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08-07-2008, 08:40 AM
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#21 (permalink)
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2001 Ducati 748R
Join Date: Jul 2006
Location: Mexico
Posts: 18,258
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Didn't drop any bits of ring land into the crankcases did it bert?
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- 2001 748R - Ohlins suspension - Ohlins steering damper - 996 barrels and heads - Vee Two cams - Ported head by Vee Two to corse specs - Vee Two pistons - Vee Two enlarged valves - Titanium I beam conrods - Lightened crank - CF air box and tubes -60mm throttle bodies - 52mm termi system - Corse 4 post slipper clutch -
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08-07-2008, 09:20 AM
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#22 (permalink)
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RZ250-R
Join Date: Sep 2004
Location: Perth
Posts: 3,527
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Quote:
Originally Posted by Jamathi
Broken rings.
Do not forget tat this is a 1984 made machine!
Max revs who knows, but now all are getting new ones.
Top end over haul.
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so can it be saved with a rebore and oversized pistons + rings? or is it more complicated?
i read somewhere that the ports should be lightly chamfered to prevent them catching the rings, maybe this is what happened? |
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08-07-2008, 03:46 PM
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#23 (permalink)
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2 strokes, please!
Join Date: Sep 2005
Location: Where da $$ i$
Posts: 3,495
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Quote:
Originally Posted by Desmogod
Didn't drop any bits of ring land into the crankcases did it bert?
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No all went into the expansion chamber, it is now on the bench. |
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01-08-2008, 03:19 PM
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#24 (permalink)
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2 strokes, please!
Join Date: Sep 2005
Location: Where da $$ i$
Posts: 3,495
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All barrels are off and being made ready for some more riding pleasure.
Piston, rings etc are on their way!
NOS RZ500 oversize pistons are no longer available from Yammies, but Prozz does have some that do fit.
Also picked up my refurbished RG 500 crank with all the new Factory stock that I managed to get!
We're going somewhere now!
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01-08-2008, 03:21 PM
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#25 (permalink)
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RZ250-R
Join Date: Sep 2004
Location: Perth
Posts: 3,527
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Quote:
Originally Posted by Jamathi
All barrels are off and being made ready for some more riding pleasure.
Piston, rings etc are on their way!
NOS RZ500 oversize pistons are no longer available from Yammies, but Prozz does have some that do fit.
Also picked up my refurbished RG 500 crank with all the new Factory stock that I managed to get!
We're going somewhere now!
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Jamathi, re: oversize pistons and rings where do you get the specifications? ie: whne you pull it all to bits, how do you tell what you have got so you know what to order? |
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01-08-2008, 03:26 PM
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#26 (permalink)
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2 strokes, please!
Join Date: Sep 2005
Location: Where da $$ i$
Posts: 3,495
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Get the barrels bored to a specific oversize to get the marks out.
Catalogue tells you what is available and one goes from there.
A machine shop that realy knows what they are doing is a given!
Ray Easson's Engineering is certainly one of them.
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01-08-2008, 04:05 PM
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#27 (permalink)
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Join Date: Jul 2006
Posts: 615
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ray easson rebored my rz and supplied new pro x pistons and rings  |
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01-08-2008, 06:49 PM
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#28 (permalink)
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RZ250-R
Join Date: Sep 2004
Location: Perth
Posts: 3,527
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thx  |
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01-08-2008, 06:52 PM
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#29 (permalink)
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suzuki gt500 yamaha fzr 600
Join Date: Oct 2007
Location: ellenbrook
Posts: 377
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Nice to see some movement on the RZ.
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