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Post by millsc on Oct 29, 2013 13:46:14 GMT -5
Christmas is coming and may ask Santa aka wife for a 6mm stroker and a 63mm bbk I want to max my scoot I figure with 198cc and an even taller gear set up I can make my scoot comfortable highway capable. Will add an oil cooler also. Will be cheaper to add these mods than to buy a motorcycle.
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Post by PCBGY6 on Oct 29, 2013 14:34:19 GMT -5
Sounds like a beast in the making.
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Post by millsc on Oct 29, 2013 14:58:15 GMT -5
Figured it would be fairly simple to bore with the crank out and case split easy clean up too
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Post by wilds on Oct 30, 2013 2:18:36 GMT -5
Figured it would be fairly simple to bore with the crank out and case split easy clean up too If you plan on a 180cc cylinder I believe the outer diameter of the sleeve is 65,1mm. That will not leave much material to the cylinder bolts and the wall between the cylinder and cam chain. Here's a picture on how much material there will be left after it's bored out.  You also need to remove some material on the right engine case for the crank. On this picture you also see how deep you have to bore into the case...  After you have bored out the case, there is a risk that the oil passage in the block isn't properly aligned with the oil passage in the cylinder. Also check so the holes in the gasket aligns.   |
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Sophomore Rider
Currently Offline
Posts: 217
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Joined: Mar 3, 2013 8:42:52 GMT -5
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Post by buford1488 on Oct 30, 2013 5:49:58 GMT -5
if you are going full out you better get a nice porting in that head............  |
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Post by wilds on Oct 30, 2013 8:04:00 GMT -5
and get an fuel injection.
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Post by millsc on Oct 30, 2013 8:27:29 GMT -5
Thanks for the pics I believe I'll change to a 62mm still will give me 192cc
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Post by urbanmadness on Oct 30, 2013 21:49:18 GMT -5
just curious, how do you get the cases bored... do you take them to a machine shop? Or is time to play everyone's favorite game.... Garage machinist?
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Post by skuttadawg on Oct 30, 2013 22:56:52 GMT -5
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Post by millsc on Oct 30, 2013 23:07:44 GMT -5
Planned to bore it myself having second thoughts now though
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Post by skuttadawg on Oct 30, 2013 23:44:08 GMT -5
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Post by millsc on Oct 31, 2013 11:42:50 GMT -5
Just gonna do the taida 61mm forged kit and see how it does
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Post by wilds on Oct 31, 2013 12:59:17 GMT -5
Just gonna do the taida 61mm forged kit and see how it does I think you will need to bore the case anyway  The 61mm Taida kit has an outer diameter of 62,7mm. All of the cases with 54mm stud spacing I've tried is just a fraction over 61mm... Before you buy anything I would suggest that you messure your engine case. Just so you know if you need to bore the engine case or not and what parts to buy... |
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Post by millsc on Oct 31, 2013 13:25:14 GMT -5
My case is 62.5mm will be a very small amount to remove if any
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Post by wilds on Nov 1, 2013 0:56:56 GMT -5
My case is 62.5mm will be a very small amount to remove if any Great, then there want be any major problems fitting the cylinder. Just remember to grind down a little material for the stroker crank. |
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Main Jet
cc or 103cc stroker . Here is a 180cc that can be a 205 with stroker