I'm getting started in my 2000 cr250r frame build.I'm curious on different ways to do it I'm looking for the strongest possible way without buying a kit because the hardest thing to me is moving the y pipe up...
could I get away with just making the opening bigger or do I have to move it up.
also should I replace the entire bottom rail with the mounts or just replace the top mounts?
also the heads they can I use a factory head stay or fabricate something different?
and the coil can I use a CR 250 oil do I have to use the 500?
right now I'm more concerned about vibrations cracking the frame where should my focus point be?
gen 2 500 build questions on frame strength
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scottkusch
- Posts: 6
- Joined: January 13th, 2013, 6:28 am
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iggys-amsoil
- Posts: 3602
- Joined: June 1st, 2007, 6:09 pm
- Location: Just North of March Airfield CA
From what I have seen doing the frame rail and everything looks more Factory.
I have seen the Y opened up to fit but you will have to add gussets like a butterfly wings on the outside of the Y.
In my case the rails were completely redone, however I did case a big double jump really hard and cracked well broke the top part of the Y completely around, a 1/4 gap. Thank god for head stays. Now I have a doubler or a 1/8 plate welded front and back at that spot.
This was a few years ago, several races since but I haven't cased anything that hard since. Other than flat landing from about 12 feet fractruing my right arm, and wrist still and never will be same. Good thing am left handed I suppose.
I have seen the Y opened up to fit but you will have to add gussets like a butterfly wings on the outside of the Y.
In my case the rails were completely redone, however I did case a big double jump really hard and cracked well broke the top part of the Y completely around, a 1/4 gap. Thank god for head stays. Now I have a doubler or a 1/8 plate welded front and back at that spot.
This was a few years ago, several races since but I haven't cased anything that hard since. Other than flat landing from about 12 feet fractruing my right arm, and wrist still and never will be same. Good thing am left handed I suppose.
Trinity Racing mild porting FMF
62 pilot, EGH needle, 172 main
03 Gen III CR250 frame
2013 Dodger Charger 5.7 Hemi
http://www.prisonplanet.com
Your Amsoil Customer # 350882
62 pilot, EGH needle, 172 main
03 Gen III CR250 frame
2013 Dodger Charger 5.7 Hemi
http://www.prisonplanet.com
Your Amsoil Customer # 350882
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scottkusch
- Posts: 6
- Joined: January 13th, 2013, 6:28 am
http://m.youtube.com/results?q=cr500%20 ... sion&sm=1o it broke up top by the radiator mount?
I think it's easier to do it the way this guy did it.....
But I'm concerned on how weak it will be ne a r the bottom mount even if I weld a smaller piece inside the frame then on the outside...
I think it's easier to do it the way this guy did it.....
But I'm concerned on how weak it will be ne a r the bottom mount even if I weld a smaller piece inside the frame then on the outside...