fcr repair with jb weld?

[dg400sm]

i picked up a slant body fcr from ebay for $25. i've totally stripped it down and noticed that the carb body is worn where the slide wheels move up and down,much more worn at the bottom of the slides movement. i know this is a common problem. just wondered if anybody has come up with any solutions and will an epoxy resin fill the wear grooves. jb weld is said to be fuel resistant

[dg400sm]

think i just found the answer

 

http://www.youtube.com/watch?v=TZ5sD9hQTyw

[DrD]

alumaloy is Not all its cracked up to be! Only attempt an alumaloy repair on horizontal repairs. It will run off anything not horizontal. Also depends if the metal your working can take the heat required for alumaloy to melt, I've had the work piece turn to jelly before the rod melts. My vote would be save your money. I gave all my alumaloy away to my neighbor and now have a tig welder.

[dg400sm]

i'm at college at the moment so i have access to a tig welder,i am also a very accomplished welder as that is my job i'm just not sure i will be able to get into the small area where the slide goes. i'll try the alumaloy on some scrap aluminium first then bash it with a hammer and see how it holds up. my other option is to get a long nozzle for the tig and see if i can get in there. just seems such a waste to throw away an fcr because of a little bit of wear. i'll post some pictures of my attempts as they happen

[dg400sm]

here is the worn body of the slant body FCR. you can see the grooves at the outer edges

[BillDirt1]

Trying to repair that would be like putting a band-aid on a stab wound.  Looks like some severe K&N air filter niglect. 

Buy a new (or better one) or  .

[Erik Marquez]

Paperweight  

[dg400sm]

i already have another fcr or my drz. i just purchased this one on ebay because it was so cheap. 35 dollars including postage is not bad. if it becomes a paperweight that is fine but aluminium is infinitely repairable so something should be able to be done. as a specialist welder i will set myself a personal challenge to fix it.

[dg400sm]

just an update on repairing the FCR. i took it to college today to have a go at repairing it. the carb body is not cast aluminium it is die cast so that rules out any sort of welding due to the high zinc content. i had a go at braze welding it and it started blistering before i even got a chance to melt the filler rod,again due to the high zinc content. so all in all i am still stuck with a paperweight

[Craigo]

Sell it to someone you don't like...

[38super]

Any metal filled epoxy will work for a while, an alternative is glue shim stock (.002") over the wear tracks.  Surfaces will have to be grit blasted or abraded for the epoxy to stick.

 

This is what some machinists use to rebuild the ways on worn machinery - http://www.moglice.com/

[everlast]

http://bbs.homeshopmachinist.net/threads/53946-secret-moglice-recipe

[38super]

everlast, thank you very much for that link.

[everlast]

Dunno if it works or helps but I remembered reading it a while back and bookmarked it.

I know there's a guy around here that reshapes the head for better flow using JBweld so it is ok for exposure to fuel.

[dg400sm]

next thing i will try is i will take a hacksaw and cut a larger channel where the grooves already are,then fill it up with jb weld and  make it smooth,once that is done i will soak it in fuel for a couple of weeks and see how it holds up. lot of work i know but just have the urge to find a solution 

[Craigo]

next thing i will try is i will take a hacksaw and cut a larger channel where the grooves already are,then fill it up with jb weld and  make it smooth,once that is done i will soak it in fuel for a couple of weeks and see how it holds up. lot of work i know but just have the urge to find a solution 

 

Yes well you have nothing to lose....except your time....