my 05" crf250r gen 4 AF build

tacoma69 · Post by **tacoma69** » March 25th, 2010, 6:10 pm

before pic of my 05" crf250r

my motor donor 87" cr500

off to a good start.

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RideRed · Post by **RideRed** » March 25th, 2010, 6:50 pm

Lookin' good man

eyesky2002 · Post by **eyesky2002** » March 25th, 2010, 7:06 pm

That's NICE

Post by **AlisoBob** » March 25th, 2010, 8:24 pm

Compared to the radiator mounting tabs, the "Y" looks low.

Have you mocked it up yet??

tacoma69 · Post by **tacoma69** » March 25th, 2010, 8:42 pm

i havent mocked it up yet. still waiting for my rear motor bushings to be made. just looking at yours bob, i thought that it would be high enuf. with my rads on, there is only very little room till it hits.

RideRed · Post by **RideRed** » March 25th, 2010, 8:57 pm

Heres mine:

Highly scientific measurement...

tacoma69 · Post by **tacoma69** » March 25th, 2010, 9:13 pm

thanx for those pics ridered. just by looking at yours, i should be good.

Post by **AlisoBob** » March 25th, 2010, 11:40 pm

Yours might be a little too high. You need a little "wiggle room" for when you lay it down.....

tacoma69 · Post by **tacoma69** » April 2nd, 2010, 6:25 pm

i finally got the rear bushings made

just a quick mock up[/img]

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still waiting for my pipe.....sent my spare head and cylinder to glen at gss porting to get done.

Post by **AlisoBob** » April 2nd, 2010, 6:26 pm

Hit up soliD brO for one of his bitchin Radiator nipple kits.

dubious01 · Post by **dubious01** » April 3rd, 2010, 10:18 am

dang, wasn' that old cr500 in kijiji just a few days ago!

Blasphemy... that old CR500 is in mint shape, it should be saved not ripped apart! LOL

lookin good though.

CR500R7 · Post by **CR500R7** » April 3rd, 2010, 2:18 pm

tacoma69 wrote:

Tell me, Whats the story with the oil filler cap.

tacoma69 · Post by **tacoma69** » April 3rd, 2010, 2:46 pm

dubious01 wrote:
Blasphemy... that old CR500 is in mint shape, it should be saved not ripped apart! LOL

believe me... it looked better then it was!! just look at the trany fill plug, that will give you an idea of how it was taken care of.

tacoma69 · Post by **tacoma69** » April 11th, 2010, 12:14 pm

got my pipe the other day and made my bottom motor mounts. the frame is at the welders now. will get pics up when i get it back. just a quick question about the air box boot. on the gen 4, some people are using the cr500. some the 00" and the 02" cr250 boot. because im using the older motor with the intake being longer(8mm) is this going to mess things up for me?

mxdogger · Post by **mxdogger** » April 13th, 2010, 9:49 pm

Tocoma that all depends were your motor is clocked in the frame, i would wait till you have the motor in the frame along with the airbox and then measure the distance from the front of the box to the intake manifold.

on my gen 4 i used the 98 cr 250 boot with a 1/16" spacer,
length of boot is 7 1/4 " on the long side. a 2001 cr 250 boot is 6 7/8ths and the 500 boot is even shorter !

tacoma69 · Post by **tacoma69** » April 14th, 2010, 8:58 pm

thanx mxdogger. i was hoping to know before i got there so i could be ahead of the game! (and order the parts). thanx for the input, i will wait.

mxdogger · Post by **mxdogger** » April 14th, 2010, 9:22 pm

I tried looking ahead on some parts for my build and still ended up with parts that didn't fit, i have a few airboots now

also i didn't pick up on the fact that a 97-99 cr250 cdi box won't fit behind the front # plate (box is to wide to fit inbetween the forks when their turned) and putting it any where else is a pain.
i think the stock cr500 box has just enough wiring to reach behind there(stretched) and the 2000 cr 250 cdi wiring fits in there like stock with the wiring fitting loosely.

tacoma69 · Post by **tacoma69** » April 24th, 2010, 2:29 pm

ok, we have some progress!

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tacoma69 · Post by **tacoma69** » April 28th, 2010, 12:26 pm

last night i was staring at my frame thinking how i wanted to build my head stay. at the same time i was also thinking about the couple of bikes that have broke in half because of faulty welding of the "Y". i have to tell you that this has been bothering me for awhile, thinking that my bike could break in half! so hears my idea.....why not just turn the head around and make a bracket come off the head and the bolt it to me main down tube above the "Y"? this way if the welds ever broke,your motor would still hold everything together. the bracket would have to be offset, but i think its doable. i have a milling machine, and am thinking of trying this. i just wanted to put it out there and get some feedback from my fellow hoons.

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2strokes4ever · Post by **2strokes4ever** » April 28th, 2010, 12:52 pm

thats thinking outside the box

gregrobo · Post by **gregrobo** » April 29th, 2010, 6:44 am

if your frame is welded correctly there wouldnt be a problem.

hoofarted · Post by **hoofarted** » April 29th, 2010, 10:18 am

Different for sure. IDK if it'll work. You may have tank issues. I'd just fab up the usual stays and mount in the traditional fashion. Oh and the Y's that broke were solid, not hollow - your Y should be fine! Just my

...

dannygraves · Post by **dannygraves** » April 29th, 2010, 10:18 am

those 2 bikes are two our of hundreds, don't worry about your Y breaking.

Post by **AlisoBob** » April 29th, 2010, 10:24 am

Yea, but now your dealing with kooky coolant hoses, sparkplug zapping your balls.... all kinds of nonscense.

If your really afraid of your frame breaking, run a kevlar strap bewteen the steering stem, and engine mounts.

tacoma69 · Post by **tacoma69** » May 1st, 2010, 11:18 am

thanx for ur input guys. i really liked bobs comment about the spark plug zapping my balls!! LOL..... i have decieded to put my trust in my welders skills and build my head stay the normal way. i still like the idea. but it wouldnt be as clean of an install. if the mount on the head were to point straight forward, it would be a diffrent story.

BannedCR500Riders.com

my 05" crf250r gen 4 AF build

my 05" crf250r gen 4 AF build