look at:

-Some EVO2 have the SP headers, some do not. ALL EVO3 comes with SP.
-EVO3 has silver wheels, darker frame plates, swing arm and frame
-EVO3 has slightly relocated rear brake reservoir
 
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