HeadC1 bought his wife a 07 brute wit a motor that had a spun rod bearing (got a great deal because of this). Here are some pictures of the motor goin back together. I wouldnt call this a "how to", more like a how NOT to put a crank in a motor, although it seems to have worked
a lil brute PORN for yall
Using the new parts washer to clean the cases
using a hammer as a press, notice our nice block of wood to suport the crank in the middle
what do u do when a hammer doesnt work, get a bigger hammer (also works for removing ur old worn out crank)
the new crank is in
the rods wit new bearings are now in
Head putting some RTV on all the edges
the liquid encouragement to get the job done right (im a Bud Light fan myself, but free beer is always good )
the manual that trys to keep us from f'n the whole thing up
put the bolts back in after putting the cases back together
that was as far as we made it last night. stay tuned for more action from Team BS HQ
No this one is for my wife and if her bike was any faster than mine she would talk too much sh**. So she's staying stock and I get the performance mods.:rockn:
One tip for those going to try to install the crank themselfs.... A butane torch is your best friend when doing this. Heat the crank case up where the bearing goes real good and the bearing will drop right in. Once the bearing is in heat the inner race of the bearing some and the crank slides right in.
Awesome, I may have to tear my little brute down before to long, its got a slight knock to it (I think its the rod bearings by the way it does it and sound it makes). Runs great so I guess i'll see with time!!!
another tip on installing a crank is that you put the crank in the freezer for a few hours and heat the inner race like stated above and the crank will just fall into place on the bearing. I did a crank on a 2 stroke that way and it work just perfect. any one ever hear of that little trick?
Well we cranked it up Saturday night. I didn't have the exhaust hooked up or the breather box on so I only ran it for a second, just wanted to make sure it worked before I put everything back together.
I've heard of the heating and cooling before and think I'm going to try it next time on the crank bearing in the left side case. Its the one they say you can't change, that you have to buy a new case to replace it. I'll also try it on the main bearing on the right side as you stated.
yeah the rebuild was kinda fun. too bad i didnt get to help do anything after puttin the cases together. i was busy wit gettin my bike back in one piece (which it still aint but its alot closer).
but the new crank was around $300 if im not mistaken
I just bought a 650 sra with spun rod bearing and want to build it myself but my buddy that is gonna pay for the rebuild wants to send it to flynt. Im gonna pick it up this weekend and really get to look at the frame and diffs to see how much it will take to get back in ridable shape. I bought it for 1000 and it is suppose to have newly rebuilt front diff and has a 2.5xt warn winch. Anybody need any parts pm me and ill keep a list if i decide to part out.
Nope I don't believe it does. How hard was it to rebuild the motor and get everything running good. The quotes to rebuild mild to wild is anywhere from 2500 to 4800.
i think flynt will do a stock rebuild for 1800 if the cases and cylinder is good. that wat he had said before. but u can do it urself. just get a manual and go at it. i didnt help wit the top end, but puttin the bottom end together was not bad at all. and if u get to tear the entire motor down and rebuild its easier cause u can possibly remember where most of the stuff goes. it sucks to get a motor to rebuild when most of it is tore down already
Well I tried to crank it again last week and the key way was broke. I order a 6* timing advance key that came in yesterday. I'm putting it in tonight, hopefully all goes well.
The new shoes should be in Thursday or Friday for it. I was going to order 312's but when she saw the pic of them she decided she wanted something flashier (you know bling bling) so I ended up ordering chrome SS112's with 30" backs wrapped around them.
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Mud in My Blood Forum
305.8K posts
24.5K members
Since 2008
A forum community dedicated to Off Road Powersport owners and enthusiasts. Come join the discussion about performance, reviews, classifieds, troubleshooting, maintenance, and more! Open to anything that slings mud Including Yamaha, Honda, Kawasaki, and Suzuki.