| Author | Message | ||
     Xblake |
I dumped by bike a few weeks ago and cracked the primary cover. Ive tried brazing the inside and outside and oil still seeps through. Anyone know of a sealant or other means of sealing this case up? Im a full time student a part time worker so cash is low at the moment but i want to get my bike back on the road. Any advice would be appreciated. Thanks. | ||
| Cycleaddict |
J B WELD .... 4 minute set time , works wonders !!! (jb weld is an epoxi glue ) | ||
| Ridrx |
+1 on the JB Weld. | ||
| Diablobrian |
I recently found a putty type epoxy at my local Ace Hardware that is a "marine epoxy" It is oil and fuel resistant and is very easy to work with. It's green, until you mix it, so it is easy to identify hanging on the peg. I recently used it to repair a plastic(!) ATV fuel tank with great results. | ||
| Kootenay |
You can use JB Weld, but if you want the real stuff (which really works) look up your local Belzona dealer--not cheap like JB, but it's what companies like Caterpillar recommend for repairs like this (and if you approach your local guy correctly he may slide you a bit on the cheap...what you want is Belzona 1111 Super Metal). http://www.belzona.com | ||
| Ragnagwar |
If you're going to use the JBWeld, use the standard mix and not the quickset. Since you're sealing an oil leak I think you'll be better off in the long run.YMMV! | ||
| Spiderman |
Go to a welding shop and spend the money, it will save you in the long run. Depending on the shop, try a small one, should only be 10 to 30 bucks depending on the size of said crack. | ||
| Kootenay |
Go to a welding shop and spend the money, it will save you in the long run. Hmmm...I recommended Belzona above, I work with the stuff all the time (make my living with it, actually) and I've seen a few castings which were completely screwed up by welding...often when I'm asked if I can salvage 'em... If a welder really knows what he's doing, maybe he can weld thin castings without damaging anything--but applying that much localized heat to a case is likely to cause several kinds of stress damage, from hairline cracks to warping. Personally, I wouldn't even try to weld engine cases--I have, though, done several motorcycle case repairs with Belzona (including a cam cover and a side case with a 1" x 3" hole in it). Here's a pic of the repair I did to my old Yamaha...the PO had driven the brake pedal into the case in a fall, denting it in and cracking it. The repair was done with the case on the bike, and I filled in the dent as well as seal the crack. It's not really as obvious as it appears in this pic (must be the light) although it is visible.  | ||
| Tigerbythetail |
hi............I completely agree with what Kootenay has said...................remove all the stuff you have already applied.......sand away the paint on the outside, about 1-2 inches rim is enough and sand the same area round it on the inside. Stick the primary cover in the dish washer and give 2-3 wash hot cycles with a good measure of dish washing maschine liquid to degrease it........than use the stuff Kootenay has suggested..............or try and get the stuff from this German Company http://diamant.ph The stuff you need is called Plasticmetal To make the job perfect I would also use a 2nd Product from them, which is called. Dichtol This will seal any minor crack or leak and it will seal the pores within the cast material. Investment is around 20 Euro .........one of my mates works for a very big German Car manufacturer and the Diamant Products suggested are used by them. I have also use this stuff myself and it works! tiger | ||
| Gentleman_jon |
Koot - Do you know where one might buy Belzona in small retail quantities? | ||
| Mesafirebolt |
I cracked my cover and put a small hole in the very bottom of it from a rather large unforgiving rock. I took it off, stripped it down because I wanted it gloss black anyway, de-greased the heck out of it, sanded it down inside and out and used stuff called Devcon, its an aerospace body filler but is impervious to solvents like trans fluid on the inside and outside of the crack. All sanded down, painted and been running leak free for 9 months. Any good quality Solvent Proof filler will work on a small area like a crack or hole. | ||
| Swampy |
Devcon I used to use that stuff to reshape intake ports on racing engines I built many years ago in a far away land..... It was also used to fill cooling jackets in cylinder blocks to keep the cylinder skirts stabilized in some big bore applications.... | ||
| Fullpower |
Anyone with a TIG welder can fix that in 10 minutes. A repair like that is worth about a six pack in my shop. | ||
| Spiderman |
Thank you FP! And if it is hairline they won't even need filler rod. And aluminuim is pretty forgiving to heat compared with steel. |
