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Author Topic: 1123cc Big Bore Piston Kit for 1000DS  (Read 23833 times)
junior varsity
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« Reply #15 on: November 02, 2009, 12:27:20 PM »

Call, Lorin is who did the work on kopfjager's bike.
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caperix
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« Reply #16 on: November 02, 2009, 01:22:31 PM »

Perhaps they combine the 1123 pistons with the new 100mm cylinders that are also listed on their site.  This is purely speculation.  I haven't looked into this yet.
http://www.ducshop.com/product_view.php?cat=6&pid=280



Thats a water cooled cylinder so I would not think they would use that.  There is a nemesis map for 1200cc 2 valve ds motors, so some one is getting some more displacement out of them.
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Duck-Stew
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« Reply #17 on: November 02, 2009, 01:43:27 PM »

There's a NCR 1200cc kit but it requires boring the cases to receive the new barrels.
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« Reply #18 on: November 02, 2009, 02:09:29 PM »

One guy over at http://www.ducati.ms/forums/showthread.php?t=73437 has built a 1123cc SC.
It has steel sleeves.
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OT
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« Reply #19 on: November 02, 2009, 05:49:55 PM »

There's more than 100hp to be had out of a built DS motor that's for sure.

Stew - is this based on what MBP has done with 900 heads, or something else?  Brad Black noted that the DS heads are 'superior' wrt flow, etc...which I think makes the biggest difference between the 900 and the 1000.  Is the DS head that amenable to flow improvements, plus hi-comp pistons and the DP racing cams?

Also, I would think the biggest deterrent to increasing compression ratio (on a street bike) is being pushed into higher-octane gas...
« Last Edit: November 02, 2009, 05:51:28 PM by OT » Logged
Duck-Stew
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« Reply #20 on: November 02, 2009, 06:21:51 PM »

Compression (with regard to the dome of the piston and the size of the chamber) is tempered by the more agressive camshafts.  

Compression starts happening (OK...it's a little more complicated than this, but here's a overview) when the intake valve closes.  More aggressive camshafts hold the intake valve open longer so the piston has travelled up the bore a good bit before the valve closes and since compression is a ratio, that ratio starts when the valve closes the 'hotter' pistons are needed to keep a dynamic compression that's more useable.

12:1 pistons don't mean that the final dynamic (or running compression) ratio is actually 12:1 but may be as low as 9.5:1  with an agressive camshaft.  But your comment with regard to compression and octane is relevant and correct.  Also, more dynamic compression = more heat so the oil cooler would need to be upgraded as well.

The 100+HP quote I made is based not off of what MBP has done w/built 900 motors (966cc's BTW) but rather from what's posted and written about on the Ducati-Kaemna website and what I've seen when looking at a DS head and a 900 head.  The 900 head is just piss-poor with regard to flow as compared to a DEAD-STOCK DS1000 head nevermind the porting and larger valves.

Personally, I have a project in my shop ('07 S2R1000) that's going 1078cc w/the DP HM cams, head porting/polishing, and oversized valves too.  I fully expect 100+hp out of this motor when all the tuning and such is done.
« Last Edit: November 02, 2009, 06:25:22 PM by Duck-Stew » Logged

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« Reply #21 on: November 03, 2009, 01:40:03 PM »

You can go 1200cc big bore kit from NCR (1194 actually). Comes with new cylinders.



You'll need some rods (how about ti) that can take the power though.



And best to go with a billet crank of F1 quality (stroked to attain the displacement).



Then there's cams, ti valves, head work, Nemesis ECU with custom tune, etc...
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Anthony Creek
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« Reply #22 on: November 03, 2009, 02:30:04 PM »

All for the low, low price of $11tyB!  laughingdp

That's gorgeous hardware there, that would be a really fun motor.  chug
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« Reply #23 on: November 03, 2009, 02:49:17 PM »

Makes a person want to say something like... "GOOD GOOGELY MOOGELY"

That crank goes for something like 4k alone.
« Last Edit: November 03, 2009, 02:52:58 PM by ato memphis » Logged

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« Reply #24 on: November 04, 2009, 10:27:51 AM »

Makes a person want to say something like... "GOOD GOOGELY MOOGELY"

That crank goes for something like 4k alone.

I would chuck babies into traffic all day long to put that on my bike.
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« Reply #25 on: December 30, 2009, 10:11:46 AM »

The process has begun.  My bike is at the shop and pistons are on their way.  I'm going with the 1123 kit with Pistal pistons.  There will be dyno testing & tuning before and after so we can see the results. 
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junior varsity
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« Reply #26 on: December 30, 2009, 11:45:13 AM »

Which shop? This sounds awesome.
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Travman
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« Reply #27 on: December 30, 2009, 12:40:11 PM »

DucPond in Winchester, VA. 
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Travman
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« Reply #28 on: January 09, 2010, 04:28:16 PM »

My bike is in the shop with the heads and cylinders pulled off.  Cylinders have been sent for boring & replating.  My clutch basket was beat up, so I'll need a new one.  Here is what the bike looks like now.  They dyno tested it before taking it apart.  They said it had a high of 86hp.



« Last Edit: January 09, 2010, 04:36:49 PM by Travman » Logged
jwoconnor
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« Reply #29 on: January 09, 2010, 05:41:43 PM »

 popcorn
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