biggest ds bore
Dec 2, 2006 | 05:44 PM
#4
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biggest ds bore
The stock bore is 100mm. HPR offers their big bore cylinder in 105.5mm and 108mm. Pami also has a big bore cylinder in 105.5mm and 108mm. I am not sure of the size of bore the stock sleeved cylinders, but I believe I read that most are 104.7 (don't quote me on that one)
Using engine size can be misleading as you can have a 730cc engine that uses the stock 100mm cylinder (gain is from an increase in stroke.)
Using engine size can be misleading as you can have a 730cc engine that uses the stock 100mm cylinder (gain is from an increase in stroke.)
Dec 3, 2006 | 01:56 AM
#5
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biggest ds bore
Further expanding on this. . .
The stock (STOCK) Jug can be bored from a 100mm to a 102mm and re-coated with Nikasyl (sp). I've herd of people possibly going all the way to a 103.5??? on the stock jug (Cylinder) and then re-coating it.
Some have sleeved the stock jug. . . this means it is bored to where there isn't a cylinder any more, just water jackets, etc. Then a steel cylinder (sleeve) is pressed in. I think this is the typical 104.7 that Sandaholic is talking about. Many have done this with good results. . .
Another way to go is to get a NEW Cylinder Casting - this is cast for a bigger bore.
Stroke should also be considered. It increases torque AND displacement BUT the BORE stays the same or can be increased, depending on your desired results.
Yes there is a 730 and yes, there is an 800.
Team Pami was the first to build these engines up with bigger bores / stroke. The engine in the DS 650 originated from the BMW F650 Bike so, when the quad was introduced, we all knew the engine was a solid platform. . . I don't think any of us really knew how strong it really was / is. There are some people on here putting some serious power to this engine and it flat holds together (most of the time [img]i/expressions/face-icon-small-wink.gif[/img] ).
Over the years, others have come along. . . Sam Coe (come and gone), TVI - Still around and putting out great power, HP Research - Putting great packages together, Team Pami (The Bom Racing) innovaters of the big bore Rotax and Ron Wood - leaders of the stock bore/stroke packages.
These builders sometimes work with others such as Falicon Crankshafts (for strokers) or MRE for undercutting the engagement dogs in the tranny.
That should be enough for now.
The stock (STOCK) Jug can be bored from a 100mm to a 102mm and re-coated with Nikasyl (sp). I've herd of people possibly going all the way to a 103.5??? on the stock jug (Cylinder) and then re-coating it.
Some have sleeved the stock jug. . . this means it is bored to where there isn't a cylinder any more, just water jackets, etc. Then a steel cylinder (sleeve) is pressed in. I think this is the typical 104.7 that Sandaholic is talking about. Many have done this with good results. . .
Another way to go is to get a NEW Cylinder Casting - this is cast for a bigger bore.
Stroke should also be considered. It increases torque AND displacement BUT the BORE stays the same or can be increased, depending on your desired results.
Yes there is a 730 and yes, there is an 800.
Team Pami was the first to build these engines up with bigger bores / stroke. The engine in the DS 650 originated from the BMW F650 Bike so, when the quad was introduced, we all knew the engine was a solid platform. . . I don't think any of us really knew how strong it really was / is. There are some people on here putting some serious power to this engine and it flat holds together (most of the time [img]i/expressions/face-icon-small-wink.gif[/img] ).
Over the years, others have come along. . . Sam Coe (come and gone), TVI - Still around and putting out great power, HP Research - Putting great packages together, Team Pami (The Bom Racing) innovaters of the big bore Rotax and Ron Wood - leaders of the stock bore/stroke packages.
These builders sometimes work with others such as Falicon Crankshafts (for strokers) or MRE for undercutting the engagement dogs in the tranny.
That should be enough for now.
Dec 3, 2006 | 09:59 PM
#7
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biggest ds bore
Sorry for the misleading title, i guess i should say -----What is the biggest CC you can get on a ds650 by increasing both the bore and the stroke?-----
And how would a ds650 bored to the max do against a ds650 bored to the max and stroked to the max. The latter would have the CC advantage but the first one has a shorter stroke so it can rev out much quicker
It would be cool to see a ds1000 cuz there's a guy on this forum with a raptor1000, i wanna see that thing drag.
And how much does a ds1300 hayabusa weigh approximately? I think it would be pretty heavy with a 4 cylinder engine in a DS, would not be cut out for track AT ALL, but HELLO DUNES!
edit: isnt the stock bore 98mm?
And how would a ds650 bored to the max do against a ds650 bored to the max and stroked to the max. The latter would have the CC advantage but the first one has a shorter stroke so it can rev out much quicker
It would be cool to see a ds1000 cuz there's a guy on this forum with a raptor1000, i wanna see that thing drag.
And how much does a ds1300 hayabusa weigh approximately? I think it would be pretty heavy with a 4 cylinder engine in a DS, would not be cut out for track AT ALL, but HELLO DUNES!
edit: isnt the stock bore 98mm?
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Dec 4, 2006 | 07:43 AM
#9
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biggest ds bore
The biggest bore and stroke combinations to date on a single cylinder ds engine is 855cc's. Correct me if Im wrong but Im thinking its a 108.5 bore with a 10mm stroke.
Also, that 1000cc raptor is not a single cylinder.
Also, that 1000cc raptor is not a single cylinder.