NOS_350X
03-27-2010, 03:11 AM
Well with some parts laying around i decided to put some things together.
This 01 cr250 cylinder is ported by ESR with a steel sleve and powervalve blockoffs. Several things i had to modify, First off the water inlet comes up under the exhaust through the bottomend on the cr. So i had those inlets welded up, and had a inlet spout welded on. These cylinders (with cr bottomend) are known to put out 65ish hp in micro sprints, and shifter karts.
BEFORE
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0451.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0450.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0447.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0448.jpg
AFTER
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0084.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0080.jpg
The welding isnt perfect. I didnt do it because, well i dont have the equipment to do so.
Other modifications needed was opening up the cases to accept the large sleve and on the exhaust side i had to weld up the stud holes and move (drill and tap) each out by about 1/3". That was the very hard part.
On the pipe... The Cr pipe slips into the cylinder, Where the atc pipe slips over the flange. SOOO i bought an Cr250 pro citcut pipe cut off the part that slips in, Then cut off the the part that bolts on to the atc cylinder and now i had an adaptor to run any ATC pipe on this Cr cylinder.
Since the Gasket layout is different on the cylinder and the cases, I had to use a spacerplate anyways i used that to make the flow into each other smooth. i also had to cut up gaskets to make things lineup right. Anyways its all together now. Been test riding for several days now. SUPER FUN!!!
http://i59.photobucket.com/albums/g285/NOS_350x/IMG_7344.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/IMG_7345.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/IMG_7425.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/IMG_7412.jpg
Any questions?
This 01 cr250 cylinder is ported by ESR with a steel sleve and powervalve blockoffs. Several things i had to modify, First off the water inlet comes up under the exhaust through the bottomend on the cr. So i had those inlets welded up, and had a inlet spout welded on. These cylinders (with cr bottomend) are known to put out 65ish hp in micro sprints, and shifter karts.
BEFORE
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0451.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0450.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0447.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0448.jpg
AFTER
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0084.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/GEDC0080.jpg
The welding isnt perfect. I didnt do it because, well i dont have the equipment to do so.
Other modifications needed was opening up the cases to accept the large sleve and on the exhaust side i had to weld up the stud holes and move (drill and tap) each out by about 1/3". That was the very hard part.
On the pipe... The Cr pipe slips into the cylinder, Where the atc pipe slips over the flange. SOOO i bought an Cr250 pro citcut pipe cut off the part that slips in, Then cut off the the part that bolts on to the atc cylinder and now i had an adaptor to run any ATC pipe on this Cr cylinder.
Since the Gasket layout is different on the cylinder and the cases, I had to use a spacerplate anyways i used that to make the flow into each other smooth. i also had to cut up gaskets to make things lineup right. Anyways its all together now. Been test riding for several days now. SUPER FUN!!!
http://i59.photobucket.com/albums/g285/NOS_350x/IMG_7344.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/IMG_7345.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/IMG_7425.jpg
http://i59.photobucket.com/albums/g285/NOS_350x/IMG_7412.jpg
Any questions?