Brutale 910R engine overhaul advice - MVAgusta.net
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post #1 of 10 (permalink) Old 03-09-2019, 03:45 AM Thread Starter
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Brutale 910R engine overhaul advice

Hello,

Some time ago I've posted a thread with topic 'Brutale 910R engine exploded.'
https://www.mvagusta.net/forum/20-ma...-exploded.html

Time has not been on my side, but now I took some time to drop the engine and remove the head.
Cil 2, 3 and 4 are [email protected]
Timing chain missed a tooth, because of low tension.

I assume Cilinders need to be bored and need honing (not sure if this is correct english ) + 3 new complete piston sets.
Knowing this is going to be a lot of $$ is making me wonder if it is all worth it ?


Somebody any wise words ? How much $$ will this set me back ? Are there cheaper alternatives than the OEM pistons ?
Thanks guys
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Brutale 910R 2007

Last edited by phunkinit; 03-09-2019 at 05:08 AM.
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post #2 of 10 (permalink) Old 03-09-2019, 06:46 AM
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@phunkinit: We implore folks to put their location in their profile so that local (relatively) people can provide more accurate input.

Please do this through TOOLS>USER CP> EDIT DETAILS

You can also put your bike model in your signature line so that, as this thread grows, we can readily identify the model and year.

Not knowing where you are on this big blue marble limits the information accuracy. Things are more expensive in California than they are in Cambodia.

As for yuor issue, yes, I would be doing a complete teardown and rebuild including cylinder honing. Gaskets may be your toughest part to find.

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post #3 of 10 (permalink) Old 03-09-2019, 10:06 AM Thread Starter
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@phunkinit: We implore folks to put their location in their profile so that local (relatively) people can provide more accurate input.
Done !


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You can also put your bike model in your signature line so that, as this thread grows, we can readily identify the model and year.
It's right there where it is always was...



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As for yuor issue, yes, I would be doing a complete teardown and rebuild including cylinder honing. Gaskets may be your toughest part to find.
yes, thank you

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post #4 of 10 (permalink) Old 03-09-2019, 10:16 AM
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Done !



It's right there where it is always was...


Thanks and sorry I missed that! I wish you luck in your rebuild.

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post #5 of 10 (permalink) Old 03-10-2019, 03:05 AM
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Id say buy a complete used engine for much less than the rebuild is gona cost. Lots of 910 R engines around in Europe!!

And get a manual CCT
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post #6 of 10 (permalink) Old 03-10-2019, 05:21 AM
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When I priced rebuilding my 750 with snapped cam chain it was cheaper to buy a whole new bike. I'd look at a used engine, should be plenty of 910R motors in Europe.

Cheers
Rich
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post #7 of 10 (permalink) Old 03-10-2019, 09:47 AM Thread Starter
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Id say buy a complete used engine for much less than the rebuild is gona cost. Lots of 910 R engines around in Europe!!

And get a manual CCT
Manual CCT from Tokymods in the mail few a days ago.... Learned my lesson the hard way.

Strange thing is that im having a hard time finding a 910 R engine.
1 for sale in Texas US and 1 in Italy, but engine is different because of EURO3, ....thats it for now.

The S engines are easier to find.
Does anybody know more about the differences between R and S ?

- Suspension spring charasteristics front fork
- rear shock with rebound compression high speed and spring preload (also on some S editions )
- Radial Brembo brake callipers front and back
- light weight magnesium wheels,
- Stock rear tire 190 on R v 180 on S
- some goodies like a bellypan (depending on version)
- other camshafts for more agressive throttle response
- Valve cover in red color
- in case of racing exhaust +5 hp, overall more power but ONLY in case of euro 2
- higher pricing
- Limited Editons (Wally/starfighter,...
- More colour options


What issues could arise swapping the R for an S engine ?
A smoother run ?
Mapping ECU / EEPROM compability / sensors / reduced power / ECU going bananas because of unexpected parameters / ....?
For now, I have no reason to believe that is the case.

Brutale 910R 2007

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post #8 of 10 (permalink) Old 03-11-2019, 10:11 AM Thread Starter
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As for yuor issue, yes, I would be doing a complete teardown and rebuild including cylinder honing. Gaskets may be your toughest part to find.
On a side note; honing Nikasil cylinder walls would destroy them. (plenty of reading on the www)

Deglazing would be possible, but is merely for cleaning and getting a smoother surface and not for damage like in th pics above.
Please correct me if i'm wrong, maybe somebody will use this information...

Brutale 910R 2007
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post #9 of 10 (permalink) Old 03-11-2019, 10:26 AM
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The cylinder walls are damaged. You could repair the cylinder (weld in the dents, bore to size and re-plating by a specialist), other wise you must replace. The 910S engine is a slip-in replacement. Most of the "R" upgrades are chassis.

The difference between Euro 2 and Euro 3 are mostly electrical. The second air system is the only significant mechanical change...and that could be ignored with proper ECU tuning.

Euro 2 used the 1.6M ECU....Euro 3 uses 5SM ECU, lambda sensor in exhaust, second air system, and single Engine Coolant Sensor with 2 circuits incorporated (Euro 2 used 2 separate senors).

Good luck with the repair.

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post #10 of 10 (permalink) Old 03-11-2019, 01:33 PM Thread Starter
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thank you for the input, fixing the cilinderhead costs 1200 euro's....
So it's a no brainer, i'm going for the engine swap
Found an euro2 R engine with 8K miles, with warranty and compression tested. Should arrive next week.



I did some homework, and filled in the gaps with the differences between R and S (disregarding ECU and euro/2/3)
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