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jeffatc250r
01-08-2007, 05:37 PM
Here is a pic

cr480r
01-08-2007, 05:44 PM
have you tried it without the reed spacer? Are you set on using that mikuni? Keihins are much more compact.

jeffatc250r
01-08-2007, 05:56 PM
Its hard to see in the pic but the carb actually will hit the top motor mount the way it is even with the spacer. I do have a keihin 39mm that came with this motor but it is currently on my other "r". Problem still remains the boot is angled up a little and will cause havoc with any carb i think. I also have a stock 34mm keihin that i tried and had the same problem

cr480r
01-08-2007, 06:13 PM
Why is the spacer ontop of the reed cage? Is that just for mock-up purposes?

traxxasx
01-08-2007, 06:21 PM
Make an insert out of billet, for the intake then extend it to your desire with the same diameter as the outlet of teh carb. Then clamp it all down. Use a rubber fittig with clamp.

jeffatc250r
01-08-2007, 06:43 PM
i thought about that, but would that cause havoc with the distance of the carb to the reeds? And yes ithe spacer is just mocked up temp. I just had a brainstorm though, ill try making an angled reed spacer that is 1.5 inches thick at the top and 1/4 inch at the bottom that will level things out maybee. Off to the bridgeport!!!

cr480r
01-08-2007, 07:07 PM
Maybe there is a different intake you can use. I think there are multiple atc's with 500's in them on here. I am sure that some of these owners will log in later on.

Billy Golightly
01-08-2007, 07:11 PM
Your gonna have to fabricate a custom aluminum angled intake with a rubber boot for the carb to slip into it looks like. Although now looking at it I'm not sure thats the answer. Maybe you could make a new one and angle more towards you(from the picture) where its kind of almost a side mount. Not sure what that would do for flow though. Either that or use a carb that isn't as tall.

200x Basket
01-08-2007, 07:44 PM
how did you mount that engine? it looks like that is the problem. my carb fits great!! and the mikuni should be your last choice for a 500.

3leggeddog
01-08-2007, 07:47 PM
lets see some pics of how you got the motor mounted.does your pipe fit?are you running the swingarm bolt throught the rear of the engine?i will get pics of my 500 for you,i don't have any clearence issues.i am sure your motor is mounted different,but you may want to rethink the way it's setting.surely you can make it fit without modding the intake.all my stuff is stock cr 500,in an 86250r frame.fits like o.j. simpsons glove,and i can maintence everything in the bike.i can check the plug,remove the carb,whatever.let me get some pics.,and please post some more of your pics

3leggeddog
01-08-2007, 07:49 PM
oand if you need a pipe,let me know.i got a modded dg cr500/250r pipe layin here.

KASEY
01-08-2007, 08:40 PM
here is mine,,, pitch that carb its to big,,, i even have the stock intake boot on mine,,,, with lotsa room to spare,,, i am also running a rad valve ,,,
http://i12.tinypic.com/3y7f4hh.jpg
http://www.3wheelerworldforums.com/attachment.php?attachmentid=38830&d=1168292204

KASEY
01-08-2007, 08:50 PM
there is a comparison,, you got a wild motor angle going on there ,, lets see some wider angle shots,,, something ain't right in there .... whats that copper line for ? need input,,,

Jason Hall
01-08-2007, 08:59 PM
Kasey, I can tell by the look of your front sprocket that you did some work to the bottom of your frame. The chain hits the slider perfectly. Looks sweet.

200x Basket
01-08-2007, 09:31 PM
here is mine also. you can see the rear of the engine looks lower.

200x Basket
01-08-2007, 09:37 PM
and one more before paint

jeffatc250r
01-09-2007, 12:52 AM
Well here are some pics, i am using the rear mount through the swing arm bolt, had to do some modifying , added 8 inches to the swingarm also. Im sure everyone did theirs different from everyone else

jeffatc250r
01-09-2007, 01:20 AM
Hmmm, i see you guys didnt use the rear mount, what frame mods did you do to get the rear mount of the motor to line up with the swingarm bolt? For one reason or another i felt at the time using the 250r rear mount was the way to go,....im not about to rip this apart and start over though, im going to make a piece that goes in between the carb boot and the reeds that is tapered kinda like a triangle that will level the carb out and see where that gets me. I plan on running just a k@n pod anyways so im not concerned with lining up the intake boot. The copper line is actually a coolant line that i think i will change to something more professional looking. Also heres a pic of my trail bike. It has an 05 450r swingarm, axle and shock which made i good improvement, paul turner jug and a few other goodies.

cr480r
01-09-2007, 04:05 AM
So how do you plan on routing the chain? are you moving the swingarm pivot as well?

200x Basket
01-09-2007, 09:53 AM
i hate to tell you that yours will not work but i do not think it will. the chain will eat the swinger in no time.

to make this work you have to get the rear sprocket centerd with the swingarm bolt. to do that you use the swingarm bolt through the rear mount and lower the front. to lower the front you have to notch the rear brace and cut out/replate the lower the tubes or notch them.

in the end you will have to redo all your mounts to make this work out. looks like nice work so far!!

3leggeddog
01-09-2007, 09:54 PM
i agree with 200x basket.don't get upset,but you will be far better off to start over.your not too far along anyway.

heres how we did mine.jason hall is a god btw,he cut the lower frame cradle in front of the rear cross brace,and below the front motor mounts.he the hung the cr motor from the stock 250r head stay,and lined the rear engine boss,up with the swinger bolt.then 1 custom spacer will be needed for the swinger to tighten up.next he bent 2 new frame cradle tubes,and welded them under her.he made a solid steel skid plate to stiffen the frame back up.made the front motor mounts,and sent her home.everything on my bike is like factory.i can change the plug,a kicker fit with relative ease,all my stock 250r rad. hoses work,,the carn will even line right up with a stock airbox.all i did was lenghten the shifter,built a kick starter,and did all the plumbing.heres some pics to compare.i can fill you in a bit more if you want,just don't want to drag this post out.when your ready for a kicker,use a cr250 lower knuckle,and a yz 400-426 kicker.it will fit perfect,and clear the frame.you got a good start,but i think you need to back tract.200x basket has built 2 of these,trust him!heres some pics
http://i24.photobucket.com/albums/c12/3leggeddog/500r032.jpg
http://i24.photobucket.com/albums/c12/3leggeddog/500r031.jpg
http://i24.photobucket.com/albums/c12/3leggeddog/500r030.jpg
http://i24.photobucket.com/albums/c12/3leggeddog/500r024.jpg
http://i24.photobucket.com/albums/c12/3leggeddog/500r013.jpg
http://i24.photobucket.com/albums/c12/3leggeddog/500r012.jpg
http://i24.photobucket.com/albums/c12/3leggeddog/500r011.jpg
http://i24.photobucket.com/albums/c12/3leggeddog/500r009.jpg

jeffatc250r
01-09-2007, 10:41 PM
Wish i had known all this before, i guess i better take it apart and start over. What kind of pipe is that you have? Also could you post a close up pic of the bottom of the frame, did you use the bottom mount??

200x Basket
01-09-2007, 11:22 PM
here is my build post. you will have to join to see the pics
http://www.3wheeler.org/vb/showthread.php?t=22810&highlight=500r

3leggeddog
01-10-2007, 07:08 AM
the good chrome pipe is still in question,don't know who made it.i can get some better pics later.if you search the forums,you can find the build thread.or folow 200x baskets.sorry for the bad news,you'll be much happier if you start over.

3leggeddog
01-10-2007, 07:12 AM
hey jeff,i bumped that thread up for ya.should stay on the first page for awhile.hope all this helps man,good luck

jeffatc250r
01-10-2007, 06:04 PM
Thanks guys, The more i look at it the more i hate what i have , so i guess ill take it back apart and try the cutting out of the bottom frame as 3leggeddog did. Ill keep you guys posted on my progress.

3leggeddog
01-10-2007, 08:01 PM
did you see that other thread i bumped for ya?keep us updated.looks like you do nice work,now that you are headed in the right direction,it should be a walk in the park

jeffatc250r
01-10-2007, 09:55 PM
Yes i checked out the whole thread, i also looked at 200xbaskets articles. Now that the guesswork is gone it shouldnt take long to revise it. Another thing i meant to ask is this, do you have any problems with the frame cracking anywhere? It seems everyone i talk to says my frame will crack, i personally dont see why it would, the cr frames hold up just fine and they look basically the same. So is it all a myth as i am suspecting or has anyone actually had problems??

cr480r
01-10-2007, 10:07 PM
Some 500's vibrate worse than others. I bet alot of people say that because of the quads have problems with cracking. I would expect vibration similar to what the bike originally had. My '90 CR500 vibrated less than my buddies '95 and '01. I know of one guy with a '96 that is worst I have seen. The vibration on all them is tolerable. My old '83 CR480 besides the noisey coooling fins, is very smooth surprisingly. Maybe it is the trueness of the cranks? motor mounts? idk...

200x Basket
01-10-2007, 10:25 PM
the 1st one i built cracked by the peg on the 2nd owner. he just welded in a gusset. that is why i welded the large skid plate on the bottom. The Dog also has a skid plate welded one. the plate acts as a huge gusset to strengthen the frame.

3leggeddog
01-10-2007, 11:19 PM
no problems yet,and i jump mine pretty good.