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Author Topic: Keeping my S2R 800 going and healthy. Winter small things, again ...  (Read 25271 times)
stopintime
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S2R 800 '07


« on: July 25, 2020, 02:25:39 PM »

 laughingdp

Heads: valve seats refurbished, valves refurbished, one valve guide drilled and put in sleeve, seals replaced, cams saved, five rockers replaced

Cylinders: another 20-30,000 km of life left. New nicasil or something else....

Pistons: no cracks, all rings good, compression test good

Crank and rods: good

Gear box: output shaft replaced because of wear under the sprocket, gears a little worn
 
Cases replaced: crack by the belt drive, crack at front right motor mount

Starter 'clutch': spinning a little, replaced

Runs: ~10 degrees C hotter, 10% better mileage


Issues: not-perfect intake port & polish rom previous builder holds it back, oil leak rear right cylinder vs cases (the usual place)(plugged, but still leaks)(updates to follow)
























« Last Edit: March 20, 2022, 08:34:29 AM by stopintime » Logged

237,000 km/sixteen years - loving it
koko64
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« Reply #1 on: July 25, 2020, 04:20:11 PM »

 chug popcorn
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2015 Scrambler 800
2004 GSXR 750
koko64
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« Reply #2 on: July 28, 2020, 03:49:45 AM »

All finished? Dyno results?
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2015 Scrambler 800
2004 GSXR 750
stopintime
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S2R 800 '07


« Reply #3 on: July 28, 2020, 04:00:53 AM »

All finished? Dyno results?

What do mean? "Finished"?

Back to the ~99 "Ducati calculated" bhp.
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237,000 km/sixteen years - loving it
koko64
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« Reply #4 on: July 28, 2020, 04:33:02 AM »

 waytogo
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2015 Scrambler 800
2004 GSXR 750
Charlie98
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« Reply #5 on: July 28, 2020, 05:11:50 AM »

What year bike is that?  ~120,000 miles?  Nice!
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Dennis

2013 M796 ABS
1993 XR650L (the Torque-a-Saurus)

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stopintime
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S2R 800 '07


« Reply #6 on: July 28, 2020, 05:57:31 AM »

What year bike is that?  ~120,000 miles?  Nice!

2007

Some of it is older and some of it is newer, but very little is original.

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237,000 km/sixteen years - loving it
Duck-Stew
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« Reply #7 on: July 28, 2020, 09:12:53 AM »

I don’t know if Ducati has changed the 797 engine over to the plain beatings yet, but that could be a modification / upgrade if you care to next time...
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Charlie98
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« Reply #8 on: July 28, 2020, 10:08:01 AM »

Are cracked engine mounts common on the high mileage bikes?
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Dennis

2013 M796 ABS
1993 XR650L (the Torque-a-Saurus)

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stopintime
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S2R 800 '07


« Reply #9 on: July 28, 2020, 11:44:54 AM »

I don’t know if Ducati has changed the 797 engine over to the plain beatings yet, but that could be a modification / upgrade if you care to next time...

Plain bearings.... where?


Are cracked engine mounts common on the high mileage bikes?

Not to my knowledge, but this might be connected to a big track highsider. All engines will crack sooner or later, so old age might be the reason...

The more common crack area is behind the belt drive shaft / front of main bearing.
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237,000 km/sixteen years - loving it
Duck-Stew
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« Reply #10 on: July 28, 2020, 12:14:21 PM »

I know the plain bearing cranks started with the 821 back in like ‘15.  They’re slowly converting the engines to plain bearings.  I’m not sure if that process has trickled down to the 797 engines yet.  Which is also the same engine as the Scrambler 800...  Just wanted you to have options & maybe a more reliable engine and/or a couple more HP.
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koko64
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« Reply #11 on: July 29, 2020, 08:00:18 AM »

What do mean? "Finished"?
Repair Job completed, or Project completed? Grin
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2015 Scrambler 800
2004 GSXR 750
stopintime
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S2R 800 '07


« Reply #12 on: July 29, 2020, 12:01:56 PM »

Repair Job completed, or Project completed? Grin

Never finished.

Not even job complete when there is an oil leak.

 Dolph
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237,000 km/sixteen years - loving it
koko64
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« Reply #13 on: July 31, 2020, 04:38:54 PM »

I think it's time for an 1100Evo motor😎.
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2015 Scrambler 800
2004 GSXR 750
scaudill
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« Reply #14 on: August 01, 2020, 03:18:29 AM »

Duck-Stew
Are you saying the crank main bearings are now sleeve type (bottom end rod bearings?  Does that reduce friction?  I can see the weight savings.  I presume the insert would be a full circle not 1/2 like rod bearing inserts.
Thanks,  Sterling
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