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Hybrid build up
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Posted by: 250x_kyle

Alright i have a fairly stock 400ex roller. and i have a yz400 punched out .40 over, mild port and polish, and kibble white valve and valve springs on the way. Plans are to GTAW (tig) up an oil tank and airbox. im going to make some gussets while im at it and weld them into the frame. suspension will be put on in june or july

http://i46.photobucket.com/albums/f134/needanewquad/PICT0194.jpg
http://i46.photobucket.com/albums/f134/needanewquad/PICT0195-1.jpg
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Posted by: g9901920

looks good i have the same yz400 build but using lsr400ex stuff i can post pics of the mounts if needed.

Posted by: 250x_kyle

that would be awsome. i need to take some of my junk parts in for scrap money lol.

Posted by: 250x_kyle

got my motor carb wireing etc today. anyone have any advice. the fab work starts tomarrow.

Posted by: g9901920

you have to weld two tubes.
one tube to the top of the frame where the top of the engine mounts.
and one tube where the bottom mounts and then yoyu make little mounts to put on the tubes.

you also have to make front mounts and then modifiy the swing arm bolt and make spacers.

make sure everything is lined up good luck!

Posted by: 250x_kyle

yeah i knew about the tubes for mounts and that but what do i have to do to the swingarm bolt

Posted by: Groves187

You gotta get a sleave that goes into the rear case mount to take out the slop in the pivot bolt. I'm not sure if the "pivot tubes" are different in the swinger for the spaceing or not. The person to PM would be ss440ex. he could tell you.

Posted by: ss440ex

The yz engine is .240 shorter than the 400ex.

The swing arm pivot bolt hole (rear of the yz eng) is .090 larger then the 400ex swing arm bolt.

If I recall, the rear of the yz engine is 2.900 wide.

Have fun!

Posted by: 250x_kyle

well the motor i bought was already in a hybrid. so the colar for the engine to take the play outta the engine came with it. as far as motor mounts i got the chain aligned today. only got about an hour to work on it. does anyone have pics of your intake set up. how u notched the frame? got my radiator and what not in the mail today. should have my fab work done by friday. if so friday night is tare down. by the way does anyone have the nuckel for the kick start laying around. because the set up got is missing the nuckle that the kick lever pivots on.

Posted by: 250x_kyle

thanks ss440ex all help is appriciated.

Posted by: 250x_kyle

NOTE: this is being done at school as a school project.

ill get some pics tomarrow. sub frame was moddified for a 250r grab bar. may do a flip top not sure yet. bottome motor mounts and top motor mounts hacked off and welds ground. chain aligned the front left motor horn is made. top motor mounts done. as soon as the front motor horns are finished my buddys taken them to his shop for powder.

plans for tomarrow
- finish motor mounts
- notch frame for intake
- radiator mounted
my buddys in a differnt shop with a realy good tubing bender and hes going to make me a custom mid pipe.

plans for next week. oil tank fabbed up radiator surrounds, and posibly an airbox.

Posted by: g9901920

take pics.

Posted by: 250x_kyle

i had to work on another project for my instructor today. so i made no progress as well as forgot my camera. monday i should have the better part of it done.we shall see .

Posted by: 250x_kyle

http://i46.photobucket.com/albums/f134/needanewquad/PICT0004.jpg

Posted by: g9901920

looks like your doing a nice job.
good luck keep us updated!

Posted by: 250x_kyle

http://i46.photobucket.com/albums/f134/needanewquad/PICT0007-1.jpg

Posted by: 250x_kyle

http://i46.photobucket.com/albums/f134/needanewquad/PICT0010.jpg
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