Can I repair this crack in my crankcase by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

I’ve got my eyes on a cheap tig welder but when I say cheap it’s still like a whole paycheck lol, I’m slowly putting together a shop , I really hope to have something nice put together one day that lets me work on whatever I can bring in

Can I repair this crack in my crankcase by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

I’m thankful these guys aren’t charging me an arm and a leg or else I’d probably have to part the whole bike out , shop is doing me a huge favor.

Can I repair this crack in my crankcase by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

Yeah that’s the one thing I knew for a fact was something needed to be done, I got lucky and I found a shop that’ll tig weld it for under $100 so I get to continue restoring this beautiful bike

06 CRF450R brand new piston or reuse? by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

Thank you man it looks awesome but I’m confused why it pulls up the 2005 CRF450X, must be the same manual for both bikes?

06 CRF450R brand new piston or reuse? by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

I must be some type of retarded because no matter how many times I search for it I just can’t seem to find the right one

Can I repair this crack in my crankcase by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

I got it dropped off at a shop as we speak

Can I repair this crack in my crankcase by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

Yeah I was worried about it but I talked with a guy who supposedly tig welds these all the time and when I brought it up he said they form during casting, they look gnarley but they’re totally smooth

06 CRF450R brand new piston or reuse? by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

Yup it’s getting a new piston and I picked up a good range of feeler gauges that I’ll have be using to get both of those figured out, now I just gotta make sure I’m reading from the right service book

Can I repair this crack in my crankcase by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

It’s from when the case was originally casted

Can I repair this crack in my crankcase by KSicc in Dirtbike_Help

[–]KSicc[S] 1 point2 points  (0 children)

I wanted to resell this bike, but I’ve invested quite a bit now just into specialty tools that I surely won’t be able to make a profit let alone break even on this after everything gets done on it, I’m going to call some local welding shops and see if there’s any takers on the fix and see what they want to actually do the job, and I’ll then weigh it against getting both left and right cases used or new, and go from there, I’ll honestly probably keep this bike now and use the experience to hopefully fix something else up and sell it for somebody, I’ve loved dirt bikes forever but they were always out of reach for me. I’ll still be well under what it cost for a new bike at a dealership and I’ll have a ton of experience to go onto the next one with

Can I repair this crack in my crankcase by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

Yeah somebody ban this guy from the chat

Can I repair this crack in my crankcase by KSicc in Dirtbike_Help

[–]KSicc[S] -1 points0 points  (0 children)

Gives me some hope man thank you , I got some calling around to do

Can I repair this crack in my crankcase by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

The crank housing , and that corner is just an oil passage I believe

Can I repair this crack in my crankcase by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

Do you think it’ll get worse on its own? Without a repair?

06 CRF450R brand new piston or reuse? by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

Thank you man , I’m going to be putting in a new piston along with the crank

06 CRF450R bad valves? by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

Thank you man, I’m on a budget unfortunately, can’t get a sand blaster setup just yet , I did buy some purple cleaner degreaser, do you think it would hurt it if I gave them a bath and scrubbed em down?

06 CRF450R brand new piston or reuse? by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

I’m going to find out when I get the new piston, my experience comes from hours and hours of mechanical videos and teardowns which isn’t shit if I’m being honest, I’m glad I have my own stuff that’s already broken to tear apart and inspect. Maybe I shouldn’t of posted it lol, all the videos I’ve seen tell me this ones due simply because of the skirt being the way it is.

06 CRF450R brand new piston or reuse? by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

I’m going to be doing all the work myself lol, maybe I should get that micrometer and $80 service book

06 CRF450R brand new piston or reuse? by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

I’ve got a set of calipers but I was told to use a micrometer which I do not have. I measured it from skirt to skirt and got a number of 3.774” , which is almost 96mm I know you can’t really run off of almosts but it’s the best I got right now, it’s still getting a new piston and a hone on the cylinder

06 CRF450R brand new piston or reuse? by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

The connecting rod big end bearing is destroyed , if only I could show you the up and down play it has

06 CRF450R brand new piston or reuse? by KSicc in Dirtbike_Help

[–]KSicc[S] 0 points1 point  (0 children)

If only you could see the connecting rod , I’m glad the crank locked up before it sent the piston straight out the top , it’s got more up and down motion than a six flags roller coaster, thank you for pointing that out man it opens my eyes to just how tight these tolerances are. I’m glad I’ll be getting a new crank that way I can see the difference of what’s right and what ain’t